std::this_thread::sleep_for

 

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Defined in header <thread>
template<class Rep, class Period > void sleep_for(conststd::chrono::duration<Rep, Period>& sleep_duration );		(since C++11)

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

sleep_duration

-

time duration to sleep

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

Run this code

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

Possible output:

Hello waiter Waited 2000.13 ms

See also

sleep_until (C++11)

stops the execution of the current thread until a specified time point (function)