/*
* MarkAsPrepared
* Mark the GXACT as fully valid, and enter it into the global ProcArray.
*/
static void
MarkAsPrepared(GlobalTransaction gxact)
{
/* Lock here may be overkill, but I'm not convinced of that ... */
LWLockAcquire(TwoPhaseStateLock, LW_EXCLUSIVE);
Assert(!gxact->valid);
gxact->valid = true;
LWLockRelease(TwoPhaseStateLock);
/*
* Put it into the global ProcArray so TransactionIdIsInProgress considers
* the XID as still running.
*/
ProcArrayAdd(&gxact->proc);
}
/*
* InitProcessPhase2 -- make MyProc visible in the shared ProcArray.
*
* This is separate from InitProcess because we can't acquire LWLocks until
* we've created a PGPROC, but in the EXEC_BACKEND case ProcArrayAdd won't
* work until after we've done CreateSharedMemoryAndSemaphores.
*/
void
InitProcessPhase2(void)
{
Assert(MyProc != NULL);
/*
* Add our PGPROC to the PGPROC array in shared memory.
*/
ProcArrayAdd(MyProc);
/*
* Arrange to clean that up at backend exit.
*/
on_shmem_exit(RemoveProcFromArray, 0);
}
/*
* InitProcessPhase2 -- make MyProc visible in the shared ProcArray.
*
* This is separate from InitProcess because we can't acquire LWLocks until
* we've created a PGPROC, but in the EXEC_BACKEND case there is a good deal
* of stuff to be done before this step that will require LWLock access.
*/
void
InitProcessPhase2(void)
{
Assert(MyProc != NULL);
/*
* We should now know what database we're in, so advertise that. (We need
* not do any locking here, since no other backend can yet see our
* PGPROC.)
*/
Assert(OidIsValid(MyDatabaseId));
MyProc->databaseId = MyDatabaseId;
/*
* Add our PGPROC to the PGPROC array in shared memory.
*/
ProcArrayAdd(MyProc);
/*
* Arrange to clean that up at backend exit.
*/
on_shmem_exit(RemoveProcFromArray, 0);
}
