unix: handle out of memory in iface name copy (#4724)

Allocate storage upfront, that way we can never run out of memory
halfway through processing the interface list.

Fixes: https://github.com/libuv/libuv/issues/4723

.github/workflows/CI-unix.yml

@@ -29,59 +29,67 @@ jobs:
 
   build-android:
     runs-on: ubuntu-latest
-    container: reactnativecommunity/react-native-android:2020-5-20
-    # Work around an issue where the node from actions/checkout is too new
-    # to run inside the long-in-the-tooth react-nactive-android container
-    # image.
     env:
-      ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
       ANDROID_AVD_HOME: /root/.android/avd
-    steps:
-      - uses: actions/checkout@v3
-      - name: Envinfo
-        run: npx envinfo
-      - name: Configure android arm64
-        # see build options you can use in https://developer.android.com/ndk/guides/cmake
-        run: |
-          mkdir build
-          cd build
-          $ANDROID_HOME/cmake/3.10.2.4988404/bin/cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_HOME/ndk/20.0.5594570/build/cmake/android.toolchain.cmake -DCMAKE_BUILD_TYPE=Release -DANDROID_ABI="arm64-v8a" -DANDROID_PLATFORM=android-24 ..
-      - name: Build android arm64
-        run: |
-          $ANDROID_HOME/cmake/3.10.2.4988404/bin/cmake --build build
-          ls -lh build
-      - name: Install Android ABI arm64-v8a
-        run: |
-          # TODO: This can be in a pre-built docker image
-          sdkmanager "build-tools;24.0.3" "platforms;android-24" "system-images;android-24;google_apis;arm64-v8a"
-
-      - name: Start emulator
-        run: |
-          echo no | avdmanager create avd -n test -k "system-images;android-24;google_apis;arm64-v8a"
-
-          adb start-server
-
-          emulator @test -memory 2048 -no-audio -no-window -gpu off -no-snapshot -no-boot-anim -netdelay none -netspeed full -no-snapshot-save -no-snapshot-load -writable-system  &
-
-          adb wait-for-device
-
-          adb shell "su 0 setenforce 0" # to allow some syscalls like link, chmod, etc.
-
-          # Push the build and test fixtures to the device
-          adb push build /data/local/tmp
-          adb shell mkdir /data/local/tmp/build/test
-          adb push test/fixtures /data/local/tmp/build/test
-
-      - name: Test
-        run: |
-          adb shell "cd /data/local/tmp/build ; env UV_TEST_TIMEOUT_MULTIPLIER=5 ./uv_run_tests_a"
-
-  build-macos:
-    runs-on: macos-12
     steps:
       - uses: actions/checkout@v4
       - name: Envinfo
         run: npx envinfo
+      - name: Enable KVM
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+      - name: Build and Test
+        uses: reactivecircus/android-emulator-runner@v2
+        with:
+          api-level: 30
+          arch: x86_64
+          target: google_apis
+          ram-size: 2048M
+          emulator-options: -no-audio -no-window -gpu off -no-boot-anim -netdelay none -netspeed full -writable-system -no-snapshot-save -no-snapshot-load -no-snapshot
+          disable-animations: true
+          script: |
+            echo "::group::Configure"
+            cmake -B build -S . -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DCMAKE_BUILD_TYPE=Release -DANDROID_ABI="x86_64" -DANDROID_PLATFORM=android-30
+            echo "::endgroup::"
+
+            echo "::group::Build"
+            cmake --build build
+
+            ## Correct some ld bugs that cause problems with libuv tests
+            wget "https://github.com/termux/termux-elf-cleaner/releases/download/v2.2.1/termux-elf-cleaner" -P build
+            chmod a+x build/termux-elf-cleaner
+            build/termux-elf-cleaner --api-level 30 ./build/uv_run_tests
+            build/termux-elf-cleaner --api-level 30 ./build/uv_run_tests_a
+
+            adb shell "su 0 setenforce 0" # to allow some syscalls like link, chmod, etc.
+
+            ## Push the build and test fixtures to the device
+            adb push build /data/local/tmp
+            adb shell mkdir /data/local/tmp/build/test
+            adb push test/fixtures /data/local/tmp/build/test
+            echo "::endgroup::"
+
+            ## Run the tests
+            file build/uv_run_tests_a
+            adb shell "cd /data/local/tmp/build && env UV_TEST_TIMEOUT_MULTIPLIER=5 ./uv_run_tests_a"
+
+  build-macos:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-13, macos-14]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Envinfo
+        run: npx envinfo
+      - name: Disable Firewall
+        run: |
+          /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
+          sudo defaults write /Library/Preferences/com.apple.alf globalstate -int 0
+          /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate
       - name: Setup
         run: |
           brew install ninja automake libtool
@@ -112,7 +120,11 @@ jobs:
           make -C build-auto -j4
 
   build-ios:
-    runs-on: macos-12
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-13, macos-14]
     steps:
       - uses: actions/checkout@v4
       - name: Configure
@@ -126,45 +138,36 @@ jobs:
           ls -lh build-ios
 
   build-cross-qemu:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     name: build-cross-qemu-${{ matrix.config.target }}
 
     strategy:
       fail-fast: false
       matrix:
         config:
-          - {target: arm,     toolchain: gcc-arm-linux-gnueabi,     cc: arm-linux-gnueabi-gcc,      qemu: qemu-arm-static     }
+          - {target: arm,                 toolchain: gcc-arm-linux-gnueabi,       cc: arm-linux-gnueabi-gcc,      qemu: qemu-arm      }
-          - {target: armhf,   toolchain: gcc-arm-linux-gnueabihf,   cc: arm-linux-gnueabihf-gcc,    qemu: qemu-arm-static     }
+          - {target: armhf,               toolchain: gcc-arm-linux-gnueabihf,     cc: arm-linux-gnueabihf-gcc,    qemu: qemu-arm      }
-          - {target: aarch64, toolchain: gcc-aarch64-linux-gnu,     cc: aarch64-linux-gnu-gcc,      qemu: qemu-aarch64-static }
+          - {target: aarch64,             toolchain: gcc-aarch64-linux-gnu,       cc: aarch64-linux-gnu-gcc,      qemu: qemu-aarch64  }
-          - {target: riscv64, toolchain: gcc-riscv64-linux-gnu,     cc: riscv64-linux-gnu-gcc,      qemu: qemu-riscv64-static }
+          - {target: riscv64,             toolchain: gcc-riscv64-linux-gnu,       cc: riscv64-linux-gnu-gcc,      qemu: qemu-riscv64  }
-          - {target: ppc,     toolchain: gcc-powerpc-linux-gnu,     cc: powerpc-linux-gnu-gcc,      qemu: qemu-ppc-static     }
+          - {target: ppc,                 toolchain: gcc-powerpc-linux-gnu,       cc: powerpc-linux-gnu-gcc,      qemu: qemu-ppc      }
-          - {target: ppc64,   toolchain: gcc-powerpc64-linux-gnu,   cc: powerpc64-linux-gnu-gcc,    qemu: qemu-ppc64-static   }
+          - {target: ppc64,               toolchain: gcc-powerpc64-linux-gnu,     cc: powerpc64-linux-gnu-gcc,    qemu: qemu-ppc64    }
-          - {target: ppc64le, toolchain: gcc-powerpc64le-linux-gnu, cc: powerpc64le-linux-gnu-gcc,  qemu: qemu-ppc64le-static }
+          - {target: ppc64le,             toolchain: gcc-powerpc64le-linux-gnu,   cc: powerpc64le-linux-gnu-gcc,  qemu: qemu-ppc64le  }
-          - {target: s390x,   toolchain: gcc-s390x-linux-gnu,       cc: s390x-linux-gnu-gcc,        qemu: qemu-s390x-static   }
+          - {target: s390x,               toolchain: gcc-s390x-linux-gnu,         cc: s390x-linux-gnu-gcc,        qemu: qemu-s390x    }
-          - {target: mips,    toolchain: gcc-mips-linux-gnu,          cc: mips-linux-gnu-gcc,         qemu: qemu-mips-static     }
+          - {target: mips,                toolchain: gcc-mips-linux-gnu,          cc: mips-linux-gnu-gcc,         qemu: qemu-mips     }
-          - {target: mips64,  toolchain: gcc-mips64-linux-gnuabi64,   cc: mips64-linux-gnuabi64-gcc,  qemu: qemu-mips64-static   }
+          - {target: mips64,              toolchain: gcc-mips64-linux-gnuabi64,   cc: mips64-linux-gnuabi64-gcc,  qemu: qemu-mips64   }
-          - {target: mipsel,  toolchain: gcc-mipsel-linux-gnu,        cc: mipsel-linux-gnu-gcc,       qemu: qemu-mipsel-static   }
+          - {target: mipsel,              toolchain: gcc-mipsel-linux-gnu,        cc: mipsel-linux-gnu-gcc,       qemu: qemu-mipsel   }
-          - {target: mips64el,toolchain: gcc-mips64el-linux-gnuabi64, cc: mips64el-linux-gnuabi64-gcc,qemu: qemu-mips64el-static }
+          - {target: mips64el,            toolchain: gcc-mips64el-linux-gnuabi64, cc: mips64el-linux-gnuabi64-gcc,qemu: qemu-mips64el }
-          - {target: arm (u64 slots),     toolchain: gcc-arm-linux-gnueabi,     cc: arm-linux-gnueabi-gcc,      qemu: qemu-arm-static}
+          - {target: arm (u64 slots),     toolchain: gcc-arm-linux-gnueabi,       cc: arm-linux-gnueabi-gcc,      qemu: qemu-arm      }
-          - {target: aarch64 (u64 slots), toolchain: gcc-aarch64-linux-gnu,     cc: aarch64-linux-gnu-gcc,      qemu: qemu-aarch64-static}
+          - {target: aarch64 (u64 slots), toolchain: gcc-aarch64-linux-gnu,       cc: aarch64-linux-gnu-gcc,      qemu: qemu-aarch64  }
-          - {target: ppc (u64 slots),     toolchain: gcc-powerpc-linux-gnu,     cc: powerpc-linux-gnu-gcc,      qemu: qemu-ppc-static}
+          - {target: ppc (u64 slots),     toolchain: gcc-powerpc-linux-gnu,       cc: powerpc-linux-gnu-gcc,      qemu: qemu-ppc      }
-          - {target: ppc64 (u64 slots),   toolchain: gcc-powerpc64-linux-gnu,   cc: powerpc64-linux-gnu-gcc,    qemu: qemu-ppc64-static}
+          - {target: ppc64 (u64 slots),   toolchain: gcc-powerpc64-linux-gnu,     cc: powerpc64-linux-gnu-gcc,    qemu: qemu-ppc64    }
 
     steps:
       - uses: actions/checkout@v4
-      - name: Install QEMU
+      - name: Install qemu and ${{ matrix.config.toolchain }}
-        # this ensure install latest qemu on ubuntu, apt get version is old
-        env:
-          QEMU_SRC: "http://archive.ubuntu.com/ubuntu/pool/universe/q/qemu"
-          QEMU_VER: "qemu-user-static_7\\.2+dfsg-.*_amd64.deb$"
-        run: |
-          DEB=`curl -s $QEMU_SRC/ | grep -o -E 'href="([^"#]+)"' | cut -d'"' -f2 | grep $QEMU_VER | tail -1`
-          wget $QEMU_SRC/$DEB
-          sudo dpkg -i $DEB
-      - name: Install ${{ matrix.config.toolchain }}
         run: |
           sudo apt update
-          sudo apt install ${{ matrix.config.toolchain }} -y
+          sudo apt install qemu-user qemu-user-binfmt ${{ matrix.config.toolchain }} -y
       - name: Configure with ${{ matrix.config.cc }}
         run: |
           mkdir build

.github/workflows/sanitizer.yml

@@ -67,7 +67,7 @@ jobs:
           ./build-ubsan/uv_run_tests_a
 
   sanitizers-macos:
-    runs-on: macos-12
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
 

.mailmap

@@ -52,6 +52,7 @@ San-Tai Hsu <vanilla@fatpipi.com>
 Santiago Gimeno <santiago.gimeno@quantion.es> <santiago.gimeno@gmail.com>
 Saúl Ibarra Corretgé <s@saghul.net>
 Saúl Ibarra Corretgé <s@saghul.net> <saghul@gmail.com>
+Saúl Ibarra Corretgé <saghul@gmail.com> <s@saghul.net>
 Shigeki Ohtsu <ohtsu@iij.ad.jp> <ohtsu@ohtsu.org>
 Shuowang (Wayne) Zhang <shuowang.zhang@ibm.com>
 TK-one <tk5641@naver.com>

.readthedocs.yaml

@@ -2,7 +2,7 @@ version: 2
 
 sphinx:
   builder: html
-  configuration: null
+  configuration: docs/src/conf.py
   fail_on_warning: false
 
 build:

AUTHORS

@@ -588,5 +588,7 @@ Raihaan Shouhell <raihaanhimself@gmail.com>
 Rialbat <miha-wead@mail.ru>
 Adam <adam@NetBSD.org>
 Poul T Lomholt <ptlomholt@users.noreply.github.com>
-dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
 Thad House <ThadHouse@users.noreply.github.com>
+Julian A Avar C <28635807+julian-a-avar-c@users.noreply.github.com>
+amcgoogan <105525867+amcgoogan@users.noreply.github.com>
+Rafael Gonzaga <rafael.nunu@hotmail.com>

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.9)
+cmake_minimum_required(VERSION 3.10)
 
 if(POLICY CMP0091)
   cmake_policy(SET CMP0091 NEW) # Enable MSVC_RUNTIME_LIBRARY setting
@@ -186,7 +186,7 @@ set(uv_sources
     src/version.c)
 
 if(WIN32)
-  list(APPEND uv_defines WIN32_LEAN_AND_MEAN _WIN32_WINNT=0x0602 _CRT_DECLARE_NONSTDC_NAMES=0)
+  list(APPEND uv_defines WIN32_LEAN_AND_MEAN _WIN32_WINNT=0x0A00 _CRT_DECLARE_NONSTDC_NAMES=0)
   list(APPEND uv_libraries
        psapi
        user32
@@ -667,6 +667,7 @@ if(LIBUV_BUILD_TESTS)
        test/test-thread-affinity.c
        test/test-thread-equal.c
        test/test-thread.c
+       test/test-thread-name.c
        test/test-thread-priority.c
        test/test-threadpool-cancel.c
        test/test-threadpool.c

ChangeLog

@@ -1,4 +1,85 @@
-2024.10.18, Version 1.49.2 (Stable)
+2025.01.15, Version 1.50.0 (Stable), 8fb9cb919489a48880680a56efecff6a7dfb4504
+
+Changes since version 1.49.2:
+
+* ci: run macOS and iOS tests also on macOS 14 (Saúl Ibarra Corretgé)
+
+* unix,win: map ENOEXEC errno (Saúl Ibarra Corretgé)
+
+* test: skip multicast join test on ENOEXEC (Saúl Ibarra Corretgé)
+
+* ci: make sure the macOS firewall is disabled (Saúl Ibarra Corretgé)
+
+* darwin,test: squelch EBUSY error on multicast join (Saúl Ibarra Corretgé)
+
+* build: update minimum cmake to 3.10 (Ben Noordhuis)
+
+* kqueue: use EVFILT_USER for async if available (Jameson Nash)
+
+* unix,win: fix off-by-one in uv_wtf8_to_utf16() (Ben Noordhuis)
+
+* doc: add scala-native-loop to LINKS.md (Julian A Avar C)
+
+* unix: fix build breakage on haiku, openbsd, etc (Jeffrey H. Johnson)
+
+* kqueue: lower overhead in uv__io_check_fd (Andy Pan)
+
+* doc: move cjihrig back to active maintainers (cjihrig)
+
+* build(deps): bump actions/checkout from 3 to 4 (dependabot[bot])
+
+* unix,pipe: fix handling null buffer in uv_pipe_get{sock,peer}name (Saúl
+  Ibarra Corretgé)
+
+* unix,win: harmonize buffer checking (Saúl Ibarra Corretgé)
+
+* unix,win: add support for detached threads (Juan José Arboleda)
+
+* src: add uv_thread_set/getname() methods (Santiago Gimeno)
+
+* build: fix qemu builds (Ben Noordhuis)
+
+* win: drop support for windows 8 (Ben Noordhuis)
+
+* linux: fix uv_cpu_info() arm cpu model detection (Ben Noordhuis)
+
+* linux: always use io_uring for epoll batching (Ben Noordhuis)
+
+* doc: clarify repeating timer behavior more (Ben Noordhuis)
+
+* unix,win: handle nbufs=0 in uv_udp_try_send (Ben Noordhuis)
+
+* win: use GetQueuedCompletionStatusEx directly (Saúl Ibarra Corretgé)
+
+* win: enable uv_thread_{get,set}name on MinGW (Saúl Ibarra Corretgé)
+
+* win: drop support for the legacy MinGW (Saúl Ibarra Corretgé)
+
+* win,fs: get (most) fstat when no permission (Jameson Nash)
+
+* win: plug uv_fs_event_start memory leak (amcgoogan)
+
+* test: address FreeBSD kernel bug causing NULL path in fsevents (Juan José
+  Arboleda)
+
+* unix: refactor udp sendmsg code (Ben Noordhuis)
+
+* unix,win: add uv_udp_try_send2 (Ben Noordhuis)
+
+* test: fix flaky flaky udp_mmsg test (Juan José Arboleda)
+
+* build: enable fdsan in Android (Juan José Arboleda)
+
+* test: fix udp-multicast-join for FreeBSD (Juan José Arboleda)
+
+* win: fix leak processing fs event (Saúl Ibarra Corretgé)
+
+* src: set a default thread name for workers (Rafael Gonzaga)
+
+* misc: implement uv_getrusage_thread (Juan José Arboleda)
+
+
+2024.10.18, Version 1.49.2 (Stable), e1095c7a4373ce00cd8874d8e820de5afb25776e
 
 Changes since version 1.49.1:
 

LINKS.md

@@ -37,6 +37,7 @@
 * [Pixie-io](https://github.com/pixie-io/pixie): Open-source observability tool for Kubernetes applications.
 * [potion](https://github.com/perl11/potion)/[p2](https://github.com/perl11/p2): runtime
 * [racer](https://libraries.io/rubygems/racer): Ruby web server written as an C extension
+* [scala-native-loop](https://github.com/scala-native/scala-native-loop): Extensible event loop and async-oriented IO for Scala Native; powered by libuv
 * [Socket Runtime](https://sockets.sh): A runtime for creating native cross-platform software on mobile and desktop using HTML, CSS, and JavaScript
 * [spider-gazelle](https://github.com/cotag/spider-gazelle): Ruby web server using libuv bindings
 * [Suave](http://suave.io/): A simple web development F# library providing a lightweight web server and a set of combinators to manipulate route flow and task composition
@@ -107,3 +108,5 @@
    * [node.pas](https://github.com/vovach777/node.pas) NodeJS-like ecosystem
 * Haskell
    * [Z.Haskell](https://z.haskell.world)
+* C3
+   * [libuv.c3l](https://github.com/velikoss/libuv.c3l)   

MAINTAINERS.md

@@ -4,6 +4,9 @@ libuv is currently managed by the following individuals:
 
 * **Ben Noordhuis** ([@bnoordhuis](https://github.com/bnoordhuis))
   - GPG key: D77B 1E34 243F BAF0 5F8E  9CC3 4F55 C8C8 46AB 89B9 (pubkey-bnoordhuis)
+* **Colin Ihrig** ([@cjihrig](https://github.com/cjihrig))
+  - GPG key: 94AE 3667 5C46 4D64 BAFA  68DD 7434 390B DBE9 B9C5 (pubkey-cjihrig)
+  - GPG key: 5735 3E0D BDAA A7E8 39B6  6A1A FF47 D5E4 AD8B 4FDC (pubkey-cjihrig-kb)
 * **Jameson Nash** ([@vtjnash](https://github.com/vtjnash))
   - GPG key: AEAD 0A4B 6867 6775 1A0E  4AEF 34A2 5FB1 2824 6514 (pubkey-vtjnash)
   - GPG key: CFBB 9CA9 A5BE AFD7 0E2B  3C5A 79A6 7C55 A367 9C8B (pubkey2022-vtjnash)
@@ -24,9 +27,6 @@ libuv is currently managed by the following individuals:
 * **Anna Henningsen** ([@addaleax](https://github.com/addaleax))
 * **Bartosz Sosnowski** ([@bzoz](https://github.com/bzoz))
 * **Bert Belder** ([@piscisaureus](https://github.com/piscisaureus))
-* **Colin Ihrig** ([@cjihrig](https://github.com/cjihrig))
-  - GPG key: 94AE 3667 5C46 4D64 BAFA  68DD 7434 390B DBE9 B9C5 (pubkey-cjihrig)
-  - GPG key: 5735 3E0D BDAA A7E8 39B6  6A1A FF47 D5E4 AD8B 4FDC (pubkey-cjihrig-kb)
 * **Fedor Indutny** ([@indutny](https://github.com/indutny))
   - GPG key: AF2E EA41 EC34 47BF DD86  FED9 D706 3CCE 19B7 E890 (pubkey-indutny)
 * **Imran Iqbal** ([@imran-iq](https://github.com/imran-iq))

Makefile.am

@@ -59,7 +59,7 @@ if WINNT
 uvinclude_HEADERS += include/uv/win.h include/uv/tree.h
 AM_CPPFLAGS += -I$(top_srcdir)/src/win \
                -DWIN32_LEAN_AND_MEAN \
-               -D_WIN32_WINNT=0x0602
+               -D_WIN32_WINNT=0x0A00
 libuv_la_SOURCES += src/win/async.c \
                     src/win/atomicops-inl.h \
                     src/win/core.c \
@@ -294,6 +294,7 @@ test_run_tests_SOURCES = test/blackhole-server.c \
                          test/test-thread-equal.c \
                          test/test-thread.c \
                          test/test-thread-affinity.c \
+                         test/test-thread-name.c \
                          test/test-thread-priority.c \
                          test/test-threadpool-cancel.c \
                          test/test-threadpool.c \

SUPPORTED_PLATFORMS.md

@@ -4,14 +4,14 @@
 |---|---|---|---|
 | GNU/Linux | Tier 1 | Linux >= 3.10 with glibc >= 2.17 | |
 | macOS | Tier 1 | macOS >= 11 | Currently supported macOS releases |
-| Windows | Tier 1 | >= Windows 8 | VS 2015 and later are supported |
+| Windows | Tier 1 | >= Windows 10 | VS 2015 and later are supported |
 | FreeBSD | Tier 2 | >= 12 | |
 | AIX | Tier 2 | >= 6 | Maintainers: @libuv/aix |
 | IBM i | Tier 2 | >= IBM i 7.2 | Maintainers: @libuv/ibmi |
 | z/OS | Tier 2 | >= V2R2 | Maintainers: @libuv/zos |
 | Linux with musl | Tier 2 | musl >= 1.0 | |
 | Android | Tier 3 | NDK >= r15b | Android 7.0, `-DANDROID_PLATFORM=android-24` |
-| MinGW | Tier 3 | MinGW32 and MinGW-w64 | |
+| MinGW | Tier 3 | MinGW-w64 | |
 | SunOS | Tier 3 | Solaris 121 and later | |
 | Other | Tier 3 | N/A | |
 

configure.ac

@@ -13,7 +13,7 @@
 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 AC_PREREQ(2.57)
-AC_INIT([libuv], [1.49.2], [https://github.com/libuv/libuv/issues])
+AC_INIT([libuv], [1.50.1-dev], [https://github.com/libuv/libuv/issues])
 AC_CONFIG_MACRO_DIR([m4])
 m4_include([m4/libuv-extra-automake-flags.m4])
 m4_include([m4/as_case.m4])

docs/src/fs.rst

@@ -430,6 +430,12 @@ API
 
     Equivalent to :man:`utime(2)`, :man:`futimes(3)` and :man:`lutimes(3)` respectively.
 
+    Passing `UV_FS_UTIME_NOW` as the atime or mtime sets the timestamp to the
+    current time.
+
+    Passing `UV_FS_UTIME_OMIT` as the atime or mtime leaves the timestamp
+    untouched.
+
     .. note::
       z/OS: `uv_fs_lutime()` is not implemented for z/OS. It can still be called but will return
       ``UV_ENOSYS``.

docs/src/fs_event.rst

@@ -47,6 +47,11 @@ Data types
 
     The `events` parameter is an ORed mask of :c:enum:`uv_fs_event` elements.
 
+.. note::
+   For FreeBSD path could sometimes be `NULL` due to a kernel bug.
+
+    .. _Reference: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=197695
+
 .. c:enum:: uv_fs_event
 
     Event types that :c:type:`uv_fs_event_t` handles monitor.

docs/src/index.rst

@@ -58,5 +58,5 @@ libuv can be downloaded from `here <https://dist.libuv.org/dist/>`_.
 Installation
 ------------
 
-Installation instructions can be found in `the README <https://github.com/libuv/libuv/blob/master/README.md>`_.
+Installation instructions can be found in the `README <https://github.com/libuv/libuv/blob/master/README.md>`_.
 

docs/src/misc.rst

@@ -360,6 +360,17 @@ API
         On Windows not all fields are set, the unsupported fields are filled with zeroes.
         See :c:type:`uv_rusage_t` for more details.
 
+.. c:function:: int uv_getrusage_thread(uv_rusage_t* rusage)
+
+    Gets the resource usage measures for the calling thread.
+
+    .. versionadded:: 1.50.0
+
+    .. note::
+        Not supported on all platforms. May return `UV_ENOTSUP`.
+        On macOS and Windows not all fields are set, the unsupported fields are filled with zeroes.
+        See :c:type:`uv_rusage_t` for more details.
+
 .. c:function:: uv_pid_t uv_os_getpid(void)
 
     Returns the current process ID.

docs/src/threading.rst

@@ -78,6 +78,14 @@ Threads
 
     .. versionchanged:: 1.4.1 returns a UV_E* error code on failure
 
+.. c:function:: int uv_thread_detach(uv_thread_t* tid)
+
+    Detaches a thread. Detached threads automatically release their
+    resources upon termination, eliminating the need for the application to
+    call `uv_thread_join`.
+
+    .. versionadded:: 1.50.0
+
 .. c:function:: int uv_thread_create_ex(uv_thread_t* tid, const uv_thread_options_t* params, uv_thread_cb entry, void* arg)
 
     Like :c:func:`uv_thread_create`, but additionally specifies options for creating a new thread.
@@ -132,7 +140,29 @@ Threads
 .. c:function:: int uv_thread_join(uv_thread_t *tid)
 .. c:function:: int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2)
 
+.. c:function:: int uv_thread_setname(const char* name)
+
+    Sets the name of the current thread. Different platforms define different limits on the max number of characters
+    a thread name can be: Linux, IBM i (16), macOS (64), Windows (32767), and NetBSD (32), etc. `uv_thread_setname()`
+    will truncate it in case `name` is larger than the limit of the platform.
+
+    Not supported on Windows Server 2016, returns `UV_ENOSYS`.
+
+    .. versionadded:: 1.50.0
+
+.. c:function:: int uv_thread_getname(uv_thread_t* tid, char* name, size_t* size)
+
+    Gets the name of the thread specified by `tid`. The thread name is copied, with the trailing NUL, into the buffer
+    pointed to by `name`. The `size` parameter specifies the size of the buffer pointed to by `name`.
+    The buffer should be large enough to hold the name of the thread plus the trailing NUL, or it will be truncated to fit
+    with the trailing NUL.
+
+    Not supported on Windows Server 2016, returns `UV_ENOSYS`.
+
+    .. versionadded:: 1.50.0
+
 .. c:function:: int uv_thread_setpriority(uv_thread_t tid, int priority)
+
     If the function succeeds, the return value is 0.
     If the function fails, the return value is less than zero.
     Sets the scheduling priority of the thread specified by tid. It requires elevated
@@ -140,7 +170,9 @@ Threads
     The priority can be set to the following constants. UV_THREAD_PRIORITY_HIGHEST, 
     UV_THREAD_PRIORITY_ABOVE_NORMAL, UV_THREAD_PRIORITY_NORMAL, 
     UV_THREAD_PRIORITY_BELOW_NORMAL, UV_THREAD_PRIORITY_LOWEST.
+
 .. c:function:: int uv_thread_getpriority(uv_thread_t tid, int* priority)
+
     If the function succeeds, the return value is 0.
     If the function fails, the return value is less than zero.
     Retrieves the scheduling priority of the thread specified by tid. The value in the

docs/src/threadpool.rst

@@ -17,6 +17,8 @@ is 1024).
 .. versionchanged:: 1.45.0 threads now have an 8 MB stack instead of the
    (sometimes too low) platform default.
 
+.. versionchanged:: 1.50.0 threads now have a default name of libuv-worker.
+
 The threadpool is global and shared across all event loops. When a particular
 function makes use of the threadpool (i.e. when using :c:func:`uv_queue_work`)
 libuv preallocates and initializes the maximum number of threads allowed by

docs/src/timer.rst

@@ -6,6 +6,15 @@
 
 Timer handles are used to schedule callbacks to be called in the future.
 
+Timers are either single-shot or repeating. Repeating timers do not adjust
+for overhead but are rearmed relative to the event loop's idea of "now".
+
+Libuv updates its idea of "now" right before executing timer callbacks, and
+right after waking up from waiting for I/O. See also :c:func:`uv_update_time`.
+
+Example: a repeating timer with a 50 ms interval whose callback takes 17 ms
+to complete, runs again 33 ms later. If other tasks take longer than 33 ms,
+the timer callback runs as soon as possible.
 
 Data types
 ----------
@@ -64,11 +73,6 @@ API
     duration, and will follow normal timer semantics in the case of a
     time-slice overrun.
 
-    For example, if a 50ms repeating timer first runs for 17ms, it will be
-    scheduled to run again 33ms later. If other tasks consume more than the
-    33ms following the first timer callback, then the callback will run as soon
-    as possible.
-
     .. note::
         If the repeat value is set from a timer callback it does not immediately take effect.
         If the timer was non-repeating before, it will have been stopped. If it was repeating,

docs/src/tty.rst

@@ -27,10 +27,15 @@ Data types
       typedef enum {
           /* Initial/normal terminal mode */
           UV_TTY_MODE_NORMAL,
-          /* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled) */
+          /*
+          * Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled).
+          * May become equivalent to UV_TTY_MODE_RAW_VT in future libuv versions.
+          */
           UV_TTY_MODE_RAW,
           /* Binary-safe I/O mode for IPC (Unix-only) */
-          UV_TTY_MODE_IO
+          UV_TTY_MODE_IO,
+          /* Raw input mode. On Windows ENABLE_VIRTUAL_TERMINAL_INPUT is also set. */
+          UV_TTY_MODE_RAW_VT
       } uv_tty_mode_t;
 
 .. c:enum:: uv_tty_vtermstate_t

docs/src/udp.rst

@@ -426,6 +426,20 @@ API
 
     .. versionchanged:: 1.27.0 added support for connected sockets
 
+.. c:function:: int uv_udp_try_send2(uv_udp_t* handle, unsigned int count, uv_buf_t* bufs[/*count*/], unsigned int nbufs[/*count*/], struct sockaddr* addrs[/*count*/], unsigned int flags)
+
+    Like :c:func:`uv_udp_try_send`, but can send multiple datagrams.
+    Lightweight abstraction around :man:`sendmmsg(2)`, with a :man:`sendmsg(2)`
+    fallback loop for platforms that do not support the former. The handle must
+    be fully initialized; call c:func:`uv_udp_bind` first.
+
+    :returns: >= 0: number of datagrams sent. Zero only if `count` was zero.
+        < 0: negative error code. Only if sending the first datagram fails,
+        otherwise returns a positive send count. ``UV_EAGAIN`` when datagrams
+        cannot be sent right now; fall back to :c:func:`uv_udp_send`.
+
+    .. versionadded:: 1.50.0
+
 .. c:function:: int uv_udp_recv_start(uv_udp_t* handle, uv_alloc_cb alloc_cb, uv_udp_recv_cb recv_cb)
 
     Prepare for receiving data. If the socket has not previously been bound

include/uv.h

@@ -58,6 +58,7 @@ extern "C" {
 #include <stddef.h>
 #include <stdio.h>
 #include <stdint.h>
+#include <math.h>
 
 /* Internal type, do not use. */
 struct uv__queue {
@@ -157,6 +158,7 @@ struct uv__queue {
   XX(ESOCKTNOSUPPORT, "socket type not supported")                            \
   XX(ENODATA, "no data available")                                            \
   XX(EUNATCH, "protocol driver not attached")                                 \
+  XX(ENOEXEC, "exec format error")                                            \
 
 #define UV_HANDLE_TYPE_MAP(XX)                                                \
   XX(ASYNC, async)                                                            \
@@ -775,6 +777,12 @@ UV_EXTERN int uv_udp_try_send(uv_udp_t* handle,
                               const uv_buf_t bufs[],
                               unsigned int nbufs,
                               const struct sockaddr* addr);
+UV_EXTERN int uv_udp_try_send2(uv_udp_t* handle,
+                               unsigned int count,
+                               uv_buf_t* bufs[/*count*/],
+                               unsigned int nbufs[/*count*/],
+                               struct sockaddr* addrs[/*count*/],
+                               unsigned int flags);
 UV_EXTERN int uv_udp_recv_start(uv_udp_t* handle,
                                 uv_alloc_cb alloc_cb,
                                 uv_udp_recv_cb recv_cb);
@@ -798,10 +806,15 @@ struct uv_tty_s {
 typedef enum {
   /* Initial/normal terminal mode */
   UV_TTY_MODE_NORMAL,
-  /* Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled) */
+  /*
+   * Raw input mode (On Windows, ENABLE_WINDOW_INPUT is also enabled).
+   * May become equivalent to UV_TTY_MODE_RAW_VT in future libuv versions.
+   */
   UV_TTY_MODE_RAW,
   /* Binary-safe I/O mode for IPC (Unix-only) */
-  UV_TTY_MODE_IO
+  UV_TTY_MODE_IO,
+  /* Raw input mode. On Windows ENABLE_VIRTUAL_TERMINAL_INPUT is also set. */
+  UV_TTY_MODE_RAW_VT
 } uv_tty_mode_t;
 
 typedef enum {
@@ -1288,6 +1301,7 @@ typedef struct {
 } uv_rusage_t;
 
 UV_EXTERN int uv_getrusage(uv_rusage_t* rusage);
+UV_EXTERN int uv_getrusage_thread(uv_rusage_t* rusage);
 
 UV_EXTERN int uv_os_homedir(char* buffer, size_t* size);
 UV_EXTERN int uv_os_tmpdir(char* buffer, size_t* size);
@@ -1577,6 +1591,8 @@ UV_EXTERN int uv_fs_chmod(uv_loop_t* loop,
                           const char* path,
                           int mode,
                           uv_fs_cb cb);
+#define UV_FS_UTIME_NOW  (INFINITY)
+#define UV_FS_UTIME_OMIT (NAN)
 UV_EXTERN int uv_fs_utime(uv_loop_t* loop,
                           uv_fs_t* req,
                           const char* path,
@@ -1869,6 +1885,7 @@ UV_EXTERN int uv_gettimeofday(uv_timeval64_t* tv);
 typedef void (*uv_thread_cb)(void* arg);
 
 UV_EXTERN int uv_thread_create(uv_thread_t* tid, uv_thread_cb entry, void* arg);
+UV_EXTERN int uv_thread_detach(uv_thread_t* tid);
 
 typedef enum {
   UV_THREAD_NO_FLAGS = 0x00,
@@ -1898,6 +1915,9 @@ UV_EXTERN int uv_thread_getcpu(void);
 UV_EXTERN uv_thread_t uv_thread_self(void);
 UV_EXTERN int uv_thread_join(uv_thread_t *tid);
 UV_EXTERN int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2);
+UV_EXTERN int uv_thread_setname(const char* name);
+UV_EXTERN int uv_thread_getname(uv_thread_t* tid, char* name, size_t size);
+
 
 /* The presence of these unions force similar struct layout. */
 #define XX(_, name) uv_ ## name ## _t name;

include/uv/errno.h

@@ -474,4 +474,10 @@
 # define UV__EUNATCH (-4023)
 #endif
 
+#if defined(ENOEXEC) && !defined(_WIN32)
+# define UV__ENOEXEC UV__ERR(ENOEXEC)
+#else
+# define UV__ENOEXEC (-4022)
+#endif
+
 #endif /* UV_ERRNO_H_ */

include/uv/unix.h

@@ -271,7 +271,10 @@ typedef struct {
 
 #define UV_UDP_SEND_PRIVATE_FIELDS                                            \
   struct uv__queue queue;                                                     \
-  struct sockaddr_storage addr;                                               \
+  union {                                                                     \
+    struct sockaddr addr;                                                     \
+    struct sockaddr_storage storage;                                          \
+  } u;                                                                        \
   unsigned int nbufs;                                                         \
   uv_buf_t* bufs;                                                             \
   ssize_t status;                                                             \

include/uv/version.h

@@ -31,10 +31,10 @@
  */
 
 #define UV_VERSION_MAJOR 1
-#define UV_VERSION_MINOR 49
+#define UV_VERSION_MINOR 50
-#define UV_VERSION_PATCH 2
+#define UV_VERSION_PATCH 1
-#define UV_VERSION_IS_RELEASE 1
+#define UV_VERSION_IS_RELEASE 0
-#define UV_VERSION_SUFFIX ""
+#define UV_VERSION_SUFFIX "dev"
 
 #define UV_VERSION_HEX  ((UV_VERSION_MAJOR << 16) | \
                          (UV_VERSION_MINOR <<  8) | \

include/uv/win.h

@@ -20,7 +20,7 @@
  */
 
 #ifndef _WIN32_WINNT
-# define _WIN32_WINNT   0x0600
+# define _WIN32_WINNT   0x0A00
 #endif
 
 #if !defined(_SSIZE_T_) && !defined(_SSIZE_T_DEFINED)
@@ -32,14 +32,6 @@ typedef intptr_t ssize_t;
 
 #include <winsock2.h>
 
-#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
-typedef struct pollfd {
-  SOCKET fd;
-  short  events;
-  short  revents;
-} WSAPOLLFD, *PWSAPOLLFD, *LPWSAPOLLFD;
-#endif
-
 #ifndef LOCALE_INVARIANT
 # define LOCALE_INVARIANT 0x007f
 #endif
@@ -507,8 +499,11 @@ typedef struct {
   union {                                                                     \
     struct {                                                                  \
       /* Used for readable TTY handles */                                     \
-      /* TODO: remove me in v2.x. */                                          \
+      union {                                                                 \
-      HANDLE unused_;                                                         \
+        /* TODO: remove me in v2.x. */                                        \
+        HANDLE unused_;                                                       \
+        int mode;                                                             \
+      } mode;                                                                 \
       uv_buf_t read_line_buffer;                                              \
       HANDLE read_raw_wait;                                                   \
       /* Fields used for translating win keystrokes into vt100 characters */  \

src/fs-poll.c

@@ -139,6 +139,9 @@ int uv_fs_poll_getpath(uv_fs_poll_t* handle, char* buffer, size_t* size) {
   struct poll_ctx* ctx;
   size_t required_len;
 
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
   if (!uv_is_active((uv_handle_t*)handle)) {
     *size = 0;
     return UV_EINVAL;

src/idna.c

@@ -393,7 +393,7 @@ void uv_wtf8_to_utf16(const char* source_ptr,
     code_point = uv__wtf8_decode1(&source_ptr);
     /* uv_wtf8_length_as_utf16 should have been called and checked first. */
     assert(code_point >= 0);
-    if (code_point > 0x10000) {
+    if (code_point > 0xFFFF) {
       assert(code_point < 0x10FFFF);
       *w_target++ = (((code_point - 0x10000) >> 10) + 0xD800);
       *w_target++ = ((code_point - 0x10000) & 0x3FF) + 0xDC00;

src/threadpool.c

@@ -59,6 +59,7 @@ static void worker(void* arg) {
   struct uv__queue* q;
   int is_slow_work;
 
+  uv_thread_setname("libuv-worker");
   uv_sem_post((uv_sem_t*) arg);
   arg = NULL;
 

src/unix/aix.c

@@ -1120,6 +1120,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   struct ifreq *ifr, *p, flg;
   struct in6_ifreq if6;
   struct sockaddr_dl* sa_addr;
+  size_t namelen;
+  char* name;
 
   ifc.ifc_req = NULL;
   sock6fd = -1;
@@ -1156,6 +1158,7 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 #define ADDR_SIZE(p) MAX((p).sa_len, sizeof(p))
 
   /* Count all up and running ipv4/ipv6 addresses */
+  namelen = 0;
   ifr = ifc.ifc_req;
   while ((char*)ifr < (char*)ifc.ifc_req + ifc.ifc_len) {
     p = ifr;
@@ -1175,6 +1178,7 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     if (!(flg.ifr_flags & IFF_UP && flg.ifr_flags & IFF_RUNNING))
       continue;
 
+    namelen += strlen(ent->ifa_name) + 1;
     (*count)++;
   }
 
@@ -1182,8 +1186,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     goto cleanup;
 
   /* Alloc the return interface structs */
-  *addresses = uv__calloc(*count, sizeof(**addresses));
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
-  if (!(*addresses)) {
+  if (*addresses == NULL) {
     r = UV_ENOMEM;
     goto cleanup;
   }
@@ -1210,7 +1214,9 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 
     /* All conditions above must match count loop */
 
-    address->name = uv__strdup(p->ifr_name);
+    namelen = strlen(p->ifr_name) + 1;
+    address->name = memcpy(name, p->ifr_name, namelen);
+    name += namelen;
 
     if (inet6)
       address->address.address6 = *((struct sockaddr_in6*) &p->ifr_addr);
@@ -1282,13 +1288,7 @@ cleanup:
 
 
 void uv_free_interface_addresses(uv_interface_address_t* addresses,
-  int count) {
+                                 int count) {
-  int i;
-
-  for (i = 0; i < count; ++i) {
-    uv__free(addresses[i].name);
-  }
-
   uv__free(addresses);
 }
 

src/unix/async.c

@@ -38,6 +38,34 @@
 #include <sys/eventfd.h>
 #endif
 
+#if UV__KQUEUE_EVFILT_USER
+static uv_once_t kqueue_runtime_detection_guard = UV_ONCE_INIT;
+static int kqueue_evfilt_user_support = 1;
+
+
+static void uv__kqueue_runtime_detection(void) {
+  int kq;
+  struct kevent ev[2];
+  struct timespec timeout = {0, 0};
+
+  /* Perform the runtime detection to ensure that kqueue with
+   * EVFILT_USER actually works. */
+  kq = kqueue();
+  EV_SET(ev, UV__KQUEUE_EVFILT_USER_IDENT, EVFILT_USER,
+         EV_ADD | EV_CLEAR, 0, 0, 0);
+  EV_SET(ev + 1, UV__KQUEUE_EVFILT_USER_IDENT, EVFILT_USER,
+         0, NOTE_TRIGGER, 0, 0);
+  if (kevent(kq, ev, 2, ev, 1, &timeout) < 1 ||
+      ev[0].filter != EVFILT_USER ||
+      ev[0].ident != UV__KQUEUE_EVFILT_USER_IDENT ||
+      ev[0].flags & EV_ERROR)
+    /* If we wind up here, we can assume that EVFILT_USER is defined but
+     * broken on the current system. */
+    kqueue_evfilt_user_support = 0;
+  uv__close(kq);
+}
+#endif
+
 static void uv__async_send(uv_loop_t* loop);
 static int uv__async_start(uv_loop_t* loop);
 static void uv__cpu_relax(void);
@@ -139,7 +167,11 @@ static void uv__async_io(uv_loop_t* loop, uv__io_t* w, unsigned int events) {
 
   assert(w == &loop->async_io_watcher);
 
+#if UV__KQUEUE_EVFILT_USER
+  for (;!kqueue_evfilt_user_support;) {
+#else
   for (;;) {
+#endif
     r = read(w->fd, buf, sizeof(buf));
 
     if (r == sizeof(buf))
@@ -195,6 +227,17 @@ static void uv__async_send(uv_loop_t* loop) {
     len = sizeof(val);
     fd = loop->async_io_watcher.fd;  /* eventfd */
   }
+#elif UV__KQUEUE_EVFILT_USER
+  struct kevent ev;
+
+  if (kqueue_evfilt_user_support) {
+    fd = loop->async_io_watcher.fd; /* magic number for EVFILT_USER */
+    EV_SET(&ev, fd, EVFILT_USER, 0, NOTE_TRIGGER, 0, 0);
+    r = kevent(loop->backend_fd, &ev, 1, NULL, 0, NULL);
+    if (r == 0)
+      return;
+    abort();
+  }
 #endif
 
   do
@@ -215,6 +258,9 @@ static void uv__async_send(uv_loop_t* loop) {
 static int uv__async_start(uv_loop_t* loop) {
   int pipefd[2];
   int err;
+#if UV__KQUEUE_EVFILT_USER
+  struct kevent ev;
+#endif
 
   if (loop->async_io_watcher.fd != -1)
     return 0;
@@ -226,6 +272,36 @@ static int uv__async_start(uv_loop_t* loop) {
 
   pipefd[0] = err;
   pipefd[1] = -1;
+#elif UV__KQUEUE_EVFILT_USER
+  uv_once(&kqueue_runtime_detection_guard, uv__kqueue_runtime_detection);
+  if (kqueue_evfilt_user_support) {
+    /* In order not to break the generic pattern of I/O polling, a valid
+     * file descriptor is required to take up a room in loop->watchers,
+     * thus we create one for that, but this fd will not be actually used,
+     * it's just a placeholder and magic number which is going to be closed
+     * during the cleanup, as other FDs. */
+    err = uv__open_cloexec("/", O_RDONLY);
+    if (err < 0)
+      return err;
+
+    pipefd[0] = err;
+    pipefd[1] = -1;
+
+    /* When using EVFILT_USER event to wake up the kqueue, this event must be
+     * registered beforehand. Otherwise, calling kevent() to issue an
+     * unregistered EVFILT_USER event will get an ENOENT.
+     * Since uv__async_send() may happen before uv__io_poll() with multi-threads,
+     * we can't defer this registration of EVFILT_USER event as we did for other
+     * events, but must perform it right away. */
+    EV_SET(&ev, err, EVFILT_USER, EV_ADD | EV_CLEAR, 0, 0, 0);
+    err = kevent(loop->backend_fd, &ev, 1, NULL, 0, NULL);
+    if (err < 0)
+      return UV__ERR(errno);
+  } else {
+    err = uv__make_pipe(pipefd, UV_NONBLOCK_PIPE);
+    if (err < 0)
+      return err;
+  }
 #else
   err = uv__make_pipe(pipefd, UV_NONBLOCK_PIPE);
   if (err < 0)
@@ -236,6 +312,13 @@ static int uv__async_start(uv_loop_t* loop) {
   uv__io_start(loop, &loop->async_io_watcher, POLLIN);
   loop->async_wfd = pipefd[1];
 
+#if UV__KQUEUE_EVFILT_USER
+  /* Prevent the EVFILT_USER event from being added to kqueue redundantly
+   * and mistakenly later in uv__io_poll(). */
+  if (kqueue_evfilt_user_support)
+    loop->async_io_watcher.events = loop->async_io_watcher.pevents;
+#endif
+
   return 0;
 }
 

src/unix/bsd-ifaddrs.c

@@ -65,13 +65,13 @@ static int uv__ifaddr_exclude(struct ifaddrs *ent, int exclude_type) {
   return 0;
 }
 
+/* TODO(bnoordhuis) share with linux.c */
 int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
+  uv_interface_address_t* address;
   struct ifaddrs* addrs;
   struct ifaddrs* ent;
-  uv_interface_address_t* address;
+  size_t namelen;
-#if !(defined(__CYGWIN__) || defined(__MSYS__)) && !defined(__GNU__)
+  char* name;
-  int i;
-#endif
 
   *count = 0;
   *addresses = NULL;
@@ -80,9 +80,11 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     return UV__ERR(errno);
 
   /* Count the number of interfaces */
+  namelen = 0;
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent, UV__EXCLUDE_IFADDR))
       continue;
+    namelen += strlen(ent->ifa_name) + 1;
     (*count)++;
   }
 
@@ -92,20 +94,22 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   }
 
   /* Make sure the memory is initiallized to zero using calloc() */
-  *addresses = uv__calloc(*count, sizeof(**addresses));
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
-
   if (*addresses == NULL) {
     freeifaddrs(addrs);
     return UV_ENOMEM;
   }
 
+  name = (char*) &(*addresses)[*count];
   address = *addresses;
 
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent, UV__EXCLUDE_IFADDR))
       continue;
 
-    address->name = uv__strdup(ent->ifa_name);
+    namelen = strlen(ent->ifa_name) + 1;
+    address->name = memcpy(name, ent->ifa_name, namelen);
+    name += namelen;
 
     if (ent->ifa_addr->sa_family == AF_INET6) {
       address->address.address6 = *((struct sockaddr_in6*) ent->ifa_addr);
@@ -129,6 +133,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 #if !(defined(__CYGWIN__) || defined(__MSYS__)) && !defined(__GNU__)
   /* Fill in physical addresses for each interface */
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
+    int i;
+
     if (uv__ifaddr_exclude(ent, UV__EXCLUDE_IFPHYS))
       continue;
 
@@ -151,13 +157,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 }
 
 
+/* TODO(bnoordhuis) share with linux.c */
 void uv_free_interface_addresses(uv_interface_address_t* addresses,
                                  int count) {
-  int i;
-
-  for (i = 0; i < count; i++) {
-    uv__free(addresses[i].name);
-  }
-
   uv__free(addresses);
 }

src/unix/core.c

@@ -52,6 +52,8 @@
 #endif
 
 #if defined(__APPLE__)
+# include <mach/mach.h>
+# include <mach/thread_info.h>
 # include <sys/filio.h>
 # include <sys/sysctl.h>
 #endif /* defined(__APPLE__) */
@@ -751,7 +753,7 @@ ssize_t uv__recvmsg(int fd, struct msghdr* msg, int flags) {
 int uv_cwd(char* buffer, size_t* size) {
   char scratch[1 + UV__PATH_MAX];
 
-  if (buffer == NULL || size == NULL)
+  if (buffer == NULL || size == NULL || *size == 0)
     return UV_EINVAL;
 
   /* Try to read directly into the user's buffer first... */
@@ -999,10 +1001,10 @@ int uv__fd_exists(uv_loop_t* loop, int fd) {
 }
 
 
-int uv_getrusage(uv_rusage_t* rusage) {
+static int uv__getrusage(int who, uv_rusage_t* rusage) {
   struct rusage usage;
 
-  if (getrusage(RUSAGE_SELF, &usage))
+  if (getrusage(who, &usage))
     return UV__ERR(errno);
 
   rusage->ru_utime.tv_sec = usage.ru_utime.tv_sec;
@@ -1041,6 +1043,50 @@ int uv_getrusage(uv_rusage_t* rusage) {
 }
 
 
+int uv_getrusage(uv_rusage_t* rusage) {
+  return uv__getrusage(RUSAGE_SELF, rusage);
+}
+
+
+int uv_getrusage_thread(uv_rusage_t* rusage) {
+#if defined(__APPLE__)
+  mach_msg_type_number_t count;
+  thread_basic_info_data_t info;
+  kern_return_t kr;
+  thread_t thread;
+
+  thread = mach_thread_self();
+  count = THREAD_BASIC_INFO_COUNT;
+  kr = thread_info(thread,
+                   THREAD_BASIC_INFO,
+                   (thread_info_t)&info,
+                   &count);
+
+  if (kr != KERN_SUCCESS) {
+    mach_port_deallocate(mach_task_self(), thread);
+    return UV_EINVAL;
+  }
+
+  memset(rusage, 0, sizeof(*rusage));
+
+  rusage->ru_utime.tv_sec = info.user_time.seconds;
+  rusage->ru_utime.tv_usec = info.user_time.microseconds;
+  rusage->ru_stime.tv_sec = info.system_time.seconds;
+  rusage->ru_stime.tv_usec = info.system_time.microseconds;
+
+  mach_port_deallocate(mach_task_self(), thread);
+
+  return 0;
+
+#elif defined(RUSAGE_LWP)
+  return uv__getrusage(RUSAGE_LWP, rusage);
+#elif defined(RUSAGE_THREAD)
+  return uv__getrusage(RUSAGE_THREAD, rusage);
+#endif  /* defined(__APPLE__) */
+  return UV_ENOTSUP;
+}
+
+
 int uv__open_cloexec(const char* path, int flags) {
 #if defined(O_CLOEXEC)
   int fd;

src/unix/darwin-proctitle.c

@@ -33,25 +33,9 @@
 #include "darwin-stub.h"
 #endif
 
-
-static int uv__pthread_setname_np(const char* name) {
-  char namebuf[64];  /* MAXTHREADNAMESIZE */
-  int err;
-
-  strncpy(namebuf, name, sizeof(namebuf) - 1);
-  namebuf[sizeof(namebuf) - 1] = '\0';
-
-  err = pthread_setname_np(namebuf);
-  if (err)
-    return UV__ERR(err);
-
-  return 0;
-}
-
-
 int uv__set_process_title(const char* title) {
 #if TARGET_OS_IPHONE
-  return uv__pthread_setname_np(title);
+  return uv__thread_setname(title);
 #else
   CFStringRef (*pCFStringCreateWithCString)(CFAllocatorRef,
                                             const char*,
@@ -177,7 +161,7 @@ int uv__set_process_title(const char* title) {
     goto out;
   }
 
-  uv__pthread_setname_np(title);  /* Don't care if it fails. */
+  uv__thread_setname(title);  /* Don't care if it fails. */
   err = 0;
 
 out:

src/unix/fs.c

@@ -203,8 +203,23 @@ static ssize_t uv__fs_fdatasync(uv_fs_t* req) {
 }
 
 
-UV_UNUSED(static struct timespec uv__fs_to_timespec(double time)) {
+#if defined(__APPLE__)                                                        \
+    || defined(_AIX71)                                                        \
+    || defined(__DragonFly__)                                                 \
+    || defined(__FreeBSD__)                                                   \
+    || defined(__HAIKU__)                                                     \
+    || defined(__NetBSD__)                                                    \
+    || defined(__OpenBSD__)                                                   \
+    || defined(__linux__)                                                     \
+    || defined(__sun)
+static struct timespec uv__fs_to_timespec(double time) {
   struct timespec ts;
+
+  if (uv__isinf(time))
+    return (struct timespec){UTIME_NOW, UTIME_NOW};
+  if (uv__isnan(time))
+    return (struct timespec){UTIME_OMIT, UTIME_OMIT};
+
   ts.tv_sec  = time;
   ts.tv_nsec = (time - ts.tv_sec) * 1e9;
 
@@ -221,41 +236,23 @@ UV_UNUSED(static struct timespec uv__fs_to_timespec(double time)) {
   }
   return ts;
 }
+#endif
 
-UV_UNUSED(static struct timeval uv__fs_to_timeval(double time)) {
-  struct timeval tv;
-  tv.tv_sec  = time;
-  tv.tv_usec = (time - tv.tv_sec) * 1e6;
-  if (tv.tv_usec < 0) {
-    tv.tv_usec += 1e6;
-    tv.tv_sec -= 1;
-  }
-  return tv;
-}
 
 static ssize_t uv__fs_futime(uv_fs_t* req) {
-#if defined(__linux__)                                                        \
+#if defined(__APPLE__)                                                        \
     || defined(_AIX71)                                                        \
+    || defined(__DragonFly__)                                                 \
+    || defined(__FreeBSD__)                                                   \
     || defined(__HAIKU__)                                                     \
-    || defined(__GNU__)
+    || defined(__NetBSD__)                                                    \
+    || defined(__OpenBSD__)                                                   \
+    || defined(__linux__)                                                     \
+    || defined(__sun)
   struct timespec ts[2];
   ts[0] = uv__fs_to_timespec(req->atime);
   ts[1] = uv__fs_to_timespec(req->mtime);
   return futimens(req->file, ts);
-#elif defined(__APPLE__)                                                      \
-    || defined(__DragonFly__)                                                 \
-    || defined(__FreeBSD__)                                                   \
-    || defined(__NetBSD__)                                                    \
-    || defined(__OpenBSD__)                                                   \
-    || defined(__sun)
-  struct timeval tv[2];
-  tv[0] = uv__fs_to_timeval(req->atime);
-  tv[1] = uv__fs_to_timeval(req->mtime);
-# if defined(__sun)
-  return futimesat(req->file, NULL, tv);
-# else
-  return futimes(req->file, tv);
-# endif
 #elif defined(__MVS__)
   attrib_t atr;
   memset(&atr, 0, sizeof(atr));
@@ -461,12 +458,7 @@ static ssize_t uv__pwritev_emul(int fd,
 
 /* The function pointer cache is an uintptr_t because _Atomic void*
  * doesn't work on macos/ios/etc...
- * Disable optimization on armv7 to work around the bug described in
- * https://github.com/libuv/libuv/issues/4532
  */
-#if defined(__arm__) && (__ARM_ARCH == 7)
-__attribute__((optimize("O0")))
-#endif
 static ssize_t uv__preadv_or_pwritev(int fd,
                                      const struct iovec* bufs,
                                      size_t nbufs,
@@ -479,7 +471,12 @@ static ssize_t uv__preadv_or_pwritev(int fd,
   p = (void*) atomic_load_explicit(cache, memory_order_relaxed);
   if (p == NULL) {
 #ifdef RTLD_DEFAULT
-    p = dlsym(RTLD_DEFAULT, is_pread ? "preadv" : "pwritev");
+    /* Try _LARGEFILE_SOURCE version of preadv/pwritev first,
+     * then fall back to the plain version, for libcs like musl.
+     */
+    p = dlsym(RTLD_DEFAULT, is_pread ? "preadv64" : "pwritev64");
+    if (p == NULL)
+      p = dlsym(RTLD_DEFAULT, is_pread ? "preadv" : "pwritev");
     dlerror();  /* Clear errors. */
 #endif  /* RTLD_DEFAULT */
     if (p == NULL)
@@ -487,10 +484,7 @@ static ssize_t uv__preadv_or_pwritev(int fd,
     atomic_store_explicit(cache, (uintptr_t) p, memory_order_relaxed);
   }
 
-  /* Use memcpy instead of `f = p` to work around a compiler bug,
+  f = p;
-   * see https://github.com/libuv/libuv/issues/4532
-   */
-  memcpy(&f, &p, sizeof(p));
   return f(fd, bufs, nbufs, off);
 }
 
@@ -1145,25 +1139,20 @@ static ssize_t uv__fs_sendfile(uv_fs_t* req) {
 
 
 static ssize_t uv__fs_utime(uv_fs_t* req) {
-#if defined(__linux__)                                                         \
+#if defined(__APPLE__)                                                        \
-    || defined(_AIX71)                                                         \
+    || defined(_AIX71)                                                        \
-    || defined(__sun)                                                          \
+    || defined(__DragonFly__)                                                 \
-    || defined(__HAIKU__)
+    || defined(__FreeBSD__)                                                   \
+    || defined(__HAIKU__)                                                     \
+    || defined(__NetBSD__)                                                    \
+    || defined(__OpenBSD__)                                                   \
+    || defined(__linux__)                                                     \
+    || defined(__sun)
   struct timespec ts[2];
   ts[0] = uv__fs_to_timespec(req->atime);
   ts[1] = uv__fs_to_timespec(req->mtime);
   return utimensat(AT_FDCWD, req->path, ts, 0);
-#elif defined(__APPLE__)                                                      \
+#elif defined(_AIX) && !defined(_AIX71)
-    || defined(__DragonFly__)                                                 \
-    || defined(__FreeBSD__)                                                   \
-    || defined(__NetBSD__)                                                    \
-    || defined(__OpenBSD__)
-  struct timeval tv[2];
-  tv[0] = uv__fs_to_timeval(req->atime);
-  tv[1] = uv__fs_to_timeval(req->mtime);
-  return utimes(req->path, tv);
-#elif defined(_AIX)                                                           \
-    && !defined(_AIX71)
   struct utimbuf buf;
   buf.actime = req->atime;
   buf.modtime = req->mtime;
@@ -1184,24 +1173,19 @@ static ssize_t uv__fs_utime(uv_fs_t* req) {
 
 
 static ssize_t uv__fs_lutime(uv_fs_t* req) {
-#if defined(__linux__)            ||                                           \
+#if defined(__APPLE__)                                                        \
-    defined(_AIX71)               ||                                           \
+    || defined(_AIX71)                                                        \
-    defined(__sun)                ||                                           \
+    || defined(__DragonFly__)                                                 \
-    defined(__HAIKU__)            ||                                           \
+    || defined(__FreeBSD__)                                                   \
-    defined(__GNU__)              ||                                           \
+    || defined(__HAIKU__)                                                     \
-    defined(__OpenBSD__)
+    || defined(__NetBSD__)                                                    \
+    || defined(__OpenBSD__)                                                   \
+    || defined(__linux__)                                                     \
+    || defined(__sun)
   struct timespec ts[2];
   ts[0] = uv__fs_to_timespec(req->atime);
   ts[1] = uv__fs_to_timespec(req->mtime);
   return utimensat(AT_FDCWD, req->path, ts, AT_SYMLINK_NOFOLLOW);
-#elif defined(__APPLE__)          ||                                          \
-      defined(__DragonFly__)      ||                                          \
-      defined(__FreeBSD__)        ||                                          \
-      defined(__NetBSD__)
-  struct timeval tv[2];
-  tv[0] = uv__fs_to_timeval(req->atime);
-  tv[1] = uv__fs_to_timeval(req->mtime);
-  return lutimes(req->path, tv);
 #else
   errno = ENOSYS;
   return -1;

src/unix/ibmi.c

@@ -403,6 +403,7 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     return UV_ENOSYS;
 
   /* The first loop to get the size of the array to be allocated */
+  namelen = 0;
   for (cur = ifap; cur; cur = cur->ifa_next) {
     if (!(cur->ifa_addr->sa_family == AF_INET6 ||
           cur->ifa_addr->sa_family == AF_INET))
@@ -411,6 +412,7 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     if (!(cur->ifa_flags & IFF_UP && cur->ifa_flags & IFF_RUNNING))
       continue;
 
+    namelen += strlen(cur->ifa_name) + 1;
     (*count)++;
   }
 
@@ -420,11 +422,13 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   }
 
   /* Alloc the return interface structs */
-  *addresses = uv__calloc(*count, sizeof(**addresses));
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
   if (*addresses == NULL) {
     Qp2freeifaddrs(ifap);
     return UV_ENOMEM;
   }
+
+  name = (char*) &(*addresses)[*count];
   address = *addresses;
 
   /* The second loop to fill in the array */
@@ -436,7 +440,9 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     if (!(cur->ifa_flags & IFF_UP && cur->ifa_flags & IFF_RUNNING))
       continue;
 
-    address->name = uv__strdup(cur->ifa_name);
+    namelen = strlen(cur->ifa_name) + 1;
+    address->name = memcpy(name, cur->ifa_name, namelen);
+    name += namelen;
 
     inet6 = (cur->ifa_addr->sa_family == AF_INET6);
 
@@ -497,13 +503,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 }
 
 
-void uv_free_interface_addresses(uv_interface_address_t* addresses, int count) {
+void uv_free_interface_addresses(uv_interface_address_t* addresses,
-  int i;
+                                 int count) {
-
-  for (i = 0; i < count; ++i) {
-    uv__free(addresses[i].name);
-  }
-
   uv__free(addresses);
 }
 

src/unix/internal.h

@@ -35,6 +35,10 @@
 #include <sys/socket.h>
 #include <sys/stat.h>
 #include <sys/types.h>
+#if defined(__APPLE__) || defined(__DragonFly__) || \
+    defined(__FreeBSD__) || defined(__NetBSD__)
+#include <sys/event.h>
+#endif
 
 #define uv__msan_unpoison(p, n)                                               \
   do {                                                                        \
@@ -323,6 +327,8 @@ void uv__prepare_close(uv_prepare_t* handle);
 void uv__process_close(uv_process_t* handle);
 void uv__stream_close(uv_stream_t* handle);
 void uv__tcp_close(uv_tcp_t* handle);
+int uv__thread_setname(const char* name);
+int uv__thread_getname(uv_thread_t* tid, char* name, size_t size);
 size_t uv__thread_stack_size(void);
 void uv__udp_close(uv_udp_t* handle);
 void uv__udp_finish_close(uv_udp_t* handle);
@@ -504,4 +510,22 @@ int uv__get_constrained_cpu(uv__cpu_constraint* constraint);
 #endif
 #endif
 
+#if defined(EVFILT_USER) && defined(NOTE_TRIGGER)
+/* EVFILT_USER is available since OS X 10.6, DragonFlyBSD 4.0,
+ * FreeBSD 8.1, and NetBSD 10.0.
+ *
+ * Note that even though EVFILT_USER is defined on the current system,
+ * it may still fail to work at runtime somehow. In that case, we fall
+ * back to pipe-based signaling.
+ */
+#define UV__KQUEUE_EVFILT_USER 1
+/* Magic number of identifier used for EVFILT_USER during runtime detection.
+ * There are no Google hits for this number when I create it. That way,
+ * people will be directed here if this number gets printed due to some
+ * kqueue error and they google for help. */
+#define UV__KQUEUE_EVFILT_USER_IDENT 0x1e7e7711
+#else
+#define UV__KQUEUE_EVFILT_USER 0
+#endif
+
 #endif /* UV_UNIX_INTERNAL_H_ */

src/unix/kqueue.c

@@ -97,8 +97,7 @@ int uv__io_fork(uv_loop_t* loop) {
 
 
 int uv__io_check_fd(uv_loop_t* loop, int fd) {
-  struct kevent ev;
+  struct kevent ev[2];
-  int rc;
   struct stat sb;
 #ifdef __APPLE__
   char path[MAXPATHLEN];
@@ -133,17 +132,12 @@ int uv__io_check_fd(uv_loop_t* loop, int fd) {
   }
 #endif
 
-  rc = 0;
+  EV_SET(ev, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
-  EV_SET(&ev, fd, EVFILT_READ, EV_ADD, 0, 0, 0);
+  EV_SET(ev + 1, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
-  if (kevent(loop->backend_fd, &ev, 1, NULL, 0, NULL))
+  if (kevent(loop->backend_fd, ev, 2, NULL, 0, NULL))
-    rc = UV__ERR(errno);
+    return UV__ERR(errno);
 
-  EV_SET(&ev, fd, EVFILT_READ, EV_DELETE, 0, 0, 0);
+  return 0;
-  if (rc == 0)
-    if (kevent(loop->backend_fd, &ev, 1, NULL, 0, NULL))
-      abort();
-
-  return rc;
 }
 
 
@@ -367,6 +361,17 @@ void uv__io_poll(uv_loop_t* loop, int timeout) {
         continue;
       }
 
+#if UV__KQUEUE_EVFILT_USER
+      if (ev->filter == EVFILT_USER) {
+        w = &loop->async_io_watcher;
+        assert(fd == w->fd);
+        uv__metrics_update_idle_time(loop);
+        w->cb(loop, w, w->events);
+        nevents++;
+        continue;
+      }
+#endif
+
       if (ev->filter == EVFILT_VNODE) {
         assert(w->events == POLLIN);
         assert(w->pevents == POLLIN);

src/unix/linux.c

@@ -455,7 +455,7 @@ int uv__io_uring_register(int fd, unsigned opcode, void* arg, unsigned nargs) {
 }
 
 
-static int uv__use_io_uring(void) {
+static int uv__use_io_uring(uint32_t flags) {
 #if defined(__ANDROID_API__)
   return 0;  /* Possibly available but blocked by seccomp. */
 #elif defined(__arm__) && __SIZEOF_POINTER__ == 4
@@ -470,25 +470,27 @@ static int uv__use_io_uring(void) {
   char* val;
   int use;
 
+#if defined(__hppa__)
+  /* io_uring first supported on parisc in 6.1, functional in .51
+   * https://lore.kernel.org/all/cb912694-b1fe-dbb0-4d8c-d608f3526905@gmx.de/
+   */
+  if (uv__kernel_version() < /*6.1.51*/0x060133)
+    return 0;
+#endif
+
+  /* SQPOLL is all kinds of buggy but epoll batching should work fine. */
+  if (0 == (flags & UV__IORING_SETUP_SQPOLL))
+    return 1;
+
+  /* Older kernels have a bug where the sqpoll thread uses 100% CPU. */
+  if (uv__kernel_version() < /*5.10.186*/0x050ABA)
+    return 0;
+
   use = atomic_load_explicit(&use_io_uring, memory_order_relaxed);
 
   if (use == 0) {
-    use = uv__kernel_version() >=
-#if defined(__hppa__)
-    /* io_uring first supported on parisc in 6.1, functional in .51 */
-    /* https://lore.kernel.org/all/cb912694-b1fe-dbb0-4d8c-d608f3526905@gmx.de/ */
-    /* 6.1.51 */ 0x060133
-#else
-    /* Older kernels have a bug where the sqpoll thread uses 100% CPU. */
-    /* 5.10.186 */ 0x050ABA
-#endif
-    ? 1 : -1;
-
-    /* But users can still enable it if they so desire. */
     val = getenv("UV_USE_IO_URING");
-    if (val != NULL)
+    use = val != NULL && atoi(val) > 0 ? 1 : -1;
-      use = atoi(val) ? 1 : -1;
-
     atomic_store_explicit(&use_io_uring, use, memory_order_relaxed);
   }
 
@@ -518,7 +520,7 @@ static void uv__iou_init(int epollfd,
   sq = MAP_FAILED;
   sqe = MAP_FAILED;
 
-  if (!uv__use_io_uring())
+  if (!uv__use_io_uring(flags))
     return;
 
   kernel_version = uv__kernel_version();
@@ -766,14 +768,13 @@ static struct uv__io_uring_sqe* uv__iou_get_sqe(struct uv__iou* iou,
    */
   if (iou->ringfd == -2) {
     /* By default, the SQPOLL is not created. Enable only if the loop is
-     * configured with UV_LOOP_USE_IO_URING_SQPOLL.
+     * configured with UV_LOOP_USE_IO_URING_SQPOLL and the UV_USE_IO_URING
+     * environment variable is unset or a positive number.
      */
-    if ((loop->flags & UV_LOOP_ENABLE_IO_URING_SQPOLL) == 0) {
+    if (loop->flags & UV_LOOP_ENABLE_IO_URING_SQPOLL)
-      iou->ringfd = -1;
+      if (uv__use_io_uring(UV__IORING_SETUP_SQPOLL))
-      return NULL;
+        uv__iou_init(loop->backend_fd, iou, 64, UV__IORING_SETUP_SQPOLL);
-    }
 
-    uv__iou_init(loop->backend_fd, iou, 64, UV__IORING_SETUP_SQPOLL);
     if (iou->ringfd == -2)
       iou->ringfd = -1;  /* "failed" */
   }
@@ -1713,16 +1714,22 @@ int uv_uptime(double* uptime) {
 int uv_cpu_info(uv_cpu_info_t** ci, int* count) {
 #if defined(__PPC__)
   static const char model_marker[] = "cpu\t\t: ";
+  static const char model_marker2[] = "";
 #elif defined(__arm__)
-  static const char model_marker[] = "Processor\t: ";
+  static const char model_marker[] = "model name\t: ";
+  static const char model_marker2[] = "Processor\t: ";
 #elif defined(__aarch64__)
   static const char model_marker[] = "CPU part\t: ";
+  static const char model_marker2[] = "";
 #elif defined(__mips__)
   static const char model_marker[] = "cpu model\t\t: ";
+  static const char model_marker2[] = "";
 #elif defined(__loongarch__)
   static const char model_marker[] = "cpu family\t\t: ";
+  static const char model_marker2[] = "";
 #else
   static const char model_marker[] = "model name\t: ";
+  static const char model_marker2[] = "";
 #endif
   static const char parts[] =
 #ifdef __aarch64__
@@ -1821,14 +1828,22 @@ int uv_cpu_info(uv_cpu_info_t** ci, int* count) {
     if (1 != fscanf(fp, "processor\t: %u\n", &cpu))
       break;  /* Parse error. */
 
-    found = 0;
+    while (fgets(buf, sizeof(buf), fp)) {
-    while (!found && fgets(buf, sizeof(buf), fp))
+      if (!strncmp(buf, model_marker, sizeof(model_marker) - 1)) {
-      found = !strncmp(buf, model_marker, sizeof(model_marker) - 1);
+        p = buf + sizeof(model_marker) - 1;
+        goto parts;
+      }
+      if (!*model_marker2)
+        continue;
+      if (!strncmp(buf, model_marker2, sizeof(model_marker2) - 1)) {
+        p = buf + sizeof(model_marker2) - 1;
+        goto parts;
+      }
+    }
 
-    if (!found)
+    goto next;  /* Not found. */
-      goto next;
 
-    p = buf + sizeof(model_marker) - 1;
+parts:
     n = (int) strcspn(p, "\n");
 
     /* arm64: translate CPU part code to model name. */
@@ -1939,11 +1954,15 @@ static int uv__ifaddr_exclude(struct ifaddrs *ent, int exclude_type) {
   return !exclude_type;
 }
 
+/* TODO(bnoordhuis) share with bsd-ifaddrs.c */
 int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
-  struct ifaddrs *addrs, *ent;
   uv_interface_address_t* address;
+  struct sockaddr_ll* sll;
+  struct ifaddrs* addrs;
+  struct ifaddrs* ent;
+  size_t namelen;
+  char* name;
   int i;
-  struct sockaddr_ll *sll;
 
   *count = 0;
   *addresses = NULL;
@@ -1952,10 +1971,12 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     return UV__ERR(errno);
 
   /* Count the number of interfaces */
+  namelen = 0;
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent, UV__EXCLUDE_IFADDR))
       continue;
 
+    namelen += strlen(ent->ifa_name) + 1;
     (*count)++;
   }
 
@@ -1965,19 +1986,22 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   }
 
   /* Make sure the memory is initiallized to zero using calloc() */
-  *addresses = uv__calloc(*count, sizeof(**addresses));
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
-  if (!(*addresses)) {
+  if (*addresses == NULL) {
     freeifaddrs(addrs);
     return UV_ENOMEM;
   }
 
+  name = (char*) &(*addresses)[*count];
   address = *addresses;
 
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent, UV__EXCLUDE_IFADDR))
       continue;
 
-    address->name = uv__strdup(ent->ifa_name);
+    namelen = strlen(ent->ifa_name) + 1;
+    address->name = memcpy(name, ent->ifa_name, namelen);
+    name += namelen;
 
     if (ent->ifa_addr->sa_family == AF_INET6) {
       address->address.address6 = *((struct sockaddr_in6*) ent->ifa_addr);
@@ -2021,14 +2045,9 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 }
 
 
+/* TODO(bnoordhuis) share with bsd-ifaddrs.c */
 void uv_free_interface_addresses(uv_interface_address_t* addresses,
-  int count) {
+                                 int count) {
-  int i;
-
-  for (i = 0; i < count; i++) {
-    uv__free(addresses[i].name);
-  }
-
   uv__free(addresses);
 }
 

src/unix/pipe.c

@@ -360,6 +360,9 @@ static int uv__pipe_getsockpeername(const uv_pipe_t* handle,
   char* p;
   int err;
 
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
   addrlen = sizeof(sa);
   memset(&sa, 0, addrlen);
   err = uv__getsockpeername((const uv_handle_t*) handle,
@@ -444,7 +447,7 @@ uv_handle_type uv_pipe_pending_type(uv_pipe_t* handle) {
 int uv_pipe_chmod(uv_pipe_t* handle, int mode) {
   unsigned desired_mode;
   struct stat pipe_stat;
-  char* name_buffer;
+  char name_buffer[1 + UV__PATH_MAX];
   size_t name_len;
   int r;
 
@@ -457,26 +460,14 @@ int uv_pipe_chmod(uv_pipe_t* handle, int mode) {
     return UV_EINVAL;
 
   /* Unfortunately fchmod does not work on all platforms, we will use chmod. */
-  name_len = 0;
+  name_len = sizeof(name_buffer);
-  r = uv_pipe_getsockname(handle, NULL, &name_len);
-  if (r != UV_ENOBUFS)
-    return r;
-
-  name_buffer = uv__malloc(name_len);
-  if (name_buffer == NULL)
-    return UV_ENOMEM;
-
   r = uv_pipe_getsockname(handle, name_buffer, &name_len);
-  if (r != 0) {
+  if (r != 0)
-    uv__free(name_buffer);
     return r;
-  }
 
   /* stat must be used as fstat has a bug on Darwin */
-  if (uv__stat(name_buffer, &pipe_stat) == -1) {
+  if (uv__stat(name_buffer, &pipe_stat) == -1)
-    uv__free(name_buffer);
+    return UV__ERR(errno);
-    return -errno;
-  }
 
   desired_mode = 0;
   if (mode & UV_READABLE)
@@ -485,15 +476,12 @@ int uv_pipe_chmod(uv_pipe_t* handle, int mode) {
     desired_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
 
   /* Exit early if pipe already has desired mode. */
-  if ((pipe_stat.st_mode & desired_mode) == desired_mode) {
+  if ((pipe_stat.st_mode & desired_mode) == desired_mode)
-    uv__free(name_buffer);
     return 0;
-  }
 
   pipe_stat.st_mode |= desired_mode;
 
   r = chmod(name_buffer, pipe_stat.st_mode);
-  uv__free(name_buffer);
 
   return r != -1 ? 0 : UV__ERR(errno);
 }

src/unix/poll.c

@@ -24,7 +24,6 @@
 
 #include <unistd.h>
 #include <assert.h>
-#include <errno.h>
 
 
 static void uv__poll_io(uv_loop_t* loop, uv__io_t* w, unsigned int events) {

src/unix/process.c

@@ -188,8 +188,12 @@ void uv__wait_children(uv_loop_t* loop) {
 static int uv__process_init_stdio(uv_stdio_container_t* container, int fds[2]) {
   int mask;
   int fd;
+  int ret;
+  int size;
+  int i;
 
   mask = UV_IGNORE | UV_CREATE_PIPE | UV_INHERIT_FD | UV_INHERIT_STREAM;
+  size = 64 * 1024;
 
   switch (container->flags & mask) {
   case UV_IGNORE:
@@ -199,8 +203,17 @@ static int uv__process_init_stdio(uv_stdio_container_t* container, int fds[2]) {
     assert(container->data.stream != NULL);
     if (container->data.stream->type != UV_NAMED_PIPE)
       return UV_EINVAL;
-    else
+    else {
-      return uv_socketpair(SOCK_STREAM, 0, fds, 0, 0);
+      ret = uv_socketpair(SOCK_STREAM, 0, fds, 0, 0);
+
+      if (ret == 0)
+        for (i = 0; i < 2; i++) {
+          setsockopt(fds[i], SOL_SOCKET, SO_RCVBUF, &size, sizeof(size));
+          setsockopt(fds[i], SOL_SOCKET, SO_SNDBUF, &size, sizeof(size));
+        }
+    }
+
+    return ret;
 
   case UV_INHERIT_FD:
   case UV_INHERIT_STREAM:

src/unix/sunos.c

@@ -826,6 +826,8 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
   uv_interface_address_t* address;
   struct ifaddrs* addrs;
   struct ifaddrs* ent;
+  size_t namelen;
+  char* name;
 
   *count = 0;
   *addresses = NULL;
@@ -834,9 +836,11 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     return UV__ERR(errno);
 
   /* Count the number of interfaces */
+  namelen = 0;
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent))
       continue;
+    namelen += strlen(ent->ifa_name) + 1;
     (*count)++;
   }
 
@@ -845,19 +849,22 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
     return 0;
   }
 
-  *addresses = uv__malloc(*count * sizeof(**addresses));
+  *addresses = uv__calloc(1, *count * sizeof(**addresses) + namelen);
-  if (!(*addresses)) {
+  if (*addresses == NULL) {
     freeifaddrs(addrs);
     return UV_ENOMEM;
   }
 
+  name = (char*) &(*addresses)[*count];
   address = *addresses;
 
   for (ent = addrs; ent != NULL; ent = ent->ifa_next) {
     if (uv__ifaddr_exclude(ent))
       continue;
 
-    address->name = uv__strdup(ent->ifa_name);
+    namelen = strlen(ent->ifa_name) + 1;
+    address->name = memcpy(name, ent->ifa_name, namelen);
+    name += namelen;
 
     if (ent->ifa_addr->sa_family == AF_INET6) {
       address->address.address6 = *((struct sockaddr_in6*) ent->ifa_addr);
@@ -885,13 +892,7 @@ int uv_interface_addresses(uv_interface_address_t** addresses, int* count) {
 #endif  /* SUNOS_NO_IFADDRS */
 
 void uv_free_interface_addresses(uv_interface_address_t* addresses,
-  int count) {
+                                 int count) {
-  int i;
-
-  for (i = 0; i < count; i++) {
-    uv__free(addresses[i].name);
-  }
-
   uv__free(addresses);
 }
 

src/unix/thread.c

@@ -23,6 +23,9 @@
 #include "internal.h"
 
 #include <pthread.h>
+#ifdef __OpenBSD__
+#include <pthread_np.h>
+#endif
 #include <assert.h>
 #include <errno.h>
 
@@ -126,6 +129,12 @@ int uv_thread_create(uv_thread_t *tid, void (*entry)(void *arg), void *arg) {
   return uv_thread_create_ex(tid, &params, entry, arg);
 }
 
+
+int uv_thread_detach(uv_thread_t *tid) {
+  return UV__ERR(pthread_detach(*tid));
+}
+
+
 int uv_thread_create_ex(uv_thread_t* tid,
                         const uv_thread_options_t* params,
                         void (*entry)(void *arg),
@@ -205,7 +214,7 @@ int uv_thread_setaffinity(uv_thread_t* tid,
     if (cpumask[i])
       CPU_SET(i, &cpuset);
 
-#if defined(__ANDROID__)
+#if defined(__ANDROID__) || defined(__OHOS__)
   if (sched_setaffinity(pthread_gettid_np(*tid), sizeof(cpuset), &cpuset))
     r = errno;
   else
@@ -233,7 +242,7 @@ int uv_thread_getaffinity(uv_thread_t* tid,
     return UV_EINVAL;
 
   CPU_ZERO(&cpuset);
-#if defined(__ANDROID__)
+#if defined(__ANDROID__) || defined(__OHOS__)
   if (sched_getaffinity(pthread_gettid_np(*tid), sizeof(cpuset), &cpuset))
     r = errno;
   else
@@ -291,6 +300,18 @@ int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2) {
   return pthread_equal(*t1, *t2);
 }
 
+int uv_thread_setname(const char* name) {
+  if (name == NULL)
+    return UV_EINVAL;
+  return uv__thread_setname(name);
+}
+
+int uv_thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  if (name == NULL || size == 0)
+    return UV_EINVAL;
+
+  return uv__thread_getname(tid, name, size);
+}
 
 int uv_mutex_init(uv_mutex_t* mutex) {
 #if defined(NDEBUG) || !defined(PTHREAD_MUTEX_ERRORCHECK)
@@ -875,3 +896,80 @@ void uv_key_set(uv_key_t* key, void* value) {
   if (pthread_setspecific(*key, value))
     abort();
 }
+
+#if defined(_AIX) || defined(__MVS__) || defined(__PASE__)
+int uv__thread_setname(const char* name) {
+  return UV_ENOSYS;
+}
+#elif defined(__APPLE__)
+int uv__thread_setname(const char* name) {
+  char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
+  strncpy(namebuf, name, sizeof(namebuf) - 1);
+  namebuf[sizeof(namebuf) - 1] = '\0';
+  int err = pthread_setname_np(namebuf);
+  if (err)
+    return UV__ERR(errno);
+  return 0;
+}
+#elif defined(__NetBSD__)
+int uv__thread_setname(const char* name) {
+  char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
+  strncpy(namebuf, name, sizeof(namebuf) - 1);
+  namebuf[sizeof(namebuf) - 1] = '\0';
+  return UV__ERR(pthread_setname_np(pthread_self(), "%s", namebuf));
+}
+#elif defined(__OpenBSD__)
+int uv__thread_setname(const char* name) {
+  char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
+  strncpy(namebuf, name, sizeof(namebuf) - 1);
+  namebuf[sizeof(namebuf) - 1] = '\0';
+  pthread_set_name_np(pthread_self(), namebuf);
+  return 0;
+}
+#else
+int uv__thread_setname(const char* name) {
+  char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
+  strncpy(namebuf, name, sizeof(namebuf) - 1);
+  namebuf[sizeof(namebuf) - 1] = '\0';
+  return UV__ERR(pthread_setname_np(pthread_self(), namebuf));
+}
+#endif
+
+#if (defined(__ANDROID_API__) && __ANDROID_API__ < 26) || \
+    defined(_AIX) || \
+    defined(__MVS__) || \
+    defined(__PASE__)
+int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  return UV_ENOSYS;
+}
+#elif defined(__OpenBSD__)
+int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
+  pthread_get_name_np(*tid, thread_name, sizeof(thread_name));
+  strncpy(name, thread_name, size - 1);
+  name[size - 1] = '\0';
+  return 0;
+}
+#elif defined(__APPLE__)
+int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
+  if (pthread_getname_np(*tid, thread_name, sizeof(thread_name)) != 0)
+    return UV__ERR(errno);
+
+  strncpy(name, thread_name, size - 1);
+  name[size - 1] = '\0';
+  return 0;
+}
+#else
+int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  int r;
+  char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
+  r = pthread_getname_np(*tid, thread_name, sizeof(thread_name));
+  if (r != 0)
+    return UV__ERR(r);
+
+  strncpy(name, thread_name, size - 1);
+  name[size - 1] = '\0';
+  return 0;
+}
+#endif

src/unix/tty.c

@@ -284,6 +284,11 @@ int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
   int fd;
   int rc;
 
+  if (uv__is_raw_tty_mode(mode)) {
+    /* There is only a single raw TTY mode on UNIX. */
+    mode = UV_TTY_MODE_RAW;
+  }
+
   if (tty->mode == (int) mode)
     return 0;
 
@@ -324,6 +329,8 @@ int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
     case UV_TTY_MODE_IO:
       uv__tty_make_raw(&tmp);
       break;
+    default:
+      UNREACHABLE();
   }
 
   /* Apply changes after draining */

src/unix/udp.c

@@ -47,6 +47,10 @@ static void uv__udp_sendmsg(uv_udp_t* handle);
 static int uv__udp_maybe_deferred_bind(uv_udp_t* handle,
                                        int domain,
                                        unsigned int flags);
+static int uv__udp_sendmsg1(int fd,
+                            const uv_buf_t* bufs,
+                            unsigned int nbufs,
+                            const struct sockaddr* addr);
 
 
 void uv__udp_close(uv_udp_t* handle) {
@@ -282,169 +286,6 @@ static void uv__udp_recvmsg(uv_udp_t* handle) {
       && handle->recv_cb != NULL);
 }
 
-static void uv__udp_sendmsg_one(uv_udp_t* handle, uv_udp_send_t* req) {
-  struct uv__queue* q;
-  struct msghdr h;
-  ssize_t size;
-
-  for (;;) {
-    memset(&h, 0, sizeof h);
-    if (req->addr.ss_family == AF_UNSPEC) {
-      h.msg_name = NULL;
-      h.msg_namelen = 0;
-    } else {
-      h.msg_name = &req->addr;
-      if (req->addr.ss_family == AF_INET6)
-        h.msg_namelen = sizeof(struct sockaddr_in6);
-      else if (req->addr.ss_family == AF_INET)
-        h.msg_namelen = sizeof(struct sockaddr_in);
-      else if (req->addr.ss_family == AF_UNIX)
-        h.msg_namelen = sizeof(struct sockaddr_un);
-      else {
-        assert(0 && "unsupported address family");
-        abort();
-      }
-    }
-    h.msg_iov = (struct iovec*) req->bufs;
-    h.msg_iovlen = req->nbufs;
-
-    do
-      size = sendmsg(handle->io_watcher.fd, &h, 0);
-    while (size == -1 && errno == EINTR);
-
-    if (size == -1)
-      if (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
-        return;
-
-    req->status = (size == -1 ? UV__ERR(errno) : size);
-
-    /* Sending a datagram is an atomic operation: either all data
-     * is written or nothing is (and EMSGSIZE is raised). That is
-     * why we don't handle partial writes. Just pop the request
-     * off the write queue and onto the completed queue, done.
-     */
-    uv__queue_remove(&req->queue);
-    uv__queue_insert_tail(&handle->write_completed_queue, &req->queue);
-    uv__io_feed(handle->loop, &handle->io_watcher);
-
-    if (uv__queue_empty(&handle->write_queue))
-      return;
-
-    q = uv__queue_head(&handle->write_queue);
-    req = uv__queue_data(q, uv_udp_send_t, queue);
-  }
-}
-
-#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__)
-static void uv__udp_sendmsg_many(uv_udp_t* handle) {
-  uv_udp_send_t* req;
-  struct mmsghdr h[20];
-  struct mmsghdr* p;
-  struct uv__queue* q;
-  ssize_t npkts;
-  size_t pkts;
-  size_t i;
-
-write_queue_drain:
-  for (pkts = 0, q = uv__queue_head(&handle->write_queue);
-       pkts < ARRAY_SIZE(h) && q != &handle->write_queue;
-       ++pkts, q = uv__queue_head(q)) {
-    req = uv__queue_data(q, uv_udp_send_t, queue);
-
-    p = &h[pkts];
-    memset(p, 0, sizeof(*p));
-    if (req->addr.ss_family == AF_UNSPEC) {
-      p->msg_hdr.msg_name = NULL;
-      p->msg_hdr.msg_namelen = 0;
-    } else {
-      p->msg_hdr.msg_name = &req->addr;
-      if (req->addr.ss_family == AF_INET6)
-        p->msg_hdr.msg_namelen = sizeof(struct sockaddr_in6);
-      else if (req->addr.ss_family == AF_INET)
-        p->msg_hdr.msg_namelen = sizeof(struct sockaddr_in);
-      else if (req->addr.ss_family == AF_UNIX)
-        p->msg_hdr.msg_namelen = sizeof(struct sockaddr_un);
-      else {
-        assert(0 && "unsupported address family");
-        abort();
-      }
-    }
-    h[pkts].msg_hdr.msg_iov = (struct iovec*) req->bufs;
-    h[pkts].msg_hdr.msg_iovlen = req->nbufs;
-  }
-
-#if defined(__APPLE__)
-  do
-    npkts = sendmsg_x(handle->io_watcher.fd, h, pkts, MSG_DONTWAIT);
-  while (npkts == -1 && errno == EINTR);
-#else
-  do
-    npkts = sendmmsg(handle->io_watcher.fd, h, pkts, 0);
-  while (npkts == -1 && errno == EINTR);
-#endif
-
-  if (npkts < 1) {
-    if (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
-      return;
-    for (i = 0, q = uv__queue_head(&handle->write_queue);
-         i < pkts && q != &handle->write_queue;
-         ++i, q = uv__queue_head(&handle->write_queue)) {
-      req = uv__queue_data(q, uv_udp_send_t, queue);
-      req->status = UV__ERR(errno);
-      uv__queue_remove(&req->queue);
-      uv__queue_insert_tail(&handle->write_completed_queue, &req->queue);
-    }
-    uv__io_feed(handle->loop, &handle->io_watcher);
-    return;
-  }
-
-  /* Safety: npkts known to be >0 below. Hence cast from ssize_t
-   * to size_t safe.
-   */
-  for (i = 0, q = uv__queue_head(&handle->write_queue);
-       i < (size_t)npkts && q != &handle->write_queue;
-       ++i, q = uv__queue_head(&handle->write_queue)) {
-    req = uv__queue_data(q, uv_udp_send_t, queue);
-    req->status = req->bufs[0].len;
-
-    /* Sending a datagram is an atomic operation: either all data
-     * is written or nothing is (and EMSGSIZE is raised). That is
-     * why we don't handle partial writes. Just pop the request
-     * off the write queue and onto the completed queue, done.
-     */
-    uv__queue_remove(&req->queue);
-    uv__queue_insert_tail(&handle->write_completed_queue, &req->queue);
-  }
-
-  /* couldn't batch everything, continue sending (jump to avoid stack growth) */
-  if (!uv__queue_empty(&handle->write_queue))
-    goto write_queue_drain;
-
-  uv__io_feed(handle->loop, &handle->io_watcher);
-}
-#endif  /* __linux__ || ____FreeBSD__ || __APPLE__ */
-
-static void uv__udp_sendmsg(uv_udp_t* handle) {
-  struct uv__queue* q;
-  uv_udp_send_t* req;
-
-  if (uv__queue_empty(&handle->write_queue))
-    return;
-
-  q = uv__queue_head(&handle->write_queue);
-  req = uv__queue_data(q, uv_udp_send_t, queue);
-
-#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__)
-  /* Use sendmmsg() if this send request contains more than one datagram OR
-   * there is more than one send request (because that automatically implies
-   * there is more than one datagram.)
-   */
-  if (req->nbufs != 1 || &handle->write_queue != uv__queue_next(&req->queue))
-    return uv__udp_sendmsg_many(handle);
-#endif
-
-  return uv__udp_sendmsg_one(handle, req);
-}
 
 /* On the BSDs, SO_REUSEPORT implies SO_REUSEADDR but with some additional
  * refinements for programs that use multicast. Therefore we preferentially
@@ -743,11 +584,11 @@ int uv__udp_send(uv_udp_send_t* req,
   empty_queue = (handle->send_queue_count == 0);
 
   uv__req_init(handle->loop, req, UV_UDP_SEND);
-  assert(addrlen <= sizeof(req->addr));
+  assert(addrlen <= sizeof(req->u.storage));
   if (addr == NULL)
-    req->addr.ss_family = AF_UNSPEC;
+    req->u.storage.ss_family = AF_UNSPEC;
   else
-    memcpy(&req->addr, addr, addrlen);
+    memcpy(&req->u.storage, addr, addrlen);
   req->send_cb = send_cb;
   req->handle = handle;
   req->nbufs = nbufs;
@@ -790,10 +631,9 @@ int uv__udp_try_send(uv_udp_t* handle,
                      const struct sockaddr* addr,
                      unsigned int addrlen) {
   int err;
-  struct msghdr h;
-  ssize_t size;
 
-  assert(nbufs > 0);
+  if (nbufs < 1)
+    return UV_EINVAL;
 
   /* already sending a message */
   if (handle->send_queue_count != 0)
@@ -807,24 +647,11 @@ int uv__udp_try_send(uv_udp_t* handle,
     assert(handle->flags & UV_HANDLE_UDP_CONNECTED);
   }
 
-  memset(&h, 0, sizeof h);
+  err = uv__udp_sendmsg1(handle->io_watcher.fd, bufs, nbufs, addr);
-  h.msg_name = (struct sockaddr*) addr;
+  if (err > 0)
-  h.msg_namelen = addrlen;
+    return uv__count_bufs(bufs, nbufs);
-  h.msg_iov = (struct iovec*) bufs;
-  h.msg_iovlen = nbufs;
 
-  do {
+  return err;
-    size = sendmsg(handle->io_watcher.fd, &h, 0);
-  } while (size == -1 && errno == EINTR);
-
-  if (size == -1) {
-    if (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
-      return UV_EAGAIN;
-    else
-      return UV__ERR(errno);
-  }
-
-  return size;
 }
 
 
@@ -1401,3 +1228,194 @@ int uv__udp_recv_stop(uv_udp_t* handle) {
 
   return 0;
 }
+
+
+static int uv__udp_prep_pkt(struct msghdr* h,
+                            const uv_buf_t* bufs,
+                            const unsigned int nbufs,
+                            const struct sockaddr* addr) {
+  memset(h, 0, sizeof(*h));
+  h->msg_name = (void*) addr;
+  h->msg_iov = (void*) bufs;
+  h->msg_iovlen = nbufs;
+  if (addr == NULL)
+    return 0;
+  switch (addr->sa_family) {
+  case AF_INET:
+    h->msg_namelen = sizeof(struct sockaddr_in);
+    return 0;
+  case AF_INET6:
+    h->msg_namelen = sizeof(struct sockaddr_in6);
+    return 0;
+  case AF_UNIX:
+    h->msg_namelen = sizeof(struct sockaddr_un);
+    return 0;
+  case AF_UNSPEC:
+    h->msg_name = NULL;
+    return 0;
+  }
+  return UV_EINVAL;
+}
+
+
+static int uv__udp_sendmsg1(int fd,
+                            const uv_buf_t* bufs,
+                            unsigned int nbufs,
+                            const struct sockaddr* addr) {
+  struct msghdr h;
+  int r;
+
+  if ((r = uv__udp_prep_pkt(&h, bufs, nbufs, addr)))
+    return r;
+
+  do
+    r = sendmsg(fd, &h, 0);
+  while (r == -1 && errno == EINTR);
+
+  if (r < 0) {
+    r = UV__ERR(errno);
+    if (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
+      r = UV_EAGAIN;
+    return r;
+  }
+
+  /* UDP sockets don't EOF so we don't have to handle r=0 specially,
+   * that only happens when the input was a zero-sized buffer.
+   */
+  return 1;
+}
+
+
+static int uv__udp_sendmsgv(int fd,
+                            unsigned int count,
+                            uv_buf_t* bufs[/*count*/],
+                            unsigned int nbufs[/*count*/],
+                            struct sockaddr* addrs[/*count*/]) {
+  unsigned int i;
+  int nsent;
+  int r;
+
+  r = 0;
+  nsent = 0;
+
+#if defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) || \
+  (defined(__sun__) && defined(MSG_WAITFORONE))
+  if (count > 1) {
+    for (i = 0; i < count; /*empty*/) {
+      struct mmsghdr m[20];
+      unsigned int n;
+
+      for (n = 0; i < count && n < ARRAY_SIZE(m); i++, n++)
+        if ((r = uv__udp_prep_pkt(&m[n].msg_hdr, bufs[i], nbufs[i], addrs[i])))
+          goto exit;
+
+      do
+#if defined(__APPLE__)
+        r = sendmsg_x(fd, m, n, MSG_DONTWAIT);
+#else
+        r = sendmmsg(fd, m, n, 0);
+#endif
+      while (r == -1 && errno == EINTR);
+
+      if (r < 1)
+        goto exit;
+
+      nsent += r;
+      i += r;
+    }
+
+    goto exit;
+  }
+#endif  /* defined(__linux__) || defined(__FreeBSD__) || defined(__APPLE__) ||
+	 * (defined(__sun__) && defined(MSG_WAITFORONE))
+	 */
+
+  for (i = 0; i < count; i++, nsent++)
+    if ((r = uv__udp_sendmsg1(fd, bufs[i], nbufs[i], addrs[i])))
+      goto exit;  /* goto to avoid unused label warning. */
+
+exit:
+
+  if (nsent > 0)
+    return nsent;
+
+  if (r < 0) {
+    r = UV__ERR(errno);
+    if (errno == EAGAIN || errno == EWOULDBLOCK || errno == ENOBUFS)
+      r = UV_EAGAIN;
+  }
+
+  return r;
+}
+
+
+static void uv__udp_sendmsg(uv_udp_t* handle) {
+  static const int N = 20;
+  struct sockaddr* addrs[N];
+  unsigned int nbufs[N];
+  uv_buf_t* bufs[N];
+  struct uv__queue* q;
+  uv_udp_send_t* req;
+  int n;
+
+  if (uv__queue_empty(&handle->write_queue))
+    return;
+
+again:
+  n = 0;
+  q = uv__queue_head(&handle->write_queue);
+  do {
+    req = uv__queue_data(q, uv_udp_send_t, queue);
+    addrs[n] = &req->u.addr;
+    nbufs[n] = req->nbufs;
+    bufs[n] = req->bufs;
+    q = uv__queue_next(q);
+    n++;
+  } while (n < N && q != &handle->write_queue);
+
+  n = uv__udp_sendmsgv(handle->io_watcher.fd, n, bufs, nbufs, addrs);
+  while (n > 0) {
+    q = uv__queue_head(&handle->write_queue);
+    req = uv__queue_data(q, uv_udp_send_t, queue);
+    req->status = uv__count_bufs(req->bufs, req->nbufs);
+    uv__queue_remove(&req->queue);
+    uv__queue_insert_tail(&handle->write_completed_queue, &req->queue);
+    n--;
+  }
+
+  if (n == 0) {
+    if (uv__queue_empty(&handle->write_queue))
+      goto feed;
+    goto again;
+  }
+
+  if (n == UV_EAGAIN)
+    return;
+
+  /* Register the error against first request in queue because that
+   * is the request that uv__udp_sendmsgv tried but failed to send,
+   * because if it did send any requests, it won't return an error.
+   */
+  q = uv__queue_head(&handle->write_queue);
+  req = uv__queue_data(q, uv_udp_send_t, queue);
+  req->status = n;
+  uv__queue_remove(&req->queue);
+  uv__queue_insert_tail(&handle->write_completed_queue, &req->queue);
+feed:
+  uv__io_feed(handle->loop, &handle->io_watcher);
+}
+
+
+int uv__udp_try_send2(uv_udp_t* handle,
+                      unsigned int count,
+                      uv_buf_t* bufs[/*count*/],
+                      unsigned int nbufs[/*count*/],
+                      struct sockaddr* addrs[/*count*/]) {
+  int fd;
+
+  fd = handle->io_watcher.fd;
+  if (fd == -1)
+    return UV_EINVAL;
+
+  return uv__udp_sendmsgv(fd, count, bufs, nbufs, addrs);
+}

src/uv-common.c

@@ -514,6 +514,25 @@ int uv_udp_try_send(uv_udp_t* handle,
 }
 
 
+int uv_udp_try_send2(uv_udp_t* handle,
+                     unsigned int count,
+                     uv_buf_t* bufs[/*count*/],
+                     unsigned int nbufs[/*count*/],
+                     struct sockaddr* addrs[/*count*/],
+                     unsigned int flags) {
+  if (count < 1)
+    return UV_EINVAL;
+
+  if (flags != 0)
+    return UV_EINVAL;
+
+  if (handle->send_queue_count > 0)
+    return UV_EAGAIN;
+
+  return uv__udp_try_send2(handle, count, bufs, nbufs, addrs);
+}
+
+
 int uv_udp_recv_start(uv_udp_t* handle,
                       uv_alloc_cb alloc_cb,
                       uv_udp_recv_cb recv_cb) {
@@ -644,6 +663,9 @@ int uv_send_buffer_size(uv_handle_t* handle, int *value) {
 int uv_fs_event_getpath(uv_fs_event_t* handle, char* buffer, size_t* size) {
   size_t required_len;
 
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
   if (!uv__is_active(handle)) {
     *size = 0;
     return UV_EINVAL;

src/uv-common.h

@@ -31,6 +31,7 @@
 #include <stdarg.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
 
 #include "uv.h"
 #include "uv/tree.h"
@@ -125,7 +126,7 @@ enum {
 
   /* Only used by uv_tty_t handles. */
   UV_HANDLE_TTY_READABLE                = 0x01000000,
-  UV_HANDLE_TTY_RAW                     = 0x02000000,
+  UV_HANDLE_UNUSED0                     = 0x02000000,
   UV_HANDLE_TTY_SAVED_POSITION          = 0x04000000,
   UV_HANDLE_TTY_SAVED_ATTRIBUTES        = 0x08000000,
 
@@ -140,6 +141,10 @@ enum {
   UV_HANDLE_REAP                        = 0x10000000
 };
 
+static inline int uv__is_raw_tty_mode(uv_tty_mode_t m) {
+  return m == UV_TTY_MODE_RAW || m == UV_TTY_MODE_RAW_VT;
+}
+
 int uv__loop_configure(uv_loop_t* loop, uv_loop_option option, va_list ap);
 
 void uv__loop_close(uv_loop_t* loop);
@@ -191,6 +196,12 @@ int uv__udp_try_send(uv_udp_t* handle,
                      const struct sockaddr* addr,
                      unsigned int addrlen);
 
+int uv__udp_try_send2(uv_udp_t* handle,
+                      unsigned int count,
+                      uv_buf_t* bufs[/*count*/],
+                      unsigned int nbufs[/*count*/],
+                      struct sockaddr* addrs[/*count*/]);
+
 int uv__udp_recv_start(uv_udp_t* handle, uv_alloc_cb alloccb,
                        uv_udp_recv_cb recv_cb);
 
@@ -428,4 +439,36 @@ struct uv__loop_internal_fields_s {
 #endif  /* __linux__ */
 };
 
+#if defined(_WIN32)
+# define UV_PTHREAD_MAX_NAMELEN_NP 32767
+#elif defined(__APPLE__)
+# define UV_PTHREAD_MAX_NAMELEN_NP 64
+#elif defined(__NetBSD__) || defined(__illumos__)
+# define UV_PTHREAD_MAX_NAMELEN_NP PTHREAD_MAX_NAMELEN_NP
+#elif defined (__linux__)
+# define UV_PTHREAD_MAX_NAMELEN_NP 16
+#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__DragonFly__)
+# define UV_PTHREAD_MAX_NAMELEN_NP (MAXCOMLEN + 1)
+#else
+# define UV_PTHREAD_MAX_NAMELEN_NP 16
+#endif
+
+/* Open-coded so downstream users don't have to link libm. */
+static inline int uv__isinf(double d) {
+  uint64_t v;
+
+  STATIC_ASSERT(sizeof(v) == sizeof(d));
+  memcpy(&v, &d, sizeof(v));
+  return (v << 1 >> 53) == 2047 && !(v << 12);
+}
+
+/* Open-coded so downstream users don't have to link libm. */
+static inline int uv__isnan(double d) {
+  uint64_t v;
+
+  STATIC_ASSERT(sizeof(v) == sizeof(d));
+  memcpy(&v, &d, sizeof(v));
+  return (v << 1 >> 53) == 2047 && !!(v << 12);
+}
+
 #endif /* UV_COMMON_H_ */

src/win/core.c

@@ -423,97 +423,6 @@ int uv_backend_timeout(const uv_loop_t* loop) {
 }
 
 
-static void uv__poll_wine(uv_loop_t* loop, DWORD timeout) {
-  uv__loop_internal_fields_t* lfields;
-  DWORD bytes;
-  ULONG_PTR key;
-  OVERLAPPED* overlapped;
-  uv_req_t* req;
-  int repeat;
-  uint64_t timeout_time;
-  uint64_t user_timeout;
-  int reset_timeout;
-
-  lfields = uv__get_internal_fields(loop);
-  timeout_time = loop->time + timeout;
-
-  if (lfields->flags & UV_METRICS_IDLE_TIME) {
-    reset_timeout = 1;
-    user_timeout = timeout;
-    timeout = 0;
-  } else {
-    reset_timeout = 0;
-  }
-
-  for (repeat = 0; ; repeat++) {
-    /* Only need to set the provider_entry_time if timeout != 0. The function
-     * will return early if the loop isn't configured with UV_METRICS_IDLE_TIME.
-     */
-    if (timeout != 0)
-      uv__metrics_set_provider_entry_time(loop);
-
-    /* Store the current timeout in a location that's globally accessible so
-     * other locations like uv__work_done() can determine whether the queue
-     * of events in the callback were waiting when poll was called.
-     */
-    lfields->current_timeout = timeout;
-
-    GetQueuedCompletionStatus(loop->iocp,
-                              &bytes,
-                              &key,
-                              &overlapped,
-                              timeout);
-
-    if (reset_timeout != 0) {
-      if (overlapped && timeout == 0)
-        uv__metrics_inc_events_waiting(loop, 1);
-      timeout = user_timeout;
-      reset_timeout = 0;
-    }
-
-    /* Placed here because on success the loop will break whether there is an
-     * empty package or not, or if GetQueuedCompletionStatus returned early then
-     * the timeout will be updated and the loop will run again. In either case
-     * the idle time will need to be updated.
-     */
-    uv__metrics_update_idle_time(loop);
-
-    if (overlapped) {
-      uv__metrics_inc_events(loop, 1);
-
-      /* Package was dequeued */
-      req = uv__overlapped_to_req(overlapped);
-      uv__insert_pending_req(loop, req);
-
-      /* Some time might have passed waiting for I/O,
-       * so update the loop time here.
-       */
-      uv_update_time(loop);
-    } else if (GetLastError() != WAIT_TIMEOUT) {
-      /* Serious error */
-      uv_fatal_error(GetLastError(), "GetQueuedCompletionStatus");
-    } else if (timeout > 0) {
-      /* GetQueuedCompletionStatus can occasionally return a little early.
-       * Make sure that the desired timeout target time is reached.
-       */
-      uv_update_time(loop);
-      if (timeout_time > loop->time) {
-        timeout = (DWORD)(timeout_time - loop->time);
-        /* The first call to GetQueuedCompletionStatus should return very
-         * close to the target time and the second should reach it, but
-         * this is not stated in the documentation. To make sure a busy
-         * loop cannot happen, the timeout is increased exponentially
-         * starting on the third round.
-         */
-        timeout += repeat ? (1 << (repeat - 1)) : 0;
-        continue;
-      }
-    }
-    break;
-  }
-}
-
-
 static void uv__poll(uv_loop_t* loop, DWORD timeout) {
   uv__loop_internal_fields_t* lfields;
   BOOL success;
@@ -553,12 +462,12 @@ static void uv__poll(uv_loop_t* loop, DWORD timeout) {
      */
     lfields->current_timeout = timeout;
 
-    success = pGetQueuedCompletionStatusEx(loop->iocp,
+    success = GetQueuedCompletionStatusEx(loop->iocp,
-                                           overlappeds,
+                                          overlappeds,
-                                           ARRAY_SIZE(overlappeds),
+                                          ARRAY_SIZE(overlappeds),
-                                           &count,
+                                          &count,
-                                           timeout,
+                                          timeout,
-                                           FALSE);
+                                          FALSE);
 
     if (reset_timeout != 0) {
       timeout = user_timeout;
@@ -566,7 +475,7 @@ static void uv__poll(uv_loop_t* loop, DWORD timeout) {
     }
 
     /* Placed here because on success the loop will break whether there is an
-     * empty package or not, or if pGetQueuedCompletionStatusEx returned early
+     * empty package or not, or if GetQueuedCompletionStatusEx returned early
      * then the timeout will be updated and the loop will run again. In either
      * case the idle time will need to be updated.
      */
@@ -647,10 +556,7 @@ int uv_run(uv_loop_t *loop, uv_run_mode mode) {
 
     uv__metrics_inc_loop_count(loop);
 
-    if (pGetQueuedCompletionStatusEx)
+    uv__poll(loop, timeout);
-      uv__poll(loop, timeout);
-    else
-      uv__poll_wine(loop, timeout);
 
     /* Process immediate callbacks (e.g. write_cb) a small fixed number of
      * times to avoid loop starvation.*/

src/win/fs-event.c

@@ -253,6 +253,8 @@ short_path_done:
     }
 
     dir_to_watch = dir;
+    uv__free(short_path);
+    short_path = NULL;
     uv__free(pathw);
     pathw = NULL;
   }
@@ -577,6 +579,8 @@ void uv__process_fs_event_req(uv_loop_t* loop, uv_req_t* req,
         info.DeletePending) {
       uv__convert_utf16_to_utf8(handle->dirw, -1, &filename);
       handle->cb(handle, filename, UV_RENAME, 0);
+      uv__free(filename);
+      filename = NULL;
     } else {
       handle->cb(handle, NULL, 0, uv_translate_sys_error(err));
     }

src/win/fs.c

@@ -58,6 +58,19 @@
 #define FILE_DISPOSITION_IGNORE_READONLY_ATTRIBUTE  0x0010
 #endif  /* FILE_DISPOSITION_IGNORE_READONLY_ATTRIBUTE */
 
+NTSTATUS uv__RtlUnicodeStringInit(
+  PUNICODE_STRING DestinationString,
+  PWSTR SourceString,
+  size_t SourceStringLen
+) {
+  if (SourceStringLen > 0x7FFF)
+    return STATUS_INVALID_PARAMETER;
+  DestinationString->MaximumLength = DestinationString->Length =
+    SourceStringLen * sizeof(SourceString[0]);
+  DestinationString->Buffer = SourceString;
+  return STATUS_SUCCESS;
+}
+
 #define INIT(subtype)                                                         \
   do {                                                                        \
     if (req == NULL)                                                          \
@@ -1689,12 +1702,12 @@ INLINE static fs__stat_path_return_t fs__stat_path(WCHAR* path,
     uv_stat_t* statbuf, int do_lstat) {
   FILE_STAT_BASIC_INFORMATION stat_info;
 
-  // Check if the new fast API is available.
+  /* Check if the new fast API is available. */
   if (!pGetFileInformationByName) {
     return FS__STAT_PATH_TRY_SLOW;
   }
 
-  // Check if the API call fails.
+  /* Check if the API call fails. */
   if (!pGetFileInformationByName(path, FileStatBasicByNameInfo, &stat_info,
       sizeof(stat_info))) {
     switch(GetLastError()) {
@@ -1708,7 +1721,7 @@ INLINE static fs__stat_path_return_t fs__stat_path(WCHAR* path,
     return FS__STAT_PATH_TRY_SLOW;
   }
 
-  // A file handle is needed to get st_size for links.
+  /* A file handle is needed to get st_size for links. */
   if ((stat_info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
     return FS__STAT_PATH_TRY_SLOW;
   }
@@ -1775,7 +1788,7 @@ INLINE static int fs__stat_handle(HANDLE handle, uv_stat_t* statbuf,
     SetLastError(pRtlNtStatusToDosError(nt_status));
     return -1;
   } else {
-    stat_info.VolumeSerialNumber.QuadPart = volume_info.VolumeSerialNumber;
+    stat_info.VolumeSerialNumber.LowPart = volume_info.VolumeSerialNumber;
   }
 
   stat_info.DeviceType = device_info.DeviceType;
@@ -1802,7 +1815,6 @@ INLINE static int fs__stat_handle(HANDLE handle, uv_stat_t* statbuf,
      * detect this failure and retry without do_lstat if appropriate.
      */
     if (fs__readlink_handle(handle, NULL, &target_length) != 0) {
-      fs__stat_assign_statbuf(statbuf, stat_info, do_lstat);
       return -1;
     }
     stat_info.EndOfFile.QuadPart = target_length;
@@ -1827,7 +1839,7 @@ INLINE static void fs__stat_assign_statbuf_null(uv_stat_t* statbuf) {
 
 INLINE static void fs__stat_assign_statbuf(uv_stat_t* statbuf,
     FILE_STAT_BASIC_INFORMATION stat_info, int do_lstat) {
-  statbuf->st_dev = stat_info.VolumeSerialNumber.QuadPart;
+  statbuf->st_dev = stat_info.VolumeSerialNumber.LowPart;
 
   /* Todo: st_mode should probably always be 0666 for everyone. We might also
    * want to report 0777 if the file is a .exe or a directory.
@@ -1941,6 +1953,179 @@ INLINE static void fs__stat_prepare_path(WCHAR* pathw) {
   }
 }
 
+INLINE static DWORD fs__stat_directory(WCHAR* path, uv_stat_t* statbuf,
+    int do_lstat, DWORD ret_error) {
+  HANDLE handle = INVALID_HANDLE_VALUE;
+  FILE_STAT_BASIC_INFORMATION stat_info;
+  FILE_ID_FULL_DIR_INFORMATION dir_info;
+  FILE_FS_VOLUME_INFORMATION volume_info;
+  FILE_FS_DEVICE_INFORMATION device_info;
+  IO_STATUS_BLOCK io_status;
+  NTSTATUS nt_status;
+  WCHAR* path_dirpath = NULL;
+  WCHAR* path_filename = NULL;
+  UNICODE_STRING FileMask;
+  size_t len;
+  size_t split;
+  WCHAR splitchar;
+  int includes_name;
+
+  /* AKA strtok or wcscspn, in reverse. */
+  len = wcslen(path);
+  split = len;
+
+  includes_name = 0;
+  while (split > 0 && path[split - 1] != L'\\' && path[split - 1] != L'/' &&
+                      path[split - 1] != L':') {
+    /* check if the path contains a character other than /,\,:,. */
+    if (path[split-1] != '.') {
+      includes_name = 1;
+    }
+    split--;
+  }
+  /* If the path is a relative path with a file name or a folder name */
+  if (split == 0 && includes_name) {
+    path_dirpath = L".";
+  /* If there is a slash or a backslash */
+  } else if (path[split - 1] == L'\\' || path[split - 1] == L'/') {
+    path_dirpath = path;
+    /* If there is no filename, consider it as a relative folder path */
+    if (!includes_name) {
+      split = len;
+    /* Else, split it */
+    } else {
+      splitchar = path[split - 1];
+      path[split - 1] = L'\0';
+    }
+  /* e.g. "..", "c:" */
+  } else {
+    path_dirpath = path;
+    split = len;
+  }
+  path_filename = &path[split];
+
+  len = 0;
+  while (1) {
+    if (path_filename[len] == L'\0')
+      break;
+    if (path_filename[len] == L'*' || path_filename[len] == L'?' ||
+        path_filename[len] == L'>' || path_filename[len] == L'<' ||
+        path_filename[len] == L'"') {
+      ret_error = ERROR_INVALID_NAME;
+      goto cleanup;
+    }
+    len++;
+  }
+
+  /* Get directory handle */
+  handle = CreateFileW(path_dirpath,
+                       FILE_LIST_DIRECTORY,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE | FILE_SHARE_DELETE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_FLAG_BACKUP_SEMANTICS,
+                       NULL);
+
+  if (handle == INVALID_HANDLE_VALUE) {
+    ret_error = GetLastError();
+    goto cleanup;
+  }
+
+  /* Get files in the directory */
+  nt_status = uv__RtlUnicodeStringInit(&FileMask, path_filename, len);
+  if (!NT_SUCCESS(nt_status)) {
+    ret_error = pRtlNtStatusToDosError(nt_status);
+    goto cleanup;
+  }
+  nt_status = pNtQueryDirectoryFile(handle,
+                                    NULL,
+                                    NULL,
+                                    NULL,
+                                    &io_status,
+                                    &dir_info,
+                                    sizeof(dir_info),
+                                    FileIdFullDirectoryInformation,
+                                    TRUE,
+                                    &FileMask,
+                                    TRUE);
+
+  /* Buffer overflow (a warning status code) is expected here since there isn't
+   * enough space to store the FileName, and actually indicates success. */
+  if (!NT_SUCCESS(nt_status) && nt_status != STATUS_BUFFER_OVERFLOW) {
+    if (nt_status == STATUS_NO_MORE_FILES)
+      ret_error = ERROR_PATH_NOT_FOUND;
+    else
+      ret_error = pRtlNtStatusToDosError(nt_status);
+    goto cleanup;
+  }
+
+  /* Assign values to stat_info */
+  memset(&stat_info, 0, sizeof(FILE_STAT_BASIC_INFORMATION));
+  stat_info.FileAttributes = dir_info.FileAttributes;
+  stat_info.CreationTime.QuadPart = dir_info.CreationTime.QuadPart;
+  stat_info.LastAccessTime.QuadPart = dir_info.LastAccessTime.QuadPart;
+  stat_info.LastWriteTime.QuadPart = dir_info.LastWriteTime.QuadPart;
+  if (stat_info.FileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) {
+    /* A file handle is needed to get st_size for the link (from
+     * FSCTL_GET_REPARSE_POINT), which is required by posix, but we are here
+     * because getting the file handle failed. We could get just the
+     * ReparsePointTag by querying FILE_ID_EXTD_DIR_INFORMATION instead to make
+     * sure this really is a link before giving up here on the uv_fs_stat call,
+     * but that doesn't seem essential. */
+    if (!do_lstat)
+      goto cleanup;
+    stat_info.EndOfFile.QuadPart = 0;
+    stat_info.AllocationSize.QuadPart = 0;
+  } else {
+    stat_info.EndOfFile.QuadPart = dir_info.EndOfFile.QuadPart;
+    stat_info.AllocationSize.QuadPart = dir_info.AllocationSize.QuadPart;
+  }
+  stat_info.ChangeTime.QuadPart = dir_info.ChangeTime.QuadPart;
+  stat_info.FileId.QuadPart = dir_info.FileId.QuadPart;
+
+  /* Finish up by getting device info from the directory handle,
+   * since files presumably must live on their device. */
+  nt_status = pNtQueryVolumeInformationFile(handle,
+                                            &io_status,
+                                            &volume_info,
+                                            sizeof volume_info,
+                                            FileFsVolumeInformation);
+
+  /* Buffer overflow (a warning status code) is expected here. */
+  if (io_status.Status == STATUS_NOT_IMPLEMENTED) {
+    stat_info.VolumeSerialNumber.QuadPart = 0;
+  } else if (NT_ERROR(nt_status)) {
+    ret_error = pRtlNtStatusToDosError(nt_status);
+    goto cleanup;
+  } else {
+    stat_info.VolumeSerialNumber.QuadPart = volume_info.VolumeSerialNumber;
+  }
+
+  nt_status = pNtQueryVolumeInformationFile(handle,
+                                            &io_status,
+                                            &device_info,
+                                            sizeof device_info,
+                                            FileFsDeviceInformation);
+
+  /* Buffer overflow (a warning status code) is expected here. */
+  if (NT_ERROR(nt_status)) {
+    ret_error = pRtlNtStatusToDosError(nt_status);
+    goto cleanup;
+  }
+
+  stat_info.DeviceType = device_info.DeviceType;
+  stat_info.NumberOfLinks = 1; /* No way to recover this info. */
+
+  fs__stat_assign_statbuf(statbuf, stat_info, do_lstat);
+  ret_error = 0;
+
+cleanup:
+  if (split != 0)
+    path[split - 1] = splitchar;
+  if (handle != INVALID_HANDLE_VALUE)
+    CloseHandle(handle);
+  return ret_error;
+}
 
 INLINE static DWORD fs__stat_impl_from_path(WCHAR* path,
                                             int do_lstat,
@@ -1949,7 +2134,7 @@ INLINE static DWORD fs__stat_impl_from_path(WCHAR* path,
   DWORD flags;
   DWORD ret;
 
-  // If new API exists, try to use it.
+  /* If new API exists, try to use it. */
   switch (fs__stat_path(path, statbuf, do_lstat)) {
     case FS__STAT_PATH_SUCCESS:
       return 0;
@@ -1959,7 +2144,7 @@ INLINE static DWORD fs__stat_impl_from_path(WCHAR* path,
       break;
   }
 
-  // If the new API does not exist, use the old API.
+  /* If the new API does not exist, use the old API. */
   flags = FILE_FLAG_BACKUP_SEMANTICS;
   if (do_lstat)
     flags |= FILE_FLAG_OPEN_REPARSE_POINT;
@@ -1972,8 +2157,12 @@ INLINE static DWORD fs__stat_impl_from_path(WCHAR* path,
                        flags,
                        NULL);
 
-  if (handle == INVALID_HANDLE_VALUE)
+  if (handle == INVALID_HANDLE_VALUE) {
-    return GetLastError();
+    ret = GetLastError();
+    if (ret != ERROR_ACCESS_DENIED && ret != ERROR_SHARING_VIOLATION)
+      return ret;
+    return fs__stat_directory(path, statbuf, do_lstat, ret);
+  }
 
   if (fs__stat_handle(handle, statbuf, do_lstat) != 0)
     ret = GetLastError();
@@ -2391,14 +2580,29 @@ fchmod_cleanup:
 
 
 INLINE static int fs__utime_handle(HANDLE handle, double atime, double mtime) {
-  FILETIME filetime_a, filetime_m;
+  FILETIME filetime_as, *filetime_a = &filetime_as;
+  FILETIME filetime_ms, *filetime_m = &filetime_ms;
+  FILETIME now;
 
-  TIME_T_TO_FILETIME(atime, &filetime_a);
+  if (uv__isinf(atime) || uv__isinf(mtime))
-  TIME_T_TO_FILETIME(mtime, &filetime_m);
+    GetSystemTimeAsFileTime(&now);
 
-  if (!SetFileTime(handle, NULL, &filetime_a, &filetime_m)) {
+  if (uv__isinf(atime))
+    filetime_a = &now;
+  else if (uv__isnan(atime))
+    filetime_a = NULL;
+  else
+    TIME_T_TO_FILETIME(atime, filetime_a);
+
+  if (uv__isinf(mtime))
+    filetime_m = &now;
+  else if (uv__isnan(mtime))
+    filetime_m = NULL;
+  else
+    TIME_T_TO_FILETIME(mtime, filetime_m);
+
+  if (!SetFileTime(handle, NULL, filetime_a, filetime_m))
     return -1;
-  }
 
   return 0;
 }

src/win/pipe.c

@@ -2602,6 +2602,9 @@ int uv_pipe_pending_count(uv_pipe_t* handle) {
 
 
 int uv_pipe_getsockname(const uv_pipe_t* handle, char* buffer, size_t* size) {
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
   if (handle->flags & UV_HANDLE_BOUND)
     return uv__pipe_getname(handle, buffer, size);
 
@@ -2616,6 +2619,9 @@ int uv_pipe_getsockname(const uv_pipe_t* handle, char* buffer, size_t* size) {
 
 
 int uv_pipe_getpeername(const uv_pipe_t* handle, char* buffer, size_t* size) {
+  if (buffer == NULL || size == NULL || *size == 0)
+    return UV_EINVAL;
+
   /* emulate unix behaviour */
   if (handle->flags & UV_HANDLE_BOUND)
     return UV_ENOTCONN;

src/win/process.c

@@ -898,7 +898,7 @@ int uv_spawn(uv_loop_t* loop,
          *env = NULL, *cwd = NULL;
   STARTUPINFOW startup;
   PROCESS_INFORMATION info;
-  DWORD process_flags;
+  DWORD process_flags, cwd_len;
   BYTE* child_stdio_buffer;
 
   uv__process_init(loop, process);
@@ -947,9 +947,10 @@ int uv_spawn(uv_loop_t* loop,
     if (err)
       goto done_uv;
 
+    cwd_len = wcslen(cwd);
   } else {
     /* Inherit cwd */
-    DWORD cwd_len, r;
+    DWORD r;
 
     cwd_len = GetCurrentDirectoryW(0, NULL);
     if (!cwd_len) {
@@ -970,6 +971,15 @@ int uv_spawn(uv_loop_t* loop,
     }
   }
 
+  /* If cwd is too long, shorten it */
+  if (cwd_len >= MAX_PATH) {
+    cwd_len = GetShortPathNameW(cwd, cwd, cwd_len);
+    if (cwd_len == 0) {
+      err = GetLastError();
+      goto done;
+    }
+  }
+
   /* Get PATH environment variable. */
   path = find_path(env);
   if (path == NULL) {

src/win/thread.c

@@ -57,6 +57,9 @@ STATIC_ASSERT(sizeof(uv_thread_t) <= sizeof(void*));
 
 static uv_key_t uv__current_thread_key;
 static uv_once_t uv__current_thread_init_guard = UV_ONCE_INIT;
+static uv_once_t uv__thread_name_once = UV_ONCE_INIT;
+HRESULT (WINAPI *pGetThreadDescription)(HANDLE, PWSTR*);
+HRESULT (WINAPI *pSetThreadDescription)(HANDLE, PCWSTR);
 
 
 static void uv__init_current_thread_key(void) {
@@ -95,6 +98,15 @@ int uv_thread_create(uv_thread_t *tid, void (*entry)(void *arg), void *arg) {
   return uv_thread_create_ex(tid, &params, entry, arg);
 }
 
+
+int uv_thread_detach(uv_thread_t *tid) {
+  if (CloseHandle(*tid) == 0)
+    return uv_translate_sys_error(GetLastError());
+
+  return 0;
+}
+
+
 int uv_thread_create_ex(uv_thread_t* tid,
                         const uv_thread_options_t* params,
                         void (*entry)(void *arg),
@@ -269,6 +281,92 @@ int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2) {
 }
 
 
+static void uv__thread_name_init_once(void) {
+  HMODULE m;
+
+  m = GetModuleHandleA("api-ms-win-core-processthreads-l1-1-3.dll");
+  if (m != NULL) {
+    pGetThreadDescription = (void*) GetProcAddress(m, "GetThreadDescription");
+    pSetThreadDescription = (void*) GetProcAddress(m, "SetThreadDescription");
+  }
+}
+
+
+int uv_thread_setname(const char* name) {
+  HRESULT hr;
+  WCHAR* namew;
+  int err;
+  char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
+
+  uv_once(&uv__thread_name_once, uv__thread_name_init_once);
+
+  if (pSetThreadDescription == NULL)
+    return UV_ENOSYS;
+
+  if (name == NULL)
+    return UV_EINVAL;
+
+  strncpy(namebuf, name, sizeof(namebuf) - 1);
+  namebuf[sizeof(namebuf) - 1] = '\0';
+
+  namew = NULL;
+  err = uv__convert_utf8_to_utf16(namebuf, &namew);
+  if (err)
+    return err;
+
+  hr = pSetThreadDescription(GetCurrentThread(), namew);
+  uv__free(namew);
+  if (FAILED(hr))
+    return uv_translate_sys_error(HRESULT_CODE(hr));
+
+  return 0;
+}
+
+
+int uv_thread_getname(uv_thread_t* tid, char* name, size_t size) {
+  HRESULT hr;
+  WCHAR* namew;
+  char* thread_name;
+  size_t buf_size;
+  int r;
+  DWORD exit_code;
+
+  uv_once(&uv__thread_name_once, uv__thread_name_init_once);
+
+  if (pGetThreadDescription == NULL)
+    return UV_ENOSYS;
+
+  if (name == NULL || size == 0)
+    return UV_EINVAL;
+
+  if (tid == NULL || *tid == NULL)
+    return UV_EINVAL;
+
+  /* Check if the thread handle is valid */
+  if (!GetExitCodeThread(*tid, &exit_code) || exit_code != STILL_ACTIVE)
+    return UV_ENOENT;
+
+  namew = NULL;
+  thread_name = NULL;
+  hr = pGetThreadDescription(*tid, &namew);
+  if (FAILED(hr))
+    return uv_translate_sys_error(HRESULT_CODE(hr));
+
+  buf_size = size;
+  r = uv__copy_utf16_to_utf8(namew, -1, name, &buf_size);
+  if (r == UV_ENOBUFS) {
+    r = uv__convert_utf16_to_utf8(namew, wcslen(namew), &thread_name);
+    if (r == 0) {
+      uv__strscpy(name, thread_name, size);
+      uv__free(thread_name);
+    }
+  }
+
+  LocalFree(namew);
+  return r;
+}
+
+
 int uv_mutex_init(uv_mutex_t* mutex) {
   InitializeCriticalSection(mutex);
   return 0;

src/win/tty.c

@@ -58,6 +58,9 @@
 #ifndef ENABLE_VIRTUAL_TERMINAL_PROCESSING
 #define ENABLE_VIRTUAL_TERMINAL_PROCESSING 0x0004
 #endif
+#ifndef ENABLE_VIRTUAL_TERMINAL_INPUT
+#define ENABLE_VIRTUAL_TERMINAL_INPUT 0x0200
+#endif
 
 #define CURSOR_SIZE_SMALL     25
 #define CURSOR_SIZE_LARGE     100
@@ -119,7 +122,10 @@ static int uv_tty_virtual_width = -1;
  * handle signalling SIGWINCH
  */
 
-static HANDLE uv__tty_console_handle = INVALID_HANDLE_VALUE;
+static HANDLE uv__tty_console_handle_out = INVALID_HANDLE_VALUE;
+static HANDLE uv__tty_console_handle_in = INVALID_HANDLE_VALUE;
+static DWORD uv__tty_console_in_original_mode = (DWORD)-1;
+static volatile LONG uv__tty_console_in_need_mode_reset = 0;
 static int uv__tty_console_height = -1;
 static int uv__tty_console_width = -1;
 static HANDLE uv__tty_console_resized = INVALID_HANDLE_VALUE;
@@ -159,19 +165,21 @@ static uv_tty_vtermstate_t uv__vterm_state = UV_TTY_UNSUPPORTED;
 static void uv__determine_vterm_state(HANDLE handle);
 
 void uv__console_init(void) {
+  DWORD dwMode;
+
   if (uv_sem_init(&uv_tty_output_lock, 1))
     abort();
-  uv__tty_console_handle = CreateFileW(L"CONOUT$",
+  uv__tty_console_handle_out = CreateFileW(L"CONOUT$",
-                                       GENERIC_READ | GENERIC_WRITE,
+                                           GENERIC_READ | GENERIC_WRITE,
-                                       FILE_SHARE_WRITE,
+                                           FILE_SHARE_WRITE,
-                                       0,
+                                           0,
-                                       OPEN_EXISTING,
+                                           OPEN_EXISTING,
-                                       0,
+                                           0,
-                                       0);
+                                           0);
-  if (uv__tty_console_handle != INVALID_HANDLE_VALUE) {
+  if (uv__tty_console_handle_out != INVALID_HANDLE_VALUE) {
     CONSOLE_SCREEN_BUFFER_INFO sb_info;
     uv_mutex_init(&uv__tty_console_resize_mutex);
-    if (GetConsoleScreenBufferInfo(uv__tty_console_handle, &sb_info)) {
+    if (GetConsoleScreenBufferInfo(uv__tty_console_handle_out, &sb_info)) {
       uv__tty_console_width = sb_info.dwSize.X;
       uv__tty_console_height = sb_info.srWindow.Bottom - sb_info.srWindow.Top + 1;
     }
@@ -179,6 +187,18 @@ void uv__console_init(void) {
                       NULL,
                       WT_EXECUTELONGFUNCTION);
   }
+  uv__tty_console_handle_in = CreateFileW(L"CONIN$",
+                                          GENERIC_READ | GENERIC_WRITE,
+                                          FILE_SHARE_READ,
+                                          0,
+                                          OPEN_EXISTING,
+                                          0,
+                                          0);
+  if (uv__tty_console_handle_in != INVALID_HANDLE_VALUE) {
+    if (GetConsoleMode(uv__tty_console_handle_in, &dwMode)) {
+      uv__tty_console_in_original_mode = dwMode;
+    }
+  }
 }
 
 
@@ -253,7 +273,9 @@ int uv_tty_init(uv_loop_t* loop, uv_tty_t* tty, uv_file fd, int unused) {
     /* Initialize TTY input specific fields. */
     tty->flags |= UV_HANDLE_TTY_READABLE | UV_HANDLE_READABLE;
     /* TODO: remove me in v2.x. */
-    tty->tty.rd.unused_ = NULL;
+    tty->tty.rd.mode.unused_ = NULL;
+    /* Partially overwrites unused_ again. */
+    tty->tty.rd.mode.mode = 0;
     tty->tty.rd.read_line_buffer = uv_null_buf_;
     tty->tty.rd.read_raw_wait = NULL;
 
@@ -344,6 +366,7 @@ static void uv__tty_capture_initial_style(
 
 int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
   DWORD flags;
+  DWORD try_set_flags;
   unsigned char was_reading;
   uv_alloc_cb alloc_cb;
   uv_read_cb read_cb;
@@ -353,14 +376,19 @@ int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
     return UV_EINVAL;
   }
 
-  if (!!mode == !!(tty->flags & UV_HANDLE_TTY_RAW)) {
+  if ((int)mode == tty->tty.rd.mode.mode) {
     return 0;
   }
 
+  try_set_flags = 0;
   switch (mode) {
     case UV_TTY_MODE_NORMAL:
       flags = ENABLE_ECHO_INPUT | ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT;
       break;
+    case UV_TTY_MODE_RAW_VT:
+      try_set_flags = ENABLE_VIRTUAL_TERMINAL_INPUT;
+      InterlockedExchange(&uv__tty_console_in_need_mode_reset, 1);
+      /* fallthrough */
     case UV_TTY_MODE_RAW:
       flags = ENABLE_WINDOW_INPUT;
       break;
@@ -386,16 +414,16 @@ int uv_tty_set_mode(uv_tty_t* tty, uv_tty_mode_t mode) {
   }
 
   uv_sem_wait(&uv_tty_output_lock);
-  if (!SetConsoleMode(tty->handle, flags)) {
+  if (!SetConsoleMode(tty->handle, flags | try_set_flags) &&
+      !SetConsoleMode(tty->handle, flags)) {
     err = uv_translate_sys_error(GetLastError());
     uv_sem_post(&uv_tty_output_lock);
     return err;
   }
   uv_sem_post(&uv_tty_output_lock);
 
-  /* Update flag. */
+  /* Update mode. */
-  tty->flags &= ~UV_HANDLE_TTY_RAW;
+  tty->tty.rd.mode.mode = mode;
-  tty->flags |= mode ? UV_HANDLE_TTY_RAW : 0;
 
   /* If we just stopped reading, restart. */
   if (was_reading) {
@@ -614,7 +642,7 @@ static void uv__tty_queue_read_line(uv_loop_t* loop, uv_tty_t* handle) {
 
 
 static void uv__tty_queue_read(uv_loop_t* loop, uv_tty_t* handle) {
-  if (handle->flags & UV_HANDLE_TTY_RAW) {
+  if (uv__is_raw_tty_mode(handle->tty.rd.mode.mode)) {
     uv__tty_queue_read_raw(loop, handle);
   } else {
     uv__tty_queue_read_line(loop, handle);
@@ -702,7 +730,7 @@ void uv_process_tty_read_raw_req(uv_loop_t* loop, uv_tty_t* handle,
   handle->flags &= ~UV_HANDLE_READ_PENDING;
 
   if (!(handle->flags & UV_HANDLE_READING) ||
-      !(handle->flags & UV_HANDLE_TTY_RAW)) {
+      !(uv__is_raw_tty_mode(handle->tty.rd.mode.mode))) {
     goto out;
   }
 
@@ -1050,7 +1078,7 @@ int uv__tty_read_stop(uv_tty_t* handle) {
   if (!(handle->flags & UV_HANDLE_READ_PENDING))
     return 0;
 
-  if (handle->flags & UV_HANDLE_TTY_RAW) {
+  if (uv__is_raw_tty_mode(handle->tty.rd.mode.mode)) {
     /* Cancel raw read. Write some bullshit event to force the console wait to
      * return. */
     memset(&record, 0, sizeof record);
@@ -2293,7 +2321,17 @@ void uv__tty_endgame(uv_loop_t* loop, uv_tty_t* handle) {
 
 
 int uv_tty_reset_mode(void) {
-  /* Not necessary to do anything. */
+  /**
+   * Shells on Windows do know to reset output flags after a program exits,
+   * but not necessarily input flags, so we do that for them.
+   */
+  if (
+    uv__tty_console_handle_in != INVALID_HANDLE_VALUE &&
+    uv__tty_console_in_original_mode != (DWORD)-1 &&
+    InterlockedExchange(&uv__tty_console_in_need_mode_reset, 0) != 0
+  ) {
+    SetConsoleMode(uv__tty_console_handle_in, uv__tty_console_in_original_mode);
+  }
   return 0;
 }
 
@@ -2390,7 +2428,7 @@ static void uv__tty_console_signal_resize(void) {
   CONSOLE_SCREEN_BUFFER_INFO sb_info;
   int width, height;
 
-  if (!GetConsoleScreenBufferInfo(uv__tty_console_handle, &sb_info))
+  if (!GetConsoleScreenBufferInfo(uv__tty_console_handle_out, &sb_info))
     return;
 
   width = sb_info.dwSize.X;

src/win/udp.c

@@ -1101,7 +1101,8 @@ int uv__udp_try_send(uv_udp_t* handle,
   struct sockaddr_storage converted;
   int err;
 
-  assert(nbufs > 0);
+  if (nbufs < 1)
+    return UV_EINVAL;
 
   if (addr != NULL) {
     err = uv__convert_to_localhost_if_unspecified(addr, &converted);
@@ -1141,3 +1142,21 @@ int uv__udp_try_send(uv_udp_t* handle,
 
   return bytes;
 }
+
+
+int uv__udp_try_send2(uv_udp_t* handle,
+                      unsigned int count,
+                      uv_buf_t* bufs[/*count*/],
+                      unsigned int nbufs[/*count*/],
+                      struct sockaddr* addrs[/*count*/]) {
+  unsigned int i;
+  int r;
+
+  for (i = 0; i < count; i++) {
+    r = uv_udp_try_send(handle, bufs[i], nbufs[i], addrs[i]);
+    if (r < 0)
+      return i > 0 ? i : r;  /* Error if first packet, else send count. */
+  }
+
+  return i;
+}

src/win/util.c

@@ -191,7 +191,7 @@ int uv_cwd(char* buffer, size_t* size) {
   WCHAR *utf16_buffer;
   int r;
 
-  if (buffer == NULL || size == NULL) {
+  if (buffer == NULL || size == NULL || *size == 0) {
     return UV_EINVAL;
   }
 
@@ -874,56 +874,100 @@ void uv_free_interface_addresses(uv_interface_address_t* addresses,
 
 
 int uv_getrusage(uv_rusage_t *uv_rusage) {
-  FILETIME createTime, exitTime, kernelTime, userTime;
+  FILETIME create_time, exit_time, kernel_time, user_time;
-  SYSTEMTIME kernelSystemTime, userSystemTime;
+  SYSTEMTIME kernel_system_time, user_system_time;
-  PROCESS_MEMORY_COUNTERS memCounters;
+  PROCESS_MEMORY_COUNTERS mem_counters;
-  IO_COUNTERS ioCounters;
+  IO_COUNTERS io_counters;
   int ret;
 
-  ret = GetProcessTimes(GetCurrentProcess(), &createTime, &exitTime, &kernelTime, &userTime);
+  ret = GetProcessTimes(GetCurrentProcess(),
+                        &create_time,
+                        &exit_time,
+                        &kernel_time,
+                        &user_time);
   if (ret == 0) {
     return uv_translate_sys_error(GetLastError());
   }
 
-  ret = FileTimeToSystemTime(&kernelTime, &kernelSystemTime);
+  ret = FileTimeToSystemTime(&kernel_time, &kernel_system_time);
   if (ret == 0) {
     return uv_translate_sys_error(GetLastError());
   }
 
-  ret = FileTimeToSystemTime(&userTime, &userSystemTime);
+  ret = FileTimeToSystemTime(&user_time, &user_system_time);
   if (ret == 0) {
     return uv_translate_sys_error(GetLastError());
   }
 
   ret = GetProcessMemoryInfo(GetCurrentProcess(),
-                             &memCounters,
+                             &mem_counters,
-                             sizeof(memCounters));
+                             sizeof(mem_counters));
   if (ret == 0) {
     return uv_translate_sys_error(GetLastError());
   }
 
-  ret = GetProcessIoCounters(GetCurrentProcess(), &ioCounters);
+  ret = GetProcessIoCounters(GetCurrentProcess(), &io_counters);
   if (ret == 0) {
     return uv_translate_sys_error(GetLastError());
   }
 
   memset(uv_rusage, 0, sizeof(*uv_rusage));
 
-  uv_rusage->ru_utime.tv_sec = userSystemTime.wHour * 3600 +
+  uv_rusage->ru_utime.tv_sec = user_system_time.wHour * 3600 +
-                               userSystemTime.wMinute * 60 +
+                               user_system_time.wMinute * 60 +
-                               userSystemTime.wSecond;
+                               user_system_time.wSecond;
-  uv_rusage->ru_utime.tv_usec = userSystemTime.wMilliseconds * 1000;
+  uv_rusage->ru_utime.tv_usec = user_system_time.wMilliseconds * 1000;
 
-  uv_rusage->ru_stime.tv_sec = kernelSystemTime.wHour * 3600 +
+  uv_rusage->ru_stime.tv_sec = kernel_system_time.wHour * 3600 +
-                               kernelSystemTime.wMinute * 60 +
+                               kernel_system_time.wMinute * 60 +
-                               kernelSystemTime.wSecond;
+                               kernel_system_time.wSecond;
-  uv_rusage->ru_stime.tv_usec = kernelSystemTime.wMilliseconds * 1000;
+  uv_rusage->ru_stime.tv_usec = kernel_system_time.wMilliseconds * 1000;
 
-  uv_rusage->ru_majflt = (uint64_t) memCounters.PageFaultCount;
+  uv_rusage->ru_majflt = (uint64_t) mem_counters.PageFaultCount;
-  uv_rusage->ru_maxrss = (uint64_t) memCounters.PeakWorkingSetSize / 1024;
+  uv_rusage->ru_maxrss = (uint64_t) mem_counters.PeakWorkingSetSize / 1024;
 
-  uv_rusage->ru_oublock = (uint64_t) ioCounters.WriteOperationCount;
+  uv_rusage->ru_oublock = (uint64_t) io_counters.WriteOperationCount;
-  uv_rusage->ru_inblock = (uint64_t) ioCounters.ReadOperationCount;
+  uv_rusage->ru_inblock = (uint64_t) io_counters.ReadOperationCount;
+
+  return 0;
+}
+
+
+int uv_getrusage_thread(uv_rusage_t* uv_rusage) {
+  FILETIME create_time, exit_time, kernel_time, user_time;
+  SYSTEMTIME kernel_system_time, user_system_time;
+  int ret;
+
+  ret = GetThreadTimes(GetCurrentThread(),
+                       &create_time,
+                       &exit_time,
+                       &kernel_time,
+                       &user_time);
+  if (ret == 0) {
+    return uv_translate_sys_error(GetLastError());
+  }
+
+  ret = FileTimeToSystemTime(&kernel_time, &kernel_system_time);
+  if (ret == 0) {
+    return uv_translate_sys_error(GetLastError());
+  }
+
+  ret = FileTimeToSystemTime(&user_time, &user_system_time);
+  if (ret == 0) {
+    return uv_translate_sys_error(GetLastError());
+  }
+
+  memset(uv_rusage, 0, sizeof(*uv_rusage));
+
+  uv_rusage->ru_utime.tv_sec = user_system_time.wHour * 3600 +
+                               user_system_time.wMinute * 60 +
+                               user_system_time.wSecond;
+  uv_rusage->ru_utime.tv_usec = user_system_time.wMilliseconds * 1000;
+
+  uv_rusage->ru_stime.tv_sec = kernel_system_time.wHour * 3600 +
+                               kernel_system_time.wMinute * 60 +
+                               kernel_system_time.wSecond;
+  uv_rusage->ru_stime.tv_usec = kernel_system_time.wMilliseconds * 1000;
 
   return 0;
 }
@@ -972,6 +1016,7 @@ int uv_os_homedir(char* buffer, size_t* size) {
 
 
 int uv_os_tmpdir(char* buffer, size_t* size) {
+  int r;
   wchar_t *path;
   size_t len;
 
@@ -1010,7 +1055,9 @@ int uv_os_tmpdir(char* buffer, size_t* size) {
     path[len] = L'\0';
   }
 
-  return uv__copy_utf16_to_utf8(path, len, buffer, size);
+  r = uv__copy_utf16_to_utf8(path, len, buffer, size);
+  uv__free(path);
+  return r;
 }
 
 

src/win/winapi.c

@@ -36,9 +36,6 @@ sNtQueryDirectoryFile pNtQueryDirectoryFile;
 sNtQuerySystemInformation pNtQuerySystemInformation;
 sNtQueryInformationProcess pNtQueryInformationProcess;
 
-/* Kernel32 function pointers */
-sGetQueuedCompletionStatusEx pGetQueuedCompletionStatusEx;
-
 /* Powrprof.dll function pointer */
 sPowerRegisterSuspendResumeNotification pPowerRegisterSuspendResumeNotification;
 
@@ -55,7 +52,6 @@ void uv__winapi_init(void) {
   HMODULE ntdll_module;
   HMODULE powrprof_module;
   HMODULE user32_module;
-  HMODULE kernel32_module;
   HMODULE ws2_32_module;
   HMODULE api_win_core_file_module;
 
@@ -121,15 +117,6 @@ void uv__winapi_init(void) {
     uv_fatal_error(GetLastError(), "GetProcAddress");
   }
 
-  kernel32_module = GetModuleHandleA("kernel32.dll");
-  if (kernel32_module == NULL) {
-    uv_fatal_error(GetLastError(), "GetModuleHandleA");
-  }
-
-  pGetQueuedCompletionStatusEx = (sGetQueuedCompletionStatusEx) GetProcAddress(
-      kernel32_module,
-      "GetQueuedCompletionStatusEx");
-
   powrprof_module = LoadLibraryExA("powrprof.dll", NULL, LOAD_LIBRARY_SEARCH_SYSTEM32);
   if (powrprof_module != NULL) {
     pPowerRegisterSuspendResumeNotification = (sPowerRegisterSuspendResumeNotification)

src/win/winapi.h

@@ -4145,45 +4145,40 @@ typedef struct _FILE_STAT_BASIC_INFORMATION {
   ULONG DeviceType;
   ULONG DeviceCharacteristics;
   ULONG Reserved;
-  FILE_ID_128 FileId128;
   LARGE_INTEGER VolumeSerialNumber;
+  FILE_ID_128 FileId128;
 } FILE_STAT_BASIC_INFORMATION;
 #endif
 
-/* MinGW already has a definition for REPARSE_DATA_BUFFER, but mingw-w64 does
+typedef struct _REPARSE_DATA_BUFFER {
- * not.
+  ULONG  ReparseTag;
- */
+  USHORT ReparseDataLength;
-#if defined(_MSC_VER) || defined(__MINGW64_VERSION_MAJOR)
+  USHORT Reserved;
-  typedef struct _REPARSE_DATA_BUFFER {
+  union {
-    ULONG  ReparseTag;
+    struct {
-    USHORT ReparseDataLength;
+      USHORT SubstituteNameOffset;
-    USHORT Reserved;
+      USHORT SubstituteNameLength;
-    union {
+      USHORT PrintNameOffset;
-      struct {
+      USHORT PrintNameLength;
-        USHORT SubstituteNameOffset;
+      ULONG Flags;
-        USHORT SubstituteNameLength;
+      WCHAR PathBuffer[1];
-        USHORT PrintNameOffset;
+    } SymbolicLinkReparseBuffer;
-        USHORT PrintNameLength;
+    struct {
-        ULONG Flags;
+      USHORT SubstituteNameOffset;
-        WCHAR PathBuffer[1];
+      USHORT SubstituteNameLength;
-      } SymbolicLinkReparseBuffer;
+      USHORT PrintNameOffset;
-      struct {
+      USHORT PrintNameLength;
-        USHORT SubstituteNameOffset;
+      WCHAR PathBuffer[1];
-        USHORT SubstituteNameLength;
+    } MountPointReparseBuffer;
-        USHORT PrintNameOffset;
+    struct {
-        USHORT PrintNameLength;
+      UCHAR  DataBuffer[1];
-        WCHAR PathBuffer[1];
+    } GenericReparseBuffer;
-      } MountPointReparseBuffer;
+    struct {
-      struct {
+      ULONG StringCount;
-        UCHAR  DataBuffer[1];
+      WCHAR StringList[1];
-      } GenericReparseBuffer;
+    } AppExecLinkReparseBuffer;
-      struct {
+  };
-        ULONG StringCount;
+} REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
-        WCHAR StringList[1];
-      } AppExecLinkReparseBuffer;
-    };
-  } REPARSE_DATA_BUFFER, *PREPARSE_DATA_BUFFER;
-#endif
 
 typedef struct _IO_STATUS_BLOCK {
   union {
@@ -4292,6 +4287,22 @@ typedef struct _FILE_BOTH_DIR_INFORMATION {
   WCHAR FileName[1];
 } FILE_BOTH_DIR_INFORMATION, *PFILE_BOTH_DIR_INFORMATION;
 
+typedef struct _FILE_ID_FULL_DIR_INFORMATION {
+  ULONG         NextEntryOffset;
+  ULONG         FileIndex;
+  LARGE_INTEGER CreationTime;
+  LARGE_INTEGER LastAccessTime;
+  LARGE_INTEGER LastWriteTime;
+  LARGE_INTEGER ChangeTime;
+  LARGE_INTEGER EndOfFile;
+  LARGE_INTEGER AllocationSize;
+  ULONG         FileAttributes;
+  ULONG         FileNameLength;
+  ULONG         EaSize;
+  LARGE_INTEGER FileId;
+  WCHAR         FileName[1];
+} FILE_ID_FULL_DIR_INFORMATION, *PFILE_ID_FULL_DIR_INFORMATION;
+
 typedef struct _FILE_BASIC_INFORMATION {
   LARGE_INTEGER CreationTime;
   LARGE_INTEGER LastAccessTime;
@@ -4661,15 +4672,6 @@ typedef NTSTATUS (NTAPI *sNtQueryInformationProcess)
 # define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
 #endif
 
-#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
-  typedef struct _OVERLAPPED_ENTRY {
-      ULONG_PTR lpCompletionKey;
-      LPOVERLAPPED lpOverlapped;
-      ULONG_PTR Internal;
-      DWORD dwNumberOfBytesTransferred;
-  } OVERLAPPED_ENTRY, *LPOVERLAPPED_ENTRY;
-#endif
-
 /* from wincon.h */
 #ifndef ENABLE_INSERT_MODE
 # define ENABLE_INSERT_MODE 0x20
@@ -4716,14 +4718,6 @@ typedef NTSTATUS (NTAPI *sNtQueryInformationProcess)
 # define ERROR_MUI_FILE_NOT_LOADED 15105
 #endif
 
-typedef BOOL (WINAPI *sGetQueuedCompletionStatusEx)
-             (HANDLE CompletionPort,
-              LPOVERLAPPED_ENTRY lpCompletionPortEntries,
-              ULONG ulCount,
-              PULONG ulNumEntriesRemoved,
-              DWORD dwMilliseconds,
-              BOOL fAlertable);
-
 /* from powerbase.h */
 #ifndef DEVICE_NOTIFY_CALLBACK
 # define DEVICE_NOTIFY_CALLBACK 2
@@ -4818,9 +4812,6 @@ extern sNtQueryDirectoryFile pNtQueryDirectoryFile;
 extern sNtQuerySystemInformation pNtQuerySystemInformation;
 extern sNtQueryInformationProcess pNtQueryInformationProcess;
 
-/* Kernel32 function pointers */
-extern sGetQueuedCompletionStatusEx pGetQueuedCompletionStatusEx;
-
 /* Powrprof.dll function pointer */
 extern sPowerRegisterSuspendResumeNotification pPowerRegisterSuspendResumeNotification;
 

src/win/winsock.h

@@ -154,47 +154,6 @@ typedef struct _AFD_RECV_INFO {
 #define IOCTL_AFD_POLL \
     _AFD_CONTROL_CODE(AFD_POLL, METHOD_BUFFERED)
 
-#if defined(__MINGW32__) && !defined(__MINGW64_VERSION_MAJOR)
-typedef struct _IP_ADAPTER_UNICAST_ADDRESS_XP {
-  /* FIXME: __C89_NAMELESS was removed */
-  /* __C89_NAMELESS */ union {
-    ULONGLONG Alignment;
-    /* __C89_NAMELESS */ struct {
-      ULONG Length;
-      DWORD Flags;
-    };
-  };
-  struct _IP_ADAPTER_UNICAST_ADDRESS_XP *Next;
-  SOCKET_ADDRESS Address;
-  IP_PREFIX_ORIGIN PrefixOrigin;
-  IP_SUFFIX_ORIGIN SuffixOrigin;
-  IP_DAD_STATE DadState;
-  ULONG ValidLifetime;
-  ULONG PreferredLifetime;
-  ULONG LeaseLifetime;
-} IP_ADAPTER_UNICAST_ADDRESS_XP,*PIP_ADAPTER_UNICAST_ADDRESS_XP;
-
-typedef struct _IP_ADAPTER_UNICAST_ADDRESS_LH {
-  union {
-    ULONGLONG Alignment;
-    struct {
-      ULONG Length;
-      DWORD Flags;
-    };
-  };
-  struct _IP_ADAPTER_UNICAST_ADDRESS_LH *Next;
-  SOCKET_ADDRESS Address;
-  IP_PREFIX_ORIGIN PrefixOrigin;
-  IP_SUFFIX_ORIGIN SuffixOrigin;
-  IP_DAD_STATE DadState;
-  ULONG ValidLifetime;
-  ULONG PreferredLifetime;
-  ULONG LeaseLifetime;
-  UINT8 OnLinkPrefixLength;
-} IP_ADAPTER_UNICAST_ADDRESS_LH,*PIP_ADAPTER_UNICAST_ADDRESS_LH;
-
-#endif
-
 int uv__convert_to_localhost_if_unspecified(const struct sockaddr* addr,
                                             struct sockaddr_storage* storage);
 

test/runner.c

@@ -27,6 +27,11 @@
 #include "task.h"
 #include "uv.h"
 
+/* Refs: https://github.com/libuv/libuv/issues/4369 */
+#if defined(__ANDROID__)
+#include <android/fdsan.h>
+#endif
+
 char executable_path[sizeof(executable_path)];
 
 
@@ -142,6 +147,13 @@ void log_tap_result(int test_count,
   fflush(stdout);
 }
 
+void enable_fdsan(void) {
+/* Refs: https://github.com/libuv/libuv/issues/4369 */
+#if defined(__ANDROID__)
+  android_fdsan_set_error_level(ANDROID_FDSAN_ERROR_LEVEL_WARN_ALWAYS);
+#endif
+}
+
 
 int run_test(const char* test,
              int benchmark_output,
@@ -160,6 +172,8 @@ int run_test(const char* test,
   main_proc = NULL;
   process_count = 0;
 
+  enable_fdsan();
+
 #ifndef _WIN32
   /* Clean up stale socket from previous run. */
   remove(TEST_PIPENAME);

test/test-fs-event.c

@@ -153,7 +153,14 @@ static void fs_event_cb_del_dir(uv_fs_event_t* handle,
   ASSERT_PTR_EQ(handle, &fs_event);
   ASSERT_OK(status);
   ASSERT(events == UV_CHANGE || events == UV_RENAME);
+  /* There is a bug in the FreeBSD kernel where the filename is sometimes NULL.
+   * Refs: https://github.com/libuv/libuv/issues/4606
+   */
+  #if defined(__FreeBSD__)
+  ASSERT(filename == NULL || strcmp(filename, "watch_del_dir") == 0);
+  #else
   ASSERT_OK(strcmp(filename, "watch_del_dir"));
+  #endif
   ASSERT_OK(uv_fs_event_stop(handle));
   uv_close((uv_handle_t*)handle, close_cb);
 }
@@ -1121,7 +1128,7 @@ TEST_IMPL(fs_event_getpath) {
     ASSERT_EQ(r, UV_EINVAL);
     r = uv_fs_event_start(&fs_event, fail_cb, watch_dir[i], 0);
     ASSERT_OK(r);
-    len = 0;
+    len = 1;
     r = uv_fs_event_getpath(&fs_event, buf, &len);
     ASSERT_EQ(r, UV_ENOBUFS);
     ASSERT_LT(len, sizeof buf); /* sanity check */

test/test-fs.c

@@ -59,6 +59,18 @@
 #define TOO_LONG_NAME_LENGTH 65536
 #define PATHMAX 4096
 
+#ifdef _WIN32
+static const int is_win32 = 1;
+#else
+static const int is_win32 = 0;
+#endif
+
+#if defined(__APPLE__) || defined(__SUNPRO_C)
+static const int is_apple_or_sunpro_c = 1;
+#else
+static const int is_apple_or_sunpro_c = 0;
+#endif
+
 typedef struct {
   const char* path;
   double atime;
@@ -827,43 +839,70 @@ static void check_utime(const char* path,
   ASSERT_OK(req.result);
   s = &req.statbuf;
 
-  if (s->st_atim.tv_nsec == 0 && s->st_mtim.tv_nsec == 0) {
+  if (isfinite(atime)) {
-    /*
+    /* Test sub-second timestamps only when supported (such as Windows with
-     * Test sub-second timestamps only when supported (such as Windows with
      * NTFS). Some other platforms support sub-second timestamps, but that
      * support is filesystem-dependent. Notably OS X (HFS Plus) does NOT
      * support sub-second timestamps. But kernels may round or truncate in
      * either direction, so we may accept either possible answer.
      */
-#ifdef _WIN32
+    if (s->st_atim.tv_nsec == 0) {
-    ASSERT_DOUBLE_EQ(atime, (long) atime);
+      if (is_win32)
-    ASSERT_DOUBLE_EQ(mtime, (long) atime);
+        ASSERT_DOUBLE_EQ(atime, (long) atime);
-#endif
+      if (atime > 0 || (long) atime == atime)
-    if (atime > 0 || (long) atime == atime)
+        ASSERT_EQ(s->st_atim.tv_sec, (long) atime);
-      ASSERT_EQ(s->st_atim.tv_sec, (long) atime);
+      ASSERT_GE(s->st_atim.tv_sec, (long) atime - 1);
-    if (mtime > 0 || (long) mtime == mtime)
+      ASSERT_LE(s->st_atim.tv_sec, (long) atime);
-      ASSERT_EQ(s->st_mtim.tv_sec, (long) mtime);
+    } else {
-    ASSERT_GE(s->st_atim.tv_sec, (long) atime - 1);
+      double st_atim;
-    ASSERT_GE(s->st_mtim.tv_sec, (long) mtime - 1);
+      /* TODO(vtjnash): would it be better to normalize this? */
-    ASSERT_LE(s->st_atim.tv_sec, (long) atime);
+      if (!is_apple_or_sunpro_c)
-    ASSERT_LE(s->st_mtim.tv_sec, (long) mtime);
+        ASSERT_DOUBLE_GE(s->st_atim.tv_nsec, 0);
-  } else {
+      st_atim = s->st_atim.tv_sec + s->st_atim.tv_nsec / 1e9;
-    double st_atim;
+      /* Linux does not allow reading reliably the atime of a symlink
-    double st_mtim;
+       * since readlink() can update it
-#if !defined(__APPLE__) && !defined(__SUNPRO_C)
+       */
-    /* TODO(vtjnash): would it be better to normalize this? */
+      if (!test_lutime)
-    ASSERT_DOUBLE_GE(s->st_atim.tv_nsec, 0);
+        ASSERT_DOUBLE_EQ(st_atim, atime);
-    ASSERT_DOUBLE_GE(s->st_mtim.tv_nsec, 0);
+    }
-#endif
+  } else if (isinf(atime)) {
-    st_atim = s->st_atim.tv_sec + s->st_atim.tv_nsec / 1e9;
+    /* We test with timestamps that are in the distant past
-    st_mtim = s->st_mtim.tv_sec + s->st_mtim.tv_nsec / 1e9;
+     * (if you're a Gen Z-er) so check it's more recent than that.
-    /*
-     * Linux does not allow reading reliably the atime of a symlink
-     * since readlink() can update it
      */
-    if (!test_lutime)
+      ASSERT_GT(s->st_atim.tv_sec, 1739710000);
-      ASSERT_DOUBLE_EQ(st_atim, atime);
+  } else {
-    ASSERT_DOUBLE_EQ(st_mtim, mtime);
+    ASSERT_OK(0);
+  }
+
+  if (isfinite(mtime)) {
+    /* Test sub-second timestamps only when supported (such as Windows with
+     * NTFS). Some other platforms support sub-second timestamps, but that
+     * support is filesystem-dependent. Notably OS X (HFS Plus) does NOT
+     * support sub-second timestamps. But kernels may round or truncate in
+     * either direction, so we may accept either possible answer.
+     */
+    if (s->st_mtim.tv_nsec == 0) {
+      if (is_win32)
+        ASSERT_DOUBLE_EQ(mtime, (long) atime);
+      if (mtime > 0 || (long) mtime == mtime)
+        ASSERT_EQ(s->st_mtim.tv_sec, (long) mtime);
+      ASSERT_GE(s->st_mtim.tv_sec, (long) mtime - 1);
+      ASSERT_LE(s->st_mtim.tv_sec, (long) mtime);
+    } else {
+      double st_mtim;
+      /* TODO(vtjnash): would it be better to normalize this? */
+      if (!is_apple_or_sunpro_c)
+        ASSERT_DOUBLE_GE(s->st_mtim.tv_nsec, 0);
+      st_mtim = s->st_mtim.tv_sec + s->st_mtim.tv_nsec / 1e9;
+      ASSERT_DOUBLE_EQ(st_mtim, mtime);
+    }
+  } else if (isinf(mtime)) {
+    /* We test with timestamps that are in the distant past
+     * (if you're a Gen Z-er) so check it's more recent than that.
+     */
+      ASSERT_GT(s->st_mtim.tv_sec, 1739710000);
+  } else {
+    ASSERT_OK(0);
   }
 
   uv_fs_req_cleanup(&req);
@@ -1607,6 +1646,50 @@ TEST_IMPL(fs_fstat) {
 }
 
 
+TEST_IMPL(fs_fstat_st_dev) {
+  uv_fs_t req;
+  uv_fs_t req_link;
+  uv_loop_t* loop = uv_default_loop();
+  char* test_file = "tmp_st_dev";
+  char* symlink_file = "tmp_st_dev_link";
+
+  unlink(test_file);
+  unlink(symlink_file);
+
+  // Create file
+  int r = uv_fs_open(NULL, &req, test_file, UV_FS_O_RDWR | UV_FS_O_CREAT,
+      S_IWUSR | S_IRUSR, NULL);
+  ASSERT_GE(r, 0);
+  ASSERT_GE(req.result, 0);
+  uv_fs_req_cleanup(&req);
+
+  // Create a symlink
+  r = uv_fs_symlink(loop, &req, test_file, symlink_file, 0, NULL);
+  ASSERT_EQ(r, 0);
+  uv_fs_req_cleanup(&req);
+
+  // Call uv_fs_fstat for file
+  r = uv_fs_stat(loop, &req, test_file, NULL);
+  ASSERT_EQ(r, 0);
+
+  // Call uv_fs_fstat for symlink
+  r = uv_fs_stat(loop, &req_link, symlink_file, NULL);
+  ASSERT_EQ(r, 0);
+
+  // Compare st_dev
+  ASSERT_EQ(((uv_stat_t*)req.ptr)->st_dev, ((uv_stat_t*)req_link.ptr)->st_dev);
+
+  // Cleanup
+  uv_fs_req_cleanup(&req);
+  uv_fs_req_cleanup(&req_link);
+  unlink(test_file);
+  unlink(symlink_file);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
+
 TEST_IMPL(fs_fstat_stdio) {
   int fd;
   int res;
@@ -2684,13 +2767,46 @@ TEST_IMPL(fs_utime) {
 
   atime = mtime = 400497753.25; /* 1982-09-10 11:22:33.25 */
 
-  r = uv_fs_utime(NULL, &req, path, atime, mtime, NULL);
+  ASSERT_OK(uv_fs_utime(NULL, &req, path, atime, mtime, NULL));
-  ASSERT_OK(r);
   ASSERT_OK(req.result);
   uv_fs_req_cleanup(&req);
-
   check_utime(path, atime, mtime, /* test_lutime */ 0);
 
+  ASSERT_OK(uv_fs_utime(NULL,
+                        &req,
+                        path,
+                        UV_FS_UTIME_OMIT,
+                        UV_FS_UTIME_OMIT,
+                        NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_utime(NULL,
+                        &req,
+                        path,
+                        UV_FS_UTIME_NOW,
+                        UV_FS_UTIME_OMIT,
+                        NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, UV_FS_UTIME_NOW, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_utime(NULL, &req, path, atime, mtime, NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_utime(NULL,
+                        &req,
+                        path,
+                        UV_FS_UTIME_OMIT,
+                        UV_FS_UTIME_NOW,
+                        NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, UV_FS_UTIME_NOW, /* test_lutime */ 0);
+
   atime = mtime = 1291404900.25; /* 2010-12-03 20:35:00.25 - mees <3 */
   checkme.path = path;
   checkme.atime = atime;
@@ -2824,9 +2940,43 @@ TEST_IMPL(fs_futime) {
   ASSERT_OK(req.result);
 #endif
   uv_fs_req_cleanup(&req);
-
   check_utime(path, atime, mtime, /* test_lutime */ 0);
 
+  ASSERT_OK(uv_fs_futime(NULL,
+                         &req,
+                         file,
+                         UV_FS_UTIME_OMIT,
+                         UV_FS_UTIME_OMIT,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_futime(NULL,
+                         &req,
+                         file,
+                         UV_FS_UTIME_NOW,
+                         UV_FS_UTIME_OMIT,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, UV_FS_UTIME_NOW, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_futime(NULL, &req, file, atime, mtime, NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, mtime, /* test_lutime */ 0);
+
+  ASSERT_OK(uv_fs_futime(NULL,
+                         &req,
+                         file,
+                         UV_FS_UTIME_OMIT,
+                         UV_FS_UTIME_NOW,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(path, atime, UV_FS_UTIME_NOW, /* test_lutime */ 0);
+
   atime = mtime = 1291404900; /* 2010-12-03 20:35:00 - mees <3 */
 
   checkme.atime = atime;
@@ -2888,20 +3038,50 @@ TEST_IMPL(fs_lutime) {
   /* Test the synchronous version. */
   atime = mtime = 400497753.25; /* 1982-09-10 11:22:33.25 */
 
-  checkme.atime = atime;
-  checkme.mtime = mtime;
-  checkme.path = symlink_path;
-  req.data = &checkme;
-
   r = uv_fs_lutime(NULL, &req, symlink_path, atime, mtime, NULL);
-#if (defined(_AIX) && !defined(_AIX71)) ||                                    \
+#if (defined(_AIX) && !defined(_AIX71)) || defined(__MVS__)
-     defined(__MVS__)
   ASSERT_EQ(r, UV_ENOSYS);
   RETURN_SKIP("lutime is not implemented for z/OS and AIX versions below 7.1");
 #endif
   ASSERT_OK(r);
-  lutime_cb(&req);
+  ASSERT_OK(req.result);
-  ASSERT_EQ(1, lutime_cb_count);
+  uv_fs_req_cleanup(&req);
+  check_utime(symlink_path, atime, mtime, /* test_lutime */ 1);
+
+  ASSERT_OK(uv_fs_lutime(NULL,
+                         &req,
+                         symlink_path,
+                         UV_FS_UTIME_OMIT,
+                         UV_FS_UTIME_OMIT,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(symlink_path, atime, mtime, /* test_lutime */ 1);
+
+  ASSERT_OK(uv_fs_lutime(NULL,
+                         &req,
+                         symlink_path,
+                         UV_FS_UTIME_NOW,
+                         UV_FS_UTIME_OMIT,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(symlink_path, UV_FS_UTIME_NOW, mtime, /* test_lutime */ 1);
+
+  ASSERT_OK(uv_fs_lutime(NULL, &req, symlink_path, atime, mtime, NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(symlink_path, atime, mtime, /* test_lutime */ 1);
+
+  ASSERT_OK(uv_fs_lutime(NULL,
+                         &req,
+                         symlink_path,
+                         UV_FS_UTIME_OMIT,
+                         UV_FS_UTIME_NOW,
+                         NULL));
+  ASSERT_OK(req.result);
+  uv_fs_req_cleanup(&req);
+  check_utime(symlink_path, atime, UV_FS_UTIME_NOW, /* test_lutime */ 1);
 
   /* Test the asynchronous version. */
   atime = mtime = 1291404900; /* 2010-12-03 20:35:00 */
@@ -2909,11 +3089,12 @@ TEST_IMPL(fs_lutime) {
   checkme.atime = atime;
   checkme.mtime = mtime;
   checkme.path = symlink_path;
+  req.data = &checkme;
 
   r = uv_fs_lutime(loop, &req, symlink_path, atime, mtime, lutime_cb);
   ASSERT_OK(r);
   uv_run(loop, UV_RUN_DEFAULT);
-  ASSERT_EQ(2, lutime_cb_count);
+  ASSERT_EQ(1, lutime_cb_count);
 
   /* Cleanup. */
   unlink(path);
@@ -4507,6 +4688,60 @@ TEST_IMPL(fs_open_readonly_acl) {
     MAKE_VALGRIND_HAPPY(loop);
     return 0;
 }
+
+TEST_IMPL(fs_stat_no_permission) {
+    uv_passwd_t pwd;
+    uv_fs_t req;
+    int r;
+    char* filename = "test_file_no_permission.txt";
+
+    /* Setup - clear the ACL and remove the file */
+    loop = uv_default_loop();
+    r = uv_os_get_passwd(&pwd);
+    ASSERT_OK(r);
+    call_icacls("icacls %s /remove *S-1-1-0:(F)", filename);
+    unlink(filename);
+
+    /* Create the file */
+    r = uv_fs_open(loop,
+                   &open_req1,
+                   filename,
+                   UV_FS_O_RDONLY | UV_FS_O_CREAT,
+                   S_IRUSR,
+                   NULL);
+    ASSERT_GE(r, 0);
+    ASSERT_GE(open_req1.result, 0);
+    uv_fs_req_cleanup(&open_req1);
+    r = uv_fs_close(NULL, &close_req, open_req1.result, NULL);
+    ASSERT_OK(r);
+    ASSERT_OK(close_req.result);
+    uv_fs_req_cleanup(&close_req);
+
+    /* Set up ACL */
+    r = call_icacls("icacls %s /deny *S-1-1-0:(F)", filename);
+    if (r != 0) {
+        goto acl_cleanup;
+    }
+
+    /* Read file stats */
+    r = uv_fs_stat(NULL, &req, filename, NULL);
+    if (r != 0) {
+        goto acl_cleanup;
+    }
+
+    uv_fs_req_cleanup(&req);
+
+ acl_cleanup:
+    /* Cleanup */
+    call_icacls("icacls %s /reset", filename);
+    uv_fs_unlink(NULL, &unlink_req, filename, NULL);
+    uv_fs_req_cleanup(&unlink_req);
+    unlink(filename);
+    uv_os_free_passwd(&pwd);
+    ASSERT_OK(r);
+    MAKE_VALGRIND_HAPPY(loop);
+    return 0;
+}
 #endif
 
 #ifdef _WIN32

test/test-idna.c

@@ -39,7 +39,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Two-byte sequences. */
   p = b;
-  snprintf(b, sizeof(b), "\xC2\x80\xDF\xBF");
+  snprintf(b, sizeof(b), "%s", "\xC2\x80\xDF\xBF");
   ASSERT_EQ(128, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 2);
   ASSERT_EQ(0x7FF, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -47,7 +47,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Three-byte sequences. */
   p = b;
-  snprintf(b, sizeof(b), "\xE0\xA0\x80\xEF\xBF\xBF");
+  snprintf(b, sizeof(b), "%s", "\xE0\xA0\x80\xEF\xBF\xBF");
   ASSERT_EQ(0x800, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 3);
   ASSERT_EQ(0xFFFF, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -55,7 +55,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Four-byte sequences. */
   p = b;
-  snprintf(b, sizeof(b), "\xF0\x90\x80\x80\xF4\x8F\xBF\xBF");
+  snprintf(b, sizeof(b), "%s", "\xF0\x90\x80\x80\xF4\x8F\xBF\xBF");
   ASSERT_EQ(0x10000, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 4);
   ASSERT_EQ(0x10FFFF, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -63,7 +63,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Four-byte sequences > U+10FFFF; disallowed. */
   p = b;
-  snprintf(b, sizeof(b), "\xF4\x90\xC0\xC0\xF7\xBF\xBF\xBF");
+  snprintf(b, sizeof(b), "%s", "\xF4\x90\xC0\xC0\xF7\xBF\xBF\xBF");
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 4);
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -71,7 +71,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Overlong; disallowed. */
   p = b;
-  snprintf(b, sizeof(b), "\xC0\x80\xC1\x80");
+  snprintf(b, sizeof(b), "%s", "\xC0\x80\xC1\x80");
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 2);
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -79,7 +79,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Surrogate pairs; disallowed. */
   p = b;
-  snprintf(b, sizeof(b), "\xED\xA0\x80\xED\xA3\xBF");
+  snprintf(b, sizeof(b), "%s", "\xED\xA0\x80\xED\xA3\xBF");
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
   ASSERT_PTR_EQ(p, b + 3);
   ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -87,7 +87,7 @@ TEST_IMPL(utf8_decode1) {
 
   /* Simply illegal. */
   p = b;
-  snprintf(b, sizeof(b), "\xF8\xF9\xFA\xFB\xFC\xFD\xFE\xFF");
+  snprintf(b, sizeof(b), "%s", "\xF8\xF9\xFA\xFB\xFC\xFD\xFE\xFF");
 
   for (i = 1; i <= 8; i++) {
     ASSERT_EQ((unsigned) -1, uv__utf8_decode1(&p, b + sizeof(b)));
@@ -218,3 +218,15 @@ TEST_IMPL(idna_toascii) {
 #undef T
 
 #endif  /* __MVS__ */
+
+TEST_IMPL(wtf8) {
+  static const char input[] = "ᜄȺy𐞲:𞢢𘴇𐀀'¥3̞[<i$";
+  uint16_t buf[32];
+  ssize_t len;
+
+  len = uv_wtf8_length_as_utf16(input);
+  ASSERT_GT(len, 0);
+  ASSERT_LT(len, ARRAY_SIZE(buf));
+  uv_wtf8_to_utf16(input, buf, len);
+  return 0;
+}

test/test-list.h

@@ -53,7 +53,8 @@ TEST_DECLARE   (tty_raw)
 TEST_DECLARE   (tty_empty_write)
 TEST_DECLARE   (tty_large_write)
 TEST_DECLARE   (tty_raw_cancel)
-TEST_DECLARE   (tty_duplicate_vt100_fn_key)
+TEST_DECLARE   (tty_duplicate_vt100_fn_key_libuv)
+TEST_DECLARE   (tty_duplicate_vt100_fn_key_winvt)
 TEST_DECLARE   (tty_duplicate_alt_modifier_key)
 TEST_DECLARE   (tty_composing_character)
 TEST_DECLARE   (tty_cursor_up)
@@ -364,6 +365,7 @@ TEST_DECLARE   (fs_mkdtemp)
 TEST_DECLARE   (fs_mkstemp)
 TEST_DECLARE   (fs_fstat)
 TEST_DECLARE   (fs_fstat_stdio)
+TEST_DECLARE   (fs_fstat_st_dev)
 TEST_DECLARE   (fs_access)
 TEST_DECLARE   (fs_chmod)
 TEST_DECLARE   (fs_copyfile)
@@ -466,6 +468,7 @@ TEST_DECLARE   (threadpool_cancel_work)
 TEST_DECLARE   (threadpool_cancel_fs)
 TEST_DECLARE   (threadpool_cancel_single)
 TEST_DECLARE   (threadpool_cancel_when_busy)
+TEST_DECLARE   (thread_detach)
 TEST_DECLARE   (thread_local_storage)
 TEST_DECLARE   (thread_stack_size)
 TEST_DECLARE   (thread_stack_size_explicit)
@@ -477,6 +480,8 @@ TEST_DECLARE   (thread_create)
 TEST_DECLARE   (thread_equal)
 TEST_DECLARE   (thread_affinity)
 TEST_DECLARE   (thread_priority)
+TEST_DECLARE   (thread_name)
+TEST_DECLARE   (thread_name_threadpool)
 TEST_DECLARE   (dlerror)
 #if (defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))) && \
     !defined(__sun)
@@ -512,6 +517,7 @@ TEST_DECLARE   (environment_creation)
 TEST_DECLARE   (listen_with_simultaneous_accepts)
 TEST_DECLARE   (listen_no_simultaneous_accepts)
 TEST_DECLARE   (fs_stat_root)
+TEST_DECLARE   (fs_stat_no_permission)
 TEST_DECLARE   (spawn_with_an_odd_path)
 TEST_DECLARE   (spawn_no_path)
 TEST_DECLARE   (spawn_no_ext)
@@ -572,6 +578,7 @@ TEST_DECLARE  (fork_threadpool_queue_work_simple)
 
 TEST_DECLARE  (iouring_pollhup)
 
+TEST_DECLARE  (wtf8)
 TEST_DECLARE  (idna_toascii)
 TEST_DECLARE  (utf8_decode1)
 TEST_DECLARE  (utf8_decode1_overrun)
@@ -630,7 +637,8 @@ TASK_LIST_START
   TEST_ENTRY  (tty_empty_write)
   TEST_ENTRY  (tty_large_write)
   TEST_ENTRY  (tty_raw_cancel)
-  TEST_ENTRY  (tty_duplicate_vt100_fn_key)
+  TEST_ENTRY  (tty_duplicate_vt100_fn_key_libuv)
+  TEST_ENTRY  (tty_duplicate_vt100_fn_key_winvt)
   TEST_ENTRY  (tty_duplicate_alt_modifier_key)
   TEST_ENTRY  (tty_composing_character)
   TEST_ENTRY  (tty_cursor_up)
@@ -1040,6 +1048,7 @@ TASK_LIST_START
   TEST_ENTRY  (listen_with_simultaneous_accepts)
   TEST_ENTRY  (listen_no_simultaneous_accepts)
   TEST_ENTRY  (fs_stat_root)
+  TEST_ENTRY  (fs_stat_no_permission)
   TEST_ENTRY  (spawn_with_an_odd_path)
   TEST_ENTRY  (spawn_no_path)
   TEST_ENTRY  (spawn_no_ext)
@@ -1077,6 +1086,7 @@ TASK_LIST_START
   TEST_ENTRY  (fs_mkstemp)
   TEST_ENTRY  (fs_fstat)
   TEST_ENTRY  (fs_fstat_stdio)
+  TEST_ENTRY  (fs_fstat_st_dev)
   TEST_ENTRY  (fs_access)
   TEST_ENTRY  (fs_chmod)
   TEST_ENTRY  (fs_copyfile)
@@ -1179,6 +1189,7 @@ TASK_LIST_START
   TEST_ENTRY  (threadpool_cancel_fs)
   TEST_ENTRY  (threadpool_cancel_single)
   TEST_ENTRY  (threadpool_cancel_when_busy)
+  TEST_ENTRY  (thread_detach)
   TEST_ENTRY  (thread_local_storage)
   TEST_ENTRY  (thread_stack_size)
   TEST_ENTRY  (thread_stack_size_explicit)
@@ -1190,6 +1201,8 @@ TASK_LIST_START
   TEST_ENTRY  (thread_equal)
   TEST_ENTRY  (thread_affinity)
   TEST_ENTRY  (thread_priority)
+  TEST_ENTRY  (thread_name)
+  TEST_ENTRY  (thread_name_threadpool)
   TEST_ENTRY  (dlerror)
   TEST_ENTRY  (ip4_addr)
   TEST_ENTRY  (ip6_addr_link_local)
@@ -1223,6 +1236,7 @@ TASK_LIST_START
 
   TEST_ENTRY  (iouring_pollhup)
 
+  TEST_ENTRY  (wtf8)
   TEST_ENTRY  (utf8_decode1)
   TEST_ENTRY  (utf8_decode1_overrun)
   TEST_ENTRY  (uname)

test/test-pipe-getsockname.c

@@ -154,6 +154,15 @@ TEST_IMPL(pipe_getsockname) {
   ASSERT_STR_EQ(pipe_server.pipe_fname, TEST_PIPENAME);
 #endif
 
+  r = uv_pipe_getsockname(&pipe_server, NULL, &len);
+  ASSERT_EQ(r, UV_EINVAL);
+
+  r = uv_pipe_getsockname(&pipe_server, buf, NULL);
+  ASSERT_EQ(r, UV_EINVAL);
+
+  r = uv_pipe_getsockname(&pipe_server, NULL, NULL);
+  ASSERT_EQ(r, UV_EINVAL);
+
   len = sizeof(TEST_PIPENAME) - 1;
   ASSERT_EQ(UV_ENOBUFS, uv_pipe_getsockname(&pipe_server, buf, &len));
 

test/test-platform-output.c

@@ -236,5 +236,24 @@ TEST_IMPL(platform_output) {
   printf("  version: %s\n", uname.version);
   printf("  machine: %s\n", uname.machine);
 
+  err = uv_getrusage_thread(&rusage);
+  if (err != UV_ENOTSUP) {
+    ASSERT_OK(err);
+    ASSERT_UINT64_GE(rusage.ru_utime.tv_sec, 0);
+    ASSERT_UINT64_GE(rusage.ru_utime.tv_usec, 0);
+    ASSERT_UINT64_GE(rusage.ru_stime.tv_sec, 0);
+    ASSERT_UINT64_GE(rusage.ru_stime.tv_usec, 0);
+    printf("uv_getrusage_thread:\n");
+    printf("  user: %llu sec %llu microsec\n",
+          (unsigned long long) rusage.ru_utime.tv_sec,
+          (unsigned long long) rusage.ru_utime.tv_usec);
+    printf("  system: %llu sec %llu microsec\n",
+          (unsigned long long) rusage.ru_stime.tv_sec,
+          (unsigned long long) rusage.ru_stime.tv_usec);
+    printf("  page faults: %llu\n", (unsigned long long) rusage.ru_majflt);
+    printf("  maximum resident set size: %llu\n",
+          (unsigned long long) rusage.ru_maxrss);
+  }
+
   return 0;
 }

test/test-spawn.c

@@ -1329,9 +1329,7 @@ TEST_IMPL(environment_creation) {
       }
     }
     if (prev) { /* verify sort order */
-#if !defined(__MINGW32__) || defined(__MINGW64_VERSION_MAJOR)
       ASSERT_EQ(1, CompareStringOrdinal(prev, -1, str, -1, TRUE));
-#endif
     }
     ASSERT(found); /* verify that we expected this variable */
   }

test/test-thread-name.c

@@ -0,0 +1,189 @@
+/* Copyright libuv project contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+#include "../src/uv-common.h"
+
+#include <string.h>
+
+struct semaphores {
+  uv_sem_t main;
+  uv_sem_t worker;
+};
+
+static void thread_run(void* arg) {
+  int r;
+  char thread_name[16];
+  struct semaphores* sem;
+  uv_thread_t thread;
+
+  sem = arg;
+
+#ifdef _WIN32
+  /* uv_thread_self isn't defined for the main thread on Windows. */
+  thread = GetCurrentThread();
+#else
+  thread = uv_thread_self();
+#endif
+
+  r = uv_thread_setname("worker-thread");
+  ASSERT_OK(r);
+
+  uv_sem_post(&sem->worker);
+
+  r = uv_thread_getname(&thread, thread_name, sizeof(thread_name));
+  ASSERT_OK(r);
+
+  ASSERT_STR_EQ(thread_name, "worker-thread");
+
+  uv_sem_wait(&sem->main);
+}
+
+TEST_IMPL(thread_name) {
+  int r;
+  uv_thread_t threads[2];
+  char tn[UV_PTHREAD_MAX_NAMELEN_NP];
+  char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
+  char long_thread_name[UV_PTHREAD_MAX_NAMELEN_NP + 1];
+  struct semaphores sem;
+
+#if defined(__ANDROID_API__) && __ANDROID_API__ < 26 || \
+    defined(_AIX) || \
+    defined(__MVS__) || \
+    defined(__PASE__)
+  RETURN_SKIP("API not available on this platform");
+#endif
+
+  ASSERT_OK(uv_sem_init(&sem.main, 0));
+  ASSERT_OK(uv_sem_init(&sem.worker, 0));
+
+  memset(thread_name, 'a', sizeof(thread_name) - 1);
+  thread_name[sizeof(thread_name) - 1] = '\0';
+
+  memset(long_thread_name, 'a', sizeof(long_thread_name) - 1);
+  long_thread_name[sizeof(long_thread_name) - 1] = '\0';
+
+#ifdef _WIN32
+  /* uv_thread_self isn't defined for the main thread on Windows. */
+  threads[0] = GetCurrentThread();
+#else
+  threads[0] = uv_thread_self();
+#endif
+
+  r = uv_thread_getname(&threads[0], tn, sizeof(tn));
+  ASSERT_OK(r);
+
+  r = uv_thread_setname(long_thread_name);
+  ASSERT_OK(r);
+
+  r = uv_thread_getname(&threads[0], tn, sizeof(tn));
+  ASSERT_OK(r);
+  ASSERT_STR_EQ(tn, thread_name);
+
+  r = uv_thread_setname(thread_name);
+  ASSERT_OK(r);
+
+  r = uv_thread_getname(&threads[0], tn, sizeof(tn));
+  ASSERT_OK(r);
+  ASSERT_STR_EQ(tn, thread_name);
+
+  r = uv_thread_getname(&threads[0], tn, 3);
+  ASSERT_OK(r);
+  ASSERT_EQ(strlen(tn), 2);
+  ASSERT_OK(memcmp(thread_name, tn, 2));
+
+  /* Illumos doesn't support non-ASCII thread names. */
+#ifndef __illumos__
+  r = uv_thread_setname("~½¬{½");
+  ASSERT_OK(r);
+
+  r = uv_thread_getname(&threads[0], tn, sizeof(tn));
+  ASSERT_OK(r);
+  ASSERT_STR_EQ(tn, "~½¬{½");
+#endif
+
+  ASSERT_OK(uv_thread_create(threads + 1, thread_run, &sem));
+
+  uv_sem_wait(&sem.worker);
+
+  r = uv_thread_getname(threads + 1, tn, sizeof(tn));
+  ASSERT_OK(r);
+
+  ASSERT_STR_EQ(tn, "worker-thread");
+
+  uv_sem_post(&sem.main);
+
+  ASSERT_OK(uv_thread_join(threads + 1));
+
+  uv_sem_destroy(&sem.main);
+  uv_sem_destroy(&sem.worker);
+
+  return 0;
+}
+
+#define MAX_THREADS 4
+
+static void* executedThreads[MAX_THREADS] = { NULL };
+static int size;
+static uv_loop_t* loop;
+
+static unsigned short int key_exists(void* key) {
+  size_t i;
+  for (i = 0; i < MAX_THREADS; i++) {
+    if (executedThreads[i] == key) {
+      return 1;
+    }
+  }
+  return 0;
+}
+
+static void work_cb(uv_work_t* req) {
+  uv_thread_t thread = uv_thread_self();
+  req->data = &thread;
+  char tn[UV_PTHREAD_MAX_NAMELEN_NP];
+  ASSERT_OK(uv_thread_getname(&thread, tn, sizeof(tn)));
+  ASSERT_STR_EQ(tn, "libuv-worker");
+}
+
+static void after_work_cb(uv_work_t* req, int status) {
+  ASSERT_OK(status);
+  if (!key_exists(req->data)) {
+    executedThreads[size++] = req->data;
+  }
+
+  if (size == MAX_THREADS) {
+    return;
+  }
+
+  uv_queue_work(loop, req, work_cb, after_work_cb);
+}
+
+TEST_IMPL(thread_name_threadpool) {
+  uv_work_t req;
+  loop = uv_default_loop();
+  // Just to make sure all workers will be executed
+  // with the correct thread name
+  ASSERT_OK(uv_queue_work(loop, &req, work_cb, after_work_cb));
+  uv_run(loop, UV_RUN_DEFAULT);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}

test/test-thread.c

@@ -294,3 +294,13 @@ TEST_IMPL(thread_stack_size_explicit) {
 
   return 0;
 }
+
+static void thread_detach_cb(void* arg) {}
+
+TEST_IMPL(thread_detach) {
+  uv_thread_t thread;
+  ASSERT_OK(uv_thread_create(&thread, thread_detach_cb, NULL));
+  ASSERT_OK(uv_thread_detach(&thread));
+
+  return 0;
+}

test/test-tty-duplicate-key.c

@@ -131,7 +131,7 @@ static void make_key_event_records(WORD virt_key, DWORD ctr_key_state,
 # undef KEV
 }
 
-TEST_IMPL(tty_duplicate_vt100_fn_key) {
+TEST_IMPL(tty_duplicate_vt100_fn_key_libuv) {
   int r;
   int ttyin_fd;
   uv_tty_t tty_in;
@@ -163,6 +163,10 @@ TEST_IMPL(tty_duplicate_vt100_fn_key) {
   r = uv_read_start((uv_stream_t*)&tty_in, tty_alloc, tty_read);
   ASSERT_OK(r);
 
+  /*
+   * libuv has chosen to emit ESC[[A, but other terminals, and even
+   * Windows itself use a different escape sequence, see the test below.
+   */
   expect_str = ESC"[[A";
   expect_nread = strlen(expect_str);
 
@@ -184,6 +188,62 @@ TEST_IMPL(tty_duplicate_vt100_fn_key) {
   return 0;
 }
 
+TEST_IMPL(tty_duplicate_vt100_fn_key_winvt) {
+  int r;
+  int ttyin_fd;
+  uv_tty_t tty_in;
+  uv_loop_t* loop;
+  HANDLE handle;
+  INPUT_RECORD records[2];
+  DWORD written;
+
+  loop = uv_default_loop();
+
+  /* Make sure we have an FD that refers to a tty */
+  handle = CreateFileA("conin$",
+                       GENERIC_READ | GENERIC_WRITE,
+                       FILE_SHARE_READ | FILE_SHARE_WRITE,
+                       NULL,
+                       OPEN_EXISTING,
+                       FILE_ATTRIBUTE_NORMAL,
+                       NULL);
+  ASSERT_PTR_NE(handle, INVALID_HANDLE_VALUE);
+  ttyin_fd = _open_osfhandle((intptr_t) handle, 0);
+  ASSERT_GE(ttyin_fd, 0);
+  ASSERT_EQ(UV_TTY, uv_guess_handle(ttyin_fd));
+
+  r = uv_tty_init(uv_default_loop(), &tty_in, ttyin_fd, 1);  /* Readable. */
+  ASSERT_OK(r);
+  ASSERT(uv_is_readable((uv_stream_t*) &tty_in));
+  ASSERT(!uv_is_writable((uv_stream_t*) &tty_in));
+
+  r = uv_read_start((uv_stream_t*)&tty_in, tty_alloc, tty_read);
+  ASSERT_OK(r);
+
+  /*
+   * Some keys, like F1, get are assigned a different value by Windows
+   * in ENABLE_VIRTUAL_TERMINAL_INPUT mode vs. libuv in the test above.
+   */
+  expect_str = ESC"OP";
+  expect_nread = strlen(expect_str);
+
+  /* Turn on raw mode. */
+  r = uv_tty_set_mode(&tty_in, UV_TTY_MODE_RAW_VT);
+  ASSERT_OK(r);
+
+  /*
+   * Send F1 keystroke.
+   */
+  make_key_event_records(VK_F1, 0, TRUE, records);
+  WriteConsoleInputW(handle, records, ARRAY_SIZE(records), &written);
+  ASSERT_EQ(written, ARRAY_SIZE(records));
+
+  uv_run(loop, UV_RUN_DEFAULT);
+
+  MAKE_VALGRIND_HAPPY(loop);
+  return 0;
+}
+
 TEST_IMPL(tty_duplicate_alt_modifier_key) {
   int r;
   int ttyin_fd;

test/test-udp-mmsg.c

@@ -32,12 +32,12 @@
 #define BUFFER_MULTIPLIER 20
 #define MAX_DGRAM_SIZE (64 * 1024)
 #define NUM_SENDS 40
-#define EXPECTED_MMSG_ALLOCS (NUM_SENDS / BUFFER_MULTIPLIER)
 
 static uv_udp_t recver;
 static uv_udp_t sender;
 static int recv_cb_called;
 static int received_datagrams;
+static int read_bytes;
 static int close_cb_called;
 static int alloc_cb_called;
 
@@ -74,6 +74,7 @@ static void recv_cb(uv_udp_t* handle,
                     const struct sockaddr* addr,
                     unsigned flags) {
   ASSERT_GE(nread, 0);
+  read_bytes += nread;
 
   /* free and return if this is a mmsg free-only callback invocation */
   if (flags & UV_UDP_MMSG_FREE) {
@@ -140,7 +141,7 @@ TEST_IMPL(udp_mmsg) {
 
   /* On platforms that don't support mmsg, each recv gets its own alloc */
   if (uv_udp_using_recvmmsg(&recver))
-    ASSERT_EQ(alloc_cb_called, EXPECTED_MMSG_ALLOCS);
+    ASSERT_EQ(read_bytes, NUM_SENDS * 4); /* we're sending 4 bytes per datagram */
   else
     ASSERT_EQ(alloc_cb_called, recv_cb_called);
 

test/test-udp-multicast-join.c

@@ -36,10 +36,9 @@ static uv_udp_t client;
 static uv_udp_send_t req;
 static uv_udp_send_t req_ss;
 
+static int darwin_ebusy_errors;
 static int cl_recv_cb_called;
-
 static int sv_send_cb_called;
-
 static int close_cb_called;
 
 static void alloc_cb(uv_handle_t* handle,
@@ -128,6 +127,13 @@ static void cl_recv_cb(uv_udp_t* handle,
 
 #if !defined(__NetBSD__)
     r = uv_udp_set_source_membership(&server, MULTICAST_ADDR, NULL, source_addr, UV_JOIN_GROUP);
+#if defined(__APPLE__)
+    if (r == UV_EBUSY) {
+      uv_close((uv_handle_t*) &server, close_cb);
+      darwin_ebusy_errors++;
+      return;
+    }
+#endif
     ASSERT_OK(r);
 #endif
 
@@ -160,7 +166,13 @@ TEST_IMPL(udp_multicast_join) {
   r = uv_udp_set_membership(&server, MULTICAST_ADDR, NULL, UV_JOIN_GROUP);
   if (r == UV_ENODEV)
     RETURN_SKIP("No multicast support.");
+  if (r == UV_ENOEXEC)
+    RETURN_SKIP("No multicast support (likely a firewall issue).");
   ASSERT_OK(r);
+#if defined(__ANDROID__)
+  /* It returns an ENOSYS error */
+  RETURN_SKIP("Test does not currently work in ANDROID");
+#endif
 
   r = uv_udp_recv_start(&server, alloc_cb, cl_recv_cb);
   ASSERT_OK(r);
@@ -175,6 +187,9 @@ TEST_IMPL(udp_multicast_join) {
   /* run the loop till all events are processed */
   uv_run(uv_default_loop(), UV_RUN_DEFAULT);
 
+  if (darwin_ebusy_errors > 0)
+    RETURN_SKIP("Unexplained macOS IP_ADD_SOURCE_MEMBERSHIP EBUSY bug");
+
   ASSERT_EQ(2, cl_recv_cb_called);
   ASSERT_EQ(2, sv_send_cb_called);
   ASSERT_EQ(2, close_cb_called);

test/test-udp-multicast-join6.c

@@ -33,6 +33,7 @@
 #if defined(__APPLE__)          || \
     defined(_AIX)               || \
     defined(__MVS__)            || \
+    defined(__FreeBSD__)        || \
     defined(__NetBSD__)         || \
     defined(__OpenBSD__)
   #define MULTICAST_ADDR "ff02::1%lo0"

test/test-udp-try-send.c

@@ -60,8 +60,6 @@ static void sv_recv_cb(uv_udp_t* handle,
                        const uv_buf_t* rcvbuf,
                        const struct sockaddr* addr,
                        unsigned flags) {
-  ASSERT_GT(nread, 0);
-
   if (nread == 0) {
     ASSERT_NULL(addr);
     return;
@@ -70,11 +68,17 @@ static void sv_recv_cb(uv_udp_t* handle,
   ASSERT_EQ(4, nread);
   ASSERT_NOT_NULL(addr);
 
-  ASSERT_OK(memcmp("EXIT", rcvbuf->base, nread));
+  if (!memcmp("EXIT", rcvbuf->base, nread)) {
-  uv_close((uv_handle_t*) handle, close_cb);
+    uv_close((uv_handle_t*) handle, close_cb);
-  uv_close((uv_handle_t*) &client, close_cb);
+    uv_close((uv_handle_t*) &client, close_cb);
+  } else {
+    ASSERT_MEM_EQ(rcvbuf->base, "HELO", 4);
+  }
 
   sv_recv_cb_called++;
+
+  if (sv_recv_cb_called == 2)
+    uv_udp_recv_stop(handle);
 }
 
 
@@ -101,9 +105,33 @@ TEST_IMPL(udp_try_send) {
   ASSERT_OK(r);
 
   buf = uv_buf_init(buffer, sizeof(buffer));
+
+  r = uv_udp_try_send(&client, &buf, 0, (const struct sockaddr*) &addr);
+  ASSERT_EQ(r, UV_EINVAL);
+
   r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &addr);
   ASSERT_EQ(r, UV_EMSGSIZE);
 
+  uv_buf_t* bufs[] = {&buf, &buf};
+  unsigned int nbufs[] = {1, 1};
+  struct sockaddr* addrs[] = {
+    (struct sockaddr*) &addr,
+    (struct sockaddr*) &addr,
+  };
+
+  ASSERT_EQ(0, sv_recv_cb_called);
+
+  buf = uv_buf_init("HELO", 4);
+  r = uv_udp_try_send2(&client, 2, bufs, nbufs, addrs, /*flags*/0);
+  ASSERT_EQ(r, 2);
+
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+
+  ASSERT_EQ(2, sv_recv_cb_called);
+
+  r = uv_udp_recv_start(&server, alloc_cb, sv_recv_cb);
+  ASSERT_OK(r);
+
   buf = uv_buf_init("EXIT", 4);
   r = uv_udp_try_send(&client, &buf, 1, (const struct sockaddr*) &addr);
   ASSERT_EQ(4, r);
@@ -111,7 +139,7 @@ TEST_IMPL(udp_try_send) {
   uv_run(uv_default_loop(), UV_RUN_DEFAULT);
 
   ASSERT_EQ(2, close_cb_called);
-  ASSERT_EQ(1, sv_recv_cb_called);
+  ASSERT_EQ(3, sv_recv_cb_called);
 
   ASSERT_OK(client.send_queue_size);
   ASSERT_OK(server.send_queue_size);