1 files changed, 126 insertions, 0 deletions
diff --git a/gcc-4.2.1-5666.3/libgomp/config/posix/sem.c b/gcc-4.2.1-5666.3/libgomp/config/posix/sem.c
new file mode 100644
index 000000000..b44cb5d16
--- /dev/null
+++ b/gcc-4.2.1-5666.3/libgomp/config/posix/sem.c
@@ -0,0 +1,126 @@
+/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   Contributed by Richard Henderson <rth@redhat.com>.
+
+   This file is part of the GNU OpenMP Library (libgomp).
+
+   Libgomp is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Lesser General Public License as published by
+   the Free Software Foundation; either version 2.1 of the License, or
+   (at your option) any later version.
+
+   Libgomp 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 Lesser General Public License for
+   more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with libgomp; see the file COPYING.LIB.  If not, write to the
+   Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+/* As a special exception, if you link this library with other files, some
+   of which are compiled with GCC, to produce an executable, this library
+   does not by itself cause the resulting executable to be covered by the
+   GNU General Public License.  This exception does not however invalidate
+   any other reasons why the executable file might be covered by the GNU
+   General Public License.  */
+
+/* This is the default POSIX 1003.1b implementation of a semaphore
+   synchronization mechanism for libgomp.  This type is private to
+   the library.
+
+   This is a bit heavy weight for what we need, in that we're not
+   interested in sem_wait as a cancelation point, but it's not too
+   bad for a default.  */
+
+#include "libgomp.h"
+
+#ifdef HAVE_BROKEN_POSIX_SEMAPHORES
+#include <stdlib.h>
+
+void gomp_sem_init (gomp_sem_t *sem, int value)
+{
+  int ret;
+
+  ret = pthread_mutex_init (&sem->mutex, NULL);
+  if (ret)
+    return;
+
+  ret = pthread_cond_init (&sem->cond, NULL);
+  if (ret)
+    return;
+
+  sem->value = value;
+}
+
+void gomp_sem_wait (gomp_sem_t *sem)
+{
+  int ret;
+
+  ret = pthread_mutex_lock (&sem->mutex);
+  if (ret)
+    return;
+
+  if (sem->value > 0)
+    {
+      sem->value--;
+      ret = pthread_mutex_unlock (&sem->mutex);
+      return;
+    }
+
+  while (sem->value <= 0)
+    {
+      ret = pthread_cond_wait (&sem->cond, &sem->mutex);
+      if (ret)
+	{
+	  pthread_mutex_unlock (&sem->mutex);
+	  return;
+	}
+    }
+
+  sem->value--;
+  ret = pthread_mutex_unlock (&sem->mutex);
+  return;
+}
+
+void gomp_sem_post (gomp_sem_t *sem)
+{
+  int ret;
+
+  ret = pthread_mutex_lock (&sem->mutex);
+  if (ret)
+    return;
+
+  sem->value++;
+
+  ret = pthread_mutex_unlock (&sem->mutex);
+  if (ret)
+    return;
+
+  ret = pthread_cond_signal (&sem->cond);
+
+  return;
+}
+
+void gomp_sem_destroy (gomp_sem_t *sem)
+{
+  int ret;
+
+  ret = pthread_mutex_destroy (&sem->mutex);
+  if (ret)
+    return;
+
+  ret = pthread_cond_destroy (&sem->cond);
+
+  return;
+}
+#else /* HAVE_BROKEN_POSIX_SEMAPHORES  */
+void
+gomp_sem_wait (gomp_sem_t *sem)
+{
+  /* With POSIX, the wait can be canceled by signals.  We don't want that.
+     It is expected that the return value here is -1 and errno is EINTR.  */
+  while (sem_wait (sem) != 0)
+    continue;
+}
+#endif