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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <boost/bind.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/shared_mutex.hpp>
#include <drizzled/session.h>
#include <drizzled/identifier/table.h>
#include <drizzled/definition/cache.h>
#include <drizzled/table/instance.h>
#include <drizzled/util/find_ptr.h>
namespace drizzled {
namespace definition {
Cache::Map Cache::cache;
boost::mutex Cache::_mutex;
table::instance::Shared::shared_ptr Cache::find(const identifier::Table::Key &key)
{
boost::mutex::scoped_lock scopedLock(_mutex);
if (Map::mapped_type* ptr= find_ptr(cache, key))
return *ptr;
return table::instance::Shared::shared_ptr();
}
void Cache::erase(const identifier::Table::Key &key)
{
boost::mutex::scoped_lock scopedLock(_mutex);
cache.erase(key);
}
bool Cache::insert(const identifier::Table::Key &key, table::instance::Shared::shared_ptr share)
{
boost::mutex::scoped_lock scopedLock(_mutex);
std::pair<Map::iterator, bool> ret= cache.insert(std::make_pair(key, share));
return ret.second;
}
void Cache::CopyFrom(drizzled::table::instance::Shared::vector &vector)
{
boost::mutex::scoped_lock scopedLock(_mutex);
vector.reserve(definition::Cache::size());
std::transform(cache.begin(), cache.end(), std::back_inserter(vector), boost::bind(&Map::value_type::second, _1));
assert(vector.size() == cache.size());
}
} /* namespace definition */
} /* namespace drizzled */
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