onstartup.h

//==========================================================================
//  ONSTARTUP.H - part of
//                     OMNeT++/OMNEST
//            Discrete System Simulation in C++
//
//
//  EXECUTE_ON_STARTUP macro and supporting class
//
//==========================================================================

/*--------------------------------------------------------------*
  Copyright (C) 1992-2008 Andras Varga
  Copyright (C) 2006-2008 OpenSim Ltd.

  This file is distributed WITHOUT ANY WARRANTY. See the file
  `license' for details on this and other legal matters.
*--------------------------------------------------------------*/

#ifndef __ONSTARTUP_H
#define __ONSTARTUP_H

#include <vector>
#include <map>
#include "simkerneldefs.h"
#include "cownedobject.h"

NAMESPACE_BEGIN


// Generating identifiers unique for this file. See MSVC Help for __COUNTER__ for more info.
#define __OPPCONCAT1(x,y) x##y
#define __OPPCONCAT2(prefix,line) __OPPCONCAT1(prefix,line)
#define MAKE_UNIQUE_WITHIN_FILE(prefix) __OPPCONCAT2(prefix,__LINE__)

// helpers for EXECUTE_ON_STARTUP
// IMPORTANT: if you change "__onstartup_func_" below, linkall.pl must also be updated!
#define __ONSTARTUP_FUNC  MAKE_UNIQUE_WITHIN_FILE(__onstartup_func_)
#define __ONSTARTUP_OBJ   MAKE_UNIQUE_WITHIN_FILE(__onstartup_obj_)

// helper
#define __FILEUNIQUENAME__  MAKE_UNIQUE_WITHIN_FILE(__uniquename_)

#define EXECUTE_ON_STARTUP(CODE)  \
  namespace { \
    void __ONSTARTUP_FUNC() {CODE;} \
    static CodeFragments __ONSTARTUP_OBJ(__ONSTARTUP_FUNC, CodeFragments::STARTUP); \
  };

//NOTE: implementation reuses some of the *startup* macros
#define EXECUTE_ON_SHUTDOWN(CODE)  \
  namespace { \
    void __ONSTARTUP_FUNC() {CODE;} \
    static CodeFragments __ONSTARTUP_OBJ(__ONSTARTUP_FUNC, CodeFragments::SHUTDOWN); \
  };

class SIM_API CodeFragments
{
  public:
    enum Type {STARTUP, SHUTDOWN};
  private:
    Type type;
    void (*code)();
    CodeFragments *next;
    static CodeFragments *head;
  public:
    CodeFragments(void (*code)(), Type type);
    ~CodeFragments();
    static void executeAll(Type type);
};

NAMESPACE_END


#endif