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authorUlrich Drepper <drepper@redhat.com>2010-07-23 22:27:53 -0700
committerUlrich Drepper <drepper@redhat.com>2010-07-23 22:27:53 -0700
commitdbc676d4ffb074e20c6334296fc644718b485f55 (patch)
treefaa50d828662d96294423c53b2c91954627b96e6 /string/test-strcasestr.c
parentb8934257ec6dd87b5aea9c0b3a595d22a4398189 (diff)
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Add performance tests for strstr and strcasestr.
Diffstat (limited to 'string/test-strcasestr.c')
-rw-r--r--string/test-strcasestr.c197
1 files changed, 197 insertions, 0 deletions
diff --git a/string/test-strcasestr.c b/string/test-strcasestr.c
new file mode 100644
index 0000000000..547537cbd4
--- /dev/null
+++ b/string/test-strcasestr.c
@@ -0,0 +1,197 @@
+/* Test and measure strcasestr functions.
+ Copyright (C) 2010 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Written by Ulrich Drepper <drepper@redhat.com>, 2010.
+
+ The GNU C 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 2.1 of the License, or (at your option) any later version.
+
+ The GNU C 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 the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#define TEST_MAIN
+#include "test-string.h"
+
+
+#define STRCASESTR simple_strcasestr
+#define NO_ALIAS
+#define __strncasecmp strncasecmp
+#include "strcasestr.c"
+
+
+static char *
+stupid_strcasestr (const char *s1, const char *s2)
+{
+ ssize_t s1len = strlen (s1);
+ ssize_t s2len = strlen (s2);
+
+ if (s2len > s1len)
+ return NULL;
+
+ for (ssize_t i = 0; i <= s1len - s2len; ++i)
+ {
+ size_t j;
+ for (j = 0; j < s2len; ++j)
+ if (tolower (s1[i + j]) != tolower (s2[j]))
+ break;
+ if (j == s2len)
+ return (char *) s1 + i;
+ }
+
+ return NULL;
+}
+
+
+typedef char *(*proto_t) (const char *, const char *);
+
+IMPL (stupid_strcasestr, 0)
+IMPL (simple_strcasestr, 0)
+IMPL (strcasestr, 1)
+
+
+static void
+do_one_test (impl_t *impl, const char *s1, const char *s2, char *exp_result)
+{
+ char *result = CALL (impl, s1, s2);
+ if (result != exp_result)
+ {
+ error (0, 0, "Wrong result in function %s %s %s", impl->name,
+ result, exp_result);
+ ret = 1;
+ return;
+ }
+
+ if (HP_TIMING_AVAIL)
+ {
+ hp_timing_t start __attribute ((unused));
+ hp_timing_t stop __attribute ((unused));
+ hp_timing_t best_time = ~(hp_timing_t) 0;
+ size_t i;
+
+ for (i = 0; i < 32; ++i)
+ {
+ HP_TIMING_NOW (start);
+ CALL (impl, s1, s2);
+ HP_TIMING_NOW (stop);
+ HP_TIMING_BEST (best_time, start, stop);
+ }
+
+ printf ("\t%zd", (size_t) best_time);
+ }
+}
+
+
+static void
+do_test (size_t align1, size_t align2, size_t len1, size_t len2,
+ int fail)
+{
+ char *s1 = (char *) (buf1 + align1);
+ char *s2 = (char *) (buf2 + align2);
+
+ static const char d[] = "1234567890abcdef";
+#define dl (sizeof (d) - 1)
+ char *ss2 = s2;
+ for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
+ {
+ size_t t = l > dl ? dl : l;
+ ss2 = mempcpy (ss2, d, t);
+ }
+ s2[len2] = '\0';
+
+ if (fail)
+ {
+ char *ss1 = s1;
+ for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0)
+ {
+ size_t t = l > dl ? dl : l;
+ memcpy (ss1, d, t);
+ ++ss1[len2 > 7 ? 7 : len2 - 1];
+ ss1 += t;
+ }
+ }
+ else
+ {
+ memset (s1, '0', len1);
+ for (size_t i = 0; i < len2; ++i)
+ s1[len1 - len2 + i] = toupper (s2[i]);
+ }
+ s1[len1] = '\0';
+
+ if (HP_TIMING_AVAIL)
+ printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
+ len1, len2, align1, align2, fail ? "fail" : "found");
+
+ FOR_EACH_IMPL (impl, 0)
+ do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2);
+
+ if (HP_TIMING_AVAIL)
+ putchar ('\n');
+}
+
+
+static int
+test_main (void)
+{
+ test_init ();
+
+ printf ("%23s", "");
+ FOR_EACH_IMPL (impl, 0)
+ printf ("\t%s", impl->name);
+ putchar ('\n');
+
+ for (size_t klen = 2; klen < 32; ++klen)
+ for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen)
+ {
+ do_test (0, 0, hlen, klen, 0);
+ do_test (0, 0, hlen, klen, 1);
+ do_test (0, 3, hlen, klen, 0);
+ do_test (0, 3, hlen, klen, 1);
+ do_test (0, 9, hlen, klen, 0);
+ do_test (0, 9, hlen, klen, 1);
+ do_test (0, 15, hlen, klen, 0);
+ do_test (0, 15, hlen, klen, 1);
+
+ do_test (3, 0, hlen, klen, 0);
+ do_test (3, 0, hlen, klen, 1);
+ do_test (3, 3, hlen, klen, 0);
+ do_test (3, 3, hlen, klen, 1);
+ do_test (3, 9, hlen, klen, 0);
+ do_test (3, 9, hlen, klen, 1);
+ do_test (3, 15, hlen, klen, 0);
+ do_test (3, 15, hlen, klen, 1);
+
+ do_test (9, 0, hlen, klen, 0);
+ do_test (9, 0, hlen, klen, 1);
+ do_test (9, 3, hlen, klen, 0);
+ do_test (9, 3, hlen, klen, 1);
+ do_test (9, 9, hlen, klen, 0);
+ do_test (9, 9, hlen, klen, 1);
+ do_test (9, 15, hlen, klen, 0);
+ do_test (9, 15, hlen, klen, 1);
+
+ do_test (15, 0, hlen, klen, 0);
+ do_test (15, 0, hlen, klen, 1);
+ do_test (15, 3, hlen, klen, 0);
+ do_test (15, 3, hlen, klen, 1);
+ do_test (15, 9, hlen, klen, 0);
+ do_test (15, 9, hlen, klen, 1);
+ do_test (15, 15, hlen, klen, 0);
+ do_test (15, 15, hlen, klen, 1);
+ }
+
+ do_test (0, 0, page_size - 1, 16, 0);
+ do_test (0, 0, page_size - 1, 16, 1);
+
+ return ret;
+}
+
+#include "../test-skeleton.c"