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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:15:05 +0000
commit46651ce6fe013220ed397add242004d764fc0153 (patch)
tree6e5299f990f88e60174a1d3ae6e48eedd2688b2b /src/backend/access/rmgrdesc/mxactdesc.c
parentInitial commit. (diff)
downloadpostgresql-14-46651ce6fe013220ed397add242004d764fc0153.tar.xz
postgresql-14-46651ce6fe013220ed397add242004d764fc0153.zip
Adding upstream version 14.5.upstream/14.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/backend/access/rmgrdesc/mxactdesc.c')
-rw-r--r--src/backend/access/rmgrdesc/mxactdesc.c105
1 files changed, 105 insertions, 0 deletions
diff --git a/src/backend/access/rmgrdesc/mxactdesc.c b/src/backend/access/rmgrdesc/mxactdesc.c
new file mode 100644
index 0000000..8c37690
--- /dev/null
+++ b/src/backend/access/rmgrdesc/mxactdesc.c
@@ -0,0 +1,105 @@
+/*-------------------------------------------------------------------------
+ *
+ * mxactdesc.c
+ * rmgr descriptor routines for access/transam/multixact.c
+ *
+ * Portions Copyright (c) 1996-2021, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ *
+ * IDENTIFICATION
+ * src/backend/access/rmgrdesc/mxactdesc.c
+ *
+ *-------------------------------------------------------------------------
+ */
+#include "postgres.h"
+
+#include "access/multixact.h"
+
+static void
+out_member(StringInfo buf, MultiXactMember *member)
+{
+ appendStringInfo(buf, "%u ", member->xid);
+ switch (member->status)
+ {
+ case MultiXactStatusForKeyShare:
+ appendStringInfoString(buf, "(keysh) ");
+ break;
+ case MultiXactStatusForShare:
+ appendStringInfoString(buf, "(sh) ");
+ break;
+ case MultiXactStatusForNoKeyUpdate:
+ appendStringInfoString(buf, "(fornokeyupd) ");
+ break;
+ case MultiXactStatusForUpdate:
+ appendStringInfoString(buf, "(forupd) ");
+ break;
+ case MultiXactStatusNoKeyUpdate:
+ appendStringInfoString(buf, "(nokeyupd) ");
+ break;
+ case MultiXactStatusUpdate:
+ appendStringInfoString(buf, "(upd) ");
+ break;
+ default:
+ appendStringInfoString(buf, "(unk) ");
+ break;
+ }
+}
+
+void
+multixact_desc(StringInfo buf, XLogReaderState *record)
+{
+ char *rec = XLogRecGetData(record);
+ uint8 info = XLogRecGetInfo(record) & ~XLR_INFO_MASK;
+
+ if (info == XLOG_MULTIXACT_ZERO_OFF_PAGE ||
+ info == XLOG_MULTIXACT_ZERO_MEM_PAGE)
+ {
+ int pageno;
+
+ memcpy(&pageno, rec, sizeof(int));
+ appendStringInfo(buf, "%d", pageno);
+ }
+ else if (info == XLOG_MULTIXACT_CREATE_ID)
+ {
+ xl_multixact_create *xlrec = (xl_multixact_create *) rec;
+ int i;
+
+ appendStringInfo(buf, "%u offset %u nmembers %d: ", xlrec->mid,
+ xlrec->moff, xlrec->nmembers);
+ for (i = 0; i < xlrec->nmembers; i++)
+ out_member(buf, &xlrec->members[i]);
+ }
+ else if (info == XLOG_MULTIXACT_TRUNCATE_ID)
+ {
+ xl_multixact_truncate *xlrec = (xl_multixact_truncate *) rec;
+
+ appendStringInfo(buf, "offsets [%u, %u), members [%u, %u)",
+ xlrec->startTruncOff, xlrec->endTruncOff,
+ xlrec->startTruncMemb, xlrec->endTruncMemb);
+ }
+}
+
+const char *
+multixact_identify(uint8 info)
+{
+ const char *id = NULL;
+
+ switch (info & ~XLR_INFO_MASK)
+ {
+ case XLOG_MULTIXACT_ZERO_OFF_PAGE:
+ id = "ZERO_OFF_PAGE";
+ break;
+ case XLOG_MULTIXACT_ZERO_MEM_PAGE:
+ id = "ZERO_MEM_PAGE";
+ break;
+ case XLOG_MULTIXACT_CREATE_ID:
+ id = "CREATE_ID";
+ break;
+ case XLOG_MULTIXACT_TRUNCATE_ID:
+ id = "TRUNCATE_ID";
+ break;
+ }
+
+ return id;
+}