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Minor bug fix and cleanup from self-review of sync rep queues patch.

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This commit is contained in:
Simon Riggs
2012-01-30 14:36:17 +00:00
parent 73f617f13f
commit ba1868ba31
3 changed files with 8 additions and 10 deletions
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10
src/backend/replication/syncrep.c
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@@ -62,9 +62,6 @@ char *SyncRepStandbyNames;
#define SyncStandbysDefined() \
(SyncRepStandbyNames != NULL && SyncRepStandbyNames[0] != '\0')
#define SyncRepRequested() \
(max_wal_senders > 0 && synchronous_commit > SYNCHRONOUS_COMMIT_LOCAL_FLUSH)
static bool announce_next_takeover = true;
static int SyncRepWaitMode = SYNC_REP_NO_WAIT;
@@ -98,6 +95,7 @@ SyncRepWaitForLSN(XLogRecPtr XactCommitLSN)
{
char *new_status = NULL;
const char *old_status;
int mode = SyncRepWaitMode;
/*
* Fast exit if user has not requested sync replication, or there are no
@@ -122,7 +120,7 @@ SyncRepWaitForLSN(XLogRecPtr XactCommitLSN)
* be a low cost check.
*/
if (!WalSndCtl->sync_standbys_defined ||
XLByteLE(XactCommitLSN, WalSndCtl->lsn[SyncRepWaitMode]))
XLByteLE(XactCommitLSN, WalSndCtl->lsn[mode]))
{
LWLockRelease(SyncRepLock);
return;
@@ -134,8 +132,8 @@ SyncRepWaitForLSN(XLogRecPtr XactCommitLSN)
*/
MyProc->waitLSN = XactCommitLSN;
MyProc->syncRepState = SYNC_REP_WAITING;
SyncRepQueueInsert(SyncRepWaitMode);
Assert(SyncRepQueueIsOrderedByLSN(SyncRepWaitMode));
SyncRepQueueInsert(mode);
Assert(SyncRepQueueIsOrderedByLSN(mode));
LWLockRelease(SyncRepLock);
/* Alter ps display to show waiting for sync rep. */