44ec501a41
Co-authored-by: Sandhya Viswanathan <sviswanathan@openjdk.org> Co-authored-by: Martin Doerr <mdoerr@openjdk.org> Co-authored-by: Hamlin Li <mli@openjdk.org> Co-authored-by: Thomas Stuefe <stuefe@openjdk.org> Co-authored-by: Amit Kumar <amitkumar@openjdk.org> Co-authored-by: Stefan Karlsson <stefank@openjdk.org> Co-authored-by: Coleen Phillimore <coleenp@openjdk.org> Co-authored-by: Axel Boldt-Christmas <aboldtch@openjdk.org> Reviewed-by: coleenp, stefank, stuefe, phh, ihse, lmesnik, tschatzl, matsaave, rcastanedalo, vpaprotski, yzheng, egahlin
111 lines
4.4 KiB
C++
111 lines
4.4 KiB
C++
/*
|
|
* Copyright (c) 2024, Red Hat, Inc. All rights reserved.
|
|
* Copyright (c) 2024, Oracle and/or its affiliates. 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 "oops/compressedKlass.inline.hpp"
|
|
#include "utilities/globalDefinitions.hpp"
|
|
|
|
#include "unittest.hpp"
|
|
|
|
TEST_VM(CompressedKlass, basics) {
|
|
if (!UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
ASSERT_LE((address)0, CompressedKlassPointers::base());
|
|
ASSERT_LE(CompressedKlassPointers::base(), CompressedKlassPointers::klass_range_start());
|
|
ASSERT_LT(CompressedKlassPointers::klass_range_start(), CompressedKlassPointers::klass_range_end());
|
|
ASSERT_LE(CompressedKlassPointers::klass_range_end(), CompressedKlassPointers::encoding_range_end());
|
|
|
|
switch (CompressedKlassPointers::shift()) {
|
|
case 0:
|
|
ASSERT_EQ(CompressedKlassPointers::encoding_range_end() - CompressedKlassPointers::base(), (ptrdiff_t)(4 * G));
|
|
break;
|
|
case 3:
|
|
ASSERT_EQ(CompressedKlassPointers::encoding_range_end() - CompressedKlassPointers::base(), (ptrdiff_t)(32 * G));
|
|
break;
|
|
default:
|
|
const size_t expected_size = nth_bit(CompressedKlassPointers::narrow_klass_pointer_bits() + CompressedKlassPointers::shift());
|
|
ASSERT_EQ(CompressedKlassPointers::encoding_range_end() - CompressedKlassPointers::base(), (ptrdiff_t)expected_size);
|
|
}
|
|
}
|
|
|
|
TEST_VM(CompressedKlass, ccp_off) {
|
|
if (UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
ASSERT_EQ(CompressedKlassPointers::klass_range_start(), (address)nullptr);
|
|
ASSERT_EQ(CompressedKlassPointers::klass_range_end(), (address)nullptr);
|
|
// We should be able to call CompressedKlassPointers::is_encodable, and it should
|
|
// always return false
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable((address)0x12345));
|
|
}
|
|
|
|
|
|
TEST_VM(CompressedKlass, test_too_low_address) {
|
|
if (!UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
address really_low = (address) 32;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(really_low));
|
|
address low = CompressedKlassPointers::klass_range_start() - 1;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(low));
|
|
}
|
|
|
|
TEST_VM(CompressedKlass, test_too_high_address) {
|
|
if (!UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
address really_high = (address) UINTPTR_MAX;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(really_high));
|
|
address high = CompressedKlassPointers::klass_range_end();
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(high));
|
|
}
|
|
|
|
TEST_VM(CompressedKlass, test_unaligned_address) {
|
|
if (!UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
const size_t alignment = CompressedKlassPointers::klass_alignment_in_bytes();
|
|
address addr = CompressedKlassPointers::klass_range_start() + alignment - 1;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(addr));
|
|
// Try word-aligned, but not sufficiently aligned
|
|
if (alignment > BytesPerWord) {
|
|
addr = CompressedKlassPointers::klass_range_start() + BytesPerWord;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(addr));
|
|
}
|
|
addr = CompressedKlassPointers::klass_range_end() - 1;
|
|
ASSERT_FALSE(CompressedKlassPointers::is_encodable(addr));
|
|
}
|
|
|
|
TEST_VM(CompressedKlass, test_good_address) {
|
|
if (!UseCompressedClassPointers) {
|
|
return;
|
|
}
|
|
const size_t alignment = CompressedKlassPointers::klass_alignment_in_bytes();
|
|
address addr = CompressedKlassPointers::klass_range_start();
|
|
ASSERT_TRUE(CompressedKlassPointers::is_encodable(addr));
|
|
addr = CompressedKlassPointers::klass_range_end() - alignment;
|
|
ASSERT_TRUE(CompressedKlassPointers::is_encodable(addr));
|
|
}
|