OTP-8659 Add ethread support for gcc atomics

Support for using gcc's built-in functions for atomic memory access has
been added. This functionallity will be used if available and no other
native atomic implementation in ERTS is available.

1 files changed, 11 insertions, 5 deletions

diff --git a/erts/include/internal/ethread_header_config.h.in b/erts/include/internal/ethread_header_config.h.in
index e5b4946a53..cf25ad3f55 100644
--- a/erts/include/internal/ethread_header_config.h.in
+++ b/erts/include/internal/ethread_header_config.h.in
@@ -1,19 +1,19 @@
 /*
  * %CopyrightBegin%
- * 
- * Copyright Ericsson AB 2004-2009. All Rights Reserved.
- * 
+ *
+ * Copyright Ericsson AB 2004-2010. All Rights Reserved.
+ *
  * The contents of this file are subject to the Erlang Public License,
  * Version 1.1, (the "License"); you may not use this file except in
  * compliance with the License. You should have received a copy of the
  * Erlang Public License along with this software. If not, it can be
  * retrieved online at http://www.erlang.org/.
- * 
+ *
  * Software distributed under the License is distributed on an "AS IS"
  * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
  * the License for the specific language governing rights and limitations
  * under the License.
- * 
+ *
  * %CopyrightEnd%
  */
 
@@ -50,6 +50,12 @@
 /* Define if you have a pthread_rwlock implementation that can be used */
 #undef ETHR_HAVE_PTHREAD_RWLOCK_INIT
 
+/* Define if you have gcc atomic operations */
+#undef ETHR_HAVE_GCC_ATOMIC_OPS
+
+/* Define if you prefer gcc native ethread implementations */
+#undef ETHR_PREFER_GCC_NATIVE_IMPLS
+
 /* Define if you want to turn on extra sanity checking in the ethread library */
 #undef ETHR_XCHK