From 7319ab9a594525085aa55ec87fae30fa9bd8984f Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sun, 28 Aug 2005 18:26:01 +0000
Subject: [PATCH] Add a SYNC instruction to the S_UNLOCK sequence for MIPS.
---
src/include/storage/s_lock.h | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/src/include/storage/s_lock.h b/src/include/storage/s_lock.h
index 75b15a334e2..b4e2ab202e5 100644
--- a/src/include/storage/s_lock.h
+++ b/src/include/storage/s_lock.h
@@ -66,7 +66,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.138 2005/08/27 16:22:48 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/storage/s_lock.h,v 1.139 2005/08/28 18:26:01 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -487,6 +487,14 @@ tas(volatile slock_t *lock)
return _res;
}
+/* MIPS S_UNLOCK is almost standard but requires a "sync" instruction */
+#define S_UNLOCK(lock) \
+do \
+{\
+ __asm__ __volatile__ (" sync \n"); \
+ *((volatile slock_t *) (lock)) = 0; \
+} while (0)
+
#endif /* __mips__ && !__sgi */
--
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