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0db9e010fa
By ensuring that tests take longer than a couple of seconds we eliminate systematic errors in our measurements. However, we also effectively eliminate the synchronisation overhead. To compensate, we attempt to estimate the overhead by reporting the difference between a single instance and the minimum averaged instance.
118 lines
3 KiB
C
118 lines
3 KiB
C
/*
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* Copyright © 2006 Dan Amelang
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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: Dan Amelang <dan@amelang.net>
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*/
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#include "cairo-perf.h"
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#if 0
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#define MODE cairo_perf_run
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#else
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#define MODE cairo_perf_cover_sources_and_operators
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#endif
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#define RECTANGLE_COUNT (1000)
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static struct {
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double x;
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double y;
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double width;
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double height;
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} rects[RECTANGLE_COUNT];
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static cairo_perf_ticks_t
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do_rectangles (cairo_t *cr, int width, int height, int loops)
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{
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int i;
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cairo_perf_timer_start ();
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while (loops--) {
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for (i = 0; i < RECTANGLE_COUNT; i++) {
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cairo_rectangle (cr, rects[i].x, rects[i].y,
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rects[i].width, rects[i].height);
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cairo_fill (cr);
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}
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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static cairo_perf_ticks_t
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do_rectangles_once (cairo_t *cr, int width, int height, int loops)
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{
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int i;
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cairo_perf_timer_start ();
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while (loops--) {
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for (i = 0; i < RECTANGLE_COUNT; i++) {
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cairo_rectangle (cr, rects[i].x, rects[i].y,
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rects[i].width, rects[i].height);
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}
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cairo_fill (cr);
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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static cairo_perf_ticks_t
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do_rectangle (cairo_t *cr, int width, int height, int loops)
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{
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cairo_perf_timer_start ();
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while (loops--) {
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cairo_rectangle (cr, 0, 0, width, height);
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cairo_fill (cr);
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}
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cairo_perf_timer_stop ();
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return cairo_perf_timer_elapsed ();
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}
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void
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rectangles (cairo_perf_t *perf, cairo_t *cr, int width, int height)
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{
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int i;
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if (! cairo_perf_can_run (perf, "rectangles"))
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return;
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srand (8478232);
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for (i = 0; i < RECTANGLE_COUNT; i++)
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{
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rects[i].x = rand () % width;
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rects[i].y = rand () % height;
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rects[i].width = (rand () % (width / 10)) + 1;
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rects[i].height = (rand () % (height / 10)) + 1;
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}
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MODE (perf, "one-rectangle", do_rectangle);
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MODE (perf, "rectangles", do_rectangles);
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MODE (perf, "rectangles-once", do_rectangles_once);
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}
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