C++11 this_thread::yeild(12)

原文地址：http://www.cplusplus.com/reference/thread/this_thread/yield/

function

<thread>

std::this_thread::yield

void yield() noexcept;

Yield to other threads

The calling thread yields, offering the implementation the opportunity to reschedule.
挂起当前线程的运行，给其他线程运行的机会。

This function shall be called when a thread waits for other threads to advance without blocking.

该方法应该在一个线程等待其他线程资源的时候不阻塞地调用。（即等待其他资源的时候，应该挂起该线程）

Parameters

none

Return value

none

Example

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// this_thread::yield example #include <iostream> // std::cout #include <thread> // std::thread, std::this_thread::yield #include <atomic> // std::atomic std::atomic<bool> ready (false); void count1m(int id) { while (!ready) { // wait until main() sets ready... std::this_thread::yield(); } for (volatile int i=0; i<1000000; ++i) {} std::cout << id; } int main () { std::thread threads[10]; std::cout << "race of 10 threads that count to 1 million:\n"; for (int i=0; i<10; ++i) threads[i]=std::thread(count1m,i); ready = true; // go! for (auto& th : threads) th.join(); std::cout << '\n'; return 0; }

Edit & Run

Possible output (last line may vary):

race of 10 threads that count to 1 million... 6189370542

Exception safety

No-throw guarantee: never throws exceptions.

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转载请注明出处：http://blog.csdn.net/qq844352155

author:天下无双

Email:[email protected]

2014-9-4

于GDUT

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