diff options
Diffstat (limited to 'include/__threading_support')
| -rw-r--r-- | include/__threading_support | 105 |
1 files changed, 96 insertions, 9 deletions
diff --git a/include/__threading_support b/include/__threading_support index 589fe2096fd4..0d1f1e681f50 100644 --- a/include/__threading_support +++ b/include/__threading_support @@ -12,6 +12,7 @@ #include <__config> #include <chrono> +#include <iosfwd> #include <errno.h> #ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER @@ -22,16 +23,11 @@ # include <__external_threading> #elif !defined(_LIBCPP_HAS_NO_THREADS) -typedef ::timespec __libcpp_timespec_t; - #if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) # include <pthread.h> # include <sched.h> #endif -_LIBCPP_PUSH_MACROS -#include <__undef_macros> - #if defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL) || \ defined(_LIBCPP_HAS_THREAD_API_WIN32) @@ -46,8 +42,16 @@ _LIBCPP_PUSH_MACROS #define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS #endif +typedef ::timespec __libcpp_timespec_t; +#endif // !defined(_LIBCPP_HAS_NO_THREADS) + +_LIBCPP_PUSH_MACROS +#include <__undef_macros> + _LIBCPP_BEGIN_NAMESPACE_STD +#if !defined(_LIBCPP_HAS_NO_THREADS) + #if defined(_LIBCPP_HAS_THREAD_API_PTHREAD) // Mutex typedef pthread_mutex_t __libcpp_mutex_t; @@ -75,7 +79,7 @@ typedef pthread_t __libcpp_thread_t; typedef pthread_key_t __libcpp_tls_key; #define _LIBCPP_TLS_DESTRUCTOR_CC -#else +#elif !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) // Mutex typedef void* __libcpp_mutex_t; #define _LIBCPP_MUTEX_INITIALIZER 0 @@ -108,8 +112,9 @@ typedef void* __libcpp_thread_t; typedef long __libcpp_tls_key; #define _LIBCPP_TLS_DESTRUCTOR_CC __stdcall -#endif +#endif // !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) +#if !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) // Mutex _LIBCPP_THREAD_ABI_VISIBILITY int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m); @@ -204,6 +209,8 @@ void *__libcpp_tls_get(__libcpp_tls_key __key); _LIBCPP_THREAD_ABI_VISIBILITY int __libcpp_tls_set(__libcpp_tls_key __key, void *__p); +#endif // !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL) + #if (!defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \ defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL)) && \ defined(_LIBCPP_HAS_THREAD_API_PTHREAD) @@ -394,10 +401,90 @@ int __libcpp_tls_set(__libcpp_tls_key __key, void *__p) #endif // !_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL || _LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL -_LIBCPP_END_NAMESPACE_STD +class _LIBCPP_TYPE_VIS thread; +class _LIBCPP_TYPE_VIS __thread_id; -_LIBCPP_POP_MACROS +namespace this_thread +{ + +_LIBCPP_INLINE_VISIBILITY __thread_id get_id() _NOEXCEPT; + +} // this_thread + +template<> struct hash<__thread_id>; + +class _LIBCPP_TEMPLATE_VIS __thread_id +{ + // FIXME: pthread_t is a pointer on Darwin but a long on Linux. + // NULL is the no-thread value on Darwin. Someone needs to check + // on other platforms. We assume 0 works everywhere for now. + __libcpp_thread_id __id_; + +public: + _LIBCPP_INLINE_VISIBILITY + __thread_id() _NOEXCEPT : __id_(0) {} + + friend _LIBCPP_INLINE_VISIBILITY + bool operator==(__thread_id __x, __thread_id __y) _NOEXCEPT + { // don't pass id==0 to underlying routines + if (__x.__id_ == 0) return __y.__id_ == 0; + if (__y.__id_ == 0) return false; + return __libcpp_thread_id_equal(__x.__id_, __y.__id_); + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator!=(__thread_id __x, __thread_id __y) _NOEXCEPT + {return !(__x == __y);} + friend _LIBCPP_INLINE_VISIBILITY + bool operator< (__thread_id __x, __thread_id __y) _NOEXCEPT + { // id==0 is always less than any other thread_id + if (__x.__id_ == 0) return __y.__id_ != 0; + if (__y.__id_ == 0) return false; + return __libcpp_thread_id_less(__x.__id_, __y.__id_); + } + friend _LIBCPP_INLINE_VISIBILITY + bool operator<=(__thread_id __x, __thread_id __y) _NOEXCEPT + {return !(__y < __x);} + friend _LIBCPP_INLINE_VISIBILITY + bool operator> (__thread_id __x, __thread_id __y) _NOEXCEPT + {return __y < __x ;} + friend _LIBCPP_INLINE_VISIBILITY + bool operator>=(__thread_id __x, __thread_id __y) _NOEXCEPT + {return !(__x < __y);} + + _LIBCPP_INLINE_VISIBILITY + void __reset() { __id_ = 0; } + + template<class _CharT, class _Traits> + friend + _LIBCPP_INLINE_VISIBILITY + basic_ostream<_CharT, _Traits>& + operator<<(basic_ostream<_CharT, _Traits>& __os, __thread_id __id); + +private: + _LIBCPP_INLINE_VISIBILITY + __thread_id(__libcpp_thread_id __id) : __id_(__id) {} + + friend __thread_id this_thread::get_id() _NOEXCEPT; + friend class _LIBCPP_TYPE_VIS thread; + friend struct _LIBCPP_TEMPLATE_VIS hash<__thread_id>; +}; + +namespace this_thread +{ + +inline _LIBCPP_INLINE_VISIBILITY +__thread_id +get_id() _NOEXCEPT +{ + return __libcpp_thread_get_current_id(); +} + +} // this_thread #endif // !_LIBCPP_HAS_NO_THREADS +_LIBCPP_END_NAMESPACE_STD + +_LIBCPP_POP_MACROS + #endif // _LIBCPP_THREADING_SUPPORT |