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/*
* Copyright (c) 2015, 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 "gc/x/xAddress.inline.hpp"
#include "gc/x/xGlobals.hpp"
#include "unittest.hpp"
class XAddressTest : public ::testing::Test {
protected:
static void is_good_bit(uintptr_t bit_mask) {
// Setup
XAddress::initialize();
XAddress::set_good_mask(bit_mask);
// Test that a pointer with only the given bit is considered good.
EXPECT_EQ(XAddress::is_good(XAddressMetadataMarked0), (bit_mask == XAddressMetadataMarked0));
EXPECT_EQ(XAddress::is_good(XAddressMetadataMarked1), (bit_mask == XAddressMetadataMarked1));
EXPECT_EQ(XAddress::is_good(XAddressMetadataRemapped), (bit_mask == XAddressMetadataRemapped));
// Test that a pointer with the given bit and some extra bits is considered good.
EXPECT_EQ(XAddress::is_good(XAddressMetadataMarked0 | 0x8),(bit_mask == XAddressMetadataMarked0));
EXPECT_EQ(XAddress::is_good(XAddressMetadataMarked1 | 0x8), (bit_mask == XAddressMetadataMarked1));
EXPECT_EQ(XAddress::is_good(XAddressMetadataRemapped | 0x8), (bit_mask == XAddressMetadataRemapped));
// Test that null is not considered good.
EXPECT_FALSE(XAddress::is_good(0));
}
static void is_good_or_null_bit(uintptr_t bit_mask) {
// Setup
XAddress::initialize();
XAddress::set_good_mask(bit_mask);
// Test that a pointer with only the given bit is considered good.
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataMarked0), (bit_mask == XAddressMetadataMarked0));
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataMarked1), (bit_mask == XAddressMetadataMarked1));
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataRemapped), (bit_mask == XAddressMetadataRemapped));
// Test that a pointer with the given bit and some extra bits is considered good.
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataMarked0 | 0x8), (bit_mask == XAddressMetadataMarked0));
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataMarked1 | 0x8), (bit_mask == XAddressMetadataMarked1));
EXPECT_EQ(XAddress::is_good_or_null(XAddressMetadataRemapped | 0x8), (bit_mask == XAddressMetadataRemapped));
// Test that null is considered good_or_null.
EXPECT_TRUE(XAddress::is_good_or_null(0));
}
static void finalizable() {
// Setup
XAddress::initialize();
XAddress::flip_to_marked();
// Test that a normal good pointer is good and weak good, but not finalizable
const uintptr_t addr1 = XAddress::good(1);
EXPECT_FALSE(XAddress::is_finalizable(addr1));
EXPECT_TRUE(XAddress::is_marked(addr1));
EXPECT_FALSE(XAddress::is_remapped(addr1));
EXPECT_TRUE(XAddress::is_weak_good(addr1));
EXPECT_TRUE(XAddress::is_weak_good_or_null(addr1));
EXPECT_TRUE(XAddress::is_good(addr1));
EXPECT_TRUE(XAddress::is_good_or_null(addr1));
// Test that a finalizable good pointer is finalizable and weak good, but not good
const uintptr_t addr2 = XAddress::finalizable_good(1);
EXPECT_TRUE(XAddress::is_finalizable(addr2));
EXPECT_TRUE(XAddress::is_marked(addr2));
EXPECT_FALSE(XAddress::is_remapped(addr2));
EXPECT_TRUE(XAddress::is_weak_good(addr2));
EXPECT_TRUE(XAddress::is_weak_good_or_null(addr2));
EXPECT_FALSE(XAddress::is_good(addr2));
EXPECT_FALSE(XAddress::is_good_or_null(addr2));
// Flip to remapped and test that it's no longer weak good
XAddress::flip_to_remapped();
EXPECT_TRUE(XAddress::is_finalizable(addr2));
EXPECT_TRUE(XAddress::is_marked(addr2));
EXPECT_FALSE(XAddress::is_remapped(addr2));
EXPECT_FALSE(XAddress::is_weak_good(addr2));
EXPECT_FALSE(XAddress::is_weak_good_or_null(addr2));
EXPECT_FALSE(XAddress::is_good(addr2));
EXPECT_FALSE(XAddress::is_good_or_null(addr2));
}
};
TEST_F(XAddressTest, is_good) {
is_good_bit(XAddressMetadataMarked0);
is_good_bit(XAddressMetadataMarked1);
is_good_bit(XAddressMetadataRemapped);
}
TEST_F(XAddressTest, is_good_or_null) {
is_good_or_null_bit(XAddressMetadataMarked0);
is_good_or_null_bit(XAddressMetadataMarked1);
is_good_or_null_bit(XAddressMetadataRemapped);
}
TEST_F(XAddressTest, is_weak_good_or_null) {
#define check_is_weak_good_or_null(value) \
EXPECT_EQ(XAddress::is_weak_good_or_null(value), \
(XAddress::is_good_or_null(value) || XAddress::is_remapped(value))) \
<< "is_good_or_null: " << XAddress::is_good_or_null(value) \
<< " is_remaped: " << XAddress::is_remapped(value) \
<< " is_good_or_null_or_remapped: " << XAddress::is_weak_good_or_null(value)
check_is_weak_good_or_null((uintptr_t)nullptr);
check_is_weak_good_or_null(XAddressMetadataMarked0);
check_is_weak_good_or_null(XAddressMetadataMarked1);
check_is_weak_good_or_null(XAddressMetadataRemapped);
check_is_weak_good_or_null((uintptr_t)0x123);
}
TEST_F(XAddressTest, finalizable) {
finalizable();
}
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