diff options
Diffstat (limited to 'src/backend/utils')
| -rw-r--r-- | src/backend/utils/time/snapmgr.c | 8 | ||||
| -rw-r--r-- | src/backend/utils/time/tqual.c | 4 |
2 files changed, 6 insertions, 6 deletions
diff --git a/src/backend/utils/time/snapmgr.c b/src/backend/utils/time/snapmgr.c index 5aebbd18552..574099dc9a3 100644 --- a/src/backend/utils/time/snapmgr.c +++ b/src/backend/utils/time/snapmgr.c @@ -19,7 +19,7 @@ * have regd_count = 1 and are counted in RegisteredSnapshots, but are not * tracked by any resource owner. * - * These arrangements let us reset MyProc->xmin when there are no snapshots + * These arrangements let us reset MyPgXact->xmin when there are no snapshots * referenced by this transaction. (One possible improvement would be to be * able to advance Xmin when the snapshot with the earliest Xmin is no longer * referenced. That's a bit harder though, it requires more locking, and @@ -104,7 +104,7 @@ static ActiveSnapshotElt *ActiveSnapshot = NULL; * How many snapshots is resowner.c tracking for us? * * Note: for now, a simple counter is enough. However, if we ever want to be - * smarter about advancing our MyProc->xmin we will need to be more + * smarter about advancing our MyPgXact->xmin we will need to be more * sophisticated about this, perhaps keeping our own list of snapshots. */ static int RegisteredSnapshots = 0; @@ -266,7 +266,7 @@ SetTransactionSnapshot(Snapshot sourcesnap, TransactionId sourcexid) /* NB: curcid should NOT be copied, it's a local matter */ /* - * Now we have to fix what GetSnapshotData did with MyProc->xmin and + * Now we have to fix what GetSnapshotData did with MyPgXact->xmin and * TransactionXmin. There is a race condition: to make sure we are not * causing the global xmin to go backwards, we have to test that the * source transaction is still running, and that has to be done atomically. @@ -569,7 +569,7 @@ UnregisterSnapshotFromOwner(Snapshot snapshot, ResourceOwner owner) /* * SnapshotResetXmin * - * If there are no more snapshots, we can reset our PGPROC->xmin to InvalidXid. + * If there are no more snapshots, we can reset our PGXACT->xmin to InvalidXid. * Note we can do this without locking because we assume that storing an Xid * is atomic. */ diff --git a/src/backend/utils/time/tqual.c b/src/backend/utils/time/tqual.c index 727e0bf91bf..01f73980aff 100644 --- a/src/backend/utils/time/tqual.c +++ b/src/backend/utils/time/tqual.c @@ -10,12 +10,12 @@ * the passed-in buffer. The caller must hold not only a pin, but at least * shared buffer content lock on the buffer containing the tuple. * - * NOTE: must check TransactionIdIsInProgress (which looks in PGPROC array) + * NOTE: must check TransactionIdIsInProgress (which looks in PGXACT array) * before TransactionIdDidCommit/TransactionIdDidAbort (which look in * pg_clog). Otherwise we have a race condition: we might decide that a * just-committed transaction crashed, because none of the tests succeed. * xact.c is careful to record commit/abort in pg_clog before it unsets - * MyProc->xid in PGPROC array. That fixes that problem, but it also + * MyPgXact->xid in PGXACT array. That fixes that problem, but it also * means there is a window where TransactionIdIsInProgress and * TransactionIdDidCommit will both return true. If we check only * TransactionIdDidCommit, we could consider a tuple committed when a |