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perf: Rescale the histogram for the terminal

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If running ./cairo-perf-print in a terminal, query the terminal size and
rescale the histogram to use the maximum available space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-06-11 11:47:24 +01:00
parent 9a12c2e023
commit b9f0ef4496
2 changed files with 37 additions and 2 deletions
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2
configure.ac
View file

@ -11,6 +11,8 @@ AC_USE_SYSTEM_EXTENSIONS
AC_CONFIG_SRCDIR(src/cairo.h)
AC_CONFIG_HEADERS(config.h)
AC_CHECK_HEADERS([unistd.h sys/ioctl.h])
AM_INIT_AUTOMAKE([1.11 foreign -Wall no-define no-dist-gzip dist-xz])
AM_SILENT_RULES([yes])

37
perf/cairo-perf-print.c
View file

@ -27,11 +27,27 @@
* Chris Wilson <chris@chris-wilson.co.uk>
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include "cairo-perf.h"
#include "cairo-stats.h"
#include <stdio.h>
#if HAVE_UNISTD_H && HAVE_SYS_IOCTL_H
#define USE_TERMINAL_SIZE 1
#else
#define USE_TERMINAL_SIZE 0
#error bang
#endif
#if USE_TERMINAL_SIZE
#include <unistd.h>
#include <sys/ioctl.h>
#endif
static void
report_print (const cairo_perf_report_t *report,
int show_histogram)
@ -39,8 +55,25 @@ report_print (const cairo_perf_report_t *report,
const test_report_t *test;
cairo_histogram_t h;
if (show_histogram && !_cairo_histogram_init (&h, 80, 23))
show_histogram = 0;
if (show_histogram) {
int num_rows = 23;
int num_cols = 80;
#if USE_TERMINAL_SIZE
int fd = fileno(stdout);
if (isatty(fd)) {
struct winsize ws;
if(ioctl(fd, TIOCGWINSZ, &ws) == 0 ) {
num_rows = ws.ws_row - 1;
num_cols = ws.ws_col;
}
}
#endif
if (!_cairo_histogram_init (&h, num_cols, num_rows))
show_histogram = 0;
}
for (test = report->tests; test->name != NULL; test++) {
if (test->stats.iterations == 0)