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Bug #38693: leaked memory with blobs!

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If delayed insert fails to upgrade the lock it was not
freeing the temporary memory storage used to keep
newly constructed blob values in memory.
Fixed by iterating over the remaining rows in the delayed
insert rowset and freeing the blob storage for each row.

No test suite because it involves concurrent delayed inserts 
on a table and cannot easily be made deterministic. 

Added a correct valgrind suppression for Fedora 9.
This commit is contained in:
Georgi Kodinov
2008-10-15 16:55:52 +03:00
parent d4c75b7d0f
commit b204dc43cc
2 changed files with 13 additions and 0 deletions
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8
mysql-test/valgrind.supp
View File

@@ -319,6 +319,14 @@
fun:_dl_map_object fun:_dl_map_object
} }
{
libc pthread_exit 8
Memcheck:Leak
fun:malloc
fun:local_strdup
fun:_dl_map_object
fun:dl_open_worker
}
# #

5
sql/sql_insert.cc
View File

@@ -2585,6 +2585,11 @@ bool Delayed_insert::handle_inserts(void)
/* Remove all not used rows */ /* Remove all not used rows */
while ((row=rows.get())) while ((row=rows.get()))
{ {
if (table->s->blob_fields)
{
memcpy(table->record[0],row->record,table->s->reclength);
free_delayed_insert_blobs(table);
}
delete row; delete row;
thread_safe_increment(delayed_insert_errors,&LOCK_delayed_status); thread_safe_increment(delayed_insert_errors,&LOCK_delayed_status);
stacked_inserts--; stacked_inserts--;