Windows nanosleep

windows_nanosleep.c

#include <windows.h>	/* WinAPI */

/* Windows sleep in 100ns units */
BOOLEAN nanosleep(LONGLONG ns){
	/* Declarations */
	HANDLE timer;	/* Timer handle */
	LARGE_INTEGER li;	/* Time defintion */
	/* Create timer */
	if(!(timer = CreateWaitableTimer(NULL, TRUE, NULL)))
		return FALSE;
	/* Set timer properties */
	li.QuadPart = -ns;
	if(!SetWaitableTimer(timer, &li, 0, NULL, NULL, FALSE)){
		CloseHandle(timer);
		return FALSE;
	}
	/* Start & wait for timer */
	WaitForSingleObject(timer, INFINITE);
	/* Clean resources */
	CloseHandle(timer);
	/* Slept without problems */
	return TRUE;
}

Awesome

Thanks alot!

I don't think this is quite correct. The value passed to SetWaitableTimer should have units of 100ns. See Using Waitable Timer Objects.

For Windows versions 2004 and after, use CREATE_WAITABLE_TIMER_HIGH_RESOLUTION. See Windows Timer Resolution: The Great Rule Change

@gbburkhardt Thanks for the update! "The Great Rule Change" was easy to miss.

This solution works like a charm for me. Thanks! Also note that this solution has been posted here: https://stackoverflow.com/a/41862592/11550178. Actually, this is an official solution extracted from here: https://learn.microsoft.com/en-us/windows/win32/sync/using-waitable-timer-objects.

This solution works like a charm for me. Thanks! Also note that this solution has been posted here: https://stackoverflow.com/a/41862592/11550178. Actually, this is an official solution extracted from here: https://learn.microsoft.com/en-us/windows/win32/sync/using-waitable-timer-objects.

Show me the timings please so I know