job.h

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// -*- mode: c++; tab-width: 4; indent-tabs-mode: t; c-file-style: "stroustrup"; -*-
// vi:set ts=4 sts=4 sw=4 noet cino+=(0 :
// Copyright 2011, The TPIE development team
// 
// This file is part of TPIE.
// 
// TPIE is free software: you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License as published by the
// Free Software Foundation, either version 3 of the License, or (at your
// option) any later version.
// 
// TPIE 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 Lesser General Public
// License for more details.
// 
// You should have received a copy of the GNU Lesser General Public License
// along with TPIE.  If not, see <http://www.gnu.org/licenses/>

#ifndef __TPIE_JOB_MANAGER_H__
#define __TPIE_JOB_MANAGER_H__


#include <stddef.h>
#include <condition_variable>
#include <tpie/types.h>

namespace tpie {

class job {

    enum job_state { job_idle, job_enqueued, job_running };

public:

    job();

    virtual ~job() {}

    virtual void operator()() = 0;

    void join();

    bool is_done();

    void enqueue(job * parent = 0);

    void run();

protected:

    virtual void on_done() {}

private:

    size_t m_dependencies;
    job * m_parent;
    job_state m_state;

    std::condition_variable m_done;

    void done();

    friend class job_manager;
};

memory_size_type default_worker_count();

void init_job();

void finish_job();

} // namespace tpie

#endif