| /* |
| * 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); |
| } |