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Diffstat (limited to 'contrib/epee/include/reg_exp_definer.h')
| -rw-r--r-- | contrib/epee/include/reg_exp_definer.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/contrib/epee/include/reg_exp_definer.h b/contrib/epee/include/reg_exp_definer.h new file mode 100644 index 000000000..b05e1a9ae --- /dev/null +++ b/contrib/epee/include/reg_exp_definer.h @@ -0,0 +1,84 @@ +// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of the Andrey N. Sabelnikov nor the +// names of its contributors may be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY +// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// + + +#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 boost::uint32_t regexp_initialized_1 = 0;\ + volatile boost::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(®exp_initialized_1, 1);\ + gregexplock.get_lock().unlock();\ +} + +#define STATIC_REGEXP_EXPR_2(var_name, xpr_text, reg_exp_flags) \ + static volatile boost::uint32_t regexp_initialized_2 = 0;\ + volatile boost::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(®exp_initialized_2, 1);\ + gregexplock.get_lock().lock().unlock();\ +} + +#define STATIC_REGEXP_EXPR_3(var_name, xpr_text, reg_exp_flags) \ + static volatile boost::uint32_t regexp_initialized_3 = 0;\ + volatile boost::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(®exp_initialized_3, 1);\ + gregexplock.get_lock().lock().unlock();\ +} +} + +#endif //_REG_EXP_DEFINER_H_ |