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win_mutex.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\asio\detail\win_mutex.hpp
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// // win_mutex.hpp // ~~~~~~~~~~~~~ // // Copyright (c) 2003-2008 Christopher M. Kohlhoff (chris at kohlhoff dot com) // // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) // #ifndef BOOST_ASIO_DETAIL_WIN_MUTEX_HPP #define BOOST_ASIO_DETAIL_WIN_MUTEX_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include
#include
#include
#include
#include
#if defined(BOOST_WINDOWS) #include
#include
#include
#include
#include
#include
#include
namespace boost { namespace asio { namespace detail { class win_mutex : private noncopyable { public: typedef boost::asio::detail::scoped_lock
scoped_lock; // Constructor. win_mutex() { int error = do_init(); if (error != 0) { boost::system::system_error e( boost::system::error_code(error, boost::asio::error::get_system_category()), "mutex"); boost::throw_exception(e); } } // Destructor. ~win_mutex() { ::DeleteCriticalSection(&crit_section_); } // Lock the mutex. void lock() { int error = do_lock(); if (error != 0) { boost::system::system_error e( boost::system::error_code(error, boost::asio::error::get_system_category()), "mutex"); boost::throw_exception(e); } } // Unlock the mutex. void unlock() { ::LeaveCriticalSection(&crit_section_); } private: // Initialisation must be performed in a separate function to the constructor // since the compiler does not support the use of structured exceptions and // C++ exceptions in the same function. int do_init() { #if defined(__MINGW32__) // Not sure if MinGW supports structured exception handling, so for now // we'll just call the Windows API and hope. ::InitializeCriticalSection(&crit_section_); return 0; #else __try { ::InitializeCriticalSection(&crit_section_); } __except(GetExceptionCode() == STATUS_NO_MEMORY ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) { return ERROR_OUTOFMEMORY; } return 0; #endif } // Locking must be performed in a separate function to lock() since the // compiler does not support the use of structured exceptions and C++ // exceptions in the same function. int do_lock() { #if defined(__MINGW32__) // Not sure if MinGW supports structured exception handling, so for now // we'll just call the Windows API and hope. ::EnterCriticalSection(&crit_section_); return 0; #else __try { ::EnterCriticalSection(&crit_section_); } __except(GetExceptionCode() == STATUS_INVALID_HANDLE || GetExceptionCode() == STATUS_NO_MEMORY ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) { if (GetExceptionCode() == STATUS_NO_MEMORY) return ERROR_OUTOFMEMORY; return ERROR_INVALID_HANDLE; } return 0; #endif } ::CRITICAL_SECTION crit_section_; }; } // namespace detail } // namespace asio } // namespace boost #endif // defined(BOOST_WINDOWS) #include
#endif // BOOST_ASIO_DETAIL_WIN_MUTEX_HPP
win_mutex.hpp
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