Mercurial > hg > octave-nkf > gnulib-hg
view lib/glthread/threadlib.c @ 14079:97fc9a21a8fb
maint: update almost all copyright ranges to include 2011
Run the new "make update-copyright" rule.
author | Jim Meyering <meyering@redhat.com> |
---|---|
date | Sat, 01 Jan 2011 20:17:23 +0100 (2011-01-01) |
parents | c2cbabec01dd |
children | 8250f2777afc |
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/* Multithreading primitives. Copyright (C) 2005-2011 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 2, 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, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ /* 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;