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Diffstat (limited to 'src/include/commands/dbcommands_xlog.h')
| -rw-r--r-- | src/include/commands/dbcommands_xlog.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/src/include/commands/dbcommands_xlog.h b/src/include/commands/dbcommands_xlog.h new file mode 100644 index 0000000..0ee2452 --- /dev/null +++ b/src/include/commands/dbcommands_xlog.h @@ -0,0 +1,60 @@ +/*------------------------------------------------------------------------- + * + * dbcommands_xlog.h + * Database resource manager XLOG definitions (create/drop database). + * + * + * Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/commands/dbcommands_xlog.h + * + *------------------------------------------------------------------------- + */ +#ifndef DBCOMMANDS_XLOG_H +#define DBCOMMANDS_XLOG_H + +#include "access/xlogreader.h" +#include "lib/stringinfo.h" + +/* record types */ +#define XLOG_DBASE_CREATE_FILE_COPY 0x00 +#define XLOG_DBASE_CREATE_WAL_LOG 0x10 +#define XLOG_DBASE_DROP 0x20 + +/* + * Single WAL record for an entire CREATE DATABASE operation. This is used + * by the FILE_COPY strategy. + */ +typedef struct xl_dbase_create_file_copy_rec +{ + Oid db_id; + Oid tablespace_id; + Oid src_db_id; + Oid src_tablespace_id; +} xl_dbase_create_file_copy_rec; + +/* + * WAL record for the beginning of a CREATE DATABASE operation, when the + * WAL_LOG strategy is used. Each individual block will be logged separately + * afterward. + */ +typedef struct xl_dbase_create_wal_log_rec +{ + Oid db_id; + Oid tablespace_id; +} xl_dbase_create_wal_log_rec; + +typedef struct xl_dbase_drop_rec +{ + Oid db_id; + int ntablespaces; /* number of tablespace IDs */ + Oid tablespace_ids[FLEXIBLE_ARRAY_MEMBER]; +} xl_dbase_drop_rec; +#define MinSizeOfDbaseDropRec offsetof(xl_dbase_drop_rec, tablespace_ids) + +extern void dbase_redo(XLogReaderState *rptr); +extern void dbase_desc(StringInfo buf, XLogReaderState *rptr); +extern const char *dbase_identify(uint8 info); + +#endif /* DBCOMMANDS_XLOG_H */ |