std::this_thread::yield
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| Defined in header <thread>
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| void yield(); |
(C + + 11以来) | |
他のスレッドが実行できるように、スレッドの実行をスケジュール変更するヒントを実装に提供.
Original:
Provides a hint to the implementation to reschedule the execution of threads, allowing other threads to run.
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[編集] パラメータ
(なし)
Original:
(none)
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[編集] 値を返します
(なし)
Original:
(none)
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[編集] 例
#include <iostream> #include <chrono> #include <thread> // "busy sleep" while suggesting that other threads run // for a small amount of time void little_sleep(std::chrono::microseconds us) { auto start = std::chrono::high_resolution_clock::now(); auto end = start + us; do { std::this_thread::yield(); } while (std::chrono::high_resolution_clock::now() < end); } int main() { auto start = std::chrono::high_resolution_clock::now(); little_sleep(std::chrono::microseconds(100)); auto elapsed = std::chrono::high_resolution_clock::now() - start; std::cout << "waited for " << std::chrono::duration_cast<std::chrono::microseconds>(elapsed).count() << " microseconds\n"; }
Possible output:
waited for 128 microseconds