/**
*    Copyright (C) 2008 10gen Inc.
*
*    This program is free software: you can redistribute it and/or  modify
*    it under the terms of the GNU Affero General Public License, version 3,
*    as published by the Free Software Foundation.
*
*    This program is distributed in the hope that it will be useful,b
*    but WITHOUT ANY WARRANTY; without even the implied warranty of
*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*    GNU Affero General Public License for more details.
*
*    You should have received a copy of the GNU Affero General Public License
*    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*
*    As a special exception, the copyright holders give permission to link the
*    code of portions of this program with the OpenSSL library under certain
*    conditions as described in each individual source file and distribute
*    linked combinations including the program with the OpenSSL library. You
*    must comply with the GNU Affero General Public License in all respects
*    for all of the code used other than as permitted herein. If you modify
*    file(s) with this exception, you may extend this exception to your
*    version of the file(s), but you are not obligated to do so. If you do not
*    wish to do so, delete this exception statement from your version. If you
*    delete this exception statement from all source files in the program,
*    then also delete it in the license file.
*/

#pragma once

#include <deque>

#include <boost/thread/condition.hpp>
#include <boost/function.hpp>

#include "mongo/util/concurrency/mutex.h"
#include "mongo/util/concurrency/task.h"

namespace mongo {

    namespace task {

        typedef boost::function<void()> lam;

        /** typical usage is: task::fork( new Server("threadname") ); */
        class Server : public Task {
        public:
            /** send a message to the port */
            void send(lam);

            Server(const std::string& name) : m("server"), _name(name), rq(false) { }
            virtual ~Server() { }

            /** send message but block until function completes */
            void call(const lam&);

            void requeue() { rq = true; }

        protected:
            // REMINDER : for use in mongod, you will want to have this call Client::initThread().
            virtual void starting() { }

        private:
            virtual bool initClient() { return true; }
            virtual string name() const { return _name; }
            void doWork();
            deque<lam> d;
            mongo::mutex m;
            boost::condition c;
            string _name;
            bool rq;
        };

    }

}
