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/* Copyright 2012, Sebastian Reichel <sre@ring0.de>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
public struct Timer {
private Posix.timespec time_old;
public void start() {
Posix.clock_gettime(Posix.CLOCK_MONOTONIC, out time_old);
}
public ulong ellapsed() {
ulong result;
Posix.timespec time_new;
Posix.clock_gettime(Posix.CLOCK_MONOTONIC, out time_new);
if(time_new.tv_sec < time_old.tv_sec)
result = 0;
else if(time_new.tv_sec == time_old.tv_sec)
result = (time_new.tv_nsec - time_old.tv_nsec) / 1000;
else
result = (time_new.tv_sec - time_old.tv_sec) * 1000 - (time_old.tv_nsec/1000) + (time_new.tv_nsec/1000);
time_old = time_new;
return result;
}
}
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