std::this_thread::yield

 

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线程的支持库

主题 Original: Threads The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
thread （C++11）
this_thread命名空间 Original: this_thread namespace The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
get_id （C++11） yield （C++11）	sleep_for （C++11） sleep_until （C++11）
相互排斥 Original: Mutual exclusion The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
mutex （C++11） timed_mutex （C++11）	recursive_mutex （C++11） recursive_timed_mutex （C++11）
通用锁管理 Original: Generic lock management The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
lock_guard （C++11） unique_lock （C++11） defer_lock_t try_to_lock_t adopt_lock_t （C++11） （C++11） （C++11）	lock （C++11） try_lock （C++11） defer_lock try_to_lock adopt_lock （C++11） （C++11） （C++11）
条件变量 Original: Condition variables The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
condition_variable （C++11）
condition_variable_any （C++11）
notify_all_at_thread_exit （C++11）
cv_status （C++11）
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promise （C++11） future （C++11） shared_future （C++11） packaged_task （C++11） async （C++11）	launch （C++11） future_status （C++11） future_error （C++11） future_category （C++11） future_errc （C++11）

 

Defined in header <thread>
void yield();		（C++11 起）

提供一个提示重新安排执行线程的执行，让其他线程运行.

Original:

Provides a hint to the implementation to reschedule the execution of threads, allowing other threads to run.

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参数

（无）

Original:

(none)

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Original:

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为例

#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