/*
* AtCommit_LocalCache
*/
static void
AtCommit_LocalCache(void)
{
/*
* Make catalog changes visible to me for the next command.
*/
CommandEndInvalidationMessages(true);
}
/*
* AtEOSubXact_Inval
* Process queued-up invalidation messages at end of subtransaction.
*
* If isCommit, process CurrentCmdInvalidMsgs if any (there probably aren't),
* and then attach both CurrentCmdInvalidMsgs and PriorCmdInvalidMsgs to the
* parent's PriorCmdInvalidMsgs list.
*
* If not isCommit, we are aborting, and must locally process the messages
* in PriorCmdInvalidMsgs. No messages need be sent to other backends.
* We can forget about CurrentCmdInvalidMsgs too, since those changes haven't
* touched the caches yet.
*
* In any case, pop the transaction stack. We need not physically free memory
* here, since CurTransactionContext is about to be emptied anyway
* (if aborting). Beware of the possibility of aborting the same nesting
* level twice, though.
*/
void
AtEOSubXact_Inval(bool isCommit)
{
int my_level = GetCurrentTransactionNestLevel();
TransInvalidationInfo *myInfo = transInvalInfo;
if (isCommit)
{
/* Must be at non-top of stack */
Assert(myInfo != NULL && myInfo->parent != NULL);
Assert(myInfo->my_level == my_level);
/* If CurrentCmdInvalidMsgs still has anything, fix it */
CommandEndInvalidationMessages();
/* Pass up my inval messages to parent */
AppendInvalidationMessages(&myInfo->parent->PriorCmdInvalidMsgs,
&myInfo->PriorCmdInvalidMsgs);
/* Pending relcache inval becomes parent's problem too */
if (myInfo->RelcacheInitFileInval)
myInfo->parent->RelcacheInitFileInval = true;
/* Pop the transaction state stack */
transInvalInfo = myInfo->parent;
/* Need not free anything else explicitly */
pfree(myInfo);
}
else if (myInfo != NULL && myInfo->my_level == my_level)
{
/* Must be at non-top of stack */
Assert(myInfo->parent != NULL);
ProcessInvalidationMessages(&myInfo->PriorCmdInvalidMsgs,
LocalExecuteInvalidationMessage);
/* Pop the transaction state stack */
transInvalInfo = myInfo->parent;
/* Need not free anything else explicitly */
pfree(myInfo);
}
}
/*
* AtEOSubXact_Inval
* Process queued-up invalidation messages at end of subtransaction.
*
* If isCommit, process CurrentCmdInvalidMsgs if any (there probably aren't),
* and then attach both CurrentCmdInvalidMsgs and PriorCmdInvalidMsgs to the
* parent's PriorCmdInvalidMsgs list.
*
* If not isCommit, we are aborting, and must locally process the messages
* in PriorCmdInvalidMsgs. No messages need be sent to other backends.
* We can forget about CurrentCmdInvalidMsgs too, since those changes haven't
* touched the caches yet.
*
* In any case, pop the transaction stack. We need not physically free memory
* here, since CurTransactionContext is about to be emptied anyway
* (if aborting). Beware of the possibility of aborting the same nesting
* level twice, though.
*/
void
AtEOSubXact_Inval(bool isCommit)
{
int my_level;
TransInvalidationInfo *myInfo = transInvalInfo;
/* Quick exit if no messages. */
if (myInfo == NULL)
return;
/* Also bail out quickly if messages are not for this level. */
my_level = GetCurrentTransactionNestLevel();
if (myInfo->my_level != my_level)
{
Assert(myInfo->my_level < my_level);
return;
}
if (isCommit)
{
/* If CurrentCmdInvalidMsgs still has anything, fix it */
CommandEndInvalidationMessages();
/*
* We create invalidation stack entries lazily, so the parent might
* not have one. Instead of creating one, moving all the data over,
* and then freeing our own, we can just adjust the level of our own
* entry.
*/
if (myInfo->parent == NULL || myInfo->parent->my_level < my_level - 1)
{
myInfo->my_level--;
return;
}
/* Pass up my inval messages to parent */
AppendInvalidationMessages(&myInfo->parent->PriorCmdInvalidMsgs,
&myInfo->PriorCmdInvalidMsgs);
/* Pending relcache inval becomes parent's problem too */
if (myInfo->RelcacheInitFileInval)
myInfo->parent->RelcacheInitFileInval = true;
/* Pop the transaction state stack */
transInvalInfo = myInfo->parent;
/* Need not free anything else explicitly */
pfree(myInfo);
}
else
{
ProcessInvalidationMessages(&myInfo->PriorCmdInvalidMsgs,
LocalExecuteInvalidationMessage);
/* Pop the transaction state stack */
transInvalInfo = myInfo->parent;
/* Need not free anything else explicitly */
pfree(myInfo);
}
}
