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I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
170 lines
4.2 KiB
C
170 lines
4.2 KiB
C
/* Measure strncpy functions.
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Copyright (C) 2013-2021 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 BIG_CHAR MAX_CHAR
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#ifdef WIDE
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# define SMALL_CHAR 1273
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#else
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# define SMALL_CHAR 127
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#endif /* !WIDE */
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#ifndef STRNCPY_RESULT
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# define STRNCPY_RESULT(dst, len, n) dst
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# define TEST_MAIN
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# ifndef WIDE
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# define TEST_NAME "strncpy"
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# else
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# define TEST_NAME "wcsncpy"
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# define generic_strncpy generic_wcsncpy
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# endif /* WIDE */
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# include "bench-string.h"
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CHAR *
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generic_strncpy (CHAR *dst, const CHAR *src, size_t n)
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{
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size_t nc = STRNLEN (src, n);
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if (nc != n)
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MEMSET (dst + nc, 0, n - nc);
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return MEMCPY (dst, src, nc);
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}
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IMPL (STRNCPY, 1)
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IMPL (generic_strncpy, 0)
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#endif /* !STRNCPY_RESULT */
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typedef CHAR *(*proto_t) (CHAR *, const CHAR *, size_t);
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static void
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do_one_test (impl_t *impl, CHAR *dst, const CHAR *src, size_t len, size_t n)
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{
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size_t i, iters = INNER_LOOP_ITERS_LARGE * (4 / CHARBYTES);
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timing_t start, stop, cur;
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if (CALL (impl, dst, src, n) != STRNCPY_RESULT (dst, len, n))
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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, n), dst);
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ret = 1;
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return;
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}
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if (memcmp (dst, src, (len > n ? n : len) * sizeof (CHAR)) != 0)
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{
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error (0, 0, "Wrong result in function %s", impl->name);
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ret = 1;
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return;
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}
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if (n > len)
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{
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size_t i;
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for (i = len; i < n; ++i)
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if (dst [i] != '\0')
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{
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error (0, 0, "Wrong result in function %s", impl->name);
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ret = 1;
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return;
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}
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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, n);
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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, size_t n, 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 wcsncpy: 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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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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for (i = len + 1; (i + align1) * sizeof (CHAR) < page_size && i < len + 64;
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++i)
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s1[i] = 32 + 32 * i % (max_char - 32);
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printf ("Length %4zd, n %4zd, alignment %2zd/%2zd:", len, n, align1, align2);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, s2, s1, len, n);
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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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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 = 1; i < 8; ++i)
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{
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do_test (i, i, 16, 16, SMALL_CHAR);
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do_test (i, i, 16, 16, BIG_CHAR);
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do_test (i, 2 * i, 16, 16, SMALL_CHAR);
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do_test (2 * i, i, 16, 16, BIG_CHAR);
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do_test (8 - i, 2 * i, 1 << i, 2 << i, SMALL_CHAR);
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do_test (2 * i, 8 - i, 2 << i, 1 << i, SMALL_CHAR);
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do_test (8 - i, 2 * i, 1 << i, 2 << i, BIG_CHAR);
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do_test (2 * i, 8 - i, 2 << i, 1 << 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, 4 << i, 8 << i, SMALL_CHAR);
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do_test (0, 0, 16 << i, 8 << i, SMALL_CHAR);
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do_test (8 - i, 2 * i, 4 << i, 8 << i, SMALL_CHAR);
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do_test (8 - i, 2 * i, 16 << i, 8 << i, SMALL_CHAR);
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}
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return ret;
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}
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#include <support/test-driver.c>
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