Yup. But this only works in C++11 and later. #include <chrono> #include <thread> … std::this_thread::sleep_for(std::chrono::milliseconds(ms)); where ms is the amount of time you want to sleep in milliseconds. You can also replace milliseconds with nanoseconds, microseconds, seconds, minutes, or hours. (These are specializations of the type std::chrono::duration.) Update: In C++14, if you’re sleeping for a … Read more
Calling sleep in a loop typically leads to poor performance. For example: while (true) { if (stream.available() > 0) { // read input } sleep(MILLISECONDS); } If MILLISECONDS is too large, then this code will take a long time to realize that input is available. If MILLISECONDS is too small, then this code will waste … Read more
One place where it finds use is to create a delay. Lets say you’ve built a crawler that uses curl/file_get_contents to get remote pages. Now you don’t want to bombard the remote server with too many requests in short time. So you introduce a delay between consecutive requests. sleep takes the argument in seconds, its … Read more
Because Win32 API’s Sleep isn’t a high-precision sleep, and has a maximum granularity. The best way to get a precision sleep is to sleep a bit less (~50 ms) and do a busy-wait. To find the exact amount of time you need to busywait, get the resolution of the system clock using timeGetDevCaps and multiply … Read more
You can try: val a = 1 Thread.sleep(1000) // wait for 1000 millisecond val b = 2 You can change 1000 to other values to accommodate to your needs.
According to MSDN’s documentation for Sleep: A value of zero causes the thread to relinquish the remainder of its time slice to any other thread that is ready to run. If there are no other threads ready to run, the function returns immediately, and the thread continues execution. The important thing to realize is that … Read more
Does pgsql have a waitfor statement like t-sql. Yes, pg_sleep: pg=> SELECT pg_sleep(10); pg_sleep ———- (1 row)
You should try it, just have a script that sleeps for more than your maximum execution time. <?php sleep(ini_get(‘max_execution_time’) + 10); ?> Spoiler: Under Linux, sleeping time is ignored, but under Windows, it counts as execution time.
One difference is that System.Threading.Timer dispatches the callback on a thread pool thread, rather than creating a new thread every time. If you need this to happen more than once during the life of your application, this will save the overhead of creating and destroying a bunch of threads (a process which is very resource … Read more
This indicates a mis-understanding of sleep functions. The parameter you pass is a minimum time for sleeping. There’s no guarantee that the thread will wake up after exactly the time specified. In fact, threads don’t “wake up” at all, but are rather chosen for execution by the OS scheduler. The scheduler might choose to wait … Read more