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Merge hundin:/my/mysql-4.0 into bitch.mysql.fi:/my/mysql-4.0

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unknown 2002-06-07 10:21:23 +03:00
commit 330addff25
2 changed files with 10 additions and 5 deletions
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4
Docs/manual.texi
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@ -49343,12 +49343,14 @@ Our TODO section contains what we plan to have in 4.0. @xref{TODO MySQL 4.0}.
@itemize @bullet
@item
Fixed query cache align data bug.
@item
Fixed mutex bug in replication when reading from master fails.
@item
Added missing mutex in @code{TRUNCATE TABLE}; This fixes some core
dump/hangup problems when using @code{TRUNCATE TABLE}.
@item
Fixed bug in multi-table @code{DELETE} when optimiser uses only indices
Fixed bug in multi-table @code{DELETE} when optimiser uses only indices.
@item
Fixed that @code{ALTER TABLE table_name RENAME new_table_name} is as fast
as @code{RENAME TABLE}.

11
sql/sql_cache.cc
View file

@ -2679,14 +2679,17 @@ my_bool Query_cache::move_by_type(byte **border,
*border += len;
*before = new_block;
/* If result writing complete && we have free space in block */
ulong free_space = new_block->length - new_block->used;
ulong free_space= new_block->length - new_block->used;
free_space-= free_space % ALIGN_SIZE(1);
if (query->result()->type == Query_cache_block::RESULT &&
new_block->length > new_block->used &&
*gap + free_space > min_allocation_unit &&
new_block->length - free_space > min_allocation_unit)
{
*border -= free_space;
*gap += free_space;
*border-= free_space;
*gap+= free_space;
DBUG_PRINT("qcache",
("rest of result free space added to gap (%lu)", *gap));
new_block->length -= free_space;
}
BLOCK_UNLOCK_WR(query_block);
@ -2747,7 +2750,7 @@ my_bool Query_cache::join_results(ulong join_limit)
header->length() > join_limit)
{
Query_cache_block *new_result_block =
get_free_block(header->length() +
get_free_block(ALIGN_SIZE(header->length()) +
ALIGN_SIZE(sizeof(Query_cache_block)) +
ALIGN_SIZE(sizeof(Query_cache_result)), 1, 0);
if (new_result_block != 0)