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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/logic/tribool.hpp>
#include <boost/unordered/unordered_set.hpp>
#include <string>
#include "drizzled/session.h"
#include "drizzled/util/string.h"
#ifndef PLUGIN_USER_LOCKS_LOCKS_H
#define PLUGIN_USER_LOCKS_LOCKS_H
namespace user_locks {
const size_t LARGEST_LOCK_NAME= 64;
class Locks
{
public:
struct lock_st {
drizzled::session_id_t id;
lock_st(drizzled::session_id_t id_arg) :
id(id_arg)
{
}
};
typedef boost::shared_ptr<lock_st> lock_st_ptr;
typedef boost::unordered_map<user_locks::Key, lock_st_ptr> LockMap;
static Locks &getInstance(void)
{
static Locks instance;
return instance;
}
bool lock(drizzled::session_id_t id_arg, const user_locks::Key &arg);
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);
boost::tribool release(const user_locks::Key &arg, drizzled::session_id_t &id_arg);
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 cond;
LockMap lock_map;
};
} /* namespace user_locks */
#endif /* PLUGIN_USER_LOCKS_LOCKS_H */
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