\n" << std::flush; const auto start{now()}; std::this_thread::sleep_until(awake_time()); std::chrono::duration<double, std::milli> elapsed{now() - start}; std::cout << "已等待 " << elapsed.count() << " ms\n"; } 可能的输出: 你好,等待者... 已等待 2000.17 ms...
我们还是先看源码,与std::thread不同,this_thread并不是一个类,而是命名空间。this_thread源码和thread类一样,都位于libstdc++-v3\include\std\thread文件中,其中this_thread命名空间的源码如下: /** @namespace std::this_thread * @brief ISO C++ 2011 entities sub-namespace for thread. * 30.3.2 Name...
#include <chrono> #include <iostream> #include <thread> int main() { using namespace std::chrono_literals; std::cout << "你好,等待者\n" << std::flush; const auto start = std::chrono::high_resolution_clock::now(); std::this_thread::sleep_for(2000ms); const auto end = std::...
Run this code #include <chrono>#include <iostream>#include <thread>// "busy sleep" while suggesting that other threads run// for a small amount of timevoidlittle_sleep(std::chrono::microsecondsus){autostart=std::chrono::high_resolution_clock::now();autoend=start+us;do{std::this_thread:...
1.1 构造函数 ℳ： std::thread::thread -cppreference.com thread() noexcept;(since C++11)threa...
cout<<"Thread ID:"<< std::this_thread::get_id() <<endl;return; }voidSortVector(vector<int> &vec) { std::sort(vec.begin(), vec.end());return; }intmain() { cout<<"Concurrency:"<< std::thread::hardware_concurrency() <<endl; ...
4.4 this_thread::yield(): 放弃当前线程的执行,让出自己的时间片给其他线程使用,特定适用于CPU非常忙碌的时候,否则建议使用与,以便于其他目的。 (参考网站:CSDN、cppreference.com、cplusplus.com等) (参考书目:《深入理解C++11》、《深入应用C++11》等) ...
std::this_thread::sleep_for(std::chrono::milliseconds(10)); } }intn =0; };intmain(){intn =0; foo f; baz b; std::thread t1;// t1 is not a threadstd::threadt2(f1, n +1);// pass by valuestd::threadt3(f2, std::ref(n));// pass by referencestd::threadt4(std::move...
Move 构造函数 thread(thread&& x) noexcept; 默认构造函数,创建一个空的 std::thread 执行对象。 初始化构造函数,创建一个 std::thread 对象,该 std::thread 对象可被 joinable,新产生的线程会调用 fn 函数,该函数的参数由 args 给出。 拷贝构造函数(被禁用),意味着 std::thread 对象不可拷贝构造。 Mov...
#define __STDCPP_THREADS__ __cplusplus class thread; void swap(thread& x, thread& y); namespace this_thread { thread::id get_id(); void yield(); template <class Clock, class Duration> void sleep_until(const chrono::time_point<Clock, Duration>& abs_time); ...