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Refactor inCommit flag into generic delayChkpt flag.

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Rename PGXACT->inCommit flag into delayChkpt flag,
and generalise comments to allow use in other situations,
such as the forthcoming potential use in checksum patch.
Replace wait loop to look for VXIDs with delayChkpt set.
No user visible changes, not behaviour changes at present.

Simon Riggs, reviewed and rebased by Jeff Davis
This commit is contained in:
Simon Riggs
2012-12-03 13:13:53 +00:00
parent 7a764990d8
commit f21bb9cfb5
7 changed files with 89 additions and 73 deletions
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8
src/backend/access/transam/xact.c
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@ -1001,13 +1001,13 @@ RecordTransactionCommit(void)
* RecordTransactionAbort. That's because loss of a transaction abort
* is noncritical; the presumption would be that it aborted, anyway.
*
* It's safe to change the inCommit flag of our own backend without
* It's safe to change the delayChkpt flag of our own backend without
* holding the ProcArrayLock, since we're the only one modifying it.
* This makes checkpoint's determination of which xacts are inCommit a
* This makes checkpoint's determination of which xacts are delayChkpt a
* bit fuzzy, but it doesn't matter.
*/
START_CRIT_SECTION();
MyPgXact->inCommit = true;
MyPgXact->delayChkpt = true;
SetCurrentTransactionStopTimestamp();
@ -1160,7 +1160,7 @@ RecordTransactionCommit(void)
*/
if (markXidCommitted)
{
MyPgXact->inCommit = false;
MyPgXact->delayChkpt = false;
END_CRIT_SECTION();
}