diff options
Diffstat (limited to 'src/include/catalog/storage_xlog.h')
-rw-r--r-- | src/include/catalog/storage_xlog.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/include/catalog/storage_xlog.h b/src/include/catalog/storage_xlog.h new file mode 100644 index 0000000..7b21cab --- /dev/null +++ b/src/include/catalog/storage_xlog.h @@ -0,0 +1,59 @@ +/*------------------------------------------------------------------------- + * + * storage_xlog.h + * prototypes for XLog support for backend/catalog/storage.c + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/storage_xlog.h + * + *------------------------------------------------------------------------- + */ +#ifndef STORAGE_XLOG_H +#define STORAGE_XLOG_H + +#include "access/xlogreader.h" +#include "lib/stringinfo.h" +#include "storage/block.h" +#include "storage/relfilenode.h" + +/* + * Declarations for smgr-related XLOG records + * + * Note: we log file creation and truncation here, but logging of deletion + * actions is handled by xact.c, because it is part of transaction commit. + */ + +/* XLOG gives us high 4 bits */ +#define XLOG_SMGR_CREATE 0x10 +#define XLOG_SMGR_TRUNCATE 0x20 + +typedef struct xl_smgr_create +{ + RelFileNode rnode; + ForkNumber forkNum; +} xl_smgr_create; + +/* flags for xl_smgr_truncate */ +#define SMGR_TRUNCATE_HEAP 0x0001 +#define SMGR_TRUNCATE_VM 0x0002 +#define SMGR_TRUNCATE_FSM 0x0004 +#define SMGR_TRUNCATE_ALL \ + (SMGR_TRUNCATE_HEAP|SMGR_TRUNCATE_VM|SMGR_TRUNCATE_FSM) + +typedef struct xl_smgr_truncate +{ + BlockNumber blkno; + RelFileNode rnode; + int flags; +} xl_smgr_truncate; + +extern void log_smgrcreate(const RelFileNode *rnode, ForkNumber forkNum); + +extern void smgr_redo(XLogReaderState *record); +extern void smgr_desc(StringInfo buf, XLogReaderState *record); +extern const char *smgr_identify(uint8 info); + +#endif /* STORAGE_XLOG_H */ |