std::swap(std::thread)
来自 cppreference.cn
| void swap( std::thread& lhs, std::thread& rhs ) noexcept; |
(C++11 起) | |
重载 std::swap 算法，用于 std::thread。交换 lhs 和 rhs 的状态。实际上调用 lhs.swap(rhs)。
目录 |
[编辑] 参数
| lhs, rhs | - | 要交换状态的线程 |
[编辑] 返回值
(无)
[编辑] 示例
运行此代码
#include <chrono> #include <iostream> #include <thread> void foo() { std::this_thread::sleep_for(std::chrono::seconds(1)); } void bar() { std::this_thread::sleep_for(std::chrono::seconds(1)); } int main() { using std::swap; std::thread t1(foo); std::thread t2(bar); std::cout << "thread 1 id: " << t1.get_id() << '\n' << "thread 2 id: " << t2.get_id() << '\n'; swap(t1, t2); std::cout << "after std::swap(t1, t2):" << '\n' << "thread 1 id: " << t1.get_id() << '\n' << "thread 2 id: " << t2.get_id() << '\n'; t1.swap(t2); std::cout << "after t1.swap(t2):" << '\n' << "thread 1 id: " << t1.get_id() << '\n' << "thread 2 id: " << t2.get_id() << '\n'; t1.join(); t2.join(); }
可能的输出
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
[编辑] 参阅
| 交换两个线程对象 (public member function) |
