2012-02-10 Benjamin Kosnik <bkoz@redhat.com>

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / include / profile / impl / profiler_state.h

diff --git a/libstdc++-v3/include/profile/impl/profiler_state.h b/libstdc++-v3/include/profile/impl/profiler_state.h
index 111b97e..573aa0e 100644 (file)
--- a/libstdc++-v3/include/profile/impl/profiler_state.h
+++ b/libstdc++-v3/include/profile/impl/profiler_state.h
@@ -1,6 +1,6 @@
 // -*- C++ -*-
 //
-// Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+// Copyright (C) 2009, 2010, 2012 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the terms
@@ -45,9 +45,12 @@ namespace __gnu_profile
 
   inline bool
   __turn(__state_type __s)
-  { return (_GLIBCXX_PROFILE_DATA(__state)
-           == __sync_val_compare_and_swap(&_GLIBCXX_PROFILE_DATA(__state),
-                                          __INVALID, __s)); }
+  { 
+    __state_type inv(__INVALID);
+    return __atomic_compare_exchange_n(&_GLIBCXX_PROFILE_DATA(__state),
+                                      &inv, __s, true, __ATOMIC_ACQ_REL, 
+                                      __ATOMIC_RELAXED);
+  }
 
   inline bool
   __turn_on()