std::thread::swap
void swap( thread& other ); | ? | (since C++11) |
|---|
交换两个线程对象的底层句柄。
参数
other | - | the thread to swap with |
|---|
返回值
%280%29
例外
noexcept规格：
noexcept
例
二次
#include <iostream>
#include <thread>
#include <chrono>
void foo()
{
std::this_thread::sleep_for(std::chrono::seconds(1));
}
void bar()
{
std::this_thread::sleep_for(std::chrono::seconds(1));
}
int main()
{
std::thread t1(foo);
std::thread t2(bar);
std::cout << "thread 1 id: " << t1.get_id() << std::endl;
std::cout << "thread 2 id: " << t2.get_id() << std::endl;
std::swap(t1, t2);
std::cout << "after std::swap(t1, t2):" << std::endl;
std::cout << "thread 1 id: " << t1.get_id() << std::endl;
std::cout << "thread 2 id: " << t2.get_id() << std::endl;
t1.swap(t2);
std::cout << "after t1.swap(t2):" << std::endl;
std::cout << "thread 1 id: " << t1.get_id() << std::endl;
std::cout << "thread 2 id: " << t2.get_id() << std::endl;
t1.join();
t2.join();
}二次
可能的产出：
二次
thread 1 id: 1892
thread 2 id: 2584
after std::swap(t1, t2):
thread 1 id: 2584
thread 2 id: 1892
after t1.swap(t2):
thread 1 id: 1892
thread 2 id: 2584二次
另见
std::swap(std::thread) (C++11) | specializes the std::swap algorithm (function template) |
|---|
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