daf8a45d44
Change the return type from int to uv_os_fd_t so we can return an int on Unix and a HANDLE on Windows. Applications can use this to poll the libuv event loop from another thread as is now possible on Unix. The test implementation is based on what Electron does: https://github.com/electron/electron/blob/master/atom/common/node_bindings_win.cc Refs: https://github.com/libuv/libuv/issues/965 PR-URL: https://github.com/libuv/libuv/pull/1007 Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Imran Iqbal <imran@imraniqbal.org>
172 lines
4.5 KiB
C
172 lines
4.5 KiB
C
/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "uv.h"
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#include "task.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#ifndef HAVE_KQUEUE
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# if defined(__APPLE__) || \
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defined(__DragonFly__) || \
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defined(__FreeBSD__) || \
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defined(__OpenBSD__) || \
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defined(__NetBSD__)
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# define HAVE_KQUEUE 1
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# endif
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#endif
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#ifndef HAVE_EPOLL
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# if defined(__linux__)
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# define HAVE_EPOLL 1
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# endif
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#endif
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#if defined(HAVE_KQUEUE) || defined(HAVE_EPOLL) || defined(_WIN32)
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#if defined(HAVE_KQUEUE)
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# include <sys/types.h>
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# include <sys/event.h>
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# include <sys/time.h>
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#endif
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#if defined(HAVE_EPOLL)
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# include <sys/epoll.h>
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#endif
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static uv_thread_t embed_thread;
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static uv_sem_t embed_sem;
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static uv_timer_t embed_timer;
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static uv_async_t embed_async;
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static volatile int embed_closed;
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static int embed_timer_called;
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#if defined(_WIN32)
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static void embed_thread_poll_win(HANDLE iocp, int timeout) {
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DWORD bytes;
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ULONG_PTR key;
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OVERLAPPED* overlapped;
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GetQueuedCompletionStatus(iocp,
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&bytes,
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&key,
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&overlapped,
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timeout);
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/* Give the event back so the loop can deal with it. */
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if (overlapped != NULL)
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PostQueuedCompletionStatus(iocp,
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bytes,
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key,
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overlapped);
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}
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#else
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static void embed_thread_poll_unix(int fd, int timeout) {
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int r;
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do {
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#if defined(HAVE_KQUEUE)
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struct timespec ts;
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ts.tv_sec = timeout / 1000;
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ts.tv_nsec = (timeout % 1000) * 1000000;
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r = kevent(fd, NULL, 0, NULL, 0, &ts);
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#elif defined(HAVE_EPOLL)
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{
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struct epoll_event ev;
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r = epoll_wait(fd, &ev, 1, timeout);
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}
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#endif
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} while (r == -1 && errno == EINTR);
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}
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#endif /* !_WIN32 */
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static void embed_thread_runner(void* arg) {
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uv_os_fd_t fd;
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int timeout;
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while (!embed_closed) {
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fd = uv_backend_fd(uv_default_loop());
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timeout = uv_backend_timeout(uv_default_loop());
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#if defined(_WIN32)
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embed_thread_poll_win(fd, timeout);
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#else
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embed_thread_poll_unix(fd, timeout);
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#endif
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uv_async_send(&embed_async);
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uv_sem_wait(&embed_sem);
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}
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}
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static void embed_cb(uv_async_t* async) {
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uv_run(uv_default_loop(), UV_RUN_ONCE);
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uv_sem_post(&embed_sem);
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}
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static void embed_timer_cb(uv_timer_t* timer) {
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embed_timer_called++;
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embed_closed = 1;
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uv_close((uv_handle_t*) &embed_async, NULL);
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}
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#endif
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TEST_IMPL(embed) {
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#if defined(HAVE_KQUEUE) || defined(HAVE_EPOLL) || defined(_WIN32)
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uv_loop_t external;
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ASSERT(0 == uv_loop_init(&external));
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embed_timer_called = 0;
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embed_closed = 0;
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uv_async_init(&external, &embed_async, embed_cb);
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/* Start timer in default loop */
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uv_timer_init(uv_default_loop(), &embed_timer);
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uv_timer_start(&embed_timer, embed_timer_cb, 250, 0);
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/* Start worker that will interrupt external loop */
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uv_sem_init(&embed_sem, 0);
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uv_thread_create(&embed_thread, embed_thread_runner, NULL);
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/* But run external loop */
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uv_run(&external, UV_RUN_DEFAULT);
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uv_thread_join(&embed_thread);
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uv_loop_close(&external);
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ASSERT(embed_timer_called == 1);
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return 0;
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#else
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RETURN_SKIP("Not supported in the current platform.");
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#endif
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}
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