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177 lines
3.7 KiB
C
177 lines
3.7 KiB
C
/* Measure strpbrk functions.
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Copyright (C) 2013-2014 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef STRPBRK_RESULT
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# define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
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# define RES_TYPE char *
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# define TEST_MAIN
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# define TEST_NAME "strpbrk"
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# include "bench-string.h"
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typedef char *(*proto_t) (const char *, const char *);
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char *simple_strpbrk (const char *, const char *);
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char *stupid_strpbrk (const char *, const char *);
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IMPL (stupid_strpbrk, 0)
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IMPL (simple_strpbrk, 0)
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IMPL (strpbrk, 1)
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char *
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simple_strpbrk (const char *s, const char *rej)
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{
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const char *r;
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char c;
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while ((c = *s++) != '\0')
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for (r = rej; *r != '\0'; ++r)
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if (*r == c)
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return (char *) s - 1;
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return NULL;
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}
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char *
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stupid_strpbrk (const char *s, const char *rej)
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{
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size_t ns = strlen (s), nrej = strlen (rej);
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size_t i, j;
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for (i = 0; i < ns; ++i)
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for (j = 0; j < nrej; ++j)
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if (s[i] == rej[j])
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return (char *) s + i;
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return NULL;
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}
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#endif
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static void
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do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
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{
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RES_TYPE res = CALL (impl, s, rej);
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size_t i, iters = INNER_LOOP_ITERS;
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timing_t start, stop, cur;
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if (res != exp_res)
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{
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error (0, 0, "Wrong result in function %s %p %p", impl->name,
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(void *) res, (void *) exp_res);
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ret = 1;
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return;
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}
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TIMING_NOW (start);
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for (i = 0; i < iters; ++i)
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{
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CALL (impl, s, rej);
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}
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TIMING_NOW (stop);
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TIMING_DIFF (cur, start, stop);
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TIMING_PRINT_MEAN ((double) cur, (double) iters);
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}
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static void
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do_test (size_t align, size_t pos, size_t len)
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{
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size_t i;
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int c;
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RES_TYPE result;
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char *rej, *s;
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align &= 7;
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if (align + pos + 10 >= page_size || len > 240)
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return;
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rej = (char *) (buf2 + (random () & 255));
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s = (char *) (buf1 + align);
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for (i = 0; i < len; ++i)
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{
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rej[i] = random () & 255;
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if (!rej[i])
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rej[i] = random () & 255;
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if (!rej[i])
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rej[i] = 1 + (random () & 127);
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}
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rej[len] = '\0';
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for (c = 1; c <= 255; ++c)
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if (strchr (rej, c) == NULL)
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break;
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for (i = 0; i < pos; ++i)
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{
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s[i] = random () & 255;
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if (strchr (rej, s[i]))
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{
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s[i] = random () & 255;
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if (strchr (rej, s[i]))
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s[i] = c;
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}
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}
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s[pos] = rej[random () % (len + 1)];
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if (s[pos])
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{
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for (i = pos + 1; i < pos + 10; ++i)
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s[i] = random () & 255;
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s[i] = '\0';
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}
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result = STRPBRK_RESULT (s, pos);
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printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s, rej, result);
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putchar ('\n');
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}
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int
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test_main (void)
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{
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size_t i;
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test_init ();
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printf ("%32s", "");
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FOR_EACH_IMPL (impl, 0)
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printf ("\t%s", impl->name);
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putchar ('\n');
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for (i = 0; i < 32; ++i)
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{
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do_test (0, 512, i);
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do_test (i, 512, i);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (0, 16 << i, 4);
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do_test (i, 16 << i, 4);
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}
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for (i = 1; i < 8; ++i)
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do_test (i, 64, 10);
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for (i = 0; i < 64; ++i)
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do_test (0, i, 6);
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return ret;
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}
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#include "../test-skeleton.c"
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