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WL#2936

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"Server Variables for Plugins"
  Implement support for plugins to declare server variables.
  Demonstrate functionality by removing InnoDB specific code from sql/*
  New feature for HASH - HASH_UNIQUE flag
  New feature for DYNAMIC_ARRAY - initializer accepts preallocated ptr.
  Completed support for plugin reference counting.
This commit is contained in:
antony@ppcg5.local
2007-03-02 08:43:45 -08:00
parent 83a5eac0a4
commit dc24473cb2
62 changed files with 4546 additions and 2154 deletions
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24
sql/sql_select.cc
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@ -9458,12 +9458,14 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
share->fields= field_count;
/* If result table is small; use a heap */
/* future: storage engine selection can be made dynamic? */
if (blob_count || using_unique_constraint ||
(select_options & (OPTION_BIG_TABLES | SELECT_SMALL_RESULT)) ==
OPTION_BIG_TABLES || (select_options & TMP_TABLE_FORCE_MYISAM))
{
share->db_plugin= ha_lock_engine(0, myisam_hton);
table->file= get_new_handler(share, &table->mem_root,
share->db_type= myisam_hton);
share->db_type());
if (group &&
(param->group_parts > table->file->max_key_parts() ||
param->group_length > table->file->max_key_length()))
@ -9471,8 +9473,9 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
}
else
{
share->db_plugin= ha_lock_engine(0, heap_hton);
table->file= get_new_handler(share, &table->mem_root,
share->db_type= heap_hton);
share->db_type());
}
if (!table->file)
goto err;
@ -9633,7 +9636,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
if (thd->variables.tmp_table_size == ~ (ulonglong) 0) // No limit
share->max_rows= ~(ha_rows) 0;
else
share->max_rows= (ha_rows) (((share->db_type == heap_hton) ?
share->max_rows= (ha_rows) (((share->db_type() == heap_hton) ?
min(thd->variables.tmp_table_size,
thd->variables.max_heap_table_size) :
thd->variables.tmp_table_size) /
@ -9781,7 +9784,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
if (thd->is_fatal_error) // If end of memory
goto err; /* purecov: inspected */
share->db_record_offset= 1;
if (share->db_type == myisam_hton)
if (share->db_type() == myisam_hton)
{
if (create_myisam_tmp_table(table,param,select_options))
goto err;
@ -10088,6 +10091,8 @@ free_tmp_table(THD *thd, TABLE *entry)
if (entry->temp_pool_slot != MY_BIT_NONE)
bitmap_lock_clear_bit(&temp_pool, entry->temp_pool_slot);
plugin_unlock(0, entry->s->db_plugin);
free_root(&own_root, MYF(0)); /* the table is allocated in its own root */
thd->proc_info=save_proc_info;
@ -10107,7 +10112,7 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
int write_err;
DBUG_ENTER("create_myisam_from_heap");
if (table->s->db_type != heap_hton ||
if (table->s->db_type() != heap_hton ||
error != HA_ERR_RECORD_FILE_FULL)
{
table->file->print_error(error,MYF(0));
@ -10116,9 +10121,9 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
new_table= *table;
share= *table->s;
new_table.s= &share;
new_table.s->db_type= myisam_hton;
new_table.s->db_plugin= ha_lock_engine(thd, myisam_hton);
if (!(new_table.file= get_new_handler(&share, &new_table.mem_root,
myisam_hton)))
new_table.s->db_type())))
DBUG_RETURN(1); // End of memory
save_proc_info=thd->proc_info;
@ -10176,9 +10181,12 @@ bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
(void) table->file->delete_table(table->s->table_name.str);
delete table->file;
table->file=0;
plugin_unlock(0, table->s->db_plugin);
share.db_plugin= my_plugin_lock(0, &share.db_plugin);
new_table.s= table->s; // Keep old share
*table= new_table;
*table->s= share;
table->file->change_table_ptr(table, table->s);
table->use_all_columns();
if (save_proc_info)
@ -12761,7 +12769,7 @@ remove_duplicates(JOIN *join, TABLE *entry,List<Item> &fields, Item *having)
free_io_cache(entry); // Safety
entry->file->info(HA_STATUS_VARIABLE);
if (entry->s->db_type == heap_hton ||
if (entry->s->db_type() == heap_hton ||
(!entry->s->blob_fields &&
((ALIGN_SIZE(reclength) + HASH_OVERHEAD) * entry->file->stats.records <
thd->variables.sortbuff_size)))