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Showing content from https://cplusplus.com/reference/thread/this_thread/yield/ below:

function

<thread>

Yield to other threads

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

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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;
}

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

sleep_until

Sleep until time point (function)

sleep_for

Sleep for time span (function)

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