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2024-01-03Update copyright years.Jakub Jelinek1-1/+1
2023-01-16Update copyright years.Jakub Jelinek1-1/+1
2023-01-13libstdc++: Fix unintended layout change to std::basic_filebuf [PR108331]Jonathan Wakely1-0/+8
GCC 13 has a new implementation of gthr-win32.h which supports C++11 mutexes, threads etc. but this causes an unintended ABI break. The __gthread_mutex_t type is always used in std::basic_filebuf even in C++98, so independent of whether C++11 sync primitives work or not. Because that type changed for the win32 thread model, we have a layout change in std::basic_filebuf. The member is completely unused, it just gets passed to the std::__basic_file constructor and ignored. So we don't need that mutex to actually work, we just need its layout to not change. Introduce a new __gthr_win32_legacy_mutex_t struct in gthr-win32.h with the old layout, and conditionally use that in std::basic_filebuf. PR libstdc++/108331 libgcc/ChangeLog: * config/i386/gthr-win32.h (__gthr_win32_legacy_mutex_t): New struct matching the previous __gthread_mutex_t struct. (__GTHREAD_LEGACY_MUTEX_T): Define. libstdc++-v3/ChangeLog: * config/io/c_io_stdio.h (__c_lock): Define as a typedef for __GTHREAD_LEGACY_MUTEX_T if defined.
2022-12-25libgcc: fix gfortran build on WindowsJonathan Yong1-1/+3
Broken by 9149a5b7e0a66b7b94d5b7db3194a975d18dea2f. CC_NONE is defined by wingdi.h and conflicting with gcc. Committed as obvious. libgcc/: * config/i386/gthr-win32.h: undef CC_NONE Signed-off-by: Jonathan Yong <10walls@gmail.com>
2022-12-23Reimplement GNU threads library on native WindowsEric Botcazou1-218/+318
This reimplements the GNU threads library on native Windows (except for the Objective-C specific subset) using direct Win32 API calls, in lieu of the implementation based on semaphores. This base implementations requires Windows XP/Server 2003, which was the default minimal setting of MinGW-W64 until end of 2020. This also adds the support required for the C++11 threads, using again direct Win32 API calls; this additional layer requires Windows Vista/Server 2008 and is enabled only if _WIN32_WINNT >= 0x0600. This also changes libstdc++ to pass -D_WIN32_WINNT=0x0600 but only when the switch --enable-libstdcxx-threads is passed, which means that C++11 threads are still disabled by default *unless* MinGW-W64 itself is configured for Windows Vista/Server 2008 or later by default (this has been the case in the development version since end of 2020, for earlier versions you can configure it --with-default-win32-winnt=0x0600 to get the same effect). I only manually tested it on i686-w64-mingw32 and x86_64-w64-mingw32 but AdaCore has used it in their C/C++/Ada compilers for 3 years now and the 30_threads chapter of the libstdc++ testsuite was clean at the time. 2022-10-31 Eric Botcazou <ebotcazou@adacore.com> libgcc/ * config.host (i[34567]86-*-mingw*): Add thread fragment after EH one as well as new i386/t-slibgcc-mingw fragment. (x86_64-*-mingw*): Likewise. * config/i386/gthr-win32.h: If _WIN32_WINNT is at least 0x0600, define both __GTHREAD_HAS_COND and __GTHREADS_CXX0X to 1. Error out if _GTHREAD_USE_MUTEX_TIMEDLOCK is 1. Include stdlib.h instead of errno.h and do not include _mingw.h. (CONST_CAST2): Add specific definition for C++. (ATTRIBUTE_UNUSED): New macro. (__UNUSED_PARAM): Delete. Define WIN32_LEAN_AND_MEAN before including windows.h. (__gthread_objc_data_tls): Use TLS_OUT_OF_INDEXES instead of (DWORD)-1. (__gthread_objc_init_thread_system): Likewise. (__gthread_objc_thread_get_data): Minor tweak. (__gthread_objc_condition_allocate): Use ATTRIBUTE_UNUSED. (__gthread_objc_condition_deallocate): Likewise. (__gthread_objc_condition_wait): Likewise. (__gthread_objc_condition_broadcast): Likewise. (__gthread_objc_condition_signal): Likewise. Include sys/time.h. (__gthr_win32_DWORD): New typedef. (__gthr_win32_HANDLE): Likewise. (__gthr_win32_CRITICAL_SECTION): Likewise. (__gthr_win32_CONDITION_VARIABLE): Likewise. (__gthread_t): Adjust. (__gthread_key_t): Likewise. (__gthread_mutex_t): Likewise. (__gthread_recursive_mutex_t): Likewise. (__gthread_cond_t): New typedef. (__gthread_time_t): Likewise. (__GTHREAD_MUTEX_INIT_DEFAULT): Delete. (__GTHREAD_RECURSIVE_MUTEX_INIT_DEFAULT): Likewise. (__GTHREAD_COND_INIT_FUNCTION): Define. (__GTHREAD_TIME_INIT): Likewise. (__gthr_i486_lock_cmp_xchg): Delete. (__gthr_win32_create): Declare. (__gthr_win32_join): Likewise. (__gthr_win32_self): Likewise. (__gthr_win32_detach): Likewise. (__gthr_win32_equal): Likewise. (__gthr_win32_yield): Likewise. (__gthr_win32_mutex_destroy): Likewise. (__gthr_win32_cond_init_function): Likewise if __GTHREADS_HAS_COND is 1. (__gthr_win32_cond_broadcast): Likewise. (__gthr_win32_cond_signal): Likewise. (__gthr_win32_cond_wait): Likewise. (__gthr_win32_cond_timedwait): Likewise. (__gthr_win32_recursive_mutex_init_function): Delete. (__gthr_win32_recursive_mutex_lock): Likewise. (__gthr_win32_recursive_mutex_unlock): Likewise. (__gthr_win32_recursive_mutex_destroy): Likewise. (__gthread_create): New inline function. (__gthread_join): Likewise. (__gthread_self): Likewise. (__gthread_detach): Likewise. (__gthread_equal): Likewise. (__gthread_yield): Likewise. (__gthread_cond_init_function): Likewise if __GTHREADS_HAS_COND is 1. (__gthread_cond_broadcast): Likewise. (__gthread_cond_signal): Likewise. (__gthread_cond_wait): Likewise. (__gthread_cond_timedwait): Likewise. (__GTHREAD_WIN32_INLINE): New macro. (__GTHREAD_WIN32_COND_INLINE): Likewise. (__GTHREAD_WIN32_ACTIVE_P): Likewise. Define WIN32_LEAN_AND_MEAN before including windows.h. (__gthread_once): Minor tweaks. (__gthread_key_create): Use ATTRIBUTE_UNUSED and TLS_OUT_OF_INDEXES. (__gthread_key_delete): Minor tweak. (__gthread_getspecific): Likewise. (__gthread_setspecific): Likewise. (__gthread_mutex_init_function): Reimplement. (__gthread_mutex_destroy): Likewise. (__gthread_mutex_lock): Likewise. (__gthread_mutex_trylock): Likewise. (__gthread_mutex_unlock): Likewise. (__gthr_win32_abs_to_rel_time): Declare. (__gthread_recursive_mutex_init_function): Reimplement. (__gthread_recursive_mutex_destroy): Likewise. (__gthread_recursive_mutex_lock): Likewise. (__gthread_recursive_mutex_trylock): Likewise. (__gthread_recursive_mutex_unlock): Likewise. (__gthread_cond_destroy): New inline function. (__gthread_cond_wait_recursive): Likewise. * config/i386/gthr-win32.c: Delete everything. Include gthr-win32.h to get the out-of-line version of inline routines. Add compile-time checks for the local version of the Win32 types. * config/i386/gthr-win32-cond.c: New file. * config/i386/gthr-win32-thread.c: Likewise. * config/i386/t-gthr-win32: Add config/i386/gthr-win32-thread.c to the EH part, config/i386/gthr-win32-cond.c and config/i386/gthr-win32.c to the static version of libgcc. * config/i386/t-slibgcc-mingw: New file. * config/i386/libgcc-mingw.ver: Likewise. libstdc++-v3/ * acinclude.m4 (GLIBCXX_EXPORT_FLAGS): Substitute CPPFLAGS. (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Set ac_has_sched_yield and ac_has_win32_sleep to yes for MinGW. Change HAVE_WIN32_SLEEP into _GLIBCXX_USE_WIN32_SLEEP. (GLIBCXX_CHECK_GTHREADS): Add _WIN32_THREADS to compilation flags for Win32 threads and force _GTHREAD_USE_MUTEX_TIMEDLOCK to 0 for them. Add -D_WIN32_WINNT=0x0600 to compilation flags if yes was configured and add it to CPPFLAGS on success. * config.h.in: Regenerate. * configure: Likewise. * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_GET_NPROCS_WIN32): Define to 1. * config/os/mingw32/os_defines.h (_GLIBCXX_USE_GET_NPROCS_WIN32): Ditto * src/c++11/thread.cc (get_nprocs): Provide Win32 implementation if _GLIBCXX_USE_GET_NPROCS_WIN32 is defined. Replace HAVE_WIN32_SLEEP with USE_WIN32_SLEEP. * testsuite/19_diagnostics/headers/system_error/errc_std_c++0x.cc: Add missing conditional compilation. * testsuite/lib/libstdc++.exp (check_v3_target_sleep): Add support for _GLIBCXX_USE_WIN32_SLEEP. (check_v3_target_nprocs): Likewise for _GLIBCXX_USE_GET_NPROCS_WIN32. Signed-off-by: Eric Botcazou <ebotcazou@adacore.com> Signed-off-by: Jonathan Yong <10walls@gmail.com>
2022-01-15libgcc: Fix __gthr_i486_lock_cmp_xchg clobber for WindowsJonathan Yong1-21/+2
2022-01-14 David <gccbugzilla@limegreensocks.com> libgcc/ * config/i386/gthr-win32.c (__gthr_i486_lock_cmp_xchg): Remove inlined version, Windows 95 is no longer relevant. * config/i386/gthr-win32.h (__GTHREAD_I486_INLINE_LOCK_PRIMITIVES): unset.
2022-01-03Update copyright years.Jakub Jelinek1-1/+1
2021-01-04Update copyright years.Jakub Jelinek1-1/+1
2020-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r279813
2019-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r267494
2018-01-03Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r256169
2017-03-02gthr-win32.h: Define NOGDI before windows.h include to prevent w32api ↵Jonathan Yong1-0/+1
CC_NONE macro clash... * config/i386/gthr-win32.h: Define NOGDI before windows.h include to prevent w32api CC_NONE macro clash with libgfortran. From-SVN: r245835
2017-01-01Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r243994
2016-01-04Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r232055
2015-03-02re PR libgcc/64885 (libstdc++ all_attributes failure)Jonathan Wakely1-1/+1
PR libgcc/64885 * gthr-single.h: Use __unused__ attribute instead of unused. * config/gthr-vxworks.h: Likewise. * config/i386/gthr-win32.h: Likewise. From-SVN: r221120
2015-01-05Update copyright years.Jakub Jelinek1-1/+1
From-SVN: r219188
2014-01-02Update copyright years in libgcc/Richard Sandiford1-1/+1
From-SVN: r206295
2013-09-17gthr-win32.c: CreateSemaphoreW instead of CreateSemaphoreA.Jacek Caban1-2/+2
2013-09-17 Jacek Caban <jacek@codeweavers.com> * config/i386/gthr-win32.c: CreateSemaphoreW instead of CreateSemaphoreA. * config/i386/gthr-win32.h: Likewise. From-SVN: r202648
2013-02-04Update copyright in libgcc.Richard Sandiford1-1/+1
From-SVN: r195731
2012-10-05re PR other/53889 (Gthreads doesn't support destroying recursive mutexes)Jonathan Wakely1-3/+3
PR other/53889 * config/i386/gthr-win32.h (__gthread_recursive_mutex_destroy): Fix parameter names. From-SVN: r192114
2012-10-02re PR other/53889 (Gthreads doesn't support destroying recursive mutexes)Jonathan Wakely1-2/+16
libgcc: PR other/53889 * gthr.h (__gthread_recursive_mutex_destroy): Document new required function. * gthr-posix.h (__gthread_recursive_mutex_destroy): Define. * gthr-single.h (__gthread_recursive_mutex_destroy): Likewise. * config/gthr-rtems.h (__gthread_recursive_mutex_destroy): Likewise. * config/gthr-vxworks.h (__gthread_recursive_mutex_destroy): Likewise. * config/i386/gthr-win32.h (__gthread_recursive_mutex_destroy): Likewise. * config/mips/gthr-mipssde.h (__gthread_recursive_mutex_destroy): Likewise. * config/pa/gthr-dce.h (__gthread_recursive_mutex_destroy): Likewise. * config/s390/gthr-tpf.h (__gthread_recursive_mutex_destroy): Likewise. libstdc++-v3: PR other/53889 * include/std/mutex (__recursive_mutex_base::~__recursive_mutex_base): Use __gthread_recursive_mutex_destroy. (__recursive_mutex_base::_S_destroy): Remove. (__recursive_mutex_base::_S_destroy_win32): Likewise. * include/ext/concurrence.h (__recursive_mutex::~__recursive_mutex): Use __gthread_recursive_mutex_destroy. (__recursive_mutex::_S_destroy): Remove. (__recursive_mutex::_S_destroy_win32): Likewise. From-SVN: r192002
2011-11-02Move gthr to toplevel libgccRainer Orth1-0/+772
gcc: * gthr-single.h, gthr.h: Move to ../libgcc. * gthr-aix.h: Move to ../libgcc/config/rs6000. * gthr-dce.h: Move to ../libgcc/config/pa. * gthr-lynx.h: Move to ../libgcc/config. * gthr-mipssde.h: Move to ../libgcc/config/mips. * gthr-posix.h: Move to ../libgcc/config. * gthr-rtems.h: Likewise. * gthr-tpf.h: Move to ../libgcc/config/s390. * gthr-vxworks.h: Move to ../libgcc/config. * gthr-win32.h: Move to ../libgcc/config/i386. * configure.ac (gthread_flags): Remove (gthr-default.h): Don't create. (thread_file): Don't substitute. * configure: Regenerate. * Makefile.in (GCC_THREAD_FILE): Remove. (GTHREAD_FLAGS): Remove. (libgcc.mvars): Remove GTHREAD_FLAGS. * config/t-vxworks (EXTRA_HEADERS): Remove. gcc/po: * EXCLUDES (gthr-aix.h, gthr-dce.h, gthr-posix.c, gthr-posix.h) (gthr-rtems.h, gthr-single.h, gthr-solaris.h, gthr-vxworks.h) (gthr-win32.h, gthr.h): Remove. libgcc: * gthr-single.h, gthr.h: New files. * config/gthr-lynx.h, config/gthr-posix.h., config/gthr-rtems.h, config/gthr-vxworks.h, config/i386/gthr-win32.h, config/mips/gthr-mipssde.h, config/pa/gthr-dce.h, config/rs6000/gthr-aix.h, config/s390/gthr-tpf.h: New files. * config/i386/gthr-win32.c: Include "gthr-win32.h". * configure.ac (thread_header): New variable. Set it depending on target_thread_file. (gthr-default.h): Link from $thread_header. * configure: Regenerate. * Makefile.in (LIBGCC2_CFLAGS): Remove $(GTHREAD_FLAGS). libgfortran: * Makefile.am (AM_CPPFLAGS): Add -I$(srcdir)/$(MULTISRCTOP)../libgcc, -I$(MULTIBUILDTOP)../libgcc. * Makefile.in: Regenerate. * acinclude.m4 (LIBGFOR_CHECK_GTHR_DEFAULT): Remove. * configure.ac (LIBGFOR_CHECK_GTHR_DEFAULT): Likewise. * configure: Regenerate. * config.h.in: Regenerate. libobjc: * Makefile.in (INCLUDES): Add -I$(MULTIBUILDTOP)../libgcc. * configure.ac (target_thread_file, HAVE_GTHR_DEFAULT): Remove. * configure: Regenerate. * config.h.in: Regenerate. libstdc++-v3: * acinclude.m4 (GLIBCXX_CONFIGURE): Determine and substitute toplevel_builddir. (GLIBCXX_ENABLE_THREADS): Remove glibcxx_thread_h, HAVE_GTHR_DEFAULT, enable_thread. (GLIBCXX_CHECK_GTHREADS): Reflect gthr move to libgcc. * include/Makefile.am (thread_host_headers): Remove ${host_builddir}/gthr-tpf.h. (${host_builddir}/gthr.h): Reflect gthr move to libgcc. Use $<. (${host_builddir}/gthr-single.h): Likewise. (${host_builddir}/gthr-posix.h): Likewise. (${host_builddir}/gthr-tpf.h): Remove. (${host_builddir}/gthr-default.h): Likewise. * configure, config.h.in: Regenerate. * Makefile.in, doc/Makefile.in, include/Makefile.in, libsupc++/Makefile.in, po/Makefile.in, python/Makefile.in, src/Makefile.intestsuite/Makefile.in: Regenerate. From-SVN: r180776
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