diff options
Diffstat (limited to 'innobase/include/fil0fil.h')
| -rw-r--r-- | innobase/include/fil0fil.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/innobase/include/fil0fil.h b/innobase/include/fil0fil.h index 23ef0304b2d..ad3149f0b36 100644 --- a/innobase/include/fil0fil.h +++ b/innobase/include/fil0fil.h @@ -43,7 +43,10 @@ struct fil_addr_struct{ extern fil_addr_t fil_addr_null; /* The byte offsets on a file page for various variables */ -#define FIL_PAGE_SPACE 0 /* space id the page belongs to */ +#define FIL_PAGE_SPACE_OR_CHKSUM 0 /* in < MySQL-4.0.14 space id the + page belongs to (== 0) but in later + versions the 'new' checksum of the + page */ #define FIL_PAGE_OFFSET 4 /* page offset inside space */ #define FIL_PAGE_PREV 8 /* if there is a 'natural' predecessor of the page, its offset */ @@ -64,7 +67,7 @@ extern fil_addr_t fil_addr_null; #define FIL_PAGE_DATA 38 /* start of the data on the page */ /* File page trailer */ -#define FIL_PAGE_END_LSN 8 /* the low 4 bytes of this are used +#define FIL_PAGE_END_LSN_OLD_CHKSUM 8 /* the low 4 bytes of this are used to store the page checksum, the last 4 bytes should be identical to the last 4 bytes of FIL_PAGE_LSN */ @@ -383,6 +386,14 @@ fil_space_release_free_extents( /*===========================*/ ulint id, /* in: space id */ ulint n_reserved); /* in: how many one reserved */ +/*********************************************************************** +Gets the number of reserved extents. If the database is silent, this number +should be zero. */ + +ulint +fil_space_get_n_reserved_extents( +/*=============================*/ + ulint id); /* in: space id */ typedef struct fil_space_struct fil_space_t; |