diff options
Diffstat (limited to 'src/backend/access/transam/slru.c')
| -rw-r--r-- | src/backend/access/transam/slru.c | 57 |
1 files changed, 55 insertions, 2 deletions
diff --git a/src/backend/access/transam/slru.c b/src/backend/access/transam/slru.c index 58798d0f07f..0181e2d6260 100644 --- a/src/backend/access/transam/slru.c +++ b/src/backend/access/transam/slru.c @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.16 2004/05/31 03:47:54 tgl Exp $ + * $PostgreSQL: pgsql/src/backend/access/transam/slru.c,v 1.17 2004/07/01 00:49:42 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -16,8 +16,9 @@ #include <sys/stat.h> #include <unistd.h> +#include "access/clog.h" #include "access/slru.h" -#include "access/clog.h" /* only for NUM_CLOG_BUFFERS */ +#include "access/subtrans.h" #include "postmaster/bgwriter.h" #include "storage/fd.h" #include "storage/lwlock.h" @@ -1025,3 +1026,55 @@ SlruScanDirectory(SlruCtl ctl, int cutoffPage, bool doDeletions) return found; } + +/* + * SLRU resource manager's routines + */ +void +slru_redo(XLogRecPtr lsn, XLogRecord *record) +{ + uint8 info = record->xl_info & ~XLR_INFO_MASK; + int pageno; + + memcpy(&pageno, XLogRecGetData(record), sizeof(int)); + + switch (info) + { + case CLOG_ZEROPAGE: + clog_zeropage_redo(pageno); + break; + case SUBTRANS_ZEROPAGE: + subtrans_zeropage_redo(pageno); + break; + default: + elog(PANIC, "slru_redo: unknown op code %u", info); + } +} + +void +slru_undo(XLogRecPtr lsn, XLogRecord *record) +{ +} + +void +slru_desc(char *buf, uint8 xl_info, char *rec) +{ + uint8 info = xl_info & ~XLR_INFO_MASK; + + if (info == CLOG_ZEROPAGE) + { + int pageno; + + memcpy(&pageno, rec, sizeof(int)); + sprintf(buf + strlen(buf), "clog zeropage: %d", pageno); + } + else if (info == SUBTRANS_ZEROPAGE) + { + int pageno; + + memcpy(&pageno, rec, sizeof(int)); + sprintf(buf + strlen(buf), "subtrans zeropage: %d", pageno); + } + else + strcat(buf, "UNKNOWN"); +} |