136 lines
5.9 KiB
C++
136 lines
5.9 KiB
C++
/*
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* Copyright (c) 2015, 2019, 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 "gc/z/zAddress.inline.hpp"
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#include "gc/z/zGlobals.hpp"
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#include "unittest.hpp"
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class ZAddressTest : public ::testing::Test {
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protected:
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static void is_good_bit(uintptr_t bit_mask) {
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// Setup
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ZAddress::initialize();
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ZAddress::set_good_mask(bit_mask);
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// Test that a pointer with only the given bit is considered good.
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataMarked0), (bit_mask == ZAddressMetadataMarked0));
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataMarked1), (bit_mask == ZAddressMetadataMarked1));
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataRemapped), (bit_mask == ZAddressMetadataRemapped));
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// Test that a pointer with the given bit and some extra bits is considered good.
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataMarked0 | 0x8),(bit_mask == ZAddressMetadataMarked0));
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataMarked1 | 0x8), (bit_mask == ZAddressMetadataMarked1));
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EXPECT_EQ(ZAddress::is_good(ZAddressMetadataRemapped | 0x8), (bit_mask == ZAddressMetadataRemapped));
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// Test that null is not considered good.
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EXPECT_FALSE(ZAddress::is_good(0));
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}
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static void is_good_or_null_bit(uintptr_t bit_mask) {
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// Setup
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ZAddress::initialize();
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ZAddress::set_good_mask(bit_mask);
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// Test that a pointer with only the given bit is considered good.
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataMarked0), (bit_mask == ZAddressMetadataMarked0));
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataMarked1), (bit_mask == ZAddressMetadataMarked1));
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataRemapped), (bit_mask == ZAddressMetadataRemapped));
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// Test that a pointer with the given bit and some extra bits is considered good.
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataMarked0 | 0x8), (bit_mask == ZAddressMetadataMarked0));
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataMarked1 | 0x8), (bit_mask == ZAddressMetadataMarked1));
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EXPECT_EQ(ZAddress::is_good_or_null(ZAddressMetadataRemapped | 0x8), (bit_mask == ZAddressMetadataRemapped));
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// Test that null is considered good_or_null.
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EXPECT_TRUE(ZAddress::is_good_or_null(0));
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}
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static void finalizable() {
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// Setup
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ZAddress::initialize();
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ZAddress::flip_to_marked();
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// Test that a normal good pointer is good and weak good, but not finalizable
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const uintptr_t addr1 = ZAddress::good(1);
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EXPECT_FALSE(ZAddress::is_finalizable(addr1));
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EXPECT_TRUE(ZAddress::is_marked(addr1));
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EXPECT_FALSE(ZAddress::is_remapped(addr1));
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EXPECT_TRUE(ZAddress::is_weak_good(addr1));
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EXPECT_TRUE(ZAddress::is_weak_good_or_null(addr1));
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EXPECT_TRUE(ZAddress::is_good(addr1));
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EXPECT_TRUE(ZAddress::is_good_or_null(addr1));
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// Test that a finalizable good pointer is finalizable and weak good, but not good
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const uintptr_t addr2 = ZAddress::finalizable_good(1);
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EXPECT_TRUE(ZAddress::is_finalizable(addr2));
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EXPECT_TRUE(ZAddress::is_marked(addr2));
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EXPECT_FALSE(ZAddress::is_remapped(addr2));
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EXPECT_TRUE(ZAddress::is_weak_good(addr2));
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EXPECT_TRUE(ZAddress::is_weak_good_or_null(addr2));
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EXPECT_FALSE(ZAddress::is_good(addr2));
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EXPECT_FALSE(ZAddress::is_good_or_null(addr2));
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// Flip to remapped and test that it's no longer weak good
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ZAddress::flip_to_remapped();
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EXPECT_TRUE(ZAddress::is_finalizable(addr2));
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EXPECT_TRUE(ZAddress::is_marked(addr2));
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EXPECT_FALSE(ZAddress::is_remapped(addr2));
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EXPECT_FALSE(ZAddress::is_weak_good(addr2));
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EXPECT_FALSE(ZAddress::is_weak_good_or_null(addr2));
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EXPECT_FALSE(ZAddress::is_good(addr2));
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EXPECT_FALSE(ZAddress::is_good_or_null(addr2));
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}
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};
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TEST_F(ZAddressTest, is_good) {
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is_good_bit(ZAddressMetadataMarked0);
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is_good_bit(ZAddressMetadataMarked1);
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is_good_bit(ZAddressMetadataRemapped);
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}
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TEST_F(ZAddressTest, is_good_or_null) {
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is_good_or_null_bit(ZAddressMetadataMarked0);
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is_good_or_null_bit(ZAddressMetadataMarked1);
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is_good_or_null_bit(ZAddressMetadataRemapped);
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}
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TEST_F(ZAddressTest, is_weak_good_or_null) {
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#define check_is_weak_good_or_null(value) \
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EXPECT_EQ(ZAddress::is_weak_good_or_null(value), \
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(ZAddress::is_good_or_null(value) || ZAddress::is_remapped(value))) \
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<< "is_good_or_null: " << ZAddress::is_good_or_null(value) \
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<< " is_remaped: " << ZAddress::is_remapped(value) \
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<< " is_good_or_null_or_remapped: " << ZAddress::is_weak_good_or_null(value)
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check_is_weak_good_or_null((uintptr_t)NULL);
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check_is_weak_good_or_null(ZAddressMetadataMarked0);
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check_is_weak_good_or_null(ZAddressMetadataMarked1);
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check_is_weak_good_or_null(ZAddressMetadataRemapped);
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check_is_weak_good_or_null((uintptr_t)0x123);
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}
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TEST_F(ZAddressTest, finalizable) {
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finalizable();
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}
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