diff options
Diffstat (limited to 'src/backend/storage/lmgr/s_lock.c')
| -rw-r--r-- | src/backend/storage/lmgr/s_lock.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/backend/storage/lmgr/s_lock.c b/src/backend/storage/lmgr/s_lock.c index 3d1f2a616e8..0d30203a5f3 100644 --- a/src/backend/storage/lmgr/s_lock.c +++ b/src/backend/storage/lmgr/s_lock.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/s_lock.c,v 1.8 2002/06/20 20:29:35 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/storage/lmgr/s_lock.c,v 1.9 2002/09/21 00:14:05 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -115,6 +115,9 @@ _success: \n\ /* used in darwin. */ /* We key off __APPLE__ here because this function differs from * the LinuxPPC implementation only in compiler syntax. + * + * NOTE: per the Enhanced PowerPC Architecture manual, v1.0 dated 7-May-2002, + * an isync is a sufficient synchronization barrier after a lwarx/stwcx loop. */ static void tas_dummy() @@ -134,6 +137,7 @@ tas: \n\ fail: li r3,1 \n\ blr \n\ success: \n\ + isync \n\ li r3,0 \n\ blr \n\ "); @@ -158,6 +162,7 @@ tas: \n\ fail: li 3,1 \n\ blr \n\ success: \n\ + isync \n\ li 3,0 \n\ blr \n\ "); |