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/*
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* Copyright (c) 2015, 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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/*
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* @test
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* @bug 8136421
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* @requires (os.simpleArch == "x64" | os.simpleArch == "sparcv9") & os.arch != "aarch64"
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* @library / /testlibrary
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* @compile ../common/CompilerToVMHelper.java
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* @build compiler.jvmci.compilerToVM.InitializeConfigurationTest
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* @run main ClassFileInstaller
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* jdk.vm.ci.hotspot.CompilerToVMHelper
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* @run main/othervm -Xbootclasspath/a:.
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* -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI
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* compiler.jvmci.compilerToVM.InitializeConfigurationTest
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*/
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package compiler.jvmci.compilerToVM;
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import java.util.ArrayList;
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import java.util.Iterator;
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import java.util.List;
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import java.util.NoSuchElementException;
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import java.util.Objects;
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import java.util.function.Consumer;
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import jdk.vm.ci.hotspot.CompilerToVMHelper;
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import jdk.vm.ci.hotspot.HotSpotJVMCIRuntime;
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import jdk.test.lib.Asserts;
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import jdk.test.lib.Utils;
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import sun.misc.Unsafe;
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public class InitializeConfigurationTest {
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private static final Unsafe UNSAFE = Utils.getUnsafe();
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public static void main(String args[]) {
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new InitializeConfigurationTest().runTest(generateTestCases());
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}
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private static List<TestCase> generateTestCases() {
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List<TestCase> result = new ArrayList<>();
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result.add(new TestCase("CodeCache", "_high_bound", "address",
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InitializeConfigurationTest::verifyLongIsNotZero));
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result.add(new TestCase("StubRoutines", "_jint_arraycopy", "address",
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InitializeConfigurationTest::verifyLongIsNotZero));
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return result;
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}
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private static void verifyLongIsNotZero(Object o) {
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Asserts.assertNotNull(o, "Got null value");
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Asserts.assertEQ(o.getClass(), Long.class, "Unexpected value type");
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Asserts.assertNE(o, 0L, "Got null address");
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}
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private void runTest(List<TestCase> tcases) {
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VMStructDataReader reader = new VMStructDataReader(
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CompilerToVMHelper.initializeConfiguration(HotSpotJVMCIRuntime.runtime().getConfig()));
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while (reader.hasNext()) {
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VMFieldData data = reader.next();
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for (TestCase tcase : tcases) {
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tcase.check(data);
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}
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}
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// now check if all passed
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for (TestCase tcase: tcases) {
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Asserts.assertTrue(tcase.isFound(), "Case failed: " + tcase);
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}
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}
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private static class VMStructDataReader implements Iterator<VMFieldData> {
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// see jvmciCompilerToVM:105 static uintptr_t ciHotSpotVMData[28];
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private static final int HOTSPOT_VM_DATA_INDEX_COUNT = 28;
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private final long addresses[];
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private final long vmStructsBase;
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private final long entityNameFieldOffset;
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private final long nameFieldOffset;
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private final long typeStringFieldOffset;
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private final long addressOffset;
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private final long entrySize;
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private long nextElementAddress;
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private VMFieldData nextElement;
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public VMStructDataReader(long gHotSpotVMData) {
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Asserts.assertNE(gHotSpotVMData, 0L, "Got null base address");
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addresses = new long[HOTSPOT_VM_DATA_INDEX_COUNT];
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for (int i = 0; i < HOTSPOT_VM_DATA_INDEX_COUNT; i++) {
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addresses[i] = UNSAFE.getAddress(
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gHotSpotVMData + Unsafe.ADDRESS_SIZE * i);
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}
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vmStructsBase = addresses[0];
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entityNameFieldOffset = addresses[1];
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nameFieldOffset = addresses[2];
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typeStringFieldOffset = addresses[3];
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addressOffset = addresses[6];
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entrySize = addresses[7];
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nextElementAddress = vmStructsBase;
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nextElement = read();
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}
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@Override
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public boolean hasNext() {
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return nextElement != null;
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}
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@Override
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public VMFieldData next() {
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if (nextElement == null) {
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throw new NoSuchElementException("Next element is null");
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}
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VMFieldData toReturn = nextElement;
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nextElementAddress += entrySize;
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nextElement = read();
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return toReturn;
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}
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private VMFieldData read() {
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String entityFieldName = readCString(
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UNSAFE.getAddress(nextElementAddress + nameFieldOffset));
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if (entityFieldName == null) {
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return null;
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}
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String fieldType = readCString(UNSAFE.getAddress(
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nextElementAddress + typeStringFieldOffset));
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String entityName = readCString(UNSAFE.getAddress(
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nextElementAddress + entityNameFieldOffset));
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Object value;
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if ("address".equals(fieldType)) {
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long address = UNSAFE.getAddress(
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nextElementAddress + addressOffset);
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value = address;
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} else {
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// non-address cases are not supported
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value = null;
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}
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return new VMFieldData(entityName, entityFieldName, fieldType,
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value);
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}
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private static String readCString(long address) {
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if (address == 0) {
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return null;
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}
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StringBuilder sb = new StringBuilder();
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for (int i = 0;; i++) {
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char c = (char) UNSAFE.getByte(address + i);
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if (c == 0) {
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break;
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}
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sb.append(c);
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}
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return sb.toString();
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}
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}
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private static class VMFieldData {
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public final String entityFieldName;
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public final String entityName;
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public final String fieldType;
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public final Object value;
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private VMFieldData(String entityName, String entityFieldName,
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String fieldType, Object value) {
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this.entityName = entityName;
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this.entityFieldName = entityFieldName;
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this.fieldType = fieldType;
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this.value = value;
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}
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}
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private static class TestCase {
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public final String entityName;
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public final String fieldType;
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public final String entityFieldName;
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public final Consumer consumer;
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private boolean found;
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public TestCase(String entityName, String entityFieldName,
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String fieldType, Consumer predicate) {
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Objects.requireNonNull(entityName, "Got null entityName");
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Objects.requireNonNull(entityFieldName, "Got null entityFieldName");
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Objects.requireNonNull(fieldType, "Got null type");
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if (!"address".equals(fieldType)) {
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throw new Error("TESTBUG: unsupported testcase with fieldType="
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+ fieldType);
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}
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this.entityName = entityName;
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this.fieldType = fieldType;
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this.entityFieldName = entityFieldName;
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this.consumer = predicate;
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this.found = false;
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}
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public void check(VMFieldData data) {
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if (entityFieldName.equals(data.entityFieldName)
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&& entityName.equals(data.entityName)
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&& fieldType.equals(data.fieldType)) {
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Asserts.assertFalse(found, "Found 2 entries of " + this);
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found = true;
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consumer.accept(data.value);
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}
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}
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@Override
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public String toString() {
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return "CASE: entityName=" + entityName + " entityFieldName="
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+ entityFieldName + " fieldType=" + fieldType;
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}
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public boolean isFound() {
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return found;
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}
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}
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}
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