std::this_thread:: sleep_for

Blocks the execution of the current thread for at least the specified sleep_duration .

This function may block for longer than sleep_duration due to scheduling or resource contention delays.

The standard recommends that a steady clock is used to measure the duration. If an implementation uses a system clock instead, the wait time may also be sensitive to clock adjustments.

Parameters

Return value

(none)

Exceptions

Any exception thrown by clock , time_point , or duration during the execution (clocks, time points, and durations provided by the standard library never throw).

Example

#include <chrono>
#include <iostream>
#include <thread>
 
int main()
{
    using namespace std::chrono_literals;
 
    std::cout << "Hello waiter\n" << std::flush;
 
    const auto start = std::chrono::high_resolution_clock::now();
    std::this_thread::sleep_for(2000ms);
    const auto end = std::chrono::high_resolution_clock::now();
    const std::chrono::duration<double, std::milli> elapsed = end - start;
 
    std::cout << "Waited " << elapsed << '\n';
}

Hello waiter
Waited 2000.13 ms

See also