aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorSteve Ellcey <sje@cup.hp.com>2008-11-13 21:06:38 +0000
committerSteve Ellcey <sje@gcc.gnu.org>2008-11-13 21:06:38 +0000
commit8b159eea9d2652e3fb3fc01cc12579a1d5e62e90 (patch)
tree89a71d1adeefaab1bfae0b5fce498761248fcc13
parent2db56bbc02cebb8fd46a62776ef209f4e945ae18 (diff)
downloadgcc-8b159eea9d2652e3fb3fc01cc12579a1d5e62e90.zip
gcc-8b159eea9d2652e3fb3fc01cc12579a1d5e62e90.tar.gz
gcc-8b159eea9d2652e3fb3fc01cc12579a1d5e62e90.tar.bz2
re PR libgomp/37938 (libgomp testsuite failures on ia64-linux)
PR libgomp/37938 * config/linux/ia64/mutex.h: New. From-SVN: r141830
-rw-r--r--libgomp/ChangeLog5
-rw-r--r--libgomp/config/linux/ia64/mutex.h68
2 files changed, 73 insertions, 0 deletions
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index bc2f3a8..ed7b7a1 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,8 @@
+2008-11-13 Steve Ellcey <sje@cup.hp.com>
+
+ PR libgomp/37938
+ * config/linux/ia64/mutex.h: New.
+
2008-11-04 Tobias Burnus <burnus@net-b.de>
PR libgomp/37935
diff --git a/libgomp/config/linux/ia64/mutex.h b/libgomp/config/linux/ia64/mutex.h
new file mode 100644
index 0000000..b3c954f
--- /dev/null
+++ b/libgomp/config/linux/ia64/mutex.h
@@ -0,0 +1,68 @@
+/* Copyright (C) 2005, 2008 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 a Linux specific implementation of a mutex synchronization
+ mechanism for libgomp. This type is private to the library. This
+ implementation uses atomic instructions and the futex syscall. */
+
+#ifndef GOMP_MUTEX_H
+#define GOMP_MUTEX_H 1
+
+typedef int gomp_mutex_t;
+
+#define GOMP_MUTEX_INIT_0 1
+
+static inline void gomp_mutex_init (gomp_mutex_t *mutex)
+{
+ *mutex = 0;
+}
+
+extern void gomp_mutex_lock_slow (gomp_mutex_t *mutex);
+static inline void gomp_mutex_lock (gomp_mutex_t *mutex)
+{
+ if (!__sync_bool_compare_and_swap (mutex, 0, 1))
+ gomp_mutex_lock_slow (mutex);
+}
+
+extern void gomp_mutex_unlock_slow (gomp_mutex_t *mutex);
+
+/* IA64 needs a __sync_synchronize call before __sync_lock_test_and_set
+ because __sync_lock_test_and_set is not a full memory fence. */
+static inline void gomp_mutex_unlock (gomp_mutex_t *mutex)
+{
+ int val;
+ __sync_synchronize ();
+ val = __sync_lock_test_and_set (mutex, 0);
+ if (__builtin_expect (val > 1, 0))
+ gomp_mutex_unlock_slow (mutex);
+}
+
+static inline void gomp_mutex_destroy (gomp_mutex_t *mutex)
+{
+}
+
+#endif /* GOMP_MUTEX_H */