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194 lines
4.6 KiB
C
194 lines
4.6 KiB
C
/* Measure strcpy functions.
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Copyright (C) 2013-2015 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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#ifdef WIDE
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# include <wchar.h>
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# define CHAR wchar_t
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# define UCHAR wchar_t
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# define sfmt "ls"
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# define BIG_CHAR WCHAR_MAX
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# define SMALL_CHAR 1273
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# define STRCMP wcscmp
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# define MEMCMP wmemcmp
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# define MEMSET wmemset
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#else
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# define CHAR char
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# define UCHAR unsigned char
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# define sfmt "s"
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# define BIG_CHAR CHAR_MAX
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# define SMALL_CHAR 127
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# define STRCMP strcmp
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# define MEMCMP memcmp
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# define MEMSET memset
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#endif
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#ifndef STRCPY_RESULT
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# define STRCPY_RESULT(dst, len) dst
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# define TEST_MAIN
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# ifndef WIDE
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# define TEST_NAME "strcpy"
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# else
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# define TEST_NAME "wcscpy"
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# endif
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# include "bench-string.h"
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# ifndef WIDE
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# define SIMPLE_STRCPY simple_strcpy
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# define STRCPY strcpy
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# else
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# define SIMPLE_STRCPY simple_wcscpy
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# define STRCPY wcscpy
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# endif
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CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);
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IMPL (SIMPLE_STRCPY, 0)
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IMPL (STRCPY, 1)
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CHAR *
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SIMPLE_STRCPY (CHAR *dst, const CHAR *src)
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{
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CHAR *ret = dst;
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while ((*dst++ = *src++) != '\0');
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return ret;
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}
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#endif
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typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
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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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size_t len __attribute__((unused)))
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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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if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
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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), STRCPY_RESULT (dst, len));
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ret = 1;
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return;
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}
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if (STRCMP (dst, src) != 0)
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{
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error (0, 0,
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"Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
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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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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 len, 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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/* For wcscpy: align1 and align2 here mean alignment not in bytes,
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but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
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len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
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align1 &= 7;
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if ((align1 + len) * sizeof(CHAR) >= page_size)
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return;
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align2 &= 7;
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if ((align2 + len) * sizeof(CHAR) >= 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 < len; i++)
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s1[i] = 32 + 23 * i % (max_char - 32);
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s1[len] = 0;
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printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR));
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s2, s1, len);
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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 ("%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 (i = 0; i < 16; ++i)
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{
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do_test (0, 0, i, SMALL_CHAR);
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do_test (0, 0, i, BIG_CHAR);
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do_test (0, i, i, SMALL_CHAR);
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do_test (i, 0, i, BIG_CHAR);
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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, SMALL_CHAR);
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do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
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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, SMALL_CHAR);
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do_test (2 * i, i, 8 << i, BIG_CHAR);
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do_test (i, i, 8 << i, SMALL_CHAR);
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do_test (i, i, 8 << i, BIG_CHAR);
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}
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for (i = 16; i <= 512; i+=4)
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{
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do_test (0, 4, i, SMALL_CHAR);
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do_test (4, 0, i, BIG_CHAR);
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do_test (4, 4, i, SMALL_CHAR);
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do_test (2, 2, i, BIG_CHAR);
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do_test (2, 6, i, SMALL_CHAR);
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do_test (6, 2, i, BIG_CHAR);
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do_test (1, 7, i, SMALL_CHAR);
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do_test (7, 1, i, BIG_CHAR);
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do_test (3, 4, i, SMALL_CHAR);
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do_test (4, 3, i, BIG_CHAR);
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do_test (5, 7, i, SMALL_CHAR);
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do_test (7, 5, i, SMALL_CHAR);
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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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