std::latch::latch

 

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std::latch

成员函数

latch::latch

latch::~latch

latch::count_down

latch::try_wait

latch::wait

latch::arrive_and_wait

常量

latch::max

 

constexpr explicit latch( std::ptrdiff_t expected );	(1)	(C++20 起)
latch( const latch & ) = delete;	(2)	(C++20 起)

1) 构造 latch 并初始化其内部计数器。若 expected 为负或大于 max() 则行为未定义。

2) 复制构造函数被删除。 latch 既不可复制亦不可移动。

参数

expected

-

内部计数器的初值

异常

不抛出。