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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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22
sql/sql_lex.cc
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@ -172,6 +172,7 @@ void lex_start(THD *thd, const uchar *buf, uint length)
lex->spcont= NULL;
lex->proc_list.first= 0;
lex->escape_used= FALSE;
lex->query_tables= 0;
lex->reset_query_tables_list(FALSE);
lex->expr_allows_subselect= TRUE;
@ -211,6 +212,12 @@ void lex_end(LEX *lex)
lex->yacc_yyss= 0;
lex->yacc_yyvs= 0;
}
/* release used plugins */
plugin_unlock_list(0, (plugin_ref*)lex->plugins.buffer,
lex->plugins.elements);
reset_dynamic(&lex->plugins);
DBUG_VOID_RETURN;
}
@ -1673,6 +1680,17 @@ void st_select_lex::print_limit(THD *thd, String *str)
void Query_tables_list::reset_query_tables_list(bool init)
{
if (!init && query_tables)
{
TABLE_LIST *table= query_tables;
for (;;)
{
delete table->view;
if (query_tables_last == &table->next_global ||
!(table= table->next_global))
break;
}
}
query_tables= 0;
query_tables_last= &query_tables;
query_tables_own_last= 0;
@ -1727,6 +1745,10 @@ st_lex::st_lex()
:result(0), yacc_yyss(0), yacc_yyvs(0),
sql_command(SQLCOM_END)
{
my_init_dynamic_array2(&plugins, sizeof(plugin_ref),
plugins_static_buffer,
INITIAL_LEX_PLUGIN_LIST_SIZE,
INITIAL_LEX_PLUGIN_LIST_SIZE);
reset_query_tables_list(TRUE);
}