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// semaphore.hpp --------------------------------------------------------------//
// Copyright 2010 Vicente J. Botet Escriba
// Copyright 2015 Andrey Semashev
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
#ifndef BOOST_DETAIL_WINAPI_SEMAPHORE_HPP
#define BOOST_DETAIL_WINAPI_SEMAPHORE_HPP
#include <boost/detail/winapi/basic_types.hpp>
#include <boost/predef/platform.h>
#ifdef BOOST_HAS_PRAGMA_ONCE
#pragma once
#endif
#if !defined( BOOST_USE_WINDOWS_H )
extern "C" {
#if !defined( BOOST_NO_ANSI_APIS )
#if !defined( BOOST_PLAT_WINDOWS_RUNTIME_AVALIABLE )
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
CreateSemaphoreA(
::_SECURITY_ATTRIBUTES* lpSemaphoreAttributes,
boost::detail::winapi::LONG_ lInitialCount,
boost::detail::winapi::LONG_ lMaximumCount,
boost::detail::winapi::LPCSTR_ lpName);
#endif
#if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
CreateSemaphoreExA(
::_SECURITY_ATTRIBUTES* lpSemaphoreAttributes,
boost::detail::winapi::LONG_ lInitialCount,
boost::detail::winapi::LONG_ lMaximumCount,
boost::detail::winapi::LPCSTR_ lpName,
boost::detail::winapi::DWORD_ dwFlags,
boost::detail::winapi::DWORD_ dwDesiredAccess);
#endif
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
OpenSemaphoreA(
boost::detail::winapi::DWORD_ dwDesiredAccess,
boost::detail::winapi::BOOL_ bInheritHandle,
boost::detail::winapi::LPCSTR_ lpName);
#endif
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
CreateSemaphoreW(
::_SECURITY_ATTRIBUTES* lpSemaphoreAttributes,
boost::detail::winapi::LONG_ lInitialCount,
boost::detail::winapi::LONG_ lMaximumCount,
boost::detail::winapi::LPCWSTR_ lpName);
#if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
CreateSemaphoreExW(
::_SECURITY_ATTRIBUTES* lpSemaphoreAttributes,
boost::detail::winapi::LONG_ lInitialCount,
boost::detail::winapi::LONG_ lMaximumCount,
boost::detail::winapi::LPCWSTR_ lpName,
boost::detail::winapi::DWORD_ dwFlags,
boost::detail::winapi::DWORD_ dwDesiredAccess);
#endif
BOOST_SYMBOL_IMPORT boost::detail::winapi::HANDLE_ WINAPI
OpenSemaphoreW(
boost::detail::winapi::DWORD_ dwDesiredAccess,
boost::detail::winapi::BOOL_ bInheritHandle,
boost::detail::winapi::LPCWSTR_ lpName);
BOOST_SYMBOL_IMPORT boost::detail::winapi::BOOL_ WINAPI
ReleaseSemaphore(
boost::detail::winapi::HANDLE_ hSemaphore,
boost::detail::winapi::LONG_ lReleaseCount,
boost::detail::winapi::LPLONG_ lpPreviousCount);
}
#endif
namespace boost {
namespace detail {
namespace winapi {
#if !defined( BOOST_NO_ANSI_APIS )
using ::OpenSemaphoreA;
#endif
using ::OpenSemaphoreW;
using ::ReleaseSemaphore;
#if defined( BOOST_USE_WINDOWS_H )
const DWORD_ SEMAPHORE_ALL_ACCESS_ = SEMAPHORE_ALL_ACCESS;
const DWORD_ SEMAPHORE_MODIFY_STATE_ = SEMAPHORE_MODIFY_STATE;
#else // defined( BOOST_USE_WINDOWS_H )
const DWORD_ SEMAPHORE_ALL_ACCESS_ = 0x001F0003;
const DWORD_ SEMAPHORE_MODIFY_STATE_ = 0x00000002;
#endif // defined( BOOST_USE_WINDOWS_H )
// Undocumented and not present in Windows SDK. Enables NtQuerySemaphore.
// http://undocumented.ntinternals.net/index.html?page=UserMode%2FUndocumented%20Functions%2FNT%20Objects%2FEvent%2FNtQueryEvent.html
const DWORD_ SEMAPHORE_QUERY_STATE_ = 0x00000001;
const DWORD_ semaphore_all_access = SEMAPHORE_ALL_ACCESS_;
const DWORD_ semaphore_modify_state = SEMAPHORE_MODIFY_STATE_;
#if !defined( BOOST_NO_ANSI_APIS )
BOOST_FORCEINLINE HANDLE_ CreateSemaphoreA(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCSTR_ lpName)
{
#if BOOST_PLAT_WINDOWS_RUNTIME && BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
return ::CreateSemaphoreExA(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName, 0, semaphore_all_access);
#else
return ::CreateSemaphoreA(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName);
#endif
}
#if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
BOOST_FORCEINLINE HANDLE_ CreateSemaphoreExA(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCSTR_ lpName, DWORD_ dwFlags, DWORD_ dwDesiredAccess)
{
return ::CreateSemaphoreExA(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName, dwFlags, dwDesiredAccess);
}
#endif
#endif
BOOST_FORCEINLINE HANDLE_ CreateSemaphoreW(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCWSTR_ lpName)
{
#if BOOST_PLAT_WINDOWS_RUNTIME && BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
return ::CreateSemaphoreExW(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName, 0, semaphore_all_access);
#else
return ::CreateSemaphoreW(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName);
#endif
}
#if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6
BOOST_FORCEINLINE HANDLE_ CreateSemaphoreExW(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCWSTR_ lpName, DWORD_ dwFlags, DWORD_ dwDesiredAccess)
{
return ::CreateSemaphoreExW(reinterpret_cast< ::_SECURITY_ATTRIBUTES* >(lpSemaphoreAttributes), lInitialCount, lMaximumCount, lpName, dwFlags, dwDesiredAccess);
}
#endif
#if !defined( BOOST_NO_ANSI_APIS )
BOOST_FORCEINLINE HANDLE_ create_semaphore(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCSTR_ lpName)
{
return winapi::CreateSemaphoreA(lpSemaphoreAttributes, lInitialCount, lMaximumCount, lpName);
}
BOOST_FORCEINLINE HANDLE_ open_semaphore(DWORD_ dwDesiredAccess, BOOL_ bInheritHandle, LPCSTR_ lpName)
{
return ::OpenSemaphoreA(dwDesiredAccess, bInheritHandle, lpName);
}
#endif
BOOST_FORCEINLINE HANDLE_ create_semaphore(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount, LPCWSTR_ lpName)
{
return winapi::CreateSemaphoreW(lpSemaphoreAttributes, lInitialCount, lMaximumCount, lpName);
}
BOOST_FORCEINLINE HANDLE_ open_semaphore(DWORD_ dwDesiredAccess, BOOL_ bInheritHandle, LPCWSTR_ lpName)
{
return ::OpenSemaphoreW(dwDesiredAccess, bInheritHandle, lpName);
}
BOOST_FORCEINLINE HANDLE_ create_anonymous_semaphore(SECURITY_ATTRIBUTES_* lpSemaphoreAttributes, LONG_ lInitialCount, LONG_ lMaximumCount)
{
return winapi::CreateSemaphoreW(lpSemaphoreAttributes, lInitialCount, lMaximumCount, 0);
}
}
}
}
#endif // BOOST_DETAIL_WINAPI_SEMAPHORE_HPP
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