log.h

/*
 * log.h
 * This file is part of dbPager Classes Library (DCL)
 *
 * Copyright (c) 2009 Dennis Prochko <wolfsoft@mail.ru>
 *
 * DCL 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 version 3.
 *
 * DCL 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 DCL; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

#ifndef _LOG_H_
#define _LOG_H_

#include <iostream>
#include <queue>
#include <string>

#include <dcl/event.h>
#include <dcl/strutils.h>
#include <dcl/thread.h>

namespace dbp {


class log {
public:

        log(std::ostream &out = std::clog, int verbose = 0);

        virtual ~log();

        void operator()(int level, const std::string &message);
private:
        int _verbose;
        bool is_terminated;
        std::ostream &_out;
        // log buffer
        typedef std::queue<std::string> log_buffer;
        log_buffer buf;
        // working thread
        thread t;
        // synchronizer objects
        mutex _mlock;
        event _event;
        // logging function
        void logging(thread_int&);
};

} // namespace

#endif /*_LOG_H_*/