diff options
Diffstat (limited to 'src/include/access/xlog.h')
| -rw-r--r-- | src/include/access/xlog.h | 55 |
1 files changed, 28 insertions, 27 deletions
diff --git a/src/include/access/xlog.h b/src/include/access/xlog.h index b1808dfc26f..41a8d84dade 100644 --- a/src/include/access/xlog.h +++ b/src/include/access/xlog.h @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: xlog.h,v 1.22 2001/03/18 20:18:59 tgl Exp $ + * $Id: xlog.h,v 1.23 2001/03/22 04:00:32 momjian Exp $ */ #ifndef XLOG_H #define XLOG_H @@ -52,7 +52,7 @@ typedef struct XLogRecord /* * XLOG uses only low 4 bits of xl_info. High 4 bits may be used by rmgr. */ -#define XLR_INFO_MASK 0x0F +#define XLR_INFO_MASK 0x0F /* * We support backup of up to 2 disk blocks per XLOG record (could support @@ -60,9 +60,10 @@ typedef struct XLogRecord * do not need more than 2 anyway). If we backed up any disk blocks then we * use flag bits in xl_info to signal it. */ -#define XLR_BKP_BLOCK_MASK 0x0C /* all info bits used for bkp blocks */ +#define XLR_BKP_BLOCK_MASK 0x0C /* all info bits used for bkp + * blocks */ #define XLR_MAX_BKP_BLOCKS 2 -#define XLR_SET_BKP_BLOCK(iblk) (0x08 >> (iblk)) +#define XLR_SET_BKP_BLOCK(iblk) (0x08 >> (iblk)) #define XLR_BKP_BLOCK_1 XLR_SET_BKP_BLOCK(0) /* 0x08 */ #define XLR_BKP_BLOCK_2 XLR_SET_BKP_BLOCK(1) /* 0x04 */ @@ -70,7 +71,7 @@ typedef struct XLogRecord * Sometimes we log records which are out of transaction control. * Rmgr may "or" XLOG_NO_TRAN into info passed to XLogInsert to indicate this. */ -#define XLOG_NO_TRAN XLR_INFO_MASK +#define XLOG_NO_TRAN XLR_INFO_MASK /* * Header info for a backup block appended to an XLOG record. @@ -81,14 +82,14 @@ typedef struct XLogRecord */ typedef struct BkpBlock { - crc64 crc; - RelFileNode node; - BlockNumber block; + crc64 crc; + RelFileNode node; + BlockNumber block; } BkpBlock; /* * When there is not enough space on current page for whole record, we - * continue on the next page with continuation record. (However, the + * continue on the next page with continuation record. (However, the * XLogRecord header will never be split across pages; if there's less than * SizeOfXLogRecord space left at the end of a page, we just waste it.) * @@ -101,9 +102,9 @@ typedef struct XLogContRecord /* ACTUAL LOG DATA FOLLOWS AT END OF STRUCT */ -} XLogContRecord; +} XLogContRecord; -#define SizeOfXLogContRecord MAXALIGN(sizeof(XLogContRecord)) +#define SizeOfXLogContRecord MAXALIGN(sizeof(XLogContRecord)) /* * Each page of XLOG file has a header like this: @@ -132,7 +133,7 @@ typedef XLogPageHeaderData *XLogPageHeader; * that we don't have problems representing last-byte-position-plus-1. */ #define XLogSegSize ((uint32) (16*1024*1024)) -#define XLogSegsPerFile (((uint32) 0xffffffff) / XLogSegSize) +#define XLogSegsPerFile (((uint32) 0xffffffff) / XLogSegSize) #define XLogFileSize (XLogSegsPerFile * XLogSegSize) /* @@ -143,9 +144,9 @@ typedef XLogPageHeaderData *XLogPageHeader; typedef struct RmgrData { char *rm_name; - void (*rm_redo)(XLogRecPtr lsn, XLogRecord *rptr); - void (*rm_undo)(XLogRecPtr lsn, XLogRecord *rptr); - void (*rm_desc)(char *buf, uint8 xl_info, char *rec); + void (*rm_redo) (XLogRecPtr lsn, XLogRecord *rptr); + void (*rm_undo) (XLogRecPtr lsn, XLogRecord *rptr); + void (*rm_desc) (char *buf, uint8 xl_info, char *rec); } RmgrData; extern RmgrData RmgrTable[]; @@ -166,21 +167,21 @@ extern RmgrData RmgrTable[]; */ typedef struct XLogRecData { - Buffer buffer; /* buffer associated with this data */ - char *data; - uint32 len; + Buffer buffer; /* buffer associated with this data */ + char *data; + uint32 len; struct XLogRecData *next; } XLogRecData; -extern StartUpID ThisStartUpID; /* current SUI */ -extern bool InRecovery; -extern XLogRecPtr MyLastRecPtr; +extern StartUpID ThisStartUpID; /* current SUI */ +extern bool InRecovery; +extern XLogRecPtr MyLastRecPtr; /* these variables are GUC parameters related to XLOG */ -extern int CheckPointSegments; -extern int XLOGbuffers; -extern int XLOGfiles; -extern int XLOG_DEBUG; +extern int CheckPointSegments; +extern int XLOGbuffers; +extern int XLOGfiles; +extern int XLOG_DEBUG; extern char *XLOG_sync_method; extern const char XLOG_sync_method_default[]; @@ -190,10 +191,10 @@ extern void XLogFlush(XLogRecPtr RecPtr); extern void xlog_redo(XLogRecPtr lsn, XLogRecord *record); extern void xlog_undo(XLogRecPtr lsn, XLogRecord *record); -extern void xlog_desc(char *buf, uint8 xl_info, char* rec); +extern void xlog_desc(char *buf, uint8 xl_info, char *rec); extern void UpdateControlFile(void); -extern int XLOGShmemSize(void); +extern int XLOGShmemSize(void); extern void XLOGShmemInit(void); extern void XLOGPathInit(void); extern void BootStrapXLOG(void); |