PR libgomp/29494

	* configure.tgt: Use posix95 configuration for Solaris 2.5.1 and 2.6.
	* config/posix95: New directory.
	* config/posix95/omp-lock.h: New file.
	* config/posix95/lock.c: Likewise.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@118004 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 148 insertions, 0 deletions

diff --git a/libgomp/config/posix95/lock.c b/libgomp/config/posix95/lock.c
new file mode 100644
index 00000000000..2416f1131c7
--- /dev/null
+++ b/libgomp/config/posix95/lock.c
@@ -0,0 +1,131 @@
+/* Copyright (C) 2006 Free Software Foundation, Inc.
+
+   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 POSIX95 implementation of the public OpenMP locking primitives.
+
+   Because OpenMP uses different entry points for normal and recursive
+   locks, and pthreads uses only one entry point, a system may be able
+   to do better and streamline the locking as well as reduce the size
+   of the types exported.  */
+
+#include "libgomp.h"
+
+
+void
+omp_init_lock (omp_lock_t *lock)
+{
+  pthread_mutex_init (lock, NULL);
+}
+
+void
+omp_destroy_lock (omp_lock_t *lock)
+{
+  pthread_mutex_destroy (lock);
+}
+
+void
+omp_set_lock (omp_lock_t *lock)
+{
+  pthread_mutex_lock (lock);
+}
+
+void
+omp_unset_lock (omp_lock_t *lock)
+{
+  pthread_mutex_unlock (lock);
+}
+
+int
+omp_test_lock (omp_lock_t *lock)
+{
+  return pthread_mutex_trylock (lock) == 0;
+}
+
+void
+omp_init_nest_lock (omp_nest_lock_t *lock)
+{
+  pthread_mutex_init (&lock->lock, NULL);
+  lock->owner = (pthread_t) 0;
+  lock->count = 0;
+}
+
+void
+omp_destroy_nest_lock (omp_nest_lock_t *lock)
+{
+  pthread_mutex_destroy (&lock->lock);
+}
+
+void
+omp_set_nest_lock (omp_nest_lock_t *lock)
+{
+  pthread_t me = pthread_self ();
+
+  if (lock->owner != me)
+    {
+      pthread_mutex_lock (&lock->lock);
+      lock->owner = me;
+    }
+
+  lock->count++;
+}
+
+void
+omp_unset_nest_lock (omp_nest_lock_t *lock)
+{
+  lock->count--;
+
+  if (lock->count == 0)
+    {
+      lock->owner = (pthread_t) 0;
+      pthread_mutex_unlock (&lock->lock);
+    }
+}
+
+int
+omp_test_nest_lock (omp_nest_lock_t *lock)
+{
+  pthread_t me = pthread_self ();
+
+  if (lock->owner != me)
+    {
+      if (pthread_mutex_trylock (&lock->lock) != 0)
+	return 0;
+      lock->owner = me;
+    }
+
+  return ++lock->count;
+}
+
+ialias (omp_init_lock)
+ialias (omp_init_nest_lock)
+ialias (omp_destroy_lock)
+ialias (omp_destroy_nest_lock)
+ialias (omp_set_lock)
+ialias (omp_set_nest_lock)
+ialias (omp_unset_lock)
+ialias (omp_unset_nest_lock)
+ialias (omp_test_lock)
+ialias (omp_test_nest_lock)
diff --git a/libgomp/config/posix95/omp-lock.h b/libgomp/config/posix95/omp-lock.h
new file mode 100644
index 00000000000..c446aec01e5
--- /dev/null
+++ b/libgomp/config/posix95/omp-lock.h
@@ -0,0 +1,17 @@
+/* This header is used during the build process to find the size and 
+   alignment of the public OpenMP locks, so that we can export data
+   structures without polluting the namespace.
+
+   In this POSIX95 implementation, we map the two locks to the
+   same PTHREADS primitive.  */
+
+#include <pthread.h>
+
+typedef pthread_mutex_t omp_lock_t;
+
+typedef struct
+{
+  pthread_mutex_t lock;
+  pthread_t owner;
+  int count;
+} omp_nest_lock_t;