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/* GLIB - Library of useful routines for C programming
*
* Copyright (C) 2010 Mikhail Zabaluev <mikhail.zabaluev@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <glib.h>
#define NUM_ITERATIONS 500000
static const char str_ascii[] =
"The quick brown fox jumps over the lazy dog";
static const gchar str_latin1[] =
"Zwölf Boxkämpfer jagen Viktor quer über den großen Sylter Deich";
/* Energizing GOELRO-talk in Russian, used by KDE */
static const char str_cyrillic[] =
"Широкая электрификация южных губерний даст мощный толчок подъёму "
"сельского хозяйства.";
/* First sentence from the Wikipedia article:
* http://zh.wikipedia.org/w/index.php?title=%E6%B1%89%E5%AD%97&oldid=13053137 */
static const char str_chinese[] =
"漢字，亦稱中文字、中国字，在台灣又被稱為國字，是漢字文化圈廣泛使用的一種文字，屬於表意文字的詞素音節文字";
typedef int (* GrindFunc) (const char *, gsize);
static int
grind_get_char (const char *str, gsize len)
{
gunichar acc = 0;
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
const char *p = str;
while (*p) {
acc += g_utf8_get_char (p);
p = g_utf8_next_char (p);
}
}
return acc;
}
static int
grind_get_char_validated (const char *str, gsize len)
{
gunichar acc = 0;
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
const char *p = str;
while (*p) {
acc += g_utf8_get_char_validated (p, -1);
p = g_utf8_next_char (p);
}
}
return acc;
}
static int
grind_utf8_to_ucs4 (const char *str, gsize len)
{
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
gunichar *ustr;
ustr = g_utf8_to_ucs4 (str, -1, NULL, NULL, NULL);
g_free (ustr);
}
return 0;
}
static int
grind_get_char_backwards (const char *str, gsize len)
{
gunichar acc = 0;
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
const char *p = str + len;
do
{
p = g_utf8_prev_char (p);
acc += g_utf8_get_char (p);
}
while (p != str);
}
return acc;
}
static int
grind_utf8_to_ucs4_sized (const char *str, gsize len)
{
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
gunichar *ustr;
ustr = g_utf8_to_ucs4 (str, len, NULL, NULL, NULL);
g_free (ustr);
}
return 0;
}
static int
grind_utf8_to_ucs4_fast (const char *str, gsize len)
{
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
gunichar *ustr;
ustr = g_utf8_to_ucs4_fast (str, -1, NULL);
g_free (ustr);
}
return 0;
}
static int
grind_utf8_to_ucs4_fast_sized (const char *str, gsize len)
{
int i;
for (i = 0; i < NUM_ITERATIONS; i++)
{
gunichar *ustr;
ustr = g_utf8_to_ucs4_fast (str, len, NULL);
g_free (ustr);
}
return 0;
}
static void
perform_for (GrindFunc grind_func, const char *str, const char *label)
{
gsize len;
gulong bytes_ground;
gdouble time_elapsed;
gdouble result;
len = strlen (str);
bytes_ground = (gulong) len * NUM_ITERATIONS;
g_test_timer_start ();
grind_func (str, len);
time_elapsed = g_test_timer_elapsed ();
result = ((gdouble) bytes_ground / time_elapsed) * 1.0e-6;
g_test_maximized_result (result, "%-9s %6.1f MB/s", label, result);
}
static void
perform (gconstpointer data)
{
GrindFunc grind_func = (GrindFunc) data;
if (!g_test_perf ())
return;
perform_for (grind_func, str_ascii, "ASCII:");
perform_for (grind_func, str_latin1, "Latin-1:");
perform_for (grind_func, str_cyrillic, "Cyrillic:");
perform_for (grind_func, str_chinese, "Chinese:");
}
int
main (int argc, char **argv)
{
g_test_init (&argc, &argv, NULL);
if (g_test_perf ())
{
g_test_add_data_func ("/utf8/perf/get_char", grind_get_char, perform);
g_test_add_data_func ("/utf8/perf/get_char-backwards", grind_get_char_backwards, perform);
g_test_add_data_func ("/utf8/perf/get_char_validated", grind_get_char_validated, perform);
g_test_add_data_func ("/utf8/perf/utf8_to_ucs4", grind_utf8_to_ucs4, perform);
g_test_add_data_func ("/utf8/perf/utf8_to_ucs4-sized", grind_utf8_to_ucs4_sized, perform);
g_test_add_data_func ("/utf8/perf/utf8_to_ucs4_fast", grind_utf8_to_ucs4_fast, perform);
g_test_add_data_func ("/utf8/perf/utf8_to_ucs4_fast-sized", grind_utf8_to_ucs4_fast_sized, perform);
}
return g_test_run ();
}
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