86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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// * Neither the name of the Andrey N. Sabelnikov nor the
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// names of its contributors may be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
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// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef _REG_EXP_DEFINER_H_
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#define _REG_EXP_DEFINER_H_
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#include <atomic>
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#include <boost/regex.hpp>
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#include "syncobj.h"
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namespace epee
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{
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class global_regexp_critical_section
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{
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private:
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mutable critical_section regexp_lock;
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public:
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global_regexp_critical_section(){}
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critical_section& get_lock()const {return regexp_lock;}
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};
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const static global_regexp_critical_section gregexplock;
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#define STATIC_REGEXP_EXPR_1(var_name, xpr_text, reg_exp_flags) \
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static std::atomic<bool> regexp_initialized_1(false);\
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volatile uint32_t local_is_initialized_1 = regexp_initialized_1;\
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if(!local_is_initialized_1)\
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gregexplock.get_lock().lock();\
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static const boost::regex var_name(xpr_text , reg_exp_flags);\
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if(!local_is_initialized_1)\
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{\
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regexp_initialized_1 = true;\
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gregexplock.get_lock().unlock();\
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}
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#define STATIC_REGEXP_EXPR_2(var_name, xpr_text, reg_exp_flags) \
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static std::atomic<bool> regexp_initialized_2(false);\
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volatile uint32_t local_is_initialized_2 = regexp_initialized_2;\
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if(!local_is_initialized_2)\
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gregexplock.get_lock().lock().lock();\
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static const boost::regex var_name(xpr_text , reg_exp_flags);\
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if(!local_is_initialized_2)\
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{\
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regexp_initialized_2 = true;\
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gregexplock.get_lock().lock().unlock();\
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}
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#define STATIC_REGEXP_EXPR_3(var_name, xpr_text, reg_exp_flags) \
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static std::atomic<bool> regexp_initialized_3(false);\
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volatile uint32_t local_is_initialized_3 = regexp_initialized_3;\
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if(!local_is_initialized_3)\
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gregexplock.get_lock().lock().lock();\
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static const boost::regex var_name(xpr_text , reg_exp_flags);\
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if(!local_is_initialized_3)\
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{\
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regexp_initialized_3 = true;\
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gregexplock.get_lock().lock().unlock();\
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}
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}
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#endif //_REG_EXP_DEFINER_H_
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