67 lines
2.3 KiB
C++
67 lines
2.3 KiB
C++
/*
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* Copyright (c) 2022, 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 "memory/allocation.hpp"
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#include "utilities/objectBitSet.inline.hpp"
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#include "unittest.hpp"
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TEST_VM(ObjectBitSet, empty) {
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ObjectBitSet<mtTracing> obs;
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oopDesc obj1;
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ASSERT_FALSE(obs.is_marked(&obj1));
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}
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// NOTE: This is a little weird. nullptr is not treated any special: ObjectBitSet will happily
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// allocate a fragement for the memory range starting at 0 and mark the first bit when passing nullptr.
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// In the absense of any error handling, I am not sure what would possibly be a reasonable better
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// way to do it, though.
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TEST_VM(ObjectBitSet, null) {
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ObjectBitSet<mtTracing> obs;
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ASSERT_FALSE(obs.is_marked((oop)nullptr));
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obs.mark_obj((oop) nullptr);
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ASSERT_TRUE(obs.is_marked((oop)nullptr));
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}
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TEST_VM(ObjectBitSet, mark_single) {
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ObjectBitSet<mtTracing> obs;
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oopDesc obj1;
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ASSERT_FALSE(obs.is_marked(&obj1));
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obs.mark_obj(&obj1);
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ASSERT_TRUE(obs.is_marked(&obj1));
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}
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TEST_VM(ObjectBitSet, mark_multi) {
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ObjectBitSet<mtTracing> obs;
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oopDesc obj1;
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oopDesc obj2;
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ASSERT_FALSE(obs.is_marked(&obj1));
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ASSERT_FALSE(obs.is_marked(&obj2));
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obs.mark_obj(&obj1);
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ASSERT_TRUE(obs.is_marked(&obj1));
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ASSERT_FALSE(obs.is_marked(&obj2));
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obs.mark_obj(&obj2);
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ASSERT_TRUE(obs.is_marked(&obj1));
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ASSERT_TRUE(obs.is_marked(&obj2));
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}
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