forked from OSchip/llvm-project
692 lines
18 KiB
C++
692 lines
18 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP_THREADING_SUPPORT
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#define _LIBCPP_THREADING_SUPPORT
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#include <__config>
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#include <chrono>
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#include <iosfwd>
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#include <errno.h>
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#ifndef _LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER
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#pragma GCC system_header
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#endif
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#if defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
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# include <__external_threading>
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#elif !defined(_LIBCPP_HAS_NO_THREADS)
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#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
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# include <pthread.h>
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# include <sched.h>
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#elif defined(_LIBCPP_HAS_THREAD_API_C11)
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# include <threads.h>
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#endif
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#if defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \
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defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL) || \
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defined(_LIBCPP_HAS_THREAD_API_WIN32)
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#define _LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_FUNC_VIS
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#else
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#define _LIBCPP_THREAD_ABI_VISIBILITY inline _LIBCPP_INLINE_VISIBILITY
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#endif
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#if defined(__FreeBSD__) && defined(__clang__) && __has_attribute(no_thread_safety_analysis)
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#define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS __attribute__((no_thread_safety_analysis))
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#else
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#define _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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#endif
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typedef ::timespec __libcpp_timespec_t;
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#endif // !defined(_LIBCPP_HAS_NO_THREADS)
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if !defined(_LIBCPP_HAS_NO_THREADS)
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#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
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// Mutex
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typedef pthread_mutex_t __libcpp_mutex_t;
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#define _LIBCPP_MUTEX_INITIALIZER PTHREAD_MUTEX_INITIALIZER
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typedef pthread_mutex_t __libcpp_recursive_mutex_t;
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// Condition Variable
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typedef pthread_cond_t __libcpp_condvar_t;
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#define _LIBCPP_CONDVAR_INITIALIZER PTHREAD_COND_INITIALIZER
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// Execute once
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typedef pthread_once_t __libcpp_exec_once_flag;
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#define _LIBCPP_EXEC_ONCE_INITIALIZER PTHREAD_ONCE_INIT
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// Thread id
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typedef pthread_t __libcpp_thread_id;
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// Thread
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#define _LIBCPP_NULL_THREAD 0U
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typedef pthread_t __libcpp_thread_t;
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// Thread Local Storage
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typedef pthread_key_t __libcpp_tls_key;
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#define _LIBCPP_TLS_DESTRUCTOR_CC
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#elif defined(_LIBCPP_HAS_THREAD_API_C11)
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// Mutex
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typedef mtx_t __libcpp_mutex_t;
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// mtx_t is a struct so using {} for initialization is valid.
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#define _LIBCPP_MUTEX_INITIALIZER {}
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typedef mtx_t __libcpp_recursive_mutex_t;
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// Condition Variable
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typedef cnd_t __libcpp_condvar_t;
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// cnd_t is a struct so using {} for initialization is valid.
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#define _LIBCPP_CONDVAR_INITIALIZER {}
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// Execute once
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typedef once_flag __libcpp_exec_once_flag;
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#define _LIBCPP_EXEC_ONCE_INITIALIZER ONCE_FLAG_INIT
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// Thread id
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typedef thrd_t __libcpp_thread_id;
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// Thread
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#define _LIBCPP_NULL_THREAD 0U
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typedef thrd_t __libcpp_thread_t;
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// Thread Local Storage
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typedef tss_t __libcpp_tls_key;
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#define _LIBCPP_TLS_DESTRUCTOR_CC
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#elif !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
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// Mutex
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typedef void* __libcpp_mutex_t;
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#define _LIBCPP_MUTEX_INITIALIZER 0
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#if defined(_M_IX86) || defined(__i386__) || defined(_M_ARM) || defined(__arm__)
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typedef void* __libcpp_recursive_mutex_t[6];
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#elif defined(_M_AMD64) || defined(__x86_64__) || defined(_M_ARM64) || defined(__aarch64__)
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typedef void* __libcpp_recursive_mutex_t[5];
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#else
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# error Unsupported architecture
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#endif
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// Condition Variable
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typedef void* __libcpp_condvar_t;
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#define _LIBCPP_CONDVAR_INITIALIZER 0
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// Execute Once
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typedef void* __libcpp_exec_once_flag;
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#define _LIBCPP_EXEC_ONCE_INITIALIZER 0
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// Thread ID
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typedef long __libcpp_thread_id;
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// Thread
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#define _LIBCPP_NULL_THREAD 0U
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typedef void* __libcpp_thread_t;
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// Thread Local Storage
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typedef long __libcpp_tls_key;
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#define _LIBCPP_TLS_DESTRUCTOR_CC __stdcall
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#endif // !defined(_LIBCPP_HAS_THREAD_API_PTHREAD) && !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
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#if !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
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// Mutex
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_recursive_mutex_unlock(__libcpp_recursive_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_mutex_lock(__libcpp_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_mutex_unlock(__libcpp_mutex_t *__m);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_mutex_destroy(__libcpp_mutex_t *__m);
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// Condition variable
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_condvar_signal(__libcpp_condvar_t* __cv);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_condvar_broadcast(__libcpp_condvar_t* __cv);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_condvar_wait(__libcpp_condvar_t* __cv, __libcpp_mutex_t* __m);
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_LIBCPP_THREAD_ABI_VISIBILITY _LIBCPP_NO_THREAD_SAFETY_ANALYSIS
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int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m,
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__libcpp_timespec_t *__ts);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_condvar_destroy(__libcpp_condvar_t* __cv);
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// Execute once
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_execute_once(__libcpp_exec_once_flag *flag,
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void (*init_routine)());
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// Thread id
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_LIBCPP_THREAD_ABI_VISIBILITY
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bool __libcpp_thread_id_equal(__libcpp_thread_id t1, __libcpp_thread_id t2);
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_LIBCPP_THREAD_ABI_VISIBILITY
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bool __libcpp_thread_id_less(__libcpp_thread_id t1, __libcpp_thread_id t2);
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// Thread
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_LIBCPP_THREAD_ABI_VISIBILITY
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bool __libcpp_thread_isnull(const __libcpp_thread_t *__t);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_thread_create(__libcpp_thread_t *__t, void *(*__func)(void *),
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void *__arg);
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_LIBCPP_THREAD_ABI_VISIBILITY
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__libcpp_thread_id __libcpp_thread_get_current_id();
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_LIBCPP_THREAD_ABI_VISIBILITY
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__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_thread_join(__libcpp_thread_t *__t);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_thread_detach(__libcpp_thread_t *__t);
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_LIBCPP_THREAD_ABI_VISIBILITY
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void __libcpp_thread_yield();
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_LIBCPP_THREAD_ABI_VISIBILITY
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void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns);
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// Thread local storage
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_tls_create(__libcpp_tls_key* __key,
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void(_LIBCPP_TLS_DESTRUCTOR_CC* __at_exit)(void*));
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_LIBCPP_THREAD_ABI_VISIBILITY
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void *__libcpp_tls_get(__libcpp_tls_key __key);
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_LIBCPP_THREAD_ABI_VISIBILITY
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int __libcpp_tls_set(__libcpp_tls_key __key, void *__p);
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#endif // !defined(_LIBCPP_HAS_THREAD_API_EXTERNAL)
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#if (!defined(_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL) || \
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defined(_LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL))
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namespace __thread_detail {
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inline __libcpp_timespec_t __convert_to_timespec(const chrono::nanoseconds& __ns)
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{
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using namespace chrono;
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seconds __s = duration_cast<seconds>(__ns);
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__libcpp_timespec_t __ts;
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typedef decltype(__ts.tv_sec) __ts_sec;
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const __ts_sec __ts_sec_max = numeric_limits<__ts_sec>::max();
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if (__s.count() < __ts_sec_max)
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{
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__ts.tv_sec = static_cast<__ts_sec>(__s.count());
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__ts.tv_nsec = static_cast<decltype(__ts.tv_nsec)>((__ns - __s).count());
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}
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else
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{
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__ts.tv_sec = __ts_sec_max;
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__ts.tv_nsec = 999999999; // (10^9 - 1)
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}
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return __ts;
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}
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}
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#if defined(_LIBCPP_HAS_THREAD_API_PTHREAD)
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int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m)
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{
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pthread_mutexattr_t attr;
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int __ec = pthread_mutexattr_init(&attr);
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if (__ec)
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return __ec;
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__ec = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
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if (__ec) {
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pthread_mutexattr_destroy(&attr);
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return __ec;
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}
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__ec = pthread_mutex_init(__m, &attr);
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if (__ec) {
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pthread_mutexattr_destroy(&attr);
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return __ec;
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}
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__ec = pthread_mutexattr_destroy(&attr);
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if (__ec) {
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pthread_mutex_destroy(__m);
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return __ec;
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}
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return 0;
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}
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int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m)
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{
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return pthread_mutex_lock(__m);
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}
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bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m)
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{
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return pthread_mutex_trylock(__m) == 0;
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}
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int __libcpp_recursive_mutex_unlock(__libcpp_mutex_t *__m)
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{
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return pthread_mutex_unlock(__m);
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}
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int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m)
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{
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return pthread_mutex_destroy(__m);
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}
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int __libcpp_mutex_lock(__libcpp_mutex_t *__m)
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{
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return pthread_mutex_lock(__m);
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}
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bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m)
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{
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return pthread_mutex_trylock(__m) == 0;
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}
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int __libcpp_mutex_unlock(__libcpp_mutex_t *__m)
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{
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return pthread_mutex_unlock(__m);
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}
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int __libcpp_mutex_destroy(__libcpp_mutex_t *__m)
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{
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return pthread_mutex_destroy(__m);
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}
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// Condition Variable
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int __libcpp_condvar_signal(__libcpp_condvar_t *__cv)
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{
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return pthread_cond_signal(__cv);
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}
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int __libcpp_condvar_broadcast(__libcpp_condvar_t *__cv)
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{
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return pthread_cond_broadcast(__cv);
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}
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int __libcpp_condvar_wait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m)
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{
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return pthread_cond_wait(__cv, __m);
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}
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int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m,
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__libcpp_timespec_t *__ts)
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{
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return pthread_cond_timedwait(__cv, __m, __ts);
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}
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int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv)
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{
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return pthread_cond_destroy(__cv);
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}
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// Execute once
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int __libcpp_execute_once(__libcpp_exec_once_flag *flag,
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void (*init_routine)()) {
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return pthread_once(flag, init_routine);
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}
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// Thread id
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// Returns non-zero if the thread ids are equal, otherwise 0
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bool __libcpp_thread_id_equal(__libcpp_thread_id t1, __libcpp_thread_id t2)
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{
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return pthread_equal(t1, t2) != 0;
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}
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// Returns non-zero if t1 < t2, otherwise 0
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bool __libcpp_thread_id_less(__libcpp_thread_id t1, __libcpp_thread_id t2)
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{
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return t1 < t2;
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}
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// Thread
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bool __libcpp_thread_isnull(const __libcpp_thread_t *__t) {
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return *__t == 0;
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}
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int __libcpp_thread_create(__libcpp_thread_t *__t, void *(*__func)(void *),
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void *__arg)
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{
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return pthread_create(__t, 0, __func, __arg);
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}
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__libcpp_thread_id __libcpp_thread_get_current_id()
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{
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return pthread_self();
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}
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__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t)
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{
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return *__t;
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}
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int __libcpp_thread_join(__libcpp_thread_t *__t)
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{
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return pthread_join(*__t, 0);
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}
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int __libcpp_thread_detach(__libcpp_thread_t *__t)
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{
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return pthread_detach(*__t);
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}
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void __libcpp_thread_yield()
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{
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sched_yield();
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}
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void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns)
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{
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__libcpp_timespec_t __ts = __thread_detail::__convert_to_timespec(__ns);
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while (nanosleep(&__ts, &__ts) == -1 && errno == EINTR);
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}
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// Thread local storage
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int __libcpp_tls_create(__libcpp_tls_key *__key, void (*__at_exit)(void *))
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{
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return pthread_key_create(__key, __at_exit);
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}
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void *__libcpp_tls_get(__libcpp_tls_key __key)
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{
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return pthread_getspecific(__key);
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}
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int __libcpp_tls_set(__libcpp_tls_key __key, void *__p)
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{
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return pthread_setspecific(__key, __p);
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}
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#elif defined(_LIBCPP_HAS_THREAD_API_C11)
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int __libcpp_recursive_mutex_init(__libcpp_recursive_mutex_t *__m)
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{
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return mtx_init(__m, mtx_recursive) == thrd_success ? 0 : EINVAL;
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}
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int __libcpp_recursive_mutex_lock(__libcpp_recursive_mutex_t *__m)
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{
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return mtx_lock(__m) == thrd_success ? 0 : EINVAL;
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}
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bool __libcpp_recursive_mutex_trylock(__libcpp_recursive_mutex_t *__m)
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{
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return mtx_trylock(__m) == thrd_success;
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}
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int __libcpp_recursive_mutex_unlock(__libcpp_mutex_t *__m)
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{
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return mtx_unlock(__m) == thrd_success ? 0 : EINVAL;
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}
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int __libcpp_recursive_mutex_destroy(__libcpp_recursive_mutex_t *__m)
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{
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mtx_destroy(__m);
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return 0;
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}
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int __libcpp_mutex_lock(__libcpp_mutex_t *__m)
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{
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return mtx_lock(__m) == thrd_success ? 0 : EINVAL;
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}
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bool __libcpp_mutex_trylock(__libcpp_mutex_t *__m)
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{
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return mtx_trylock(__m) == thrd_success;
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}
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int __libcpp_mutex_unlock(__libcpp_mutex_t *__m)
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{
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return mtx_unlock(__m) == thrd_success ? 0 : EINVAL;
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}
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int __libcpp_mutex_destroy(__libcpp_mutex_t *__m)
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{
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mtx_destroy(__m);
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return 0;
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}
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|
|
// Condition Variable
|
|
int __libcpp_condvar_signal(__libcpp_condvar_t *__cv)
|
|
{
|
|
return cnd_signal(__cv) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
int __libcpp_condvar_broadcast(__libcpp_condvar_t *__cv)
|
|
{
|
|
return cnd_broadcast(__cv) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
int __libcpp_condvar_wait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m)
|
|
{
|
|
return cnd_wait(__cv, __m) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
int __libcpp_condvar_timedwait(__libcpp_condvar_t *__cv, __libcpp_mutex_t *__m,
|
|
timespec *__ts)
|
|
{
|
|
int __ec = cnd_timedwait(__cv, __m, __ts);
|
|
return __ec == thrd_timedout ? ETIMEDOUT : __ec;
|
|
}
|
|
|
|
int __libcpp_condvar_destroy(__libcpp_condvar_t *__cv)
|
|
{
|
|
cnd_destroy(__cv);
|
|
return 0;
|
|
}
|
|
|
|
// Execute once
|
|
int __libcpp_execute_once(__libcpp_exec_once_flag *flag,
|
|
void (*init_routine)(void)) {
|
|
::call_once(flag, init_routine);
|
|
return 0;
|
|
}
|
|
|
|
// Thread id
|
|
// Returns non-zero if the thread ids are equal, otherwise 0
|
|
bool __libcpp_thread_id_equal(__libcpp_thread_id t1, __libcpp_thread_id t2)
|
|
{
|
|
return thrd_equal(t1, t2) != 0;
|
|
}
|
|
|
|
// Returns non-zero if t1 < t2, otherwise 0
|
|
bool __libcpp_thread_id_less(__libcpp_thread_id t1, __libcpp_thread_id t2)
|
|
{
|
|
return t1 < t2;
|
|
}
|
|
|
|
// Thread
|
|
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)
|
|
{
|
|
int __ec = thrd_create(__t, reinterpret_cast<thrd_start_t>(__func), __arg);
|
|
return __ec == thrd_nomem ? ENOMEM : __ec;
|
|
}
|
|
|
|
__libcpp_thread_id __libcpp_thread_get_current_id()
|
|
{
|
|
return thrd_current();
|
|
}
|
|
|
|
__libcpp_thread_id __libcpp_thread_get_id(const __libcpp_thread_t *__t)
|
|
{
|
|
return *__t;
|
|
}
|
|
|
|
int __libcpp_thread_join(__libcpp_thread_t *__t)
|
|
{
|
|
return thrd_join(*__t, nullptr) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
int __libcpp_thread_detach(__libcpp_thread_t *__t)
|
|
{
|
|
return thrd_detach(*__t) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
void __libcpp_thread_yield()
|
|
{
|
|
thrd_yield();
|
|
}
|
|
|
|
void __libcpp_thread_sleep_for(const chrono::nanoseconds& __ns)
|
|
{
|
|
__libcpp_timespec_t __ts = __thread_detail::__convert_to_timespec(__ns);
|
|
thrd_sleep(&__ts, nullptr);
|
|
}
|
|
|
|
// Thread local storage
|
|
int __libcpp_tls_create(__libcpp_tls_key *__key, void (*__at_exit)(void *))
|
|
{
|
|
return tss_create(__key, __at_exit) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
void *__libcpp_tls_get(__libcpp_tls_key __key)
|
|
{
|
|
return tss_get(__key);
|
|
}
|
|
|
|
int __libcpp_tls_set(__libcpp_tls_key __key, void *__p)
|
|
{
|
|
return tss_set(__key, __p) == thrd_success ? 0 : EINVAL;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif // !_LIBCPP_HAS_THREAD_LIBRARY_EXTERNAL || _LIBCPP_BUILDING_THREAD_LIBRARY_EXTERNAL
|
|
|
|
class _LIBCPP_TYPE_VIS thread;
|
|
class _LIBCPP_TYPE_VIS __thread_id;
|
|
|
|
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
|