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149 lines
3.3 KiB
C
149 lines
3.3 KiB
C
/* Measure strcat 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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#define TEST_MAIN
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#define TEST_NAME "strcat"
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#include "bench-string.h"
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typedef char *(*proto_t) (char *, const char *);
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char *simple_strcat (char *, const char *);
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IMPL (simple_strcat, 0)
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IMPL (strcat, 1)
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char *
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simple_strcat (char *dst, const char *src)
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{
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char *ret = dst;
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while (*dst++ != '\0');
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--dst;
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while ((*dst++ = *src++) != '\0');
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return ret;
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}
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static void
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do_one_test (impl_t *impl, char *dst, const char *src)
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{
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size_t k = strlen (dst), i, iters = INNER_LOOP_ITERS;
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timing_t start, stop, cur;
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if (CALL (impl, dst, src) != dst)
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{
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error (0, 0, "Wrong result in function %s %p %p", impl->name,
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CALL (impl, dst, src), dst);
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ret = 1;
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return;
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}
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if (strcmp (dst + k, src) != 0)
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{
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error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
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impl->name, dst, src);
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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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dst[k] = '\0';
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CALL (impl, dst, src);
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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 max_char)
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{
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size_t i;
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char *s1, *s2;
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align1 &= 7;
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if (align1 + len1 >= page_size)
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return;
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align2 &= 7;
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if (align2 + len1 + len2 >= page_size)
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return;
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s1 = (char *) (buf1 + align1);
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s2 = (char *) (buf2 + align2);
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for (i = 0; i < len1; ++i)
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s1[i] = 32 + 23 * i % (max_char - 32);
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s1[len1] = '\0';
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for (i = 0; i < len2; i++)
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s2[i] = 32 + 23 * i % (max_char - 32);
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printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2);
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FOR_EACH_IMPL (impl, 0)
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{
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s2[len2] = '\0';
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do_one_test (impl, s2, s1);
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}
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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 ("%28s", "");
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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 < 16; ++i)
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{
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do_test (0, 0, i, i, 127);
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do_test (0, 0, i, i, 255);
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do_test (0, i, i, i, 127);
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do_test (i, 0, i, i, 255);
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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, 0, 8 << i, 8 << i, 127);
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do_test (8 - i, 2 * i, 8 << i, 8 << i, 127);
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do_test (0, 0, 8 << i, 2 << i, 127);
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do_test (8 - i, 2 * i, 8 << i, 2 << i, 127);
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}
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for (i = 1; i < 8; ++i)
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{
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do_test (i, 2 * i, 8 << i, 1, 127);
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do_test (2 * i, i, 8 << i, 1, 255);
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do_test (i, i, 8 << i, 10, 127);
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do_test (i, i, 8 << i, 10, 255);
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}
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return ret;
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}
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#include "../test-skeleton.c"
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