/*
 *  Baltisot
 *  Copyright (C) 1999-2008 Nicolas "Pixel" Noble
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef __TASK_H__
#define __TASK_H__

#ifndef _WIN32
#include <unistd.h>
#include <sys/time.h>
#else
#include <winsock.h>
#endif
#include <vector>
#include <Exceptions.h>
#include <Handle.h>

#undef E_HANDLE
#undef Yield

class Task : public Base {
  public:
    enum {
        EVT_BURST = 0,
        EVT_HANDLE,
        EVT_PROCESS,
        EVT_TIMEOUT,
        EVT_TASK,
    };
    enum {
        TASK_ON_HOLD = 0,
        TASK_DONE,
        TASK_BURST,
    };
    enum {
        W4_STICKY = 1,
        W4_READING = 2,
        W4_WRITING = 4,
    };
      Task();
      virtual ~Task();
    virtual String GetName();
    int Run();
    int DryRun();
    int GetState();
    void Suspend(int = -1) throw (GeneralException);
    void WaitFor(Task *);
    void WaitFor(Handle *, int = 0);
    void WaitFor(pid_t);
    void WaitFor(const timeval &, int = 0);
    void Yield();
    bool Yielded();
    void Unyield();
    Task * WaitedBy();
    void SetBurst();
    void Stop();
    void Restart();
    bool IsStopped();
    void RemoveFromWatches();
    void RemoveTimeout();
    Handle * BurstHandle;

  protected:
    virtual int Do() throw (GeneralException);
    int current;
    
  private:
    class wbta_t {
      public:
          wbta_t(Task * ata) : ta(ata) { }
	Task * ta;
    };

    int state;
    bool stopped;
    bool suspended;
    bool yielded;
    Task * wbta;
    Task * wta;
};

#endif