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| author | Teodor Sigaev <teodor@sigaev.ru> | 2018-05-03 20:08:29 +0300 |
|---|---|---|
| committer | Teodor Sigaev <teodor@sigaev.ru> | 2018-05-03 20:08:29 +0300 |
| commit | 8f9be261f43772ccee2eae94d971bac6557cbe6a (patch) | |
| tree | da4804545f7aba4d462eddfec89da6f55c64d29b | |
| parent | cddc4dc6c6c9bc6f9e8e7f81b5264e7265a5c070 (diff) | |
| download | postgresql-8f9be261f43772ccee2eae94d971bac6557cbe6a.tar.gz postgresql-8f9be261f43772ccee2eae94d971bac6557cbe6a.zip | |
Add HOLD_INTERRUPTS section into FinishPreparedTransaction.
If an interrupt arrives in the middle of FinishPreparedTransaction
and any callback decide to call CHECK_FOR_INTERRUPTS (e.g.
RemoveTwoPhaseFile can write a warning with ereport, which checks for
interrupts) then it's possible to leave current GXact undeleted.
Backpatch to all supported branches
Stas Kelvich
Discussion: ihttps://www.postgresql.org/message-id/3AD85097-A3F3-4EBA-99BD-C38EDF8D2949@postgrespro.ru
| -rw-r--r-- | src/backend/access/transam/twophase.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/access/transam/twophase.c b/src/backend/access/transam/twophase.c index cdd8156ce4d..65194db70e3 100644 --- a/src/backend/access/transam/twophase.c +++ b/src/backend/access/transam/twophase.c @@ -1487,6 +1487,9 @@ FinishPreparedTransaction(const char *gid, bool isCommit) /* compute latestXid among all children */ latestXid = TransactionIdLatest(xid, hdr->nsubxacts, children); + /* Prevent cancel/die interrupt while cleaning up */ + HOLD_INTERRUPTS(); + /* * The order of operations here is critical: make the XLOG entry for * commit or abort, then mark the transaction committed or aborted in @@ -1578,6 +1581,8 @@ FinishPreparedTransaction(const char *gid, bool isCommit) LWLockRelease(TwoPhaseStateLock); MyLockedGxact = NULL; + RESUME_INTERRUPTS(); + pfree(buf); } |