void
cairo_perf_run (cairo_perf_t *perf,
const char *name,
cairo_perf_func_t perf_func)
{
static cairo_bool_t first_run = TRUE;
unsigned int i, similar, has_similar;
cairo_perf_ticks_t *times;
cairo_stats_t stats = {0.0, 0.0};
int low_std_dev_count;
if (perf->list_only) {
printf ("%s\n", name);
return;
}
if (first_run) {
if (perf->raw)
printf ("[ # ] %s-%-s %s %s %s ...\n",
"backend", "content", "test-size", "ticks-per-ms", "time(ticks)");
else
printf ("[ # ] %8s-%-4s %28s %8s %8s %5s %5s %s\n",
"backend", "content", "test-size", "min(ticks)", "min(ms)", "median(ms)",
"stddev.", "iterations");
first_run = FALSE;
}
times = perf->times;
has_similar = cairo_perf_has_similar (perf);
for (similar = 0; similar <= has_similar; similar++) {
/* We run one iteration in advance to warm caches, etc. */
cairo_perf_yield ();
if (similar)
cairo_push_group_with_content (perf->cr,
cairo_boilerplate_content (perf->target->content));
(perf_func) (perf->cr, perf->size, perf->size);
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
low_std_dev_count = 0;
for (i =0; i < perf->iterations; i++) {
cairo_perf_yield ();
if (similar)
cairo_push_group_with_content (perf->cr,
cairo_boilerplate_content (perf->target->content));
times[i] = (perf_func) (perf->cr, perf->size, perf->size);
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
if (perf->raw) {
if (i == 0)
printf ("[*] %s-%s %s-%d %g",
perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size,
cairo_perf_ticks_per_second () / 1000.0);
printf (" %lld", (long long) times[i]);
} else if (! perf->exact_iterations) {
if (i > 0) {
_cairo_stats_compute (&stats, times, i+1);
if (stats.std_dev <= CAIRO_PERF_LOW_STD_DEV)
{
low_std_dev_count++;
if (low_std_dev_count >= CAIRO_PERF_STABLE_STD_DEV_COUNT)
break;
} else {
low_std_dev_count = 0;
}
}
}
}
if (perf->raw) {
printf ("\n");
} else {
_cairo_stats_compute (&stats, times, i);
printf ("[%3d] %8s-%-5s %26s-%-3d ",
perf->test_number, perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size);
printf ("%10lld %#8.3f %#8.3f %#5.2f%% %3d\n",
(long long) stats.min_ticks,
(stats.min_ticks * 1000.0) / cairo_perf_ticks_per_second (),
(stats.median_ticks * 1000.0) / cairo_perf_ticks_per_second (),
stats.std_dev * 100.0, stats.iterations);
}
perf->test_number++;
}
}
void
cairo_perf_run (cairo_perf_t *perf,
const char *name,
cairo_perf_func_t perf_func,
cairo_count_func_t count_func)
{
static cairo_bool_t first_run = TRUE;
unsigned int i, similar, has_similar;
cairo_time_t *times;
cairo_stats_t stats = {0.0, 0.0};
int low_std_dev_count;
if (perf->list_only) {
printf ("%s\n", name);
return;
}
if (first_run) {
if (perf->raw) {
printf ("[ # ] %s.%-s %s %s %s ...\n",
"backend", "content", "test-size", "ticks-per-ms", "time(ticks)");
}
if (perf->summary) {
fprintf (perf->summary,
"[ # ] %8s.%-4s %28s %8s %8s %5s %5s %s %s\n",
"backend", "content", "test-size", "min(ticks)", "min(ms)", "median(ms)",
"stddev.", "iterations", "overhead");
}
first_run = FALSE;
}
times = perf->times;
if (getenv ("CAIRO_PERF_OUTPUT") != NULL) { /* check output */
char *filename;
cairo_status_t status;
xasprintf (&filename, "%s.%s.%s.%d.out.png",
name, perf->target->name,
_content_to_string (perf->target->content, 0),
perf->size);
cairo_save (perf->cr);
perf_func (perf->cr, perf->size, perf->size, 1);
cairo_restore (perf->cr);
status = cairo_surface_write_to_png (cairo_get_target (perf->cr), filename);
if (status) {
fprintf (stderr, "Failed to generate output check '%s': %s\n",
filename, cairo_status_to_string (status));
return;
}
free (filename);
}
has_similar = cairo_perf_has_similar (perf);
for (similar = 0; similar <= has_similar; similar++) {
unsigned loops;
if (perf->summary) {
fprintf (perf->summary,
"[%3d] %8s.%-5s %26s.%-3d ",
perf->test_number, perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size);
fflush (perf->summary);
}
/* We run one iteration in advance to warm caches and calibrate. */
cairo_perf_yield ();
if (similar)
cairo_push_group_with_content (perf->cr,
cairo_boilerplate_content (perf->target->content));
else
cairo_save (perf->cr);
perf_func (perf->cr, perf->size, perf->size, 1);
loops = cairo_perf_calibrate (perf, perf_func);
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
else
cairo_restore (perf->cr);
low_std_dev_count = 0;
for (i =0; i < perf->iterations; i++) {
cairo_perf_yield ();
if (similar)
cairo_push_group_with_content (perf->cr,
cairo_boilerplate_content (perf->target->content));
else
cairo_save (perf->cr);
times[i] = perf_func (perf->cr, perf->size, perf->size, loops) ;
if (similar)
cairo_pattern_destroy (cairo_pop_group (perf->cr));
else
cairo_restore (perf->cr);
if (perf->raw) {
if (i == 0)
printf ("[*] %s.%s %s.%d %g",
perf->target->name,
_content_to_string (perf->target->content, similar),
name, perf->size,
_cairo_time_to_double (_cairo_time_from_s (1.)) / 1000.);
printf (" %lld", (long long) (times[i] / (double) loops));
} else if (! perf->exact_iterations) {
if (i > 0) {
_cairo_stats_compute (&stats, times, i+1);
if (stats.std_dev <= CAIRO_PERF_LOW_STD_DEV) {
low_std_dev_count++;
if (low_std_dev_count >= CAIRO_PERF_STABLE_STD_DEV_COUNT)
break;
} else {
low_std_dev_count = 0;
}
}
}
}
if (perf->raw)
printf ("\n");
if (perf->summary) {
_cairo_stats_compute (&stats, times, i);
if (count_func != NULL) {
double count = count_func (perf->cr, perf->size, perf->size);
fprintf (perf->summary,
"%.3f [%10lld/%d] %#8.3f %#8.3f %#5.2f%% %3d: %.2f\n",
stats.min_ticks /(double) loops,
(long long) stats.min_ticks, loops,
_cairo_time_to_s (stats.min_ticks) * 1000.0 / loops,
_cairo_time_to_s (stats.median_ticks) * 1000.0 / loops,
stats.std_dev * 100.0, stats.iterations,
count / _cairo_time_to_s (stats.min_ticks));
} else {
fprintf (perf->summary,
"%.3f [%10lld/%d] %#8.3f %#8.3f %#5.2f%% %3d\n",
stats.min_ticks /(double) loops,
(long long) stats.min_ticks, loops,
_cairo_time_to_s (stats.min_ticks) * 1000.0 / loops,
_cairo_time_to_s (stats.median_ticks) * 1000.0 / loops,
stats.std_dev * 100.0, stats.iterations);
}
fflush (perf->summary);
}
perf->test_number++;
}
}
