* initialized by InitProcGlobal.
*/
SHMQueueElemInit(&(MyProc->links));
- MyProc->waitStatus = STATUS_OK;
+ MyProc->waitStatus = PROC_WAIT_STATUS_OK;
MyProc->lxid = InvalidLocalTransactionId;
MyProc->fpVXIDLock = false;
MyProc->fpLocalTransactionId = InvalidLocalTransactionId;
* initialized by InitProcGlobal.
*/
SHMQueueElemInit(&(MyProc->links));
- MyProc->waitStatus = STATUS_OK;
+ MyProc->waitStatus = PROC_WAIT_STATUS_OK;
MyProc->lxid = InvalidLocalTransactionId;
MyProc->fpVXIDLock = false;
MyProc->fpLocalTransactionId = InvalidLocalTransactionId;
* did grant us the lock, we'd better remember it in our local lock
* table.
*/
- if (MyProc->waitStatus == STATUS_OK)
+ if (MyProc->waitStatus == PROC_WAIT_STATUS_OK)
GrantAwaitedLock();
}
* The lock table's partition lock must be held at entry, and will be held
* at exit.
*
- * Result: STATUS_OK if we acquired the lock, STATUS_ERROR if not (deadlock).
+ * Result: PROC_WAIT_STATUS_OK if we acquired the lock, PROC_WAIT_STATUS_ERROR if not (deadlock).
*
* ASSUME: that no one will fiddle with the queue until after
* we release the partition lock.
*
* NOTES: The process queue is now a priority queue for locking.
*/
-int
+ProcWaitStatus
ProcSleep(LOCALLOCK *locallock, LockMethod lockMethodTable)
{
LOCKMODE lockmode = locallock->tag.mode;
LOCKMASK myHeldLocks = MyProc->heldLocks;
bool early_deadlock = false;
bool allow_autovacuum_cancel = true;
- int myWaitStatus;
+ ProcWaitStatus myWaitStatus;
PGPROC *proc;
PGPROC *leader = MyProc->lockGroupLeader;
int i;
/* Skip the wait and just grant myself the lock. */
GrantLock(lock, proclock, lockmode);
GrantAwaitedLock();
- return STATUS_OK;
+ return PROC_WAIT_STATUS_OK;
}
/* Break out of loop to put myself before him */
break;
MyProc->waitProcLock = proclock;
MyProc->waitLockMode = lockmode;
- MyProc->waitStatus = STATUS_WAITING;
+ MyProc->waitStatus = PROC_WAIT_STATUS_WAITING;
/*
* If we detected deadlock, give up without waiting. This must agree with
if (early_deadlock)
{
RemoveFromWaitQueue(MyProc, hashcode);
- return STATUS_ERROR;
+ return PROC_WAIT_STATUS_ERROR;
}
/* mark that we are waiting for a lock */
/*
* Set timer so we can wake up after awhile and check for a deadlock. If a
* deadlock is detected, the handler sets MyProc->waitStatus =
- * STATUS_ERROR, allowing us to know that we must report failure rather
+ * PROC_WAIT_STATUS_ERROR, allowing us to know that we must report failure rather
* than success.
*
* By delaying the check until we've waited for a bit, we can avoid
}
/*
- * waitStatus could change from STATUS_WAITING to something else
+ * waitStatus could change from PROC_WAIT_STATUS_WAITING to something else
* asynchronously. Read it just once per loop to prevent surprising
* behavior (such as missing log messages).
*/
- myWaitStatus = *((volatile int *) &MyProc->waitStatus);
+ myWaitStatus = *((volatile ProcWaitStatus *) &MyProc->waitStatus);
/*
* If we are not deadlocked, but are waiting on an autovacuum-induced
lockHoldersNum, lock_holders_sbuf.data, lock_waiters_sbuf.data))));
}
- if (myWaitStatus == STATUS_WAITING)
+ if (myWaitStatus == PROC_WAIT_STATUS_WAITING)
ereport(LOG,
(errmsg("process %d still waiting for %s on %s after %ld.%03d ms",
MyProcPid, modename, buf.data, msecs, usecs),
(errdetail_log_plural("Process holding the lock: %s. Wait queue: %s.",
"Processes holding the lock: %s. Wait queue: %s.",
lockHoldersNum, lock_holders_sbuf.data, lock_waiters_sbuf.data))));
- else if (myWaitStatus == STATUS_OK)
+ else if (myWaitStatus == PROC_WAIT_STATUS_OK)
ereport(LOG,
(errmsg("process %d acquired %s on %s after %ld.%03d ms",
MyProcPid, modename, buf.data, msecs, usecs)));
else
{
- Assert(myWaitStatus == STATUS_ERROR);
+ Assert(myWaitStatus == PROC_WAIT_STATUS_ERROR);
/*
* Currently, the deadlock checker always kicks its own
- * process, which means that we'll only see STATUS_ERROR when
+ * process, which means that we'll only see PROC_WAIT_STATUS_ERROR when
* deadlock_state == DS_HARD_DEADLOCK, and there's no need to
* print redundant messages. But for completeness and
* future-proofing, print a message if it looks like someone
pfree(lock_holders_sbuf.data);
pfree(lock_waiters_sbuf.data);
}
- } while (myWaitStatus == STATUS_WAITING);
+ } while (myWaitStatus == PROC_WAIT_STATUS_WAITING);
/*
* Disable the timers, if they are still running. As in LockErrorCleanup,
/*
* If we got the lock, be sure to remember it in the locallock table.
*/
- if (MyProc->waitStatus == STATUS_OK)
+ if (MyProc->waitStatus == PROC_WAIT_STATUS_OK)
GrantAwaitedLock();
/*
* XXX: presently, this code is only used for the "success" case, and only
* works correctly for that case. To clean up in failure case, would need
* to twiddle the lock's request counts too --- see RemoveFromWaitQueue.
- * Hence, in practice the waitStatus parameter must be STATUS_OK.
+ * Hence, in practice the waitStatus parameter must be PROC_WAIT_STATUS_OK.
*/
PGPROC *
-ProcWakeup(PGPROC *proc, int waitStatus)
+ProcWakeup(PGPROC *proc, ProcWaitStatus waitStatus)
{
PGPROC *retProc;
if (proc->links.prev == NULL ||
proc->links.next == NULL)
return NULL;
- Assert(proc->waitStatus == STATUS_WAITING);
+ Assert(proc->waitStatus == PROC_WAIT_STATUS_WAITING);
/* Save next process before we zap the list link */
retProc = (PGPROC *) proc->links.next;
{
/* OK to waken */
GrantLock(lock, proc->waitProcLock, lockmode);
- proc = ProcWakeup(proc, STATUS_OK);
+ proc = ProcWakeup(proc, PROC_WAIT_STATUS_OK);
/*
* ProcWakeup removes proc from the lock's waiting process queue
* preserve the flexibility to kill some other transaction than the
* one detecting the deadlock.)
*
- * RemoveFromWaitQueue sets MyProc->waitStatus to STATUS_ERROR, so
+ * RemoveFromWaitQueue sets MyProc->waitStatus to PROC_WAIT_STATUS_ERROR, so
* ProcSleep will report an error after we return from the signal
* handler.
*/
projects / users / gsingh / postgres.git / commitdiff