std::swap(std::promise)

 

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原子类型 atomic (C++11) atomic_ref (C++20) atomic_flag (C++11) 原子类型的初始化 atomic_init (C++11)(在 C++20 中弃用) ATOMIC_VAR_INIT (C++11)(在 C++20 中弃用) ATOMIC_FLAG_INIT (C++11) 内存排序 memory_order (C++11) kill_dependency (C++11)(在 C++26 中弃用) atomic_thread_fence (C++11) atomic_signal_fence (C++11) 原子操作的自由函数 atomic_storeatomic_store_explicit (C++11)(C++11) atomic_loadatomic_load_explicit (C++11)(C++11) atomic_exchangeatomic_exchange_explicit (C++11)(C++11) atomic_compare_exchange_weakatomic_compare_exchange_weak_explicitatomic_compare_exchange_strongatomic_compare_exchange_strong_explicit (C++11)(C++11)(C++11)(C++11) atomic_fetch_addatomic_fetch_add_explicit (C++11)(C++11) atomic_fetch_subatomic_fetch_sub_explicit (C++11)(C++11) atomic_fetch_andatomic_fetch_and_explicit (C++11)(C++11) atomic_fetch_oratomic_fetch_or_explicit (C++11)(C++11) atomic_fetch_xoratomic_fetch_xor_explicit (C++11)(C++11) atomic_fetch_maxatomic_fetch_max_explicit (C++26)(C++26) atomic_fetch_minatomic_fetch_min_explicit (C++26)(C++26) atomic_is_lock_free (C++11) atomic_waitatomic_wait_explicit (C++20)(C++20) atomic_notify_one (C++20) atomic_notify_all (C++20) 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)

 

std::promise

成员函数

promise::promise

promise::~promise

promise::operator=

promise::swap

获取结果

promise::get_future

设置结果

promise::set_value

promise::set_value_at_thread_exit

promise::set_exception

promise::set_exception_at_thread_exit

非成员函数

swap(std::promise)

辅助类

uses_allocator<std::promise>

 

在头文件 <future> 中定义
template< class R > void swap( promise<R>& lhs, promise<R>& rhs ) noexcept;		(since C++11)

为 std::promise 特化 std::swap 算法。 交换 lhs 与 rhs 的共享状态。 有效地调用 lhs.swap(rhs)。

参数

lhs, rhs

-

要交换状态的 promise

返回值

(无)

参见

swap	交换两个 promise 对象 (公共成员函数)