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/*
* Copyright (c) 2007 Netlabs
* Copyright (c) 2006 Mozilla Corporation
* Copyright (c) 2006 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* the authors not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The authors make no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL,
* 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.
*
* Authors: Peter Weilbacher <mozilla@weilbacher.org>
* Vladimir Vukicevic <vladimir@pobox.com> (win32/linux code)
* Carl Worth <cworth@cworth.org> (win32/linux code)
*/
#define INCL_BASE
#include <os2.h>
#include "cairo-perf.h"
/* timers */
typedef struct _cairo_perf_timer
{
/* make them double so that they can store the full QWORD precision */
double start;
double stop;
} cairo_perf_timer_t;
static cairo_perf_timer_t timer;
static cairo_perf_timer_synchronize_t cairo_perf_timer_synchronize = NULL;
static void *cairo_perf_timer_synchronize_closure = NULL;
void
cairo_perf_timer_set_synchronize (cairo_perf_timer_synchronize_t synchronize,
void *closure)
{
cairo_perf_timer_synchronize = synchronize;
cairo_perf_timer_synchronize_closure = closure;
}
void
cairo_perf_timer_start (void) {
QWORD time;
if (cairo_perf_timer_synchronize)
cairo_perf_timer_synchronize (cairo_perf_timer_synchronize_closure);
DosTmrQueryTime(&time);
timer.start = (time.ulHi*4294967296.0 + time.ulLo);
}
void
cairo_perf_timer_stop (void) {
QWORD time;
if (cairo_perf_timer_synchronize)
cairo_perf_timer_synchronize (cairo_perf_timer_synchronize_closure);
DosTmrQueryTime(&time);
timer.stop = (time.ulHi*4294967296.0 + time.ulLo);
}
cairo_perf_ticks_t
cairo_perf_timer_elapsed (void) {
ULONG freq;
DosTmrQueryFreq(&freq);
/* return time difference in milliseconds */
return (timer.stop - timer.start) / freq * 1000;
}
cairo_perf_ticks_t
cairo_perf_ticks_per_second (void) {
return 1000; /* in ms */
}
/* yield */
void
cairo_perf_yield (void) {
/* try to deactivate this thread until the scheduler calls it again */
DosSleep (0);
}
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