80 lines
3.0 KiB
C++
80 lines
3.0 KiB
C++
/*
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* Copyright (c) 2024, Red Hat, Inc. All rights reserved.
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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#include "precompiled.hpp"
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#include "oops/compressedKlass.inline.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "unittest.hpp"
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TEST_VM(CompressedKlass, basics) {
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if (!UseCompressedClassPointers) {
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return;
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}
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ASSERT_LE((address)0, CompressedKlassPointers::base());
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ASSERT_LE(CompressedKlassPointers::base(), CompressedKlassPointers::klass_range_start());
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ASSERT_LT(CompressedKlassPointers::klass_range_start(), CompressedKlassPointers::klass_range_end());
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ASSERT_LE(CompressedKlassPointers::klass_range_end(), CompressedKlassPointers::encoding_range_end());
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switch (CompressedKlassPointers::shift()) {
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case 0:
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ASSERT_EQ(CompressedKlassPointers::encoding_range_end() - CompressedKlassPointers::base(), (ptrdiff_t)(4 * G));
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break;
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case 3:
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ASSERT_EQ(CompressedKlassPointers::encoding_range_end() - CompressedKlassPointers::base(), (ptrdiff_t)(32 * G));
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break;
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default:
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ShouldNotReachHere();
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}
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}
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TEST_VM(CompressedKlass, test_too_low_address) {
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if (!UseCompressedClassPointers) {
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return;
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}
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address really_low = (address) 32;
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ASSERT_FALSE(CompressedKlassPointers::is_encodable(really_low));
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address low = CompressedKlassPointers::klass_range_start() - 1;
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ASSERT_FALSE(CompressedKlassPointers::is_encodable(low));
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}
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TEST_VM(CompressedKlass, test_too_high_address) {
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if (!UseCompressedClassPointers) {
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return;
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}
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address really_high = (address) UINTPTR_MAX;
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ASSERT_FALSE(CompressedKlassPointers::is_encodable(really_high));
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address high = CompressedKlassPointers::klass_range_end();
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ASSERT_FALSE(CompressedKlassPointers::is_encodable(high));
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}
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TEST_VM(CompressedKlass, test_good_address) {
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if (!UseCompressedClassPointers) {
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return;
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}
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address addr = CompressedKlassPointers::klass_range_start();
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ASSERT_TRUE(CompressedKlassPointers::is_encodable(addr));
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addr = CompressedKlassPointers::klass_range_end() - 1;
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ASSERT_TRUE(CompressedKlassPointers::is_encodable(addr));
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}
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