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  • Committer: Olaf van der Spek
  • Date: 2011-04-20 09:27:49 UTC
  • mto: This revision was merged to the branch mainline in revision 2285.
  • Revision ID: olafvdspek@gmail.com-20110420092749-hw1q9rfj1pumc2no
Session Cache

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drizzled/statement/flush.cc
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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 *
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 *  Copyright (C) 2009 Sun Microsystems
 
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 *  Copyright (C) 2009 Sun Microsystems, Inc.
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 *
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 *  This program is free software; you can redistribute it and/or modify
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 *  it under the terms of the GNU General Public License as published by
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 */
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#include "config.h"
 
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#include <config.h>
 
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#include <drizzled/show.h>
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#include <drizzled/session.h>
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#include <drizzled/lock.h>
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#include <drizzled/statement/flush.h>
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#include "drizzled/sql_table.h"
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#include "drizzled/plugin/logging.h"
 
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#include <drizzled/sql_table.h>
 
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#include <drizzled/plugin/logging.h>
 
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#include <drizzled/plugin/storage_engine.h>
 
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#include <drizzled/statistics_variables.h>
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namespace drizzled
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{
 
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namespace drizzled {
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bool statement::Flush::execute()
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{
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   */
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  if (not reloadCache())
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  {
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    /*
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     * We WANT to write and we CAN write.
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     * ! we write after unlocking the table.
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     *
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     * Presumably, RESET and binlog writing doesn't require synchronization
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     */
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    write_bin_log(session, *session->getQueryString());
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    session->my_ok();
 
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    session().my_ok();
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  }
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  return false;
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bool statement::Flush::reloadCache()
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{
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  bool result= false;
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  TableList *tables= (TableList *) session->lex->select_lex.table_list.first;
 
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  TableList *tables= (TableList *) lex().select_lex.table_list.first;
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  if (flush_log)
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  {
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  */
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  if (flush_tables || flush_tables_with_read_lock)
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  {
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    if (session && flush_tables_with_read_lock)
 
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    if (&session() && flush_tables_with_read_lock)
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    {
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      if (session->lockGlobalReadLock())
 
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      if (session().lockGlobalReadLock())
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      {
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        return true; /* Killed */
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      }
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      result= session->close_cached_tables(tables, true, true);
 
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      result= session().close_cached_tables(tables, true, true);
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      if (session->makeGlobalReadLockBlockCommit()) /* Killed */
 
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      if (session().makeGlobalReadLockBlockCommit()) /* Killed */
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      {
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        /* Don't leave things in a half-locked state */
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        session->unlockGlobalReadLock();
 
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        session().unlockGlobalReadLock();
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        return true;
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      }
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    }
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    else
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    {
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      result= session->close_cached_tables(tables, true, false);
 
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      result= session().close_cached_tables(tables, true, false);
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    }
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  }
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  if (session && flush_status)
 
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  if (&session() && flush_status)
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  {
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    session->refresh_status();
 
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    session().refresh_status();
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  }
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  if (session && flush_global_status)
 
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  if (&session() && flush_global_status)
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  {
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    memset(&current_global_counters, 0, sizeof(current_global_counters));
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    plugin::Logging::resetStats(session);
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    session->refresh_status();
 
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    plugin::Logging::resetStats(&session());
 
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    session().refresh_status();
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  }
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  return result;