reentrant.h

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/*_############################################################################
  _## 
  _##  reentrant.h  
  _##
  _##  SNMP++ v3.3
  _##  -----------------------------------------------
  _##  Copyright (c) 2001-2013 Jochen Katz, Frank Fock
  _##
  _##  This software is based on SNMP++2.6 from Hewlett Packard:
  _##  
  _##    Copyright (c) 1996
  _##    Hewlett-Packard Company
  _##  
  _##  ATTENTION: USE OF THIS SOFTWARE IS SUBJECT TO THE FOLLOWING TERMS.
  _##  Permission to use, copy, modify, distribute and/or sell this software 
  _##  and/or its documentation is hereby granted without fee. User agrees 
  _##  to display the above copyright notice and this license notice in all 
  _##  copies of the software and any documentation of the software. User 
  _##  agrees to assume all liability for the use of the software; 
  _##  Hewlett-Packard and Jochen Katz make no representations about the 
  _##  suitability of this software for any purpose. It is provided 
  _##  "AS-IS" without warranty of any kind, either express or implied. User 
  _##  hereby grants a royalty-free license to any and all derivatives based
  _##  upon this software code base. 
  _##  
  _##########################################################################*/
// $Id: reentrant.h 2359 2013-05-09 20:07:01Z fock $

#ifndef _reentrant_h_
#define _reentrant_h_

#include "snmp_pp/config_snmp_pp.h"
#include "snmp_pp/smi.h"

#ifdef _THREADS
#ifdef WIN32
#include <process.h>
#elif defined (CPU) && CPU == PPC603
#include <semLib.h> 
#else
#include <pthread.h>
#endif
#endif

#ifdef SNMP_PP_NAMESPACE
namespace Snmp_pp {
#endif

class DLLOPT SnmpSynchronized {

 public:
  SnmpSynchronized();
  virtual ~SnmpSynchronized();
#ifdef _THREADS
#ifdef WIN32
  CRITICAL_SECTION      _mutex;
#elif defined (CPU) && CPU == PPC603
  SEM_ID                _mutex;
#else
  pthread_mutex_t       _mutex;
#endif
#endif
  void lock();
  void unlock();
};

class DLLOPT SnmpSynchronize {

 public:
  SnmpSynchronize(SnmpSynchronized& sync) : s(sync) { s.lock(); };
  ~SnmpSynchronize() { s.unlock(); }

 protected:
  SnmpSynchronized& s;

};

#define REENTRANT(x) { SnmpSynchronize _synchronize(*this); x }

#ifdef SNMP_PP_NAMESPACE
} // end of namespace Snmp_pp
#endif 

#endif