mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
5df4cba632
This is mostly to get this commit from gnulib:
e22cd2677a4b7beacbf30b93bb0559f7b89f96ce
Add ‘extern "C"’ to count-one-bits.h etc.
... which fixes this compilation problem I observed with clang++:
CXXLD gdb
arch/arm-get-next-pcs.o:arm-get-next-pcs.c:function thumb_get_next_pcs_raw(arm_get_next_pcs*): error: undefined reference to 'count_one_bits(unsigned int)'
<more such undefined references>
I built-tested on GNU/Linux x86-64 (gcc-9 and clang-9) as well as with the
x86_64-w64-mingw32-gcc cross-compiler.
gnulib/ChangeLog:
* update-gnulib.sh (GNULIB_COMMIT_SHA1): Bump to
e22cd2677a4b7beacbf30b93bb0559f7b89f96ce.
* Makefile.in, config.in, configure, import/*: Re-generate.
96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/* Plain mutexes (native Windows implementation).
|
|
Copyright (C) 2005-2020 Free Software Foundation, Inc.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3, or (at your option)
|
|
any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, see <https://www.gnu.org/licenses/>. */
|
|
|
|
/* Written by Bruno Haible <bruno@clisp.org>, 2005.
|
|
Based on GCC's gthr-win32.h. */
|
|
|
|
#include <config.h>
|
|
|
|
/* Specification. */
|
|
#include "windows-mutex.h"
|
|
|
|
#include <errno.h>
|
|
|
|
void
|
|
glwthread_mutex_init (glwthread_mutex_t *mutex)
|
|
{
|
|
InitializeCriticalSection (&mutex->lock);
|
|
mutex->guard.done = 1;
|
|
}
|
|
|
|
int
|
|
glwthread_mutex_lock (glwthread_mutex_t *mutex)
|
|
{
|
|
if (!mutex->guard.done)
|
|
{
|
|
if (InterlockedIncrement (&mutex->guard.started) == 0)
|
|
/* This thread is the first one to need this mutex. Initialize it. */
|
|
glwthread_mutex_init (mutex);
|
|
else
|
|
{
|
|
/* Don't let mutex->guard.started grow and wrap around. */
|
|
InterlockedDecrement (&mutex->guard.started);
|
|
/* Yield the CPU while waiting for another thread to finish
|
|
initializing this mutex. */
|
|
while (!mutex->guard.done)
|
|
Sleep (0);
|
|
}
|
|
}
|
|
EnterCriticalSection (&mutex->lock);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
glwthread_mutex_trylock (glwthread_mutex_t *mutex)
|
|
{
|
|
if (!mutex->guard.done)
|
|
{
|
|
if (InterlockedIncrement (&mutex->guard.started) == 0)
|
|
/* This thread is the first one to need this mutex. Initialize it. */
|
|
glwthread_mutex_init (mutex);
|
|
else
|
|
{
|
|
/* Don't let mutex->guard.started grow and wrap around. */
|
|
InterlockedDecrement (&mutex->guard.started);
|
|
/* Let another thread finish initializing this mutex, and let it also
|
|
lock this mutex. */
|
|
return EBUSY;
|
|
}
|
|
}
|
|
if (!TryEnterCriticalSection (&mutex->lock))
|
|
return EBUSY;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
glwthread_mutex_unlock (glwthread_mutex_t *mutex)
|
|
{
|
|
if (!mutex->guard.done)
|
|
return EINVAL;
|
|
LeaveCriticalSection (&mutex->lock);
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
glwthread_mutex_destroy (glwthread_mutex_t *mutex)
|
|
{
|
|
if (!mutex->guard.done)
|
|
return EINVAL;
|
|
DeleteCriticalSection (&mutex->lock);
|
|
mutex->guard.done = 0;
|
|
return 0;
|
|
}
|