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Fix a couple of comments.

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This commit is contained in:
Tom Lane 2006-07-30 20:17:11 +00:00
parent 0bee536ad8
commit 8822263635
1 changed files with 4 additions and 6 deletions
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10
src/backend/storage/ipc/procarray.c
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@ -23,7 +23,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.15 2006/07/30 02:07:18 alvherre Exp $
* $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.16 2006/07/30 20:17:11 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -446,10 +446,8 @@ GetOldestXmin(bool allDbs, bool ignoreVacuum)
/*
* Also consider the transaction's Xmin, if set.
*
* Note that this Xmin may seem to be guaranteed to be always
* lower than the transaction's Xid, but this is not so because
* there is a time window on which the Xid is already assigned
* but the Xmin has not being calculated yet.
* We must check both Xid and Xmin because there is a window
* where an xact's Xid is set but Xmin isn't yet.
*/
xid = proc->xmin;
if (TransactionIdIsNormal(xid))
@ -489,7 +487,7 @@ GetOldestXmin(bool allDbs, bool ignoreVacuum)
* older than this are known not running any more.
* RecentGlobalXmin: the global xmin (oldest TransactionXmin across all
* running transactions, except those running LAZY VACUUM). This is
* the same computation done by GetOldestXmin(true, false).
* the same computation done by GetOldestXmin(true, true).
*----------
*/
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