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79 lines
2.1 KiB
C
79 lines
2.1 KiB
C
/*
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* Copyright © 2006 Mozilla Corporation
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* Copyright © 2006 Red Hat, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software
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* and its documentation for any purpose is hereby granted without
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* fee, provided that the above copyright notice appear in all copies
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* and that both that copyright notice and this permission notice
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* appear in supporting documentation, and that the name of
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* the authors not be used in advertising or publicity pertaining to
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* distribution of the software without specific, written prior
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* permission. The authors make no representations about the
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* suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
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* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
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* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* Authors: Vladimir Vukicevic <vladimir@pobox.com>
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* Carl Worth <cworth@cworth.org>
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*/
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#include <signal.h>
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#include <sys/time.h>
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#include <unistd.h>
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#ifdef _POSIX_PRIORITY_SCHEDULING
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#include <sched.h>
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#endif
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#include "cairo-perf.h"
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/* timers */
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typedef struct _cairo_perf_timer
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{
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struct timeval start;
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struct timeval stop;
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} cairo_perf_timer_t;
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static cairo_perf_timer_t timer;
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void
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cairo_perf_timer_start (void) {
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gettimeofday (&timer.start, NULL);
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}
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void
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cairo_perf_timer_stop (void) {
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gettimeofday (&timer.stop, NULL);
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}
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cairo_perf_ticks_t
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cairo_perf_timer_elapsed (void) {
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cairo_perf_ticks_t usec;
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usec = (timer.stop.tv_sec - timer.start.tv_sec) * 1000000;
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usec += (timer.stop.tv_usec - timer.start.tv_usec);
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return usec;
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}
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cairo_perf_ticks_t
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cairo_perf_ticks_per_second (void) {
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return 1000000;
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}
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/* yield */
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void
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cairo_perf_yield (void) {
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#ifdef _POSIX_PRIORITY_SCHEDULING
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sched_yield ();
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#endif
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}
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