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buf0buf.c Several bug fixes

Browse source 
buf0flu.c	Several bug fixes
buf0rea.c	Several bug fixes
buf0lru.c	Clearer error message


innobase/buf/buf0lru.c:
  Clearer error message
innobase/buf/buf0buf.c:
  Several bug fixes
innobase/buf/buf0flu.c:
  Several bug fixes
innobase/buf/buf0rea.c:
  Several bug fixes
This commit is contained in:
unknown 2001-06-24 19:33:50 +03:00
commit ecb14493f2
4 changed files with 100 additions and 11 deletions
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73
innobase/buf/buf0buf.c
View file

@ -241,6 +241,8 @@ buf_block_init(
block->modify_clock = ut_dulint_zero;
block->file_page_was_freed = FALSE;
rw_lock_create(&(block->lock));
ut_ad(rw_lock_validate(&(block->lock)));
@ -542,6 +544,64 @@ buf_page_peek(
return(FALSE);
}
/************************************************************************
Sets file_page_was_freed TRUE if the page is found in the buffer pool.
This function should be called when we free a file page and want the
debug version to check that it is not accessed any more unless
reallocated. */
buf_block_t*
buf_page_set_file_page_was_freed(
/*=============================*/
/* out: control block if found from page hash table,
otherwise NULL */
ulint space, /* in: space id */
ulint offset) /* in: page number */
{
buf_block_t* block;
mutex_enter_fast(&(buf_pool->mutex));
block = buf_page_hash_get(space, offset);
if (block) {
block->file_page_was_freed = TRUE;
}
mutex_exit(&(buf_pool->mutex));
return(block);
}
/************************************************************************
Sets file_page_was_freed FALSE if the page is found in the buffer pool.
This function should be called when we free a file page and want the
debug version to check that it is not accessed any more unless
reallocated. */
buf_block_t*
buf_page_reset_file_page_was_freed(
/*===============================*/
/* out: control block if found from page hash table,
otherwise NULL */
ulint space, /* in: space id */
ulint offset) /* in: page number */
{
buf_block_t* block;
mutex_enter_fast(&(buf_pool->mutex));
block = buf_page_hash_get(space, offset);
if (block) {
block->file_page_was_freed = FALSE;
}
mutex_exit(&(buf_pool->mutex));
return(block);
}
/************************************************************************
This is the general function used to get access to a database page. */
@ -646,6 +706,9 @@ loop:
block->accessed = TRUE;
#ifdef UNIV_DEBUG_FILE_ACCESSES
ut_a(block->file_page_was_freed == FALSE);
#endif
mutex_exit(&(buf_pool->mutex));
#ifdef UNIV_DEBUG
@ -842,6 +905,9 @@ buf_page_optimistic_get_func(
ut_ad(block->buf_fix_count > 0);
ut_ad(block->state == BUF_BLOCK_FILE_PAGE);
#ifdef UNIV_DEBUG_FILE_ACCESSES
ut_a(block->file_page_was_freed == FALSE);
#endif
if (!accessed) {
/* In the case of a first access, try to apply linear
read-ahead */
@ -949,6 +1015,9 @@ buf_page_get_known_nowait(
#endif
ut_ad(block->buf_fix_count > 0);
ut_ad(block->state == BUF_BLOCK_FILE_PAGE);
#ifdef UNIV_DEBUG_FILE_ACCESSES
ut_a(block->file_page_was_freed == FALSE);
#endif
#ifdef UNIV_IBUF_DEBUG
ut_a((mode == BUF_KEEP_OLD)
@ -996,6 +1065,8 @@ buf_page_init(
block->n_hash_helps = 0;
block->is_hashed = FALSE;
block->file_page_was_freed = FALSE;
}
/************************************************************************
@ -1126,6 +1197,8 @@ buf_page_create(
#ifdef UNIV_IBUF_DEBUG
ut_a(ibuf_count_get(block->space, block->offset) == 0);
#endif
block->file_page_was_freed = FALSE;
/* Page can be found in buf_pool */
mutex_exit(&(buf_pool->mutex));