97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
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/*
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* Timer
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*
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* Author:
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* Gonzalo Paniagua Javier (gonzalo@novell.com
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*
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* (C) 2006 Novell, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <glib.h>
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#include <sys/time.h>
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struct _GTimer {
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struct timeval start;
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struct timeval stop;
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};
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GTimer *g_timer_new (void)
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{
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GTimer *timer;
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timer = g_new0 (GTimer, 1);
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g_timer_start (timer);
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return timer;
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}
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void
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g_timer_destroy (GTimer *timer)
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{
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g_return_if_fail (timer != NULL);
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g_free (timer);
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}
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void
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g_timer_start (GTimer *timer)
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{
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g_return_if_fail (timer != NULL);
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gettimeofday (&timer->start, NULL);
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memset (&timer->stop, 0, sizeof (struct timeval));
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}
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void
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g_timer_stop (GTimer *timer)
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{
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g_return_if_fail (timer != NULL);
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gettimeofday (&timer->stop, NULL);
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}
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gdouble
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g_timer_elapsed (GTimer *timer, gulong *microseconds)
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{
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struct timeval tv;
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gulong seconds;
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long usec;
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gdouble result;
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g_return_val_if_fail (timer != NULL, 0.0);
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if (timer->stop.tv_sec == 0 && timer->stop.tv_usec == 0) {
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gettimeofday (&tv, NULL);
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} else {
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tv = timer->stop;
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}
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usec = (tv.tv_usec) - (timer->start.tv_usec);
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seconds = tv.tv_sec - timer->start.tv_sec;
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if (microseconds) {
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if (usec < 0) {
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usec += 1000000;
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seconds--;
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}
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*microseconds = usec;
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}
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result = seconds * 1000000 + usec;
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return (result / 1000000);
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}
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