Index: libcxx/include/__threading_support =================================================================== --- libcxx/include/__threading_support +++ libcxx/include/__threading_support @@ -26,23 +26,11 @@ #if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) # include # include -#elif defined(_LIBCPP_HAS_THREAD_API_WIN32) -#include -#include -#include #endif _LIBCPP_PUSH_MACROS #include <__undef_macros> - -#if defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ - defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL) -#define _LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_FUNC_VIS -#else -#define _LIBCPP_THREAD_ABI_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY -#endif - #if defined(__FreeBSD__) && defined(__clang__) && __has_attribute(no_thread_safety_analysis) #define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS __attribute__((no_thread_safety_analysis)) #else @@ -51,7 +39,15 @@ _LIBCPP_BEGIN_NAMESPACE_STD -#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) +#if defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ + defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL) + +#define _LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_FUNC_VIS + +#elif defined(_LIBCPP_HAS_THREAD_API_PTHREAD) + +#define _LIBCPP_THREAD_ABI_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY + // Mutex typedef pthread_mutex_t __libcpp_mutex_t; #define _LIBCPP_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER @@ -79,32 +75,41 @@ #define _LIBCPP_TLS_DESTRUCTOR_CC #else + +#define _LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_FUNC_VIS + // Mutex -typedef SRWLOCK __libcpp_mutex_t; -#define _LIBCPP_MUTEX_INITIALIZER SRWLOCK_INIT +typedef void* __libcpp_mutex_t; +#define _LIBCPP_MUTEX_INITIALIZER 0 -typedef CRITICAL_SECTION __libcpp_recursive_mutex_t; +#if defined(_M_IX86) || defined(_M_ARM) +typedef void* __libcpp_recursive_mutex_t[6]; +#elif defined(_M_AMD64) +typedef void* __libcpp_recursive_mutex_t[5]; +#else +# error Unsupported architecture +#endif // Condition Variable -typedef CONDITION_VARIABLE __libcpp_condvar_t; -#define _LIBCPP_CONDVAR_INITIALIZER CONDITION_VARIABLE_INIT +typedef void* __libcpp_condvar_t; +#define _LIBCPP_CONDVAR_INITIALIZER 0 // Execute Once -typedef INIT_ONCE __libcpp_exec_once_flag; -#define _LIBCPP_EXEC_ONCE_INITIALIZER INIT_ONCE_STATIC_INIT +typedef void* __libcpp_exec_once_flag; +#define _LIBCPP_EXEC_ONCE_INITIALIZER 0 // Thread ID -typedef DWORD __libcpp_thread_id; +typedef long __libcpp_thread_id; // Thread #define _LIBCPP_NULL_THREAD 0U -typedef HANDLE __libcpp_thread_t; +typedef void* __libcpp_thread_t; // Thread Local Storage -typedef DWORD __libcpp_tls_key; +typedef long __libcpp_tls_key; -#define _LIBCPP_TLS_DESTRUCTOR_CC WINAPI +#define _LIBCPP_TLS_DESTRUCTOR_CC __stdcall #endif // Mutex @@ -201,10 +206,9 @@ _LIBCPP_THREAD_ABI_VISIBILITY int __libcpp_tls_set(__libcpp_tls_key __key, void *__p); -#if !defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ - defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL) - -#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) +#if (!defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ + defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL)) && \ + defined(_LIBCPP_HAS_THREAD_API_PTHREAD) int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m) { @@ -390,244 +394,6 @@ return pthread_setspecific(__key, __p); } -#elif defined(_LIBCPP_HAS_THREAD_API_WIN32) - -// Mutex -int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m) -{ - InitializeCriticalSection(__m); - return 0; -} - -int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m) -{ - EnterCriticalSection(__m); - return 0; -} - -bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m) -{ - return TryEnterCriticalSection(__m) != 0; -} - -int __libcpp_recursive_mutex_unlock(__libcpp_recursive_mutex_t *__m) -{ - LeaveCriticalSection(__m); - return 0; -} - -int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m) -{ - DeleteCriticalSection(__m); - return 0; -} - -int __libcpp_mutex_lock(__libcpp_mutex_t *__m) -{ - AcquireSRWLockExclusive(__m); - return 0; -} - -bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m) -{ - return TryAcquireSRWLockExclusive(__m) != 0; -} - -int __libcpp_mutex_unlock(__libcpp_mutex_t *__m) -{ - ReleaseSRWLockExclusive(__m); - return 0; -} - -int __libcpp_mutex_destroy(__libcpp_mutex_t *__m) -{ - static_cast(__m); - return 0; -} - -// Condition Variable -int __libcpp_condvar_signal(__libcpp_condvar_t *__cv) -{ - WakeConditionVariable(__cv); - return 0; -} - -int __libcpp_condvar_broadcast(__libcpp_condvar_t *__cv) -{ - WakeAllConditionVariable(__cv); - return 0; -} - -int __libcpp_condvar_wait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m) -{ - SleepConditionVariableSRW(__cv, __m, INFINITE, 0); - return 0; -} - -int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m, - timespec *__ts) -{ - using namespace _VSTD::chrono; - - auto duration = seconds(__ts->tv_sec) + nanoseconds(__ts->tv_nsec); - auto abstime = - system_clock::time_point(duration_cast(duration)); - auto timeout_ms = duration_cast(abstime - system_clock::now()); - - if (!SleepConditionVariableSRW(__cv, __m, - timeout_ms.count() > 0 ? timeout_ms.count() - : 0, - 0)) - { - auto __ec = GetLastError(); - return __ec == ERROR_TIMEOUT ? ETIMEDOUT : __ec; - } - return 0; -} - -int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv) -{ - static_cast(__cv); - return 0; -} - -// Execute Once -static inline _LIBCPP_ALWAYS_INLINE BOOL CALLBACK -__libcpp_init_once_execute_once_thunk(PINIT_ONCE __init_once, PVOID __parameter, - PVOID *__context) -{ - static_cast(__init_once); - static_cast(__context); - - void (*init_routine)(void) = reinterpret_cast(__parameter); - init_routine(); - return TRUE; -} - -int __libcpp_execute_once(__libcpp_exec_once_flag *__flag, - void (*__init_routine)(void)) -{ - if (!InitOnceExecuteOnce(__flag, __libcpp_init_once_execute_once_thunk, - reinterpret_cast(__init_routine), NULL)) - return GetLastError(); - return 0; -} - -// Thread ID -bool __libcpp_thread_id_equal(__libcpp_thread_id __lhs, - __libcpp_thread_id __rhs) -{ - return __lhs == __rhs; -} - -bool __libcpp_thread_id_less(__libcpp_thread_id __lhs, __libcpp_thread_id __rhs) -{ - return __lhs < __rhs; -} - -// Thread -struct __libcpp_beginthreadex_thunk_data -{ - void *(*__func)(void *); - void *__arg; -}; - -static inline _LIBCPP_ALWAYS_INLINE unsigned WINAPI -__libcpp_beginthreadex_thunk(void *__raw_data) -{ - auto *__data = - static_cast<__libcpp_beginthreadex_thunk_data *>(__raw_data); - auto *__func = __data->__func; - void *__arg = __data->__arg; - delete __data; - return static_cast(reinterpret_cast(__func(__arg))); -} - -bool __libcpp_thread_isnull(const __libcpp_thread_t *__t) { - return *__t == 0; -} - -int __libcpp_thread_create(__libcpp_thread_t *__t, void *(*__func)(void *), - void *__arg) -{ - auto *__data = new __libcpp_beginthreadex_thunk_data; - __data->__func = __func; - __data->__arg = __arg; - - *__t = reinterpret_cast(_beginthreadex(nullptr, 0, - __libcpp_beginthreadex_thunk, - __data, 0, nullptr)); - - if (*__t) - return 0; - return GetLastError(); -} - -__libcpp_thread_id __libcpp_thread_get_current_id() -{ - return GetCurrentThreadId(); -} - -__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t) -{ - return GetThreadId(*__t); -} - -int __libcpp_thread_join(__libcpp_thread_t *__t) -{ - if (WaitForSingleObjectEx(*__t, INFINITE, FALSE) == WAIT_FAILED) - return GetLastError(); - if (!CloseHandle(*__t)) - return GetLastError(); - return 0; -} - -int __libcpp_thread_detach(__libcpp_thread_t *__t) -{ - if (!CloseHandle(*__t)) - return GetLastError(); - return 0; -} - -void __libcpp_thread_yield() -{ - SwitchToThread(); -} - -void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns) -{ - using namespace chrono; - // round-up to the nearest milisecond - milliseconds __ms = - duration_cast(__ns + chrono::nanoseconds(999999)); - // FIXME(compnerd) this should be an alertable sleep (WFSO or SleepEx) - Sleep(__ms.count()); -} - -// Thread Local Storage -int __libcpp_tls_create(__libcpp_tls_key* __key, - void(_LIBCPP_TLS_DESTRUCTOR_CC* __at_exit)(void*)) -{ - *__key = FlsAlloc(__at_exit); - if (*__key == FLS_OUT_OF_INDEXES) - return GetLastError(); - return 0; -} - -void *__libcpp_tls_get(__libcpp_tls_key __key) -{ - return FlsGetValue(__key); -} - -int __libcpp_tls_set(__libcpp_tls_key __key, void *__p) -{ - if (!FlsSetValue(__key, __p)) - return GetLastError(); - return 0; -} - -#endif // _LIBCPP_HAS_THREAD_API_PTHREAD - #endif // !_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL || _LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL _LIBCPP_END_NAMESPACE_STD Index: libcxx/src/support/win32/thread_win32.cpp =================================================================== --- /dev/null +++ libcxx/src/support/win32/thread_win32.cpp @@ -0,0 +1,275 @@ +// -*- C++ -*- +//===-------------------- support/win32/thread_win32.cpp ------------------===// +// +// The LLVM Compiler Infrastructure +// +// This file is dual licensed under the MIT and the University of Illinois Open +// Source Licenses. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include <__threading_support> +#include +#include +#include + +_LIBCPP_BEGIN_NAMESPACE_STD + +static_assert(sizeof(__libcpp_mutex_t) == sizeof(SRWLOCK), ""); +static_assert(alignof(__libcpp_mutex_t) == alignof(SRWLOCK), ""); + +static_assert(sizeof(__libcpp_recursive_mutex_t) == sizeof(CRITICAL_SECTION), + ""); +static_assert(alignof(__libcpp_recursive_mutex_t) == alignof(CRITICAL_SECTION), + ""); + +static_assert(sizeof(__libcpp_condvar_t) == sizeof(CONDITION_VARIABLE), ""); +static_assert(alignof(__libcpp_condvar_t) == alignof(CONDITION_VARIABLE), ""); + +static_assert(sizeof(__libcpp_exec_once_flag) == sizeof(INIT_ONCE), ""); +static_assert(alignof(__libcpp_exec_once_flag) == alignof(INIT_ONCE), ""); + +static_assert(sizeof(__libcpp_thread_id) == sizeof(DWORD), ""); +static_assert(alignof(__libcpp_thread_id) == alignof(DWORD), ""); + +static_assert(sizeof(__libcpp_thread_t) == sizeof(HANDLE), ""); +static_assert(alignof(__libcpp_thread_t) == alignof(HANDLE), ""); + +static_assert(sizeof(__libcpp_tls_key) == sizeof(DWORD), ""); +static_assert(alignof(__libcpp_tls_key) == alignof(DWORD), ""); + +// Mutex +int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m) +{ + InitializeCriticalSection((LPCRITICAL_SECTION)__m); + return 0; +} + +int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m) +{ + EnterCriticalSection((LPCRITICAL_SECTION)__m); + return 0; +} + +bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m) +{ + return TryEnterCriticalSection((LPCRITICAL_SECTION)__m) != 0; +} + +int __libcpp_recursive_mutex_unlock(__libcpp_recursive_mutex_t *__m) +{ + LeaveCriticalSection((LPCRITICAL_SECTION)__m); + return 0; +} + +int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m) +{ + DeleteCriticalSection((LPCRITICAL_SECTION)__m); + return 0; +} + +int __libcpp_mutex_lock(__libcpp_mutex_t *__m) +{ + AcquireSRWLockExclusive((PSRWLOCK)__m); + return 0; +} + +bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m) +{ + return TryAcquireSRWLockExclusive((PSRWLOCK)__m) != 0; +} + +int __libcpp_mutex_unlock(__libcpp_mutex_t *__m) +{ + ReleaseSRWLockExclusive((PSRWLOCK)__m); + return 0; +} + +int __libcpp_mutex_destroy(__libcpp_mutex_t *__m) +{ + static_cast(__m); + return 0; +} + +// Condition Variable +int __libcpp_condvar_signal(__libcpp_condvar_t *__cv) +{ + WakeConditionVariable((PCONDITION_VARIABLE)__cv); + return 0; +} + +int __libcpp_condvar_broadcast(__libcpp_condvar_t *__cv) +{ + WakeAllConditionVariable((PCONDITION_VARIABLE)__cv); + return 0; +} + +int __libcpp_condvar_wait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m) +{ + SleepConditionVariableSRW((PCONDITION_VARIABLE)__cv, (PSRWLOCK)__m, INFINITE, 0); + return 0; +} + +int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m, + timespec *__ts) +{ + using namespace _VSTD::chrono; + + auto duration = seconds(__ts->tv_sec) + nanoseconds(__ts->tv_nsec); + auto abstime = + system_clock::time_point(duration_cast(duration)); + auto timeout_ms = duration_cast(abstime - system_clock::now()); + + if (!SleepConditionVariableSRW((PCONDITION_VARIABLE)__cv, (PSRWLOCK)__m, + timeout_ms.count() > 0 ? timeout_ms.count() + : 0, + 0)) + { + auto __ec = GetLastError(); + return __ec == ERROR_TIMEOUT ? ETIMEDOUT : __ec; + } + return 0; +} + +int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv) +{ + static_cast(__cv); + return 0; +} + +// Execute Once +static inline _LIBCPP_ALWAYS_INLINE BOOL CALLBACK +__libcpp_init_once_execute_once_thunk(PINIT_ONCE __init_once, PVOID __parameter, + PVOID *__context) +{ + static_cast(__init_once); + static_cast(__context); + + void (*init_routine)(void) = reinterpret_cast(__parameter); + init_routine(); + return TRUE; +} + +int __libcpp_execute_once(__libcpp_exec_once_flag *__flag, + void (*__init_routine)(void)) +{ + if (!InitOnceExecuteOnce((PINIT_ONCE)__flag, __libcpp_init_once_execute_once_thunk, + reinterpret_cast(__init_routine), NULL)) + return GetLastError(); + return 0; +} + +// Thread ID +bool __libcpp_thread_id_equal(__libcpp_thread_id __lhs, + __libcpp_thread_id __rhs) +{ + return __lhs == __rhs; +} + +bool __libcpp_thread_id_less(__libcpp_thread_id __lhs, __libcpp_thread_id __rhs) +{ + return __lhs < __rhs; +} + +// Thread +struct __libcpp_beginthreadex_thunk_data +{ + void *(*__func)(void *); + void *__arg; +}; + +static inline _LIBCPP_ALWAYS_INLINE unsigned WINAPI +__libcpp_beginthreadex_thunk(void *__raw_data) +{ + auto *__data = + static_cast<__libcpp_beginthreadex_thunk_data *>(__raw_data); + auto *__func = __data->__func; + void *__arg = __data->__arg; + delete __data; + return static_cast(reinterpret_cast(__func(__arg))); +} + +bool __libcpp_thread_isnull(const __libcpp_thread_t *__t) { + return *__t == 0; +} + +int __libcpp_thread_create(__libcpp_thread_t *__t, void *(*__func)(void *), + void *__arg) +{ + auto *__data = new __libcpp_beginthreadex_thunk_data; + __data->__func = __func; + __data->__arg = __arg; + + *__t = reinterpret_cast(_beginthreadex(nullptr, 0, + __libcpp_beginthreadex_thunk, + __data, 0, nullptr)); + + if (*__t) + return 0; + return GetLastError(); +} + +__libcpp_thread_id __libcpp_thread_get_current_id() +{ + return GetCurrentThreadId(); +} + +__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t) +{ + return GetThreadId(*__t); +} + +int __libcpp_thread_join(__libcpp_thread_t *__t) +{ + if (WaitForSingleObjectEx(*__t, INFINITE, FALSE) == WAIT_FAILED) + return GetLastError(); + if (!CloseHandle(*__t)) + return GetLastError(); + return 0; +} + +int __libcpp_thread_detach(__libcpp_thread_t *__t) +{ + if (!CloseHandle(*__t)) + return GetLastError(); + return 0; +} + +void __libcpp_thread_yield() +{ + SwitchToThread(); +} + +void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns) +{ + using namespace chrono; + // round-up to the nearest milisecond + milliseconds __ms = + duration_cast(__ns + chrono::nanoseconds(999999)); + // FIXME(compnerd) this should be an alertable sleep (WFSO or SleepEx) + Sleep(__ms.count()); +} + +// Thread Local Storage +int __libcpp_tls_create(__libcpp_tls_key* __key, + void(_LIBCPP_TLS_DESTRUCTOR_CC* __at_exit)(void*)) +{ + *__key = FlsAlloc(__at_exit); + if (*__key == FLS_OUT_OF_INDEXES) + return GetLastError(); + return 0; +} + +void *__libcpp_tls_get(__libcpp_tls_key __key) +{ + return FlsGetValue(__key); +} + +int __libcpp_tls_set(__libcpp_tls_key __key, void *__p) +{ + if (!FlsSetValue(__key, __p)) + return GetLastError(); + return 0; +} + +_LIBCPP_END_NAMESPACE_STD