Drizzled Public API Documentation

cache.cc
00001 /* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
00002  *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
00003  *
00004  *  Copyright (C) 2010 Brian Aker
00005  *
00006  *  This program is free software; you can redistribute it and/or modify
00007  *  it under the terms of the GNU General Public License as published by
00008  *  the Free Software Foundation; either version 2 of the License, or
00009  *  (at your option) any later version.
00010  *
00011  *  This program is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  *  GNU General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU General Public License
00017  *  along with this program; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #include <config.h>
00022 #include <drizzled/pthread_globals.h>
00023 #include <drizzled/message/cache.h>
00024 #include <drizzled/util/find_ptr.h>
00025 
00026 namespace drizzled {
00027 namespace message {
00028 
00029 table::shared_ptr Cache::find(const identifier::Table &identifier)
00030 {
00031   boost_unique_lock_t scoped_lock(_access);
00032   if (Map::mapped_type* ptr= find_ptr(cache, identifier.getKey()))
00033     return *ptr;
00034   return table::shared_ptr();
00035 }
00036 
00037 void Cache::erase(const identifier::Table &identifier)
00038 {
00039   boost_unique_lock_t scoped_lock(_access);
00040   cache.erase(identifier.getKey());
00041 }
00042 
00043 bool Cache::insert(const identifier::Table &identifier, table::shared_ptr share)
00044 {
00045   boost_unique_lock_t scoped_lock(_access);
00046   return cache.insert(std::make_pair(identifier.getKey(), share)).second;
00047 }
00048 
00049 bool Cache::insert(const identifier::Table &identifier, drizzled::message::Table &message)
00050 {
00051   return insert(identifier, table::shared_ptr(new message::Table(message)));
00052 }
00053 
00054 } // namespace message
00055 } // namespace drizzled