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buf0buf.c Several bug fixes

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buf0flu.c	Several bug fixes
buf0rea.c	Several bug fixes
buf0lru.c	Clearer error message
This commit is contained in:
heikki@donna.mysql.fi
2001-06-24 19:33:50 +03:00
parent e90679351c
commit fbd725063f
4 changed files with 100 additions and 11 deletions
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26
innobase/buf/buf0rea.c
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@ -18,6 +18,7 @@ Created 11/5/1995 Heikki Tuuri
#include "log0recv.h"
#include "trx0sys.h"
#include "os0file.h"
#include "srv0start.h"
/* The size in blocks of the area where the random read-ahead algorithm counts
the accessed pages when deciding whether to read-ahead */
@ -132,10 +133,16 @@ buf_read_ahead_random(
ulint low, high;
ulint i;
if (ibuf_bitmap_page(offset)) {
if (srv_startup_is_before_trx_rollback_phase) {
/* No read-ahead to avoid thread deadlocks */
return(0);
}
/* If it is an ibuf bitmap page, we do no read-ahead, as
that could break the ibuf page access order */
if (ibuf_bitmap_page(offset) || trx_sys_hdr_page(space, offset)) {
/* If it is an ibuf bitmap page or trx sys hdr, we do
no read-ahead, as that could break the ibuf page access
order */
return(0);
}
@ -301,9 +308,16 @@ buf_read_ahead_linear(
ulint low, high;
ulint i;
if (ibuf_bitmap_page(offset)) {
/* If it is an ibuf bitmap page, we do no read-ahead, as
that could break the ibuf page access order */
if (srv_startup_is_before_trx_rollback_phase) {
/* No read-ahead to avoid thread deadlocks */
return(0);
}
if (ibuf_bitmap_page(offset) || trx_sys_hdr_page(space, offset)) {
/* If it is an ibuf bitmap page or trx sys hdr, we do
no read-ahead, as that could break the ibuf page access
order */
return(0);
}