Cleanup for procarray.c.

diff --git a/src/backend/storage/ipc/procarray.c b/src/backend/storage/ipc/procarray.c
index 19e5efa..d2d3977 100644 (file)
--- a/src/backend/storage/ipc/procarray.c
+++ b/src/backend/storage/ipc/procarray.c
@@ -23,7 +23,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.21 2007/01/16 13:28:56 alvherre Exp $
+ *       $PostgreSQL: pgsql/src/backend/storage/ipc/procarray.c,v 1.22 2007/03/23 03:16:39 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -590,6 +590,11 @@ GetSnapshotData(Snapshot snapshot, bool serializable)
 
        xmax = ReadNewTransactionId();
 
+       /*
+        * Spin over procArray checking xid, xmin, and subxids.  The goal is
+        * to gather all active xids, find the lowest xmin, and try to record
+        * subxids.
+        */
        for (index = 0; index < arrayP->numProcs; index++)
        {
                PGPROC     *proc = arrayP->procs[index];
@@ -614,8 +619,7 @@ GetSnapshotData(Snapshot snapshot, bool serializable)
 
                if (TransactionIdPrecedes(xid, xmin))
                        xmin = xid;
-               snapshot->xip[count] = xid;
-               count++;
+               snapshot->xip[count++] = xid;
 
                /* Update globalxmin to be the smallest valid xmin */
                xid = proc->xmin;