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