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//
// detail/impl/win_mutex.ipp
// ~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2017 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 ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
#define ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
#include "asio/detail/config.hpp"
#if defined(ASIO_WINDOWS)
#include "asio/detail/throw_error.hpp"
#include "asio/detail/win_mutex.hpp"
#include "asio/error.hpp"
#include "asio/detail/push_options.hpp"
namespace asio {
namespace detail {
win_mutex::win_mutex()
{
int error = do_init();
asio::error_code ec(error,
asio::error::get_system_category());
asio::detail::throw_error(ec, "mutex");
}
int win_mutex::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.
# if defined(UNDER_CE)
::InitializeCriticalSection(&crit_section_);
# elif defined(ASIO_WINDOWS_APP)
if (!::InitializeCriticalSectionEx(&crit_section_, 0, 0))
return ::GetLastError();
# else
if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
return ::GetLastError();
# endif
return 0;
#else
__try
{
# if defined(UNDER_CE)
::InitializeCriticalSection(&crit_section_);
# elif defined(ASIO_WINDOWS_APP)
if (!::InitializeCriticalSectionEx(&crit_section_, 0, 0))
return ::GetLastError();
# else
if (!::InitializeCriticalSectionAndSpinCount(&crit_section_, 0x80000000))
return ::GetLastError();
# endif
}
__except(GetExceptionCode() == STATUS_NO_MEMORY
? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH)
{
return ERROR_OUTOFMEMORY;
}
return 0;
#endif
}
} // namespace detail
} // namespace asio
#include "asio/detail/pop_options.hpp"
#endif // defined(ASIO_WINDOWS)
#endif // ASIO_DETAIL_IMPL_WIN_MUTEX_IPP
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