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5de1508803
Remove simple_strcspn/strpbrk/strsep which are significantly slower than the generic implementations. Also remove oldstrsep and oldstrtok since they are practically identical to the generic implementation. Adjust iteration count to reduce benchmark time. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
136 lines
3.6 KiB
C
136 lines
3.6 KiB
C
/* Measure strsep functions.
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Copyright (C) 2013-2023 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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<https://www.gnu.org/licenses/>. */
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#define TEST_MAIN
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#define TEST_NAME "strsep"
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#include "bench-string.h"
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typedef char *(*proto_t) (const char **, const char *);
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IMPL (strsep, 1)
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static void
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do_one_test (impl_t * impl, const char *s1, const char *s2)
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{
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size_t i, iters = INNER_LOOP_ITERS;
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timing_t start, stop, cur;
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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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const char *s1a = s1;
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CALL (impl, &s1a, s2);
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if (s1a != NULL)
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((char*)s1a)[-1] = '1';
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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 align1, size_t align2, size_t len1, size_t len2, int fail)
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{
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char *s2 = (char *) (buf2 + align2);
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/* Search for a delimiter in a string containing mostly '0', so don't
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use '0' as a delimiter. */
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static const char d[] = "123456789abcdefg";
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#define dl (sizeof (d) - 1)
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char *ss2 = s2;
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for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0)
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{
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size_t t = l > dl ? dl : l;
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ss2 = mempcpy (ss2, d, t);
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}
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s2[len2] = '\0';
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printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:",
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len1, len2, align1, align2, fail ? "fail" : "found");
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FOR_EACH_IMPL (impl, 0)
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{
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char *s1 = (char *) (buf1 + align1);
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memset (s1, '0', len1);
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if (!fail)
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s1[len1 / 2] = '1';
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s1[len1] = '\0';
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do_one_test (impl, s1, s2);
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}
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putchar ('\n');
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}
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static int
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test_main (void)
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{
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test_init ();
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printf ("%23s", "");
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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 (size_t klen = 2; klen < 32; ++klen)
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for (size_t hlen = 4 * klen; hlen < 8 * klen; hlen += klen)
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{
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do_test (0, 0, hlen, klen, 0);
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do_test (0, 0, hlen, klen, 1);
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do_test (0, 3, hlen, klen, 0);
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do_test (0, 3, hlen, klen, 1);
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do_test (0, 9, hlen, klen, 0);
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do_test (0, 9, hlen, klen, 1);
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do_test (0, 15, hlen, klen, 0);
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do_test (0, 15, hlen, klen, 1);
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do_test (3, 0, hlen, klen, 0);
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do_test (3, 0, hlen, klen, 1);
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do_test (3, 3, hlen, klen, 0);
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do_test (3, 3, hlen, klen, 1);
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do_test (3, 9, hlen, klen, 0);
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do_test (3, 9, hlen, klen, 1);
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do_test (3, 15, hlen, klen, 0);
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do_test (3, 15, hlen, klen, 1);
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do_test (9, 0, hlen, klen, 0);
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do_test (9, 0, hlen, klen, 1);
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do_test (9, 3, hlen, klen, 0);
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do_test (9, 3, hlen, klen, 1);
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do_test (9, 9, hlen, klen, 0);
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do_test (9, 9, hlen, klen, 1);
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do_test (9, 15, hlen, klen, 0);
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do_test (9, 15, hlen, klen, 1);
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do_test (15, 0, hlen, klen, 0);
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do_test (15, 0, hlen, klen, 1);
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do_test (15, 3, hlen, klen, 0);
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do_test (15, 3, hlen, klen, 1);
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do_test (15, 9, hlen, klen, 0);
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do_test (15, 9, hlen, klen, 1);
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do_test (15, 15, hlen, klen, 0);
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do_test (15, 15, hlen, klen, 1);
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}
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do_test (0, 0, page_size - 1, 16, 0);
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do_test (0, 0, page_size - 1, 16, 1);
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return ret;
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}
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#include <support/test-driver.c>
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