Difference between revisions of "cpp/thread/sleep for"
From cppreference.com
(Undo revision 86044 by 80.15.46.74 (talk) unnecessary revert to C++1. Target revision has been C++14 for a while.) |
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std::cout << "Hello waiter" << std::endl; | std::cout << "Hello waiter" << std::endl; | ||
auto start = std::chrono::high_resolution_clock::now(); | auto start = std::chrono::high_resolution_clock::now(); | ||
| − | std::this_thread::sleep_for( | + | std::this_thread::sleep_for(2s); |
auto end = std::chrono::high_resolution_clock::now(); | auto end = std::chrono::high_resolution_clock::now(); | ||
std::chrono::duration<double, std::milli> elapsed = end-start; | std::chrono::duration<double, std::milli> elapsed = end-start; | ||
Revision as of 06:36, 14 June 2016
| Defined in header <thread>
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| template< class Rep, class Period > void sleep_for( const std::chrono::duration<Rep, Period>& sleep_duration ); |
(since C++11) | |
Blocks the execution of the current thread for at least the specified sleep_duration.
A steady clock is used to measure the duration. This function may block for longer than sleep_duration due to scheduling or resource contention delays.
Contents |
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 <iostream> #include <chrono> #include <thread> int main() { using namespace std::chrono_literals; std::cout << "Hello waiter" << std::endl; auto start = std::chrono::high_resolution_clock::now(); std::this_thread::sleep_for(2s); auto end = std::chrono::high_resolution_clock::now(); std::chrono::duration<double, std::milli> elapsed = end-start; std::cout << "Waited " << elapsed.count() << " ms\n"; }
Possible output:
Hello waiter Waited 2000.12 ms
See also
| (C++11) |
stops the execution of the current thread until a specified time point (function) |
