std::future_error::future_error

 

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原子标志的自由函数 atomic_flag_test_and_setatomic_flag_test_and_set_explicit (C++11)(C++11) atomic_flag_clearatomic_flag_clear_explicit (C++11)(C++11) atomic_flag_testatomic_flag_test_explicit (C++20)(C++20) atomic_flag_waitatomic_flag_wait_explicit (C++20)(C++20) atomic_flag_notify_one (C++20) atomic_flag_notify_all (C++20) 内存序 memory_order (C++11) kill_dependency (C++11) atomic_thread_fence (C++11) atomic_signal_fence (C++11) 互斥 mutex (C++11) recursive_mutex (C++11) shared_mutex (C++17) timed_mutex (C++11) recursive_timed_mutex (C++11) shared_timed_mutex (C++14) 通用锁管理 lock_guard (C++11) scoped_lock (C++17) unique_lock (C++11) shared_lock (C++14) defer_lock_ttry_to_lock_tadopt_lock_t (C++11)(C++11)(C++11) lock (C++11) try_lock (C++11) defer_locktry_to_lockadopt_lock (C++11)(C++11)(C++11) once_flag (C++11) call_once (C++11) 条件变量 condition_variable (C++11) condition_variable_any (C++11) notify_all_at_thread_exit (C++11) cv_status (C++11) 信号量 counting_semaphorebinary_semaphore (C++20)(C++20) 闩与屏障 latch (C++20) barrier (C++20) future promise (C++11) future (C++11) shared_future (C++11) packaged_task (C++11) async (C++11) launch (C++11) future_status (C++11) future_error (C++11) future_category (C++11) future_errc (C++11)

 

std::future_error

成员函数

future_error::future_error

future_error::operator=

future_error::code

future_error::what

 

future_error( const future_error& other ) noexcept;	(1)	(C++11 起)
explicit future_error( std::future_errc ec );	(2)	(C++17 起)

1) 复制构造函数，以 other 的内容初始化新 future_error 的内容。若 *this 与 other 均拥有动态类型 std::future_error 则 std::strcmp(what(), other.what()) == 0 。

2) 构造含错误码 std::make_error_code(ec) 的新 future_error 对象。

参数

other	-	要复制的另一 future_error 对象
ec	-	错误码

注解

C++17 前用户没有符合标准的构造 future_error 的方法，除了从另一 future_error 复制。 C++11 与 C++14 描述了仅为说明的接收 std::error_code 的公开构造函数，而一些实现提供这种构造函数。