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SET TRANSACTION ISOLATION LEVEL ...

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LOCK TABLE IN ... MODE
...implemented
This commit is contained in:
Vadim B. Mikheev
1998-12-18 09:10:39 +00:00
parent c7da80bb9a
commit 3498d878cb
19 changed files with 6953 additions and 6516 deletions
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28
src/backend/utils/time/tqual.c
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@@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.22 1998/12/16 11:53:55 vadim Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/time/tqual.c,v 1.23 1998/12/18 09:10:39 vadim Exp $
*
*-------------------------------------------------------------------------
*/
@@ -30,7 +30,7 @@ SnapshotData SnapshotDirtyData;
Snapshot SnapshotDirty = &SnapshotDirtyData;
Snapshot QuerySnapshot = NULL;
static Snapshot SerializedSnapshot = NULL;
Snapshot SerializableSnapshot = NULL;
/*
* XXX Transaction system override hacks start here
@@ -551,24 +551,24 @@ SetQuerySnapshot(void)
{
/* 1st call in xaction */
if (SerializedSnapshot == NULL)
if (SerializableSnapshot == NULL)
{
SerializedSnapshot = GetSnapshotData();
QuerySnapshot = SerializedSnapshot;
SerializableSnapshot = GetSnapshotData(true);
QuerySnapshot = SerializableSnapshot;
Assert(QuerySnapshot != NULL);
return;
}
if (QuerySnapshot != SerializedSnapshot)
if (QuerySnapshot != SerializableSnapshot)
{
free(QuerySnapshot->xip);
free(QuerySnapshot);
}
if (XactIsoLevel == XACT_SERIALIZED)
QuerySnapshot = SerializedSnapshot;
if (XactIsoLevel == XACT_SERIALIZABLE)
QuerySnapshot = SerializableSnapshot;
else
QuerySnapshot = GetSnapshotData();
QuerySnapshot = GetSnapshotData(false);
Assert(QuerySnapshot != NULL);
@@ -578,7 +578,7 @@ void
FreeXactSnapshot(void)
{
if (QuerySnapshot != NULL && QuerySnapshot != SerializedSnapshot)
if (QuerySnapshot != NULL && QuerySnapshot != SerializableSnapshot)
{
free(QuerySnapshot->xip);
free(QuerySnapshot);
@@ -586,12 +586,12 @@ FreeXactSnapshot(void)
QuerySnapshot = NULL;
if (SerializedSnapshot != NULL)
if (SerializableSnapshot != NULL)
{
free(SerializedSnapshot->xip);
free(SerializedSnapshot);
free(SerializableSnapshot->xip);
free(SerializableSnapshot);
}
SerializedSnapshot = NULL;
SerializableSnapshot = NULL;
}