671 lines
23 KiB
C++
671 lines
23 KiB
C++
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#ifndef BOOST_WIN32_THREAD_PRIMITIVES_HPP
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#define BOOST_WIN32_THREAD_PRIMITIVES_HPP
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// win32_thread_primitives.hpp
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//
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// (C) Copyright 2005-7 Anthony Williams
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// (C) Copyright 2007 David Deakins
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/thread/detail/config.hpp>
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#include <boost/predef/platform.h>
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#include <boost/throw_exception.hpp>
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#include <boost/assert.hpp>
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#include <boost/thread/exceptions.hpp>
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#include <boost/detail/interlocked.hpp>
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#include <boost/detail/winapi/config.hpp>
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//#include <boost/detail/winapi/synchronization.hpp>
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#include <algorithm>
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#if BOOST_PLAT_WINDOWS_RUNTIME
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#include <thread>
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#endif
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#if defined( BOOST_USE_WINDOWS_H )
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# include <windows.h>
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namespace boost
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{
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namespace detail
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{
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namespace win32
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{
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typedef HANDLE handle;
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typedef SYSTEM_INFO system_info;
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typedef unsigned __int64 ticks_type;
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typedef FARPROC farproc_t;
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unsigned const infinite=INFINITE;
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unsigned const timeout=WAIT_TIMEOUT;
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handle const invalid_handle_value=INVALID_HANDLE_VALUE;
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unsigned const event_modify_state=EVENT_MODIFY_STATE;
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unsigned const synchronize=SYNCHRONIZE;
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unsigned const wait_abandoned=WAIT_ABANDONED;
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unsigned const create_event_initial_set = 0x00000002;
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unsigned const create_event_manual_reset = 0x00000001;
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unsigned const event_all_access = EVENT_ALL_ACCESS;
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unsigned const semaphore_all_access = SEMAPHORE_ALL_ACCESS;
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# ifdef BOOST_NO_ANSI_APIS
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# if BOOST_USE_WINAPI_VERSION < BOOST_WINAPI_VERSION_VISTA
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using ::CreateMutexW;
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using ::CreateEventW;
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using ::CreateSemaphoreW;
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# else
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using ::CreateMutexExW;
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using ::CreateEventExW;
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using ::CreateSemaphoreExW;
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# endif
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using ::OpenEventW;
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using ::GetModuleHandleW;
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# else
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using ::CreateMutexA;
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using ::CreateEventA;
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using ::OpenEventA;
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using ::CreateSemaphoreA;
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using ::GetModuleHandleA;
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# endif
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#if BOOST_PLAT_WINDOWS_RUNTIME
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using ::GetNativeSystemInfo;
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using ::GetTickCount64;
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#else
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using ::GetSystemInfo;
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using ::GetTickCount;
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#endif
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using ::CloseHandle;
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using ::ReleaseMutex;
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using ::ReleaseSemaphore;
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using ::SetEvent;
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using ::ResetEvent;
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using ::WaitForMultipleObjectsEx;
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using ::WaitForSingleObjectEx;
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using ::GetCurrentProcessId;
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using ::GetCurrentThreadId;
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using ::GetCurrentThread;
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using ::GetCurrentProcess;
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using ::DuplicateHandle;
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#if !BOOST_PLAT_WINDOWS_RUNTIME
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using ::SleepEx;
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using ::Sleep;
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using ::QueueUserAPC;
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using ::GetProcAddress;
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#endif
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}
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}
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}
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#elif defined( WIN32 ) || defined( _WIN32 ) || defined( __WIN32__ )
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# ifdef UNDER_CE
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# ifndef WINAPI
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# ifndef _WIN32_WCE_EMULATION
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# define WINAPI __cdecl // Note this doesn't match the desktop definition
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# else
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# define WINAPI __stdcall
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# endif
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# endif
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# ifdef __cplusplus
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extern "C" {
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# endif
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typedef int BOOL;
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typedef unsigned long DWORD;
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typedef void* HANDLE;
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# include <kfuncs.h>
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# ifdef __cplusplus
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}
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# endif
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# endif
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# ifdef __cplusplus
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extern "C" {
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# endif
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struct _SYSTEM_INFO;
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# ifdef __cplusplus
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}
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#endif
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namespace boost
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{
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namespace detail
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{
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namespace win32
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{
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# ifdef _WIN64
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typedef unsigned __int64 ulong_ptr;
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# else
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typedef unsigned long ulong_ptr;
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# endif
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typedef void* handle;
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typedef _SYSTEM_INFO system_info;
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typedef unsigned __int64 ticks_type;
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typedef int (__stdcall *farproc_t)();
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unsigned const infinite=~0U;
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unsigned const timeout=258U;
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handle const invalid_handle_value=(handle)(-1);
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unsigned const event_modify_state=2;
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unsigned const synchronize=0x100000u;
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unsigned const wait_abandoned=0x00000080u;
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unsigned const create_event_initial_set = 0x00000002;
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unsigned const create_event_manual_reset = 0x00000001;
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unsigned const event_all_access = 0x1F0003;
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unsigned const semaphore_all_access = 0x1F0003;
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extern "C"
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{
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struct _SECURITY_ATTRIBUTES;
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# ifdef BOOST_NO_ANSI_APIS
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# if BOOST_USE_WINAPI_VERSION < BOOST_WINAPI_VERSION_VISTA
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__declspec(dllimport) void* __stdcall CreateMutexW(_SECURITY_ATTRIBUTES*,int,wchar_t const*);
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__declspec(dllimport) void* __stdcall CreateSemaphoreW(_SECURITY_ATTRIBUTES*,long,long,wchar_t const*);
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__declspec(dllimport) void* __stdcall CreateEventW(_SECURITY_ATTRIBUTES*,int,int,wchar_t const*);
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# else
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__declspec(dllimport) void* __stdcall CreateMutexExW(_SECURITY_ATTRIBUTES*,wchar_t const*,unsigned long,unsigned long);
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__declspec(dllimport) void* __stdcall CreateEventExW(_SECURITY_ATTRIBUTES*,wchar_t const*,unsigned long,unsigned long);
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__declspec(dllimport) void* __stdcall CreateSemaphoreExW(_SECURITY_ATTRIBUTES*,long,long,wchar_t const*,unsigned long,unsigned long);
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# endif
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__declspec(dllimport) void* __stdcall OpenEventW(unsigned long,int,wchar_t const*);
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__declspec(dllimport) void* __stdcall GetModuleHandleW(wchar_t const*);
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# else
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__declspec(dllimport) void* __stdcall CreateMutexA(_SECURITY_ATTRIBUTES*,int,char const*);
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__declspec(dllimport) void* __stdcall CreateSemaphoreA(_SECURITY_ATTRIBUTES*,long,long,char const*);
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__declspec(dllimport) void* __stdcall CreateEventA(_SECURITY_ATTRIBUTES*,int,int,char const*);
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__declspec(dllimport) void* __stdcall OpenEventA(unsigned long,int,char const*);
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__declspec(dllimport) void* __stdcall GetModuleHandleA(char const*);
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# endif
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#if BOOST_PLAT_WINDOWS_RUNTIME
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__declspec(dllimport) void __stdcall GetNativeSystemInfo(_SYSTEM_INFO*);
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__declspec(dllimport) ticks_type __stdcall GetTickCount64();
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#else
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__declspec(dllimport) void __stdcall GetSystemInfo(_SYSTEM_INFO*);
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__declspec(dllimport) unsigned long __stdcall GetTickCount();
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#endif
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__declspec(dllimport) int __stdcall CloseHandle(void*);
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__declspec(dllimport) int __stdcall ReleaseMutex(void*);
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__declspec(dllimport) unsigned long __stdcall WaitForSingleObjectEx(void*,unsigned long,int);
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__declspec(dllimport) unsigned long __stdcall WaitForMultipleObjectsEx(unsigned long nCount,void* const * lpHandles,int bWaitAll,unsigned long dwMilliseconds,int bAlertable);
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__declspec(dllimport) int __stdcall ReleaseSemaphore(void*,long,long*);
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__declspec(dllimport) int __stdcall DuplicateHandle(void*,void*,void*,void**,unsigned long,int,unsigned long);
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#if !BOOST_PLAT_WINDOWS_RUNTIME
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__declspec(dllimport) unsigned long __stdcall SleepEx(unsigned long,int);
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__declspec(dllimport) void __stdcall Sleep(unsigned long);
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typedef void (__stdcall *queue_user_apc_callback_function)(ulong_ptr);
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__declspec(dllimport) unsigned long __stdcall QueueUserAPC(queue_user_apc_callback_function,void*,ulong_ptr);
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__declspec(dllimport) farproc_t __stdcall GetProcAddress(void *, const char *);
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#endif
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# ifndef UNDER_CE
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__declspec(dllimport) unsigned long __stdcall GetCurrentProcessId();
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__declspec(dllimport) unsigned long __stdcall GetCurrentThreadId();
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__declspec(dllimport) void* __stdcall GetCurrentThread();
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__declspec(dllimport) void* __stdcall GetCurrentProcess();
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__declspec(dllimport) int __stdcall SetEvent(void*);
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__declspec(dllimport) int __stdcall ResetEvent(void*);
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# else
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using ::GetCurrentProcessId;
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using ::GetCurrentThreadId;
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using ::GetCurrentThread;
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using ::GetCurrentProcess;
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using ::SetEvent;
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using ::ResetEvent;
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# endif
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}
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}
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}
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}
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#else
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# error "Win32 functions not available"
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#endif
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#include <boost/config/abi_prefix.hpp>
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namespace boost
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{
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namespace detail
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{
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namespace win32
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{
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namespace detail { typedef ticks_type (__stdcall *gettickcount64_t)(); }
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#if !BOOST_PLAT_WINDOWS_RUNTIME
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extern "C"
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{
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#ifdef _MSC_VER
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long _InterlockedCompareExchange(long volatile *, long, long);
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#pragma intrinsic(_InterlockedCompareExchange)
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#elif defined(__MINGW64_VERSION_MAJOR)
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long _InterlockedCompareExchange(long volatile *, long, long);
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#else
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// Mingw doesn't provide intrinsics
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#define _InterlockedCompareExchange InterlockedCompareExchange
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#endif
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}
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// Borrowed from https://stackoverflow.com/questions/8211820/userland-interrupt-timer-access-such-as-via-kequeryinterrupttime-or-similar
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inline ticks_type __stdcall GetTickCount64emulation()
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{
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static volatile long count = 0xFFFFFFFF;
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unsigned long previous_count, current_tick32, previous_count_zone, current_tick32_zone;
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ticks_type current_tick64;
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previous_count = (unsigned long) _InterlockedCompareExchange(&count, 0, 0);
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current_tick32 = GetTickCount();
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if(previous_count == 0xFFFFFFFF)
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{
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// count has never been written
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unsigned long initial_count;
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initial_count = current_tick32 >> 28;
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previous_count = (unsigned long) _InterlockedCompareExchange(&count, initial_count, 0xFFFFFFFF);
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current_tick64 = initial_count;
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current_tick64 <<= 28;
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current_tick64 += current_tick32 & 0x0FFFFFFF;
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return current_tick64;
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}
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previous_count_zone = previous_count & 15;
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current_tick32_zone = current_tick32 >> 28;
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if(current_tick32_zone == previous_count_zone)
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{
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// The top four bits of the 32-bit tick count haven't changed since count was last written.
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current_tick64 = previous_count;
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current_tick64 <<= 28;
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current_tick64 += current_tick32 & 0x0FFFFFFF;
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return current_tick64;
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}
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if(current_tick32_zone == previous_count_zone + 1 || (current_tick32_zone == 0 && previous_count_zone == 15))
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{
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// The top four bits of the 32-bit tick count have been incremented since count was last written.
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_InterlockedCompareExchange(&count, previous_count + 1, previous_count);
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current_tick64 = previous_count + 1;
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current_tick64 <<= 28;
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current_tick64 += current_tick32 & 0x0FFFFFFF;
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return current_tick64;
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}
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// Oops, we weren't called often enough, we're stuck
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return 0xFFFFFFFF;
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}
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#else
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#endif
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inline detail::gettickcount64_t GetTickCount64_()
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{
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static detail::gettickcount64_t gettickcount64impl;
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if(gettickcount64impl)
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return gettickcount64impl;
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// GetTickCount and GetModuleHandle are not allowed in the Windows Runtime,
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// and kernel32 isn't used in Windows Phone.
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#if BOOST_PLAT_WINDOWS_RUNTIME
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gettickcount64impl = &GetTickCount64;
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#else
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farproc_t addr=GetProcAddress(
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#if !defined(BOOST_NO_ANSI_APIS)
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GetModuleHandleA("KERNEL32.DLL"),
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#else
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GetModuleHandleW(L"KERNEL32.DLL"),
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#endif
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"GetTickCount64");
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if(addr)
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gettickcount64impl=(detail::gettickcount64_t) addr;
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else
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gettickcount64impl=&GetTickCount64emulation;
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#endif
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return gettickcount64impl;
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}
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enum event_type
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{
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auto_reset_event=false,
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manual_reset_event=true
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};
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enum initial_event_state
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{
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event_initially_reset=false,
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event_initially_set=true
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};
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inline handle create_event(
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#if !defined(BOOST_NO_ANSI_APIS)
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const char *mutex_name,
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#else
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const wchar_t *mutex_name,
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#endif
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event_type type,
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initial_event_state state)
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{
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#if !defined(BOOST_NO_ANSI_APIS)
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handle const res = win32::CreateEventA(0, type, state, mutex_name);
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#elif BOOST_USE_WINAPI_VERSION < BOOST_WINAPI_VERSION_VISTA
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handle const res = win32::CreateEventW(0, type, state, mutex_name);
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#else
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handle const res = win32::CreateEventExW(
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0,
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mutex_name,
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type ? create_event_manual_reset : 0 | state ? create_event_initial_set : 0,
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event_all_access);
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#endif
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return res;
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}
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inline handle create_anonymous_event(event_type type,initial_event_state state)
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{
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handle const res = create_event(0, type, state);
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if(!res)
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{
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|
|
boost::throw_exception(thread_resource_error());
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline handle create_anonymous_semaphore_nothrow(long initial_count,long max_count)
|
||
|
|
{
|
||
|
|
#if !defined(BOOST_NO_ANSI_APIS)
|
||
|
|
handle const res=win32::CreateSemaphoreA(0,initial_count,max_count,0);
|
||
|
|
#else
|
||
|
|
#if BOOST_USE_WINAPI_VERSION < BOOST_WINAPI_VERSION_VISTA
|
||
|
|
handle const res=win32::CreateSemaphoreEx(0,initial_count,max_count,0,0);
|
||
|
|
#else
|
||
|
|
handle const res=win32::CreateSemaphoreExW(0,initial_count,max_count,0,0,semaphore_all_access);
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline handle create_anonymous_semaphore(long initial_count,long max_count)
|
||
|
|
{
|
||
|
|
handle const res=create_anonymous_semaphore_nothrow(initial_count,max_count);
|
||
|
|
if(!res)
|
||
|
|
{
|
||
|
|
boost::throw_exception(thread_resource_error());
|
||
|
|
}
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline handle duplicate_handle(handle source)
|
||
|
|
{
|
||
|
|
handle const current_process=GetCurrentProcess();
|
||
|
|
long const same_access_flag=2;
|
||
|
|
handle new_handle=0;
|
||
|
|
bool const success=DuplicateHandle(current_process,source,current_process,&new_handle,0,false,same_access_flag)!=0;
|
||
|
|
if(!success)
|
||
|
|
{
|
||
|
|
boost::throw_exception(thread_resource_error());
|
||
|
|
}
|
||
|
|
return new_handle;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void release_semaphore(handle semaphore,long count)
|
||
|
|
{
|
||
|
|
BOOST_VERIFY(ReleaseSemaphore(semaphore,count,0)!=0);
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void get_system_info(system_info *info)
|
||
|
|
{
|
||
|
|
#if BOOST_PLAT_WINDOWS_RUNTIME
|
||
|
|
win32::GetNativeSystemInfo(info);
|
||
|
|
#else
|
||
|
|
win32::GetSystemInfo(info);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void sleep(unsigned long milliseconds)
|
||
|
|
{
|
||
|
|
if(milliseconds == 0)
|
||
|
|
{
|
||
|
|
#if BOOST_PLAT_WINDOWS_RUNTIME
|
||
|
|
std::this_thread::yield();
|
||
|
|
#else
|
||
|
|
::boost::detail::win32::Sleep(0);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
#if BOOST_PLAT_WINDOWS_RUNTIME
|
||
|
|
::boost::detail::win32::WaitForSingleObjectEx(::boost::detail::win32::GetCurrentThread(), milliseconds, 0);
|
||
|
|
#else
|
||
|
|
::boost::detail::win32::Sleep(milliseconds);
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if BOOST_PLAT_WINDOWS_RUNTIME
|
||
|
|
class BOOST_THREAD_DECL scoped_winrt_thread
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
scoped_winrt_thread() : m_completionHandle(invalid_handle_value)
|
||
|
|
{}
|
||
|
|
|
||
|
|
~scoped_winrt_thread()
|
||
|
|
{
|
||
|
|
if (m_completionHandle != ::boost::detail::win32::invalid_handle_value)
|
||
|
|
{
|
||
|
|
CloseHandle(m_completionHandle);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
typedef unsigned(__stdcall * thread_func)(void *);
|
||
|
|
bool start(thread_func address, void *parameter, unsigned int *thrdId);
|
||
|
|
|
||
|
|
handle waitable_handle() const
|
||
|
|
{
|
||
|
|
BOOST_ASSERT(m_completionHandle != ::boost::detail::win32::invalid_handle_value);
|
||
|
|
return m_completionHandle;
|
||
|
|
}
|
||
|
|
|
||
|
|
private:
|
||
|
|
handle m_completionHandle;
|
||
|
|
};
|
||
|
|
#endif
|
||
|
|
class BOOST_THREAD_DECL handle_manager
|
||
|
|
{
|
||
|
|
private:
|
||
|
|
handle handle_to_manage;
|
||
|
|
handle_manager(handle_manager&);
|
||
|
|
handle_manager& operator=(handle_manager&);
|
||
|
|
|
||
|
|
void cleanup()
|
||
|
|
{
|
||
|
|
if(handle_to_manage && handle_to_manage!=invalid_handle_value)
|
||
|
|
{
|
||
|
|
BOOST_VERIFY(CloseHandle(handle_to_manage));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
public:
|
||
|
|
explicit handle_manager(handle handle_to_manage_):
|
||
|
|
handle_to_manage(handle_to_manage_)
|
||
|
|
{}
|
||
|
|
handle_manager():
|
||
|
|
handle_to_manage(0)
|
||
|
|
{}
|
||
|
|
|
||
|
|
handle_manager& operator=(handle new_handle)
|
||
|
|
{
|
||
|
|
cleanup();
|
||
|
|
handle_to_manage=new_handle;
|
||
|
|
return *this;
|
||
|
|
}
|
||
|
|
|
||
|
|
operator handle() const
|
||
|
|
{
|
||
|
|
return handle_to_manage;
|
||
|
|
}
|
||
|
|
|
||
|
|
handle duplicate() const
|
||
|
|
{
|
||
|
|
return duplicate_handle(handle_to_manage);
|
||
|
|
}
|
||
|
|
|
||
|
|
void swap(handle_manager& other)
|
||
|
|
{
|
||
|
|
std::swap(handle_to_manage,other.handle_to_manage);
|
||
|
|
}
|
||
|
|
|
||
|
|
handle release()
|
||
|
|
{
|
||
|
|
handle const res=handle_to_manage;
|
||
|
|
handle_to_manage=0;
|
||
|
|
return res;
|
||
|
|
}
|
||
|
|
|
||
|
|
bool operator!() const
|
||
|
|
{
|
||
|
|
return !handle_to_manage;
|
||
|
|
}
|
||
|
|
|
||
|
|
~handle_manager()
|
||
|
|
{
|
||
|
|
cleanup();
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#if defined(BOOST_MSVC) && (_MSC_VER>=1400) && !defined(UNDER_CE)
|
||
|
|
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
namespace win32
|
||
|
|
{
|
||
|
|
#if _MSC_VER==1400
|
||
|
|
extern "C" unsigned char _interlockedbittestandset(long *a,long b);
|
||
|
|
extern "C" unsigned char _interlockedbittestandreset(long *a,long b);
|
||
|
|
#else
|
||
|
|
extern "C" unsigned char _interlockedbittestandset(volatile long *a,long b);
|
||
|
|
extern "C" unsigned char _interlockedbittestandreset(volatile long *a,long b);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#pragma intrinsic(_interlockedbittestandset)
|
||
|
|
#pragma intrinsic(_interlockedbittestandreset)
|
||
|
|
|
||
|
|
inline bool interlocked_bit_test_and_set(long* x,long bit)
|
||
|
|
{
|
||
|
|
return _interlockedbittestandset(x,bit)!=0;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool interlocked_bit_test_and_reset(long* x,long bit)
|
||
|
|
{
|
||
|
|
return _interlockedbittestandreset(x,bit)!=0;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#define BOOST_THREAD_BTS_DEFINED
|
||
|
|
#elif (defined(BOOST_MSVC) || defined(BOOST_INTEL_WIN)) && defined(_M_IX86)
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
namespace win32
|
||
|
|
{
|
||
|
|
inline bool interlocked_bit_test_and_set(long* x,long bit)
|
||
|
|
{
|
||
|
|
#ifndef BOOST_INTEL_CXX_VERSION
|
||
|
|
__asm {
|
||
|
|
mov eax,bit;
|
||
|
|
mov edx,x;
|
||
|
|
lock bts [edx],eax;
|
||
|
|
setc al;
|
||
|
|
};
|
||
|
|
#else
|
||
|
|
bool ret;
|
||
|
|
__asm {
|
||
|
|
mov eax,bit
|
||
|
|
mov edx,x
|
||
|
|
lock bts [edx],eax
|
||
|
|
setc al
|
||
|
|
mov ret, al
|
||
|
|
};
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool interlocked_bit_test_and_reset(long* x,long bit)
|
||
|
|
{
|
||
|
|
#ifndef BOOST_INTEL_CXX_VERSION
|
||
|
|
__asm {
|
||
|
|
mov eax,bit;
|
||
|
|
mov edx,x;
|
||
|
|
lock btr [edx],eax;
|
||
|
|
setc al;
|
||
|
|
};
|
||
|
|
#else
|
||
|
|
bool ret;
|
||
|
|
__asm {
|
||
|
|
mov eax,bit
|
||
|
|
mov edx,x
|
||
|
|
lock btr [edx],eax
|
||
|
|
setc al
|
||
|
|
mov ret, al
|
||
|
|
};
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#define BOOST_THREAD_BTS_DEFINED
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef BOOST_THREAD_BTS_DEFINED
|
||
|
|
|
||
|
|
namespace boost
|
||
|
|
{
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
namespace win32
|
||
|
|
{
|
||
|
|
inline bool interlocked_bit_test_and_set(long* x,long bit)
|
||
|
|
{
|
||
|
|
long const value=1<<bit;
|
||
|
|
long old=*x;
|
||
|
|
do
|
||
|
|
{
|
||
|
|
long const current=BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,old|value,old);
|
||
|
|
if(current==old)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
old=current;
|
||
|
|
}
|
||
|
|
while(true) ;
|
||
|
|
return (old&value)!=0;
|
||
|
|
}
|
||
|
|
|
||
|
|
inline bool interlocked_bit_test_and_reset(long* x,long bit)
|
||
|
|
{
|
||
|
|
long const value=1<<bit;
|
||
|
|
long old=*x;
|
||
|
|
do
|
||
|
|
{
|
||
|
|
long const current=BOOST_INTERLOCKED_COMPARE_EXCHANGE(x,old&~value,old);
|
||
|
|
if(current==old)
|
||
|
|
{
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
old=current;
|
||
|
|
}
|
||
|
|
while(true) ;
|
||
|
|
return (old&value)!=0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <boost/config/abi_suffix.hpp>
|
||
|
|
|
||
|
|
#endif
|