/*
* Copyright ( c ) 2021 , Oracle and / or its affiliates . All rights reserved .
* Copyright ( c ) 2021 SAP SE . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code 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 General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
#include "precompiled.hpp"
#include "runtime/os.hpp"
#include "utilities/align.hpp"
#include "utilities/ostream.hpp"
#include "testutils.hpp"
#include "unittest.hpp"
#include <string.h>
// Note: these could be made more suitable for covering large ranges (e.g. just mark one byte per page).
void GtestUtils::mark_range_with(void * p, size_t s, uint8_t mark) {
if (p != NULL && s > 0 ) {
::memset(p, mark, s);
}
}
bool GtestUtils::check_range(const void * p, size_t s, uint8_t expected) {
if (p == NULL || s == 0 ) {
return true ;
}
const char * first_wrong = NULL;
char * p2 = (char *)p;
const char * const end = p2 + s;
while (p2 < end) {
if (*p2 != (char )expected) {
first_wrong = p2;
break ;
}
p2 ++;
}
if (first_wrong != NULL) {
tty->print_cr("check_range [" PTR_FORMAT ".." PTR_FORMAT "), 0x%X, : wrong pattern around " PTR_FORMAT,
p2i(p), p2i(p) + s, expected, p2i(first_wrong));
// Note: We deliberately print the surroundings too without bounds check. Might be interesting,
// and os::print_hex_dump uses SafeFetch, so this is fine without bounds checks.
os::print_hex_dump(tty, (address)(align_down(p2, 0 x10) - 0 x10),
(address)(align_up(end, 0 x10) + 0 x10), 1 );
}
return first_wrong == NULL;
}
Messung V0.5 in Prozent C=97 H=97 G=96
[Dauer der Verarbeitung: 0.16 Sekunden, vorverarbeitet 2026-06-10]