[Libreoffice] [REVIEW] prefer gcc __sync functions over pthread

Hi all,

please review the attached patch which applies an important and safe
subset of the changes to sal/osl/unx/interlck.c on master to 3.3.2,
mostly:

 http://cgit.freedesktop.org/libreoffice/ure/commit/?id=788072cefdce8cb61d46549a7aede4c754d9fae3

So the commit should have "Jani Monoses <jani.monoses@canonical.com>"
as author.

Best Regards,

Bjoern

-- 
https://launchpad.net/~bjoern-michaelsen

diff --git a/sal/osl/unx/interlck.c b/sal/osl/unx/interlck.c
index f164371..184cb5f 100644
--- a/sal/osl/unx/interlck.c
+++ b/sal/osl/unx/interlck.c
@@ -134,7 +134,16 @@ oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount*
 
     return nCount;
 }
+#elif ( __GNUC__ > 4 ) || (( __GNUC__ == 4) && ( __GNUC_MINOR__ >= 4 ))
+oslInterlockedCount SAL_CALL osl_incrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    return __sync_add_and_fetch(pCount, 1);
+}
 
+oslInterlockedCount SAL_CALL osl_decrementInterlockedCount(oslInterlockedCount* pCount)
+{
+    return __sync_sub_and_fetch(pCount, 1);
+}
 #else
 /* use only if nothing else works, expensive due to single mutex for all reference counts */

Attachment: signature.asc
Description: PGP signature