monero/contrib/epee/include/reg_exp_definer.h

// Copyright (c) 2014, The Monero Project
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
//    of conditions and the following disclaimer in the documentation and/or other
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// Parts of this file are originally copyright (c) 2006-2013, Andrey N. Sabelnikov

#ifndef _REG_EXP_DEFINER_H_
#define _REG_EXP_DEFINER_H_

#include <boost/interprocess/detail/atomic.hpp>


namespace epee
{
  class global_regexp_critical_section
  {
  private:
    mutable critical_section regexp_lock;
  public:
    global_regexp_critical_section(){}
    critical_section& get_lock()const {return regexp_lock;}
  };

  const static global_regexp_critical_section gregexplock;

#define STATIC_REGEXP_EXPR_1(var_name, xpr_text, reg_exp_flags) \
	static volatile uint32_t regexp_initialized_1 = 0;\
	volatile uint32_t local_is_initialized_1 = regexp_initialized_1;\
	if(!local_is_initialized_1)\
	gregexplock.get_lock().lock();\
	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
	if(!local_is_initialized_1)\
{\
	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_1, 1);\
	gregexplock.get_lock().unlock();\
}

#define STATIC_REGEXP_EXPR_2(var_name, xpr_text, reg_exp_flags) \
	static volatile uint32_t regexp_initialized_2 = 0;\
	volatile uint32_t local_is_initialized_2 = regexp_initialized_2;\
	if(!local_is_initialized_2)\
	gregexplock.get_lock().lock().lock();\
	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
	if(!local_is_initialized_2)\
{\
	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_2, 1);\
	gregexplock.get_lock().lock().unlock();\
}

#define STATIC_REGEXP_EXPR_3(var_name, xpr_text, reg_exp_flags) \
	static volatile uint32_t regexp_initialized_3 = 0;\
	volatile uint32_t local_is_initialized_3 = regexp_initialized_3;\
	if(!local_is_initialized_3)\
	gregexplock.get_lock().lock().lock();\
	static const boost::regex	var_name(xpr_text , reg_exp_flags);\
	if(!local_is_initialized_3)\
{\
	boost::interprocess::ipcdetail::atomic_write32(&regexp_initialized_3, 1);\
	gregexplock.get_lock().lock().unlock();\
}
}

#endif //_REG_EXP_DEFINER_H_