diff options
Diffstat (limited to '3rdParty/Boost/src/boost/asio/detail/impl/win_static_mutex.ipp')
-rw-r--r-- | 3rdParty/Boost/src/boost/asio/detail/impl/win_static_mutex.ipp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/3rdParty/Boost/src/boost/asio/detail/impl/win_static_mutex.ipp b/3rdParty/Boost/src/boost/asio/detail/impl/win_static_mutex.ipp new file mode 100644 index 0000000..3ec104d --- /dev/null +++ b/3rdParty/Boost/src/boost/asio/detail/impl/win_static_mutex.ipp @@ -0,0 +1,120 @@ +// +// detail/impl/win_static_mutex.ipp +// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2012 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_IMPL_WIN_STATIC_MUTEX_IPP +#define BOOST_ASIO_DETAIL_IMPL_WIN_STATIC_MUTEX_IPP + +#if defined(_MSC_VER) && (_MSC_VER >= 1200) +# pragma once +#endif // defined(_MSC_VER) && (_MSC_VER >= 1200) + +#include <boost/asio/detail/config.hpp> + +#if defined(BOOST_WINDOWS) + +#include <cstdio> +#include <boost/asio/detail/throw_error.hpp> +#include <boost/asio/detail/win_static_mutex.hpp> +#include <boost/asio/error.hpp> + +#include <boost/asio/detail/push_options.hpp> + +namespace boost { +namespace asio { +namespace detail { + +void win_static_mutex::init() +{ + int error = do_init(); + boost::system::error_code ec(error, + boost::asio::error::get_system_category()); + boost::asio::detail::throw_error(ec, "static_mutex"); +} + +int win_static_mutex::do_init() +{ + using namespace std; // For sprintf. + wchar_t mutex_name[128]; +#if BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE) + swprintf_s(mutex_name, 128, +#else // BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE) + swprintf(mutex_name, +#endif // BOOST_WORKAROUND(BOOST_MSVC, >= 1400) && !defined(UNDER_CE) + L"asio-58CCDC44-6264-4842-90C2-F3C545CB8AA7-%u-%p", + static_cast<unsigned int>(::GetCurrentProcessId()), this); + + HANDLE mutex = ::CreateMutexW(0, TRUE, mutex_name); + DWORD last_error = ::GetLastError(); + if (mutex == 0) + return ::GetLastError(); + + if (last_error == ERROR_ALREADY_EXISTS) + ::WaitForSingleObject(mutex, INFINITE); + + if (initialised_) + { + ::ReleaseMutex(mutex); + ::CloseHandle(mutex); + return 0; + } + +#if defined(__MINGW32__) + // Not sure if MinGW supports structured exception handling, so for now + // we'll just call the Windows API and hope. +# if defined(UNDER_CE) + ::InitializeCriticalSection(&crit_section_); +# else + if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000)) + { + last_error = ::GetLastError(); + ::ReleaseMutex(mutex); + ::CloseHandle(mutex); + return last_error; + } +# endif +#else + __try + { +# if defined(UNDER_CE) + ::InitializeCriticalSection(&crit_section_); +# else + if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000)) + { + last_error = ::GetLastError(); + ::ReleaseMutex(mutex); + ::CloseHandle(mutex); + return last_error; + } +# endif + } + __except(GetExceptionCode() == STATUS_NO_MEMORY + ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH) + { + ::ReleaseMutex(mutex); + ::CloseHandle(mutex); + return ERROR_OUTOFMEMORY; + } +#endif + + initialised_ = true; + ::ReleaseMutex(mutex); + ::CloseHandle(mutex); + return 0; +} + +} // namespace detail +} // namespace asio +} // namespace boost + +#include <boost/asio/detail/pop_options.hpp> + +#endif // defined(BOOST_WINDOWS) + +#endif // BOOST_ASIO_DETAIL_IMPL_WIN_STATIC_MUTEX_IPP |