tprocess.h

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// -*-C++-*-
//
//  This file is part of SSim, a simple discrete-event simulator.
//  See http://www.inf.usi.ch/carzaniga/ssim/
//  
//  Copyright (C) 2003-2005 University of Colorado
//  Copyright (C) 2012 Antonio Carzaniga
//  
//  Authors: Antonio Carzaniga <[email protected]>
//           See AUTHORS for full details.
//  
//  SSim 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 3 of the License, or (at your
//  option) any later version.
//  
//  SSim 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 SSim.  If not, see <http://www.gnu.org/licenses/>.
//
#ifndef _tprocess_h
#define _tprocess_h

#ifndef TPROCESS_IMPL
#include "tprocessconf.h"
#endif

#if TPROCESS_IMPL != 0

#if TPROCESS_IMPL==1
#include <ucontext.h>
#else
#include <setjmp.h>
#endif

#include <siena/ssim.h>

namespace ssim {

class TProcess : public Process {
public:
    TProcess();

    TProcess(unsigned long stacksize);

    virtual ~TProcess();

    virtual void main() = 0;

    static unsigned long DefaultStackSize;

    class Timeout : public Event { };

    static const Event * wait_for_event(Time timeout = INIT_TIME);

private:
    virtual void init(void);
    virtual void process_event(const Event * msg);
    virtual void stop(void);

#if TPROCESS_IMPL==1
    ucontext_t running_ctx;
#else
    jmp_buf running_ctx; 
#endif
    char * mystack;
    unsigned long mystack_size;

    const Event * ev;

#if TPROCESS_IMPL==1
    static void starter();
#else
    static void starter(int);
#endif
    void pause();
    void resume();
};

}; // end namespace ssim

#endif /* TPROCESS_IMPL!=VOID */

#endif /* _ssim_h */