diff options
Diffstat (limited to 'innobase/page/page0page.c')
| -rw-r--r-- | innobase/page/page0page.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/innobase/page/page0page.c b/innobase/page/page0page.c index a75a7279fb5..f3f6776bf13 100644 --- a/innobase/page/page0page.c +++ b/innobase/page/page0page.c @@ -17,6 +17,7 @@ Created 2/2/1994 Heikki Tuuri #include "lock0lock.h" #include "fut0lst.h" #include "btr0sea.h" +#include "buf0buf.h" /* A cached template page used in page_create */ page_t* page_template = NULL; @@ -63,6 +64,65 @@ Assuming a page size of 8 kB, a typical index page of a secondary index contains 300 index entries, and the size of the page directory is 50 x 4 bytes = 200 bytes. */ +/******************************************************************* +Looks for the directory slot which owns the given record. */ + +ulint +page_dir_find_owner_slot( +/*=====================*/ + /* out: the directory slot number */ + rec_t* rec) /* in: the physical record */ +{ + ulint i; + ulint steps = 0; + page_t* page; + page_dir_slot_t* slot; + rec_t* original_rec = rec; + char err_buf[1000]; + + ut_ad(page_rec_check(rec)); + + while (rec_get_n_owned(rec) == 0) { + steps++; + rec = page_rec_get_next(rec); + } + + page = buf_frame_align(rec); + + i = page_dir_get_n_slots(page) - 1; + slot = page_dir_get_nth_slot(page, i); + + while (page_dir_slot_get_rec(slot) != rec) { + + if (i == 0) { + fprintf(stderr, + "InnoDB: Probable data corruption on page %lu\n", + buf_frame_get_page_no(page)); + + rec_sprintf(err_buf, 900, original_rec); + + fprintf(stderr, + "InnoDB: Original record %s\n" + "InnoDB: on that page. Steps %lu.\n", err_buf, steps); + + rec_sprintf(err_buf, 900, rec); + + fprintf(stderr, + "InnoDB: Cannot find the dir slot for record %s\n" + "InnoDB: on that page!\n", err_buf); + + buf_page_print(page); + + ut_a(0); + } + + i--; + slot = page_dir_get_nth_slot(page, i); + } + + return(i); +} + /****************************************************************** Used to check the consistency of a directory slot. */ static |