//////////////////////////////////////////////////////////////////////////////
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//
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// (C) Copyright Ion Gaztanaga 2011-2012. Distributed under the Boost
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// Software License, Version 1.0. (See accompanying file
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// LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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// See http://www.boost.org/libs/interprocess for documentation.
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//
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//////////////////////////////////////////////////////////////////////////////
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#ifndef BOOST_INTERPROCESS_DETAIL_WINAPI_WRAPPER_COMMON_HPP
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#define BOOST_INTERPROCESS_DETAIL_WINAPI_WRAPPER_COMMON_HPP
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#ifndef BOOST_CONFIG_HPP
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# include <boost/config.hpp>
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#endif
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#
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#if defined(BOOST_HAS_PRAGMA_ONCE)
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# pragma once
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#endif
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#include <boost/interprocess/detail/config_begin.hpp>
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#include <boost/interprocess/detail/workaround.hpp>
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#include <boost/interprocess/detail/win32_api.hpp>
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#include <boost/interprocess/detail/posix_time_types_wrk.hpp>
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#include <boost/interprocess/errors.hpp>
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#include <boost/interprocess/exceptions.hpp>
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#include <limits>
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namespace boost {
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namespace interprocess {
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namespace ipcdetail {
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inline bool do_winapi_wait(void *handle, unsigned long dwMilliseconds)
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{
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unsigned long ret = winapi::wait_for_single_object(handle, dwMilliseconds);
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if(ret == winapi::wait_object_0){
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return true;
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}
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else if(ret == winapi::wait_timeout){
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return false;
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}
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else if(ret == winapi::wait_abandoned){ //Special case for orphaned mutexes
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winapi::release_mutex(handle);
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throw interprocess_exception(owner_dead_error);
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}
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else{
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error_info err = system_error_code();
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throw interprocess_exception(err);
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}
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}
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inline bool winapi_wrapper_timed_wait_for_single_object(void *handle, const boost::posix_time::ptime &abs_time)
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{
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//Windows uses relative wait times so check for negative waits
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//and implement as 0 wait to allow try-semantics as POSIX mandates.
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unsigned long time = 0u;
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if (abs_time.is_pos_infinity()){
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time = winapi::infinite_time;
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}
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else {
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const boost::posix_time::ptime cur_time = microsec_clock::universal_time();
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if(abs_time > cur_time){
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time = (abs_time - cur_time).total_milliseconds();
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}
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}
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return do_winapi_wait(handle, time);
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}
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inline void winapi_wrapper_wait_for_single_object(void *handle)
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{
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(void)do_winapi_wait(handle, winapi::infinite_time);
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}
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inline bool winapi_wrapper_try_wait_for_single_object(void *handle)
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{
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return do_winapi_wait(handle, 0u);
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}
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} //namespace ipcdetail {
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} //namespace interprocess {
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} //namespace boost {
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#include <boost/interprocess/detail/config_end.hpp>
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#endif //BOOST_INTERPROCESS_DETAIL_WINAPI_WRAPPER_COMMON_HPP
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