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-rw-r--r--perf/cairo-perf-compare-backends.c398
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diff --git a/perf/cairo-perf-compare-backends.c b/perf/cairo-perf-compare-backends.c
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--- a/perf/cairo-perf-compare-backends.c
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@@ -1,398 +0,0 @@
-/*
- * Copyright © 2006 Red Hat, Inc.
- * Copyright © 2009 Chris Wilson
- *
- * 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
- * copyright holders not be used in advertising or publicity
- * pertaining to distribution of the software without specific,
- * written prior permission. The copyright holders make no
- * representations about the suitability of this software for any
- * purpose. It is provided "as is" without express or implied
- * warranty.
- *
- * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
- * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS 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: Carl Worth <cworth@cworth.org>
- * Chris Wilson <chris@chris-wilson.co.uk>
- */
-
-#include "cairo-perf.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <ctype.h>
-#include <math.h>
-#include <assert.h>
-
-typedef struct _cairo_perf_report_options {
- double min_change;
- int use_utf;
- int print_change_bars;
-} cairo_perf_report_options_t;
-
-typedef struct _cairo_perf_diff_files_args {
- const char **filenames;
- int num_filenames;
- cairo_perf_report_options_t options;
-} cairo_perf_diff_files_args_t;
-
-static int
-test_diff_cmp (const void *a,
- const void *b)
-{
- const test_diff_t *a_diff = a;
- const test_diff_t *b_diff = b;
-
- /* Reverse sort by magnitude of change so larger changes come
- * first */
- if (a_diff->change > b_diff->change)
- return -1;
-
- if (a_diff->change < b_diff->change)
- return 1;
-
- return 0;
-}
-
-#define CHANGE_BAR_WIDTH 70
-static void
-print_change_bar (double change,
- double max_change,
- int use_utf)
-{
- int units_per_cell = ceil (max_change / CHANGE_BAR_WIDTH);
- static char const *ascii_boxes[8] = {
- "****","***" ,"***", "**",
- "**", "*", "*", ""
- };
- static char const *utf_boxes[8] = {
- "█", "▉", "▊", "▋",
- "▌", "▍", "▎", "▏"
- };
- char const **boxes = use_utf ? utf_boxes : ascii_boxes;
-
- /* For a 1.0x speedup we want a zero-size bar to show "no
- * change". */
- change -= 1.0;
-
- while (change > units_per_cell) {
- printf ("%s", boxes[0]);
- change -= units_per_cell;
- }
-
- change /= units_per_cell;
-
- if (change > 7.5/8.0)
- printf ("%s", boxes[0]);
- else if (change > 6.5/8.0)
- printf ("%s", boxes[1]);
- else if (change > 5.5/8.0)
- printf ("%s", boxes[2]);
- else if (change > 4.5/8.0)
- printf ("%s", boxes[3]);
- else if (change > 3.5/8.0)
- printf ("%s", boxes[4]);
- else if (change > 2.5/8.0)
- printf ("%s", boxes[5]);
- else if (change > 1.5/8.0)
- printf ("%s", boxes[6]);
- else if (change > 0.5/8.0)
- printf ("%s", boxes[7]);
-}
-
-static void
-test_diff_print (test_diff_t *diff,
- double max_change,
- cairo_perf_report_options_t *options)
-{
- int i;
- double test_time;
- double change;
-
- if (diff->tests[0]->size != 0) {
- printf ("(%s, size: %d)\n",
- diff->tests[0]->name,
- diff->tests[0]->size);
- } else {
- printf ("(%s)\n", diff->tests[0]->name);
- }
-
- for (i = 0; i < diff->num_tests; i++) {
- test_time = diff->tests[i]->stats.min_ticks;
- test_time /= diff->tests[i]->stats.ticks_per_ms;
- change = diff->max / test_time;
- printf ("%8s-%s-%s\t%6.2f: %5.2fx ",
- diff->tests[i]->backend,
- diff->tests[i]->content,
- diff->tests[i]->configuration,
- diff->tests[i]->stats.min_ticks / diff->tests[i]->stats.ticks_per_ms,
- change);
-
- if (options->print_change_bars)
- print_change_bar (change, max_change, options->use_utf);
- printf ("\n");
- }
-
- printf("\n");
-}
-
-static void
-cairo_perf_reports_compare (cairo_perf_report_t *reports,
- int num_reports,
- cairo_perf_report_options_t *options)
-{
- int i;
- test_report_t **tests, *min_test;
- test_diff_t *diff, *diffs;
- int num_diffs, max_diffs;
- double max_change;
- double test_time;
- int seen_non_null;
-
- tests = xmalloc (num_reports * sizeof (test_report_t *));
-
- max_diffs = reports[0].tests_count;
- for (i = 0; i < num_reports; i++) {
- tests[i] = reports[i].tests;
- if (reports[i].tests_count > max_diffs)
- max_diffs = reports[i].tests_count;
- }
-
- diff = diffs = xmalloc (max_diffs * sizeof (test_diff_t));
-
- num_diffs = 0;
- while (1) {
- int num_tests;
-
- /* We expect iterations values of 0 when multiple raw reports
- * for the same test have been condensed into the stats of the
- * first. So we just skip these later reports that have no
- * stats. */
- seen_non_null = 0;
- for (i = 0; i < num_reports; i++) {
- while (tests[i]->name && tests[i]->stats.iterations == 0)
- tests[i]++;
- if (tests[i]->name)
- seen_non_null++;
- }
- if (! seen_non_null)
- break;
-
- /* Find the minimum of all current tests, (we have to do this
- * in case some reports don't have a particular test). */
- for (i = 0; i < num_reports; i++) {
- if (tests[i]->name) {
- min_test = tests[i];
- break;
- }
- }
- for (++i; i < num_reports; i++) {
- if (tests[i]->name && test_report_cmp_name (tests[i], min_test) < 0)
- min_test = tests[i];
- }
-
- num_tests = 0;
- for (i = 0; i < num_reports; i++) {
- test_report_t *test;
- int n = 0;
-
- test = tests[i];
- while (test[n].name &&
- test_report_cmp_name (&test[n], min_test) == 0)
- {
- n++;
- }
-
- num_tests += n;
- }
-
- /* For each report that has the current test, record it into
- * the diff structure. */
- diff->num_tests = 0;
- diff->tests = xmalloc (num_tests * sizeof (test_diff_t));
- for (i = 0; i < num_reports; i++) {
- while (tests[i]->name &&
- test_report_cmp_name (tests[i], min_test) == 0)
- {
- test_time = tests[i]->stats.min_ticks;
- if (test_time > 0) {
- test_time /= tests[i]->stats.ticks_per_ms;
- if (diff->num_tests == 0) {
- diff->min = test_time;
- diff->max = test_time;
- } else {
- if (test_time < diff->min)
- diff->min = test_time;
- if (test_time > diff->max)
- diff->max = test_time;
- }
- diff->tests[diff->num_tests++] = tests[i];
- }
- tests[i]++;
- }
- }
- diff->change = diff->max / diff->min;
-
- diff++;
- num_diffs++;
- }
- if (num_diffs == 0)
- goto DONE;
-
- qsort (diffs, num_diffs, sizeof (test_diff_t), test_diff_cmp);
-
- max_change = 1.0;
- for (i = 0; i < num_diffs; i++) {
- if (fabs (diffs[i].change) > max_change)
- max_change = fabs (diffs[i].change);
- }
-
- for (i = 0; i < num_diffs; i++) {
- diff = &diffs[i];
-
- /* Discard as uninteresting a change which is less than the
- * minimum change required, (default may be overridden on
- * command-line). */
- if (fabs (diff->change) - 1.0 < options->min_change)
- continue;
-
- test_diff_print (diff, max_change, options);
- }
-
- for (i = 0; i < num_diffs; i++)
- free (diffs[i].tests);
- DONE:
- free (diffs);
- free (tests);
-}
-
-static void
-usage (const char *argv0)
-{
- char const *basename = strrchr(argv0, '/');
- basename = basename ? basename+1 : argv0;
- fprintf (stderr,
- "Usage: %s [options] file [...]\n\n",
- basename);
- fprintf (stderr,
- "Computes significant performance differences for cairo performance reports.\n"
- "Each file should be the output of the cairo-perf program (or \"make perf\").\n"
- "The following options are available:\n"
- "\n"
- "--no-utf Use ascii stars instead of utf-8 change bars.\n"
- " Four stars are printed per factor of speedup.\n"
- "\n"
- "--no-bars Don't display change bars at all.\n\n"
- "\n"
- "--use-ms Use milliseconds to calculate differences.\n"
- " (instead of ticks which are hardware dependent)\n"
- "\n"
- "--min-change threshold[%%]\n"
- " Suppress all changes below the given threshold.\n"
- " The default threshold of 0.05 or 5%% ignores any\n"
- " speedup or slowdown of 1.05 or less. A threshold\n"
- " of 0 will cause all output to be reported.\n"
- );
- exit(1);
-}
-
-static void
-parse_args (int argc,
- char const **argv,
- cairo_perf_diff_files_args_t *args)
-{
- int i;
-
- for (i = 1; i < argc; i++) {
- if (strcmp (argv[i], "--no-utf") == 0) {
- args->options.use_utf = 0;
- }
- else if (strcmp (argv[i], "--no-bars") == 0) {
- args->options.print_change_bars = 0;
- }
- else if (strcmp (argv[i], "--min-change") == 0) {
- char *end = NULL;
- i++;
- if (i >= argc)
- usage (argv[0]);
- args->options.min_change = strtod (argv[i], &end);
- if (*end) {
- if (*end == '%') {
- args->options.min_change /= 100;
- } else {
- usage (argv[0]);
- }
- }
- }
- else {
- args->num_filenames++;
- args->filenames = xrealloc (args->filenames,
- args->num_filenames * sizeof (char *));
- args->filenames[args->num_filenames - 1] = argv[i];
- }
- }
-}
-
-int
-main (int argc,
- const char *argv[])
-{
- cairo_perf_diff_files_args_t args = {
- NULL, /* filenames */
- 0, /* num_filenames */
- {
- 0.05, /* min change */
- 1, /* use UTF-8? */
- 1, /* display change bars? */
- }
- };
- cairo_perf_report_t *reports;
- test_report_t *t;
- int i;
-
- parse_args (argc, argv, &args);
-
- if (args.num_filenames) {
- reports = xcalloc (args.num_filenames, sizeof (cairo_perf_report_t));
- for (i = 0; i < args.num_filenames; i++) {
- cairo_perf_report_load (&reports[i], args.filenames[i], i,
- test_report_cmp_name);
- printf ("loaded: %s, %d tests\n",
- args.filenames[i], reports[i].tests_count);
- }
- } else {
- args.num_filenames = 1;
- reports = xcalloc (args.num_filenames, sizeof (cairo_perf_report_t));
- cairo_perf_report_load (&reports[0], NULL, 0, test_report_cmp_name);
- }
-
- cairo_perf_reports_compare (reports, args.num_filenames, &args.options);
-
- /* Pointless memory cleanup, (would be a great place for talloc) */
- free (args.filenames);
- for (i = 0; i < args.num_filenames; i++) {
- for (t = reports[i].tests; t->name; t++) {
- free (t->samples);
- free (t->backend);
- free (t->name);
- }
- free (reports[i].tests);
- free (reports[i].configuration);
- }
- free (reports);
-
- return 0;
-}
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