| /* |
| * Copyright (c) 2016, 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. |
| * |
| */ |
| |
| package gc.g1.humongousObjects.objectGraphTest; |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import sun.hotspot.WhiteBox; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.lang.ref.Reference; |
| import java.lang.ref.ReferenceQueue; |
| import java.lang.ref.SoftReference; |
| import java.lang.ref.WeakReference; |
| import java.nio.file.Files; |
| import java.util.Map; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.function.BiConsumer; |
| import java.util.function.Consumer; |
| import java.util.function.Predicate; |
| import java.util.stream.Collectors; |
| |
| |
| /** |
| * @test TestObjectGraphAfterGC |
| * @summary Checks that objects' graph behave as expected after gc |
| * @requires vm.gc.G1 |
| * @requires vm.opt.ExplicitGCInvokesConcurrent != true |
| * @library /test/lib / |
| * @modules java.management java.base/jdk.internal.misc |
| * @build sun.hotspot.WhiteBox |
| * @ignore 8156755 |
| * |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * sun.hotspot.WhiteBox$WhiteBoxPermission |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:+UnlockExperimentalVMOptions -XX:MaxGCPauseMillis=30000 -XX:G1MixedGCLiveThresholdPercent=100 -XX:G1HeapWastePercent=0 |
| * -XX:G1HeapRegionSize=1M -Xlog:gc=info:file=TestObjectGraphAfterGC_MIXED_GC.gc.log -XX:MaxTenuringThreshold=1 |
| * -XX:G1MixedGCCountTarget=1 -XX:G1OldCSetRegionThresholdPercent=100 -XX:SurvivorRatio=1 -XX:InitiatingHeapOccupancyPercent=0 |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC MIXED_GC |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:G1HeapRegionSize=1M -Xlog:gc*=debug:file=TestObjectGraphAfterGC_YOUNG_GC.gc.log |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC YOUNG_GC |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:G1HeapRegionSize=1M -Xlog:gc=info:file=TestObjectGraphAfterGC_FULL_GC.gc.log |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC FULL_GC |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:G1HeapRegionSize=1M -Xlog:gc=info:file=TestObjectGraphAfterGC_FULL_GC_MEMORY_PRESSURE.gc.log |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC FULL_GC_MEMORY_PRESSURE |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:G1HeapRegionSize=1M -Xlog:gc=info:file=TestObjectGraphAfterGC_CMC.gc.log -XX:MaxTenuringThreshold=16 |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC CMC |
| * |
| * @run main/othervm -Xms200M -XX:+UseG1GC -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -Xbootclasspath/a:. |
| * -XX:G1HeapRegionSize=1M -Xlog:gc=info:file=TestObjectGraphAfterGC_CMC_NO_SURV_ROOTS.gc.log -XX:MaxTenuringThreshold=1 |
| * gc.g1.humongousObjects.objectGraphTest.TestObjectGraphAfterGC CMC_NO_SURV_ROOTS |
| * |
| */ |
| |
| /** |
| * Checks that objects' graph behave as expected after gc |
| * See README file for detailed info on test's logic |
| */ |
| public class TestObjectGraphAfterGC { |
| |
| private static final int simpleAllocationSize = 1024; |
| |
| /** |
| * Entry point |
| * |
| * @param args - first argument - gc name |
| */ |
| public static void main(String[] args) { |
| |
| if (args.length < 1) { |
| throw new Error("Expected gc name wasn't provided as command line argument"); |
| } |
| |
| GC gcType = GC.valueOf(args[0].toUpperCase()); |
| |
| System.out.println("Testing " + gcType.name()); |
| |
| TestcaseData.getPregeneratedTestcases().stream().forEach(testcase -> { |
| System.out.println("Testcase: " + testcase); |
| |
| try { |
| TestObjectGraphAfterGC.doTesting(testcase, gcType.get(), gcType.getChecker(), |
| gcType.getGcLogName(TestObjectGraphAfterGC.class.getSimpleName()), gcType.shouldContain(), |
| gcType.shouldNotContain()); |
| } catch (IOException e) { |
| throw new Error("Problems trying to find or open " + TestObjectGraphAfterGC.class.getSimpleName() |
| + ".gc.log", e); |
| } |
| System.out.println(" Passed"); |
| }); |
| } |
| |
| /** |
| * Implements testing with 3 methods - allocateObjectGraph, checkResults and checkGCLog |
| * |
| * @param testcaseData testcase in the following notation: |
| * H - humongous node |
| * S - non-humongous node |
| * s - external soft reference |
| * w - external weak reference |
| * Hs->Sw - 1st node is humongous, externally soft referenced and strong references to |
| * non-humongous node 2 which is externally weak referenced |
| * H->1 - humongous node connects to the first node of chain |
| * @param doGC method that initiates gc |
| * @param checker consumer that checks node's state after gc and throws Error if it's wrong |
| * @param gcLogName name of gc log |
| * @param shouldContain list of tokens that should be contained in gc log |
| * @param shouldNotContain list of tokens that should not be contained in gc log |
| * @throws IOException if there are some issues with gc log |
| */ |
| private static void doTesting(String testcaseData, Runnable doGC, Consumer<ReferenceInfo<Object[]>> checker, |
| String gcLogName, List<String> shouldContain, List<String> shouldNotContain) |
| throws IOException { |
| Set<ReferenceInfo<Object[]>> nodeData = allocateObjectGraph(testcaseData); |
| doGC.run(); |
| checkResults(nodeData, checker); |
| checkGCLog(gcLogName, shouldContain, shouldNotContain); |
| } |
| |
| /** |
| * Allocates a number of objects of humongous and regular size and links then with strong references. |
| * How many objects to create, their size and links between them is encoded in the given parameters. |
| * As the result an object graph will be created. |
| * For the testing purpose for each created object (a graph node) an extra ReferenceInfo object will be created. |
| * The ReferenceInfo instances will contain either weak or soft reference to the graph node. |
| * |
| * @param testcaseData testcase in the |
| * <p> |
| * H - humongous node |
| * S - non-humongous node |
| * s - external soft reference |
| * w - external weak reference |
| * Hs->Sw - 1st node is humongous, externally soft referenced and strong references to |
| * non-humongous node 2 which is externally weak referenced |
| * H->1 - humongous node connects to the first node of chain |
| * @return set of ReferenceInfo objects containing weak/soft reference to the graph node and other data on how |
| * objects should behave after gc |
| */ |
| private static Set<ReferenceInfo<Object[]>> allocateObjectGraph(String testcaseData) { |
| Map<Object[], String> nodeIds = new HashMap<>(); |
| Set<Object[]> humongousNodes = new HashSet<>(); |
| Set<Object[]> externalSoftReferenced = new HashSet<>(); |
| Set<Object[]> externalWeakReferenced = new HashSet<>(); |
| |
| Map<Predicate<TestcaseData.FinalParsedNode>, BiConsumer<TestcaseData.FinalParsedNode, Object[][]>> visitors |
| = new HashMap<>(); |
| |
| visitors.put((parsedNode -> true), |
| (parsedNode, objects) -> nodeIds.put(objects[Integer.valueOf(parsedNode.id)], parsedNode.id) |
| ); |
| |
| visitors.put((parsedNode -> parsedNode.isHumongous), |
| (parsedNode, objects) -> humongousNodes.add(objects[Integer.valueOf(parsedNode.id)]) |
| ); |
| |
| visitors.put(parsedNode -> parsedNode.getReferencesTypes().stream(). |
| anyMatch(referenceType -> referenceType == ObjectGraph.ReferenceType.SOFT), |
| (parsedNode, objects) -> externalSoftReferenced.add(objects[Integer.valueOf(parsedNode.id)]) |
| ); |
| |
| visitors.put(parsedNode -> parsedNode.getReferencesTypes().stream(). |
| anyMatch(referenceType -> referenceType == ObjectGraph.ReferenceType.WEAK), |
| (parsedNode, objects) -> externalWeakReferenced.add(objects[Integer.valueOf(parsedNode.id)]) |
| ); |
| |
| List<TestcaseData.FinalParsedNode> internalParsedNodes = TestcaseData.parse(testcaseData); |
| |
| Object[] root = ObjectGraph.generateObjectNodes(internalParsedNodes, visitors, |
| WhiteBox.getWhiteBox().g1RegionSize(), simpleAllocationSize); |
| |
| ObjectGraph.propagateTransitiveProperty(humongousNodes, humongousNodes::add); |
| Set<Object[]> effectiveSoftReferenced = new HashSet<>(); |
| ObjectGraph.propagateTransitiveProperty(externalSoftReferenced, effectiveSoftReferenced::add); |
| |
| // Create external references |
| ReferenceQueue<Object[]> referenceQueue = new ReferenceQueue<>(); |
| Set<Reference<Object[]>> externalRefs = new HashSet<>(); |
| |
| externalWeakReferenced.stream() |
| .forEach(objects -> externalRefs.add(new WeakReference<>(objects, referenceQueue))); |
| externalSoftReferenced.stream() |
| .forEach(objects -> externalRefs.add(new SoftReference<>(objects, referenceQueue))); |
| |
| return externalRefs.stream() |
| .map(ref -> new ReferenceInfo<>(ref, testcaseData, nodeIds.get(ref.get()), |
| effectiveSoftReferenced.contains(ref.get()), humongousNodes.contains(ref.get()))) |
| .collect(Collectors.toSet()); |
| |
| } |
| |
| /** |
| * Checks that object' state after gc is as expected |
| * |
| * @param nodeData array with information about nodes |
| * @param checker consumer that checks node's state after gc and throws Error if it's wrong |
| */ |
| private static void checkResults(Set<ReferenceInfo<Object[]>> nodeData, Consumer<ReferenceInfo<Object[]>> checker) { |
| nodeData.stream().forEach(checker::accept); |
| } |
| |
| /** |
| * Checks that gc log contains what we expected and does not contain what we didn't expect |
| * |
| * @param gcLogName gc log name |
| * @param shouldContain list of tokens that should be contained in gc log |
| * @param shouldNotContain list of tokens that should not be contained in gc log |
| * @throws IOException if there are some issues with gc log |
| */ |
| private static void checkGCLog(String gcLogName, List<String> shouldContain, List<String> shouldNotContain) |
| throws IOException { |
| |
| if (gcLogName == null) { |
| return; |
| } |
| String gcLog = new String(Files.readAllBytes(new File(gcLogName).toPath())); |
| |
| OutputAnalyzer outputAnalyzer = new OutputAnalyzer(gcLog, ""); |
| |
| shouldContain.stream().forEach(outputAnalyzer::shouldContain); |
| shouldNotContain.stream().forEach(outputAnalyzer::shouldNotContain); |
| } |
| |
| } |