threads.hpp

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// -*- Mode : c++ -*-
//
// SUMMARY  :      
// USAGE    :        
// ORG      : 
// AUTHOR   : Antoine Le Hyaric -
// E-MAIL   : [e-mail]
//

/*
 
 This file is part of Freefem++
 
 Freefem++ 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 2.1 of the License, or
 (at your option) any later version.
 
 Freefem++  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 Freefem++; if not, write to the Free Software
 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
// Threads for Linux and Microsoft Win32
// -------------------------------------

// Antoine Le Hyaric - LJLL Paris 6 - [e-mail] - 21/10/04
// $Id: threads.hpp,v 1.6 2006-09-29 20:30:15 hecht Exp $

#ifndef THREADS_HPP
#define THREADS_HPP

#include <string>
using namespace std;
#ifdef __MINGW32__
#include <windows.h>
#else
#include <pthread.h>
#include <semaphore.h>
#endif

class Thread{
public:

#ifdef __MINGW32__
#define THREADFUNC(f,parm) unsigned int (__stdcall f)(Thread::Parm parm)
  typedef LPVOID Parm;
  typedef HANDLE Id;
#else
#define THREADFUNC(f,parm) void* f(Thread::Parm parm)
  typedef void* Parm;
  typedef pthread_t Id;
#endif

  // Mingw is a little puzzled if there are no brackets around
  // __stdcall
  static Id Start(THREADFUNC(f,),Parm p);
  static void Wait(Id tid);
  static void Exit(); // From inside the thread
  static void Kill(Id tid);
};

class Mutex{
public:

  Mutex();
  ~Mutex();

  void Wait(
#ifndef NDEBUG
	    const char *f,const int l
#endif
	    );

  void Free();

  // Can only work in "assert(IsLocked())" (and even then only
  // statistically), not in "assert(!IsLocked())". But this is the
  // most useful format anyway.
#ifndef NDEBUG
  bool IsLocked() const;
#endif

protected:
#ifdef __MINGW32__
    HANDLE mutex;
#else
    pthread_mutex_t mutex;
#endif

  // Just for checking.
#ifndef NDEBUG
  bool locked;

  // Fichier et ligne o