diff options
Diffstat (limited to 'src/include/access/gistxlog.h')
| -rw-r--r-- | src/include/access/gistxlog.h | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/include/access/gistxlog.h b/src/include/access/gistxlog.h index 5117aabf1af..2f87b67a53a 100644 --- a/src/include/access/gistxlog.h +++ b/src/include/access/gistxlog.h @@ -19,11 +19,12 @@ #define XLOG_GIST_PAGE_UPDATE 0x00 #define XLOG_GIST_DELETE 0x10 /* delete leaf index tuples for a page */ - /* #define XLOG_GIST_NEW_ROOT 0x20 */ /* not used anymore */ +#define XLOG_GIST_PAGE_REUSE 0x20 /* old page is about to be reused from + * FSM */ #define XLOG_GIST_PAGE_SPLIT 0x30 /* #define XLOG_GIST_INSERT_COMPLETE 0x40 */ /* not used anymore */ #define XLOG_GIST_CREATE_INDEX 0x50 - /* #define XLOG_GIST_PAGE_DELETE 0x60 */ /* not used anymore */ +#define XLOG_GIST_PAGE_DELETE 0x60 /* * Backup Blk 0: updated page. @@ -76,6 +77,31 @@ typedef struct gistxlogPageSplit */ } gistxlogPageSplit; +/* + * Backup Blk 0: page that was deleted. + * Backup Blk 1: parent page, containing the downlink to the deleted page. + */ +typedef struct gistxlogPageDelete +{ + TransactionId deleteXid; /* last Xid which could see page in scan */ + OffsetNumber downlinkOffset; /* Offset of downlink referencing this page */ +} gistxlogPageDelete; + +#define SizeOfGistxlogPageDelete (offsetof(gistxlogPageDelete, downlinkOffset) + sizeof(OffsetNumber)) + + +/* + * This is what we need to know about page reuse, for hot standby. + */ +typedef struct gistxlogPageReuse +{ + RelFileNode node; + BlockNumber block; + TransactionId latestRemovedXid; +} gistxlogPageReuse; + +#define SizeOfGistxlogPageReuse (offsetof(gistxlogPageReuse, latestRemovedXid) + sizeof(TransactionId)) + extern void gist_redo(XLogReaderState *record); extern void gist_desc(StringInfo buf, XLogReaderState *record); extern const char *gist_identify(uint8 info); |