73 lines
2.1 KiB
C++
73 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018, 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/oop.inline.hpp"
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#include "unittest.hpp"
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#include "utilities/globalDefinitions.hpp"
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static unsigned char memory[32];
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static oop fake_object() {
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return cast_to_oop(memory);
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}
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template <typename T>
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T* fake_field_addr() {
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return reinterpret_cast<T*>(&memory[16]);
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}
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TEST_VM(oopDesc, field_offset_oop) {
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// Fake object
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oop obj = fake_object();
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// Fake oop field
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oop* oop_field_addr = fake_field_addr<oop>();
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// Check offset
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size_t oop_offset = obj->field_offset(oop_field_addr);
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ASSERT_EQ(16u, oop_offset);
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}
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TEST_VM(oopDesc, field_offset_narrowOop) {
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// Fake object
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oop obj = fake_object();
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// Fake narrowOop field
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narrowOop* narrowOop_field_addr = fake_field_addr<narrowOop>();
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size_t narrowOop_offset = obj->field_offset(narrowOop_field_addr);
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ASSERT_EQ(16u, narrowOop_offset);
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}
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TEST_VM(oopDesc, field_offset_primitive) {
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// Fake object
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oop obj = fake_object();
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// Fake primitive field
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char* char_field_addr = fake_field_addr<char>();
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size_t char_offset = obj->field_offset(char_field_addr);
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ASSERT_EQ(16u, char_offset);
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}
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