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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 <boost/thread/mutex.hpp>
#include <boost/thread/condition_variable.hpp>
#include <boost/unordered_map.hpp>
#include <boost/unordered/unordered_set.hpp>
#include <plugin/user_locks/lock.h>
#include <string>
#include <drizzled/session.h>
#pragma once
namespace user_locks {
namespace locks {
enum return_t {
SUCCESS,
NOT_FOUND,
NOT_OWNED_BY
};
} /* locks user_locks */
const size_t LARGEST_LOCK_NAME= 64;
class Locks
{
public:
typedef boost::unordered_map<user_locks::Key, user_locks::Lock::shared_ptr> LockMap;
static Locks &getInstance(void)
{
static Locks instance;
return instance;
}
void waitCreate(int64_t wait_for= 2); // Default is to wait 2 seconds before returning
bool lock(drizzled::session_id_t id_arg, const user_locks::Key &arg, int64_t wait_for= 0);
bool lock(drizzled::session_id_t id_arg, const user_locks::Keys &arg);
locks::return_t release(const user_locks::Key &arg, drizzled::session_id_t &id_arg, bool and_wait= false);
bool isFree(const user_locks::Key &arg);
bool isUsed(const user_locks::Key &arg, drizzled::session_id_t &id_arg);
void Copy(LockMap &lock_map);
private:
boost::mutex mutex;
boost::condition_variable create_cond; // Signal next
boost::condition_variable release_cond;
LockMap lock_map;
};
} /* namespace user_locks */
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