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fully functional HANDLER table CLOSE

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This commit is contained in:
serg@serg.mysql.com
2001-04-15 22:56:20 +02:00
parent 4fbab1d681
commit f751ab1a9a
3 changed files with 60 additions and 45 deletions
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79
sql/sql_base.cc
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@ -421,40 +421,9 @@ void close_thread_tables(THD *thd, bool locked)
DBUG_PRINT("info", ("thd->open_tables=%p", thd->open_tables));
for (table=thd->open_tables ; table ; table=next)
{
next=table->next;
if (table->version != refresh_version ||
thd->version != refresh_version || !table->db_stat)
{
VOID(hash_delete(&open_cache,(byte*) table));
found_old_table=1;
}
else
{
if (table->flush_version != flush_version)
{
table->flush_version=flush_version;
table->file->extra(HA_EXTRA_FLUSH);
}
else
{
// Free memory and reset for next loop
table->file->extra(HA_EXTRA_RESET);
}
table->in_use=0;
if (unused_tables)
{
table->next=unused_tables; /* Link in last */
table->prev=unused_tables->prev;
unused_tables->prev=table;
table->prev->next=table;
}
else
unused_tables=table->next=table->prev=table;
}
}
thd->open_tables=0;
while (thd->open_tables)
found_old_table|=close_thread_table(thd, &thd->open_tables);
/* Free tables to hold down open files */
while (open_cache.records > table_cache_size && unused_tables)
VOID(hash_delete(&open_cache,(byte*) unused_tables)); /* purecov: tested */
@ -470,6 +439,48 @@ void close_thread_tables(THD *thd, bool locked)
DBUG_VOID_RETURN;
}
/* move one table to free list */
bool close_thread_table(THD *thd, TABLE **table_ptr)
{
DBUG_ENTER("close_thread_table");
bool found_old_table=0;
TABLE *table=*table_ptr;
*table_ptr=table->next;
if (table->version != refresh_version ||
thd->version != refresh_version || !table->db_stat)
{
VOID(hash_delete(&open_cache,(byte*) table));
found_old_table=1;
}
else
{
if (table->flush_version != flush_version)
{
table->flush_version=flush_version;
table->file->extra(HA_EXTRA_FLUSH);
}
else
{
// Free memory and reset for next loop
table->file->extra(HA_EXTRA_RESET);
}
table->in_use=0;
if (unused_tables)
{
table->next=unused_tables; /* Link in last */
table->prev=unused_tables->prev;
unused_tables->prev=table;
table->prev->next=table;
}
else
unused_tables=table->next=table->prev=table;
}
DBUG_RETURN(found_old_table);
}
/* Close and delete temporary tables */
void close_temporary(TABLE *table,bool delete_table)