database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00
Code Activity

Fix a couple of comments.

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

10
src/backend/storage/ipc/procarray.c
View File

@ -23,7 +23,7 @@
* *
* *
* IDENTIFICATION * 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. * Also consider the transaction's Xmin, if set.
* *
* Note that this Xmin may seem to be guaranteed to be always * We must check both Xid and Xmin because there is a window
* lower than the transaction's Xid, but this is not so because * where an xact's Xid is set but Xmin isn't yet.
* there is a time window on which the Xid is already assigned
* but the Xmin has not being calculated yet.
*/ */
xid = proc->xmin; xid = proc->xmin;
if (TransactionIdIsNormal(xid)) if (TransactionIdIsNormal(xid))
@ -489,7 +487,7 @@ GetOldestXmin(bool allDbs, bool ignoreVacuum)
* older than this are known not running any more. * older than this are known not running any more.
* RecentGlobalXmin: the global xmin (oldest TransactionXmin across all * RecentGlobalXmin: the global xmin (oldest TransactionXmin across all
* running transactions, except those running LAZY VACUUM). This is * 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).
*---------- *----------
*/ */
Snapshot Snapshot