mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 15:30:07 +00:00
4bd660be40
At function exit, AVX optimized string/memory functions have VZEROUPPER which triggers RTM abort. When such functions are called inside a transactionally executing RTM region, RTM abort causes severe performance degradation. Add tests to verify that string/memory functions won't cause RTM abort in RTM region.
54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
/* Test case for strcpy inside a transactionally executing RTM region.
|
|
Copyright (C) 2021 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <tst-string-rtm.h>
|
|
|
|
#define LOOP 3000
|
|
#define STRING_SIZE 1024
|
|
char string1[STRING_SIZE];
|
|
char string2[STRING_SIZE];
|
|
|
|
__attribute__ ((noinline, noclone))
|
|
static int
|
|
prepare (void)
|
|
{
|
|
memset (string1, 'a', STRING_SIZE - 1);
|
|
if (strcpy (string2, string1) == string2
|
|
&& strcmp (string2, string1) == 0)
|
|
return EXIT_SUCCESS;
|
|
else
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
__attribute__ ((noinline, noclone))
|
|
static int
|
|
function (void)
|
|
{
|
|
if (strcpy (string2, string1) == string2
|
|
&& strcmp (string2, string1) == 0)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
return do_test_1 ("strcpy", LOOP, prepare, function);
|
|
}
|