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5abebf3c3f
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
74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/* Multithreading primitives.
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Copyright (C) 2005-2016 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>. */
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/* Written by Bruno Haible <bruno@clisp.org>, 2005. */
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#include <config.h>
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/* ========================================================================= */
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#if USE_POSIX_THREADS
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/* Use the POSIX threads library. */
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# include <pthread.h>
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# include <stdlib.h>
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# if PTHREAD_IN_USE_DETECTION_HARD
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/* The function to be executed by a dummy thread. */
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static void *
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dummy_thread_func (void *arg)
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{
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return arg;
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}
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int
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glthread_in_use (void)
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{
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static int tested;
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static int result; /* 1: linked with -lpthread, 0: only with libc */
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if (!tested)
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{
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pthread_t thread;
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if (pthread_create (&thread, NULL, dummy_thread_func, NULL) != 0)
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/* Thread creation failed. */
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result = 0;
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else
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{
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/* Thread creation works. */
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void *retval;
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if (pthread_join (thread, &retval) != 0)
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abort ();
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result = 1;
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}
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tested = 1;
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}
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return result;
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}
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# endif
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#endif
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/* ========================================================================= */
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/* This declaration is solely to ensure that after preprocessing
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this file is never empty. */
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typedef int dummy;
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