curl/CMake/Platforms/WindowsCache.cmake
Daniel Stenberg c72cefea0f
select: use poll() if existing, avoid poll() with no sockets
poll() on macOS 10.12 was deemed broken in 2016 when we discovered that
it misbehaves when provided with no sockets to wait for. The
HAVE_POLL_FINE is used to mark a poll() implementation that behaves
correctly: it *should* still wait the timeout time.

curl has therefore opted to use select() on Apple operating systems ever
since. To avoid the risk that this or other breakage cause problems.

However, using select() internally is also bad because it suffers from
problems when using file descriptors beyond 1024.

This change makes poll() used if it is present, but if there is no
sockets to wait for it avoids using poll() and instead falls back to
select() - but without any sockets to wait for there is no 1024 problem.

This removes all previous special-handling involving HAVE_POLL_FINE.

ref: https://daniel.haxx.se/blog/2016/10/11/poll-on-mac-10-12-is-broken/

Closes #15096
2024-10-01 15:11:50 +02:00

197 lines
5.0 KiB
CMake

#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
if(NOT WIN32)
message(FATAL_ERROR "This file should be included on Windows platform only")
endif()
set(HAVE_LOCALE_H 1)
if(MINGW)
set(HAVE_SNPRINTF 1)
set(HAVE_UNISTD_H 1)
set(HAVE_LIBGEN_H 1)
set(HAVE_STDDEF_H 1) # detected by CMake internally in check_type_size()
set(HAVE_STDBOOL_H 1)
set(HAVE_BOOL_T "${HAVE_STDBOOL_H}")
set(HAVE_STRTOLL 1)
set(HAVE_BASENAME 1)
set(HAVE_STRCASECMP 1)
set(HAVE_FTRUNCATE 1)
set(HAVE_SYS_PARAM_H 1)
set(HAVE_SYS_TIME_H 1)
set(HAVE_GETTIMEOFDAY 1)
set(HAVE_STRINGS_H 1) # wrapper to string.h
set(HAVE_UTIME_H 1) # wrapper to sys/utime.h
set(HAVE_DIRENT_H 1)
set(HAVE_OPENDIR 1)
else()
set(HAVE_LIBGEN_H 0)
set(HAVE_STRCASECMP 0)
set(HAVE_FTRUNCATE 0)
set(HAVE_SYS_PARAM_H 0)
set(HAVE_SYS_TIME_H 0)
set(HAVE_GETTIMEOFDAY 0)
set(HAVE_STRINGS_H 0)
set(HAVE_UTIME_H 0)
set(HAVE_DIRENT_H 0)
set(HAVE_OPENDIR 0)
if(MSVC)
set(HAVE_UNISTD_H 0)
set(HAVE_LOCALE_H 1)
set(HAVE_STDDEF_H 1) # detected by CMake internally in check_type_size()
set(HAVE_STDATOMIC_H 0)
if(NOT MSVC_VERSION LESS 1800)
set(HAVE_STDBOOL_H 1)
set(HAVE_STRTOLL 1)
else()
set(HAVE_STDBOOL_H 0)
set(HAVE_STRTOLL 0)
endif()
set(HAVE_BOOL_T "${HAVE_STDBOOL_H}")
if(NOT MSVC_VERSION LESS 1900)
set(HAVE_SNPRINTF 1)
else()
set(HAVE_SNPRINTF 0)
endif()
set(HAVE_BASENAME 0)
set(HAVE_STRTOK_R 0)
set(HAVE_FILE_OFFSET_BITS 0)
set(HAVE_ATOMIC 0)
endif()
endif()
# Available in Windows XP and newer
set(HAVE_GETADDRINFO 1)
set(HAVE_FREEADDRINFO 1)
set(HAVE_FCHMOD 0)
set(HAVE_SOCKETPAIR 0)
set(HAVE_SENDMSG 0)
set(HAVE_SENDMMSG 0)
set(HAVE_ALARM 0)
set(HAVE_FCNTL 0)
set(HAVE_GETPPID 0)
set(HAVE_UTIMES 0)
set(HAVE_GETPWUID_R 0)
set(HAVE_STRERROR_R 0)
set(HAVE_SIGINTERRUPT 0)
set(HAVE_PIPE 0)
set(HAVE_EVENTFD 0)
set(HAVE_IF_NAMETOINDEX 0)
set(HAVE_GETRLIMIT 0)
set(HAVE_SETRLIMIT 0)
set(HAVE_FSETXATTR 0)
set(HAVE_LIBSOCKET 0)
set(HAVE_SETLOCALE 1)
set(HAVE_SETMODE 1)
set(HAVE_GETPEERNAME 1)
set(HAVE_GETSOCKNAME 1)
set(HAVE_GETHOSTNAME 1)
set(HAVE_LIBZ 0)
set(HAVE_RECV 1)
set(HAVE_SEND 1)
set(HAVE_STROPTS_H 0)
set(HAVE_SYS_XATTR_H 0)
set(HAVE_ARC4RANDOM 0)
set(HAVE_FNMATCH 0)
set(HAVE_SCHED_YIELD 0)
set(HAVE_ARPA_INET_H 0)
set(HAVE_FCNTL_H 1)
set(HAVE_IFADDRS_H 0)
set(HAVE_IO_H 1)
set(HAVE_NETDB_H 0)
set(HAVE_NETINET_IN_H 0)
set(HAVE_NETINET_TCP_H 0)
set(HAVE_NETINET_UDP_H 0)
set(HAVE_NET_IF_H 0)
set(HAVE_IOCTL_SIOCGIFADDR 0)
set(HAVE_POLL_H 0)
set(HAVE_POLL 0)
set(HAVE_PWD_H 0)
set(HAVE_SYS_EVENTFD_H 0)
set(HAVE_SYS_FILIO_H 0)
set(HAVE_SYS_WAIT_H 0)
set(HAVE_SYS_IOCTL_H 0)
set(HAVE_SYS_POLL_H 0)
set(HAVE_SYS_RESOURCE_H 0)
set(HAVE_SYS_SELECT_H 0)
set(HAVE_SYS_SOCKET_H 0)
set(HAVE_SYS_SOCKIO_H 0)
set(HAVE_SYS_STAT_H 1)
set(HAVE_SYS_TYPES_H 1)
set(HAVE_SYS_UN_H 0)
set(HAVE_SYS_UTIME_H 1)
set(HAVE_TERMIOS_H 0)
set(HAVE_TERMIO_H 0)
set(HAVE_LINUX_TCP_H 0)
set(HAVE_FSEEKO 0) # mingw-w64 2.0.0 and newer has it
set(HAVE__FSEEKI64 1)
set(HAVE_SOCKET 1)
set(HAVE_SELECT 1)
set(HAVE_STRDUP 1)
set(HAVE_STRICMP 1)
set(HAVE_STRCMPI 1)
set(HAVE_MEMRCHR 0)
set(HAVE_CLOSESOCKET 1)
set(HAVE_SIGSETJMP 0)
set(HAVE_SOCKADDR_IN6_SIN6_SCOPE_ID 1)
set(HAVE_GETPASS_R 0)
set(HAVE_GETPWUID 0)
set(HAVE_GETEUID 0)
set(HAVE_UTIME 1)
set(HAVE_GMTIME_R 0)
set(HAVE_GETHOSTBYNAME_R 0)
set(HAVE_SIGNAL 1)
set(HAVE_SIGACTION 0)
set(HAVE_GLIBC_STRERROR_R 0)
set(HAVE_MACH_ABSOLUTE_TIME 0)
set(HAVE_GETIFADDRS 0)
set(HAVE_FCNTL_O_NONBLOCK 0)
set(HAVE_IOCTLSOCKET 1)
set(HAVE_IOCTLSOCKET_CAMEL 0)
set(HAVE_IOCTLSOCKET_CAMEL_FIONBIO 0)
set(HAVE_IOCTLSOCKET_FIONBIO 1)
set(HAVE_IOCTL_FIONBIO 0)
set(HAVE_SETSOCKOPT_SO_NONBLOCK 0)
set(HAVE_POSIX_STRERROR_R 0)
set(HAVE_MSG_NOSIGNAL 0)
set(HAVE_STRUCT_TIMEVAL 1)
set(HAVE_STRUCT_SOCKADDR_STORAGE 1)
set(HAVE_GETHOSTBYNAME_R_3 0)
set(HAVE_GETHOSTBYNAME_R_3_REENTRANT 0)
set(HAVE_GETHOSTBYNAME_R_5 0)
set(HAVE_GETHOSTBYNAME_R_5_REENTRANT 0)
set(HAVE_GETHOSTBYNAME_R_6 0)
set(HAVE_GETHOSTBYNAME_R_6_REENTRANT 0)
set(HAVE_O_NONBLOCK 0)
set(HAVE_IN_ADDR_T 0)
set(STDC_HEADERS 1)
set(HAVE_SIZEOF_SUSECONDS_T 0)
set(HAVE_SIZEOF_SA_FAMILY_T 0)