binutils-gdb/gnulib/import/glthread/threadlib.c
Christian Biesinger 5abebf3c3f Import the strerror_r-posix module and use it in GDB.
Makes sure to assign the return value of strerror_r to an int,
so that we get a compile error if we accidentally get the
wrong version.

gdb/ChangeLog:

2019-11-15  Christian Biesinger  <cbiesinger@google.com>

	* config.in: Regenerate.
	* configure: Regenerate.
	* gdbsupport/common.m4: No longer check for strerror_r.
	* gdbsupport/posix-strerror.c (safe_strerror): Always call the
	POSIX version of strerror_r, now that gnulib provides it if
	necessary.

gdb/gdbserver/ChangeLog:

2019-11-15  Christian Biesinger  <cbiesinger@google.com>

	* config.in: Regenerate.
	* configure: Regenerate.

gnulib/ChangeLog:

2019-11-15  Christian Biesinger  <cbiesinger@google.com>

	* Makefile.in: Regenerate.
	* aclocal.m4: Regenerate.
	* config.in: Regenerate.
	* configure: Regenerate.
	* import/Makefile.am: Update.
	* import/Makefile.in: Regenerate.
	* import/extra/config.rpath: New file.
	* import/glthread/lock.c: New file.
	* import/glthread/lock.h: New file.
	* import/glthread/threadlib.c: New file.
	* import/m4/gnulib-cache.m4: Update.
	* import/m4/gnulib-comp.m4: Update.
	* import/m4/lib-ld.m4: New file.
	* import/m4/lib-link.m4: New file.
	* import/m4/lib-prefix.m4: New file.
	* import/m4/lock.m4: New file.
	* import/m4/strerror_r.m4: New file.
	* import/m4/threadlib.m4: New file.
	* import/strerror_r.c: New file.
	* update-gnulib.sh: Import strerror_r-posix.

Change-Id: I5cfeb12a5203a4cd94a78581541e6085a68685c3
2019-11-15 11:12:24 -08:00

74 lines
1.8 KiB
C

/* Multithreading primitives.
Copyright (C) 2005-2016 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 <http://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
#include <config.h>
/* ========================================================================= */
#if USE_POSIX_THREADS
/* Use the POSIX threads library. */
# include <pthread.h>
# include <stdlib.h>
# if PTHREAD_IN_USE_DETECTION_HARD
/* The function to be executed by a dummy thread. */
static void *
dummy_thread_func (void *arg)
{
return arg;
}
int
glthread_in_use (void)
{
static int tested;
static int result; /* 1: linked with -lpthread, 0: only with libc */
if (!tested)
{
pthread_t thread;
if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
/* Thread creation failed. */
result = 0;
else
{
/* Thread creation works. */
void *retval;
if (pthread_join (thread, &retval) != 0)
abort ();
result = 1;
}
tested = 1;
}
return result;
}
# endif
#endif
/* ========================================================================= */
/* This declaration is solely to ensure that after preprocessing
this file is never empty. */
typedef int dummy;