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panda/src/express/threadDummyImpl.h

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// Filename: threadDummyImpl.h
// Created by:  drose (09Aug02)
//
////////////////////////////////////////////////////////////////////
//
// PANDA 3D SOFTWARE
// Copyright (c) 2001, Disney Enterprises, Inc.  All rights reserved
//
// All use of this software is subject to the terms of the Panda 3d
// Software license.  You should have received a copy of this license
// along with this source code; you will also find a current copy of
// the license at http://www.panda3d.org/license.txt .
//
// To contact the maintainers of this program write to
// panda3d@yahoogroups.com .
//
////////////////////////////////////////////////////////////////////

#ifndef THREADDUMMYIMPL_H
#define THREADDUMMYIMPL_H

#include "pandabase.h"
#include "selectThreadImpl.h"

#ifdef THREAD_DUMMY_IMPL

#include "notify.h"
#include "threadPriority.h"
#include "pmutex.h"

#include <prthread.h>

class Thread;

// The Irix system headers may define this as a macro.  Get it out of
// the way.
#ifdef atomic_set
#undef atomic_set
#endif

////////////////////////////////////////////////////////////////////
//       Class : ThreadDummyImpl
// Description : A fake thread implementation for single-threaded
//               applications.  This simply fails whenever you try to
//               start a thread.
////////////////////////////////////////////////////////////////////
class EXPCL_PANDAEXPRESS ThreadDummyImpl {
public:
  INLINE ThreadDummyImpl(Thread *parent_obj);
  INLINE ~ThreadDummyImpl();

  INLINE bool start(ThreadPriority priority, bool global, bool joinable);
  INLINE void join();

  INLINE static void prepare_for_exit();

  INLINE static Thread *get_current_thread();
  INLINE static bool is_threading_supported();
  INLINE static void sleep(double seconds);

  INLINE int atomic_inc(int &var);
  INLINE int atomic_dec(int &var);
  INLINE int atomic_set(int &var, int new_value);
};

#include "threadDummyImpl.I"

#endif // THREAD_DUMMY_IMPL

#endif

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