/*
 *  Baltisot
 *  Copyright (C) 1999-2007 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 __TASKMAN_H__
#define __TASKMAN_H__

#ifdef _WIN32
typedef int sigset_t;
#endif

#include <signal.h>
#include <Task.h>
#include <vector>

class TaskMan : public Base {
  public:
    static void AddTask(Task *);
    static std::vector<Task *>::iterator FindTask(Task *) throw (GeneralException);
    static void RemoveFromWatches(Task *);
    static void RemoveTimeout(Task *);
    static void Init() throw (GeneralException);
    static void MainLoop() throw (GeneralException);
    static void WaitFor(Handle *, Task *, int = 0);
    static void WaitFor(pid_t, Task *, int = 0);
    static void WaitFor(const timeval &, Task *, int = 0);
    static int GotChild(pid_t, int);
    static void CleanChildren();
    static void Stop();
    static int Event();
    static Task * Etask();
    static Handle * Ehandle();
    static int Eprocess();
    static int Estatus();
    static void SigChild();
    
    static std::vector<Task *>::iterator begin();
    static std::vector<Task *>::iterator end();
    static int nb_tasks();
    static int nb_zombies();

  private:
    class w4ha_t {
      public:
          w4ha_t(Handle * aha, int aflags, Task * aT) : ha(aha), flags(aflags), dirty(true), T(aT) { }
        Handle * ha;
        int flags;
	bool dirty;
	Task * T;
    };

    class w4pr_t {
      public:
          w4pr_t(pid_t apr, Task * aT) : pr(apr), flag(0), status(0), T(aT) { }
        pid_t pr;
	int flag, status;
	Task * T;
    };

    class w4to_t {
      public:
          w4to_t(const timeval & ato, int aflags, Task * aT) : to(ato), flags(aflags), T(aT) { }
        timeval to;
        int flags;
	Task * T;
    };
    typedef std::vector<Task *> TaskList_t;

    static TaskList_t TaskList;
    static TaskList_t Zombies;
    static int number;
    static bool inited;
    static std::vector<w4ha_t> w4ha;
    static std::vector<w4pr_t> w4pr;
    static std::vector<w4to_t> w4to;
    static bool stopped;
    static int event;
    static Task * etask;
    static Handle * ehandle;
    static int eprocess, estatus;
    static sigset_t sigchildset;
    static int got_sigchild;
    static bool CheckDead(Task *);
};

#endif