hotspot/test/gc/g1/TestGCLogMessages.java
author sangheki
Thu, 10 Aug 2017 18:09:19 -0700
changeset 46795 623a5e42deb6
parent 46778 f504c6f2eea5
child 47106 bed18a111b90
permissions -rw-r--r--
8173335: Improve logging for j.l.ref.reference processing Summary: Add logs for each phases of references and stats for each worker threads Reviewed-by: tschatzl, shade
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/*
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 * Copyright (c) 2014, 2017, 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 TestGCLogMessages
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 * @bug 8035406 8027295 8035398 8019342 8027959 8048179 8027962 8069330 8076463 8150630 8160055 8177059 8166191
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 * @summary Ensure the output for a minor GC with G1
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 * includes the expected necessary messages.
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 * @key gc
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 * @requires vm.gc.G1
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 * @library /test/lib
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 * @modules java.base/jdk.internal.misc
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 *          java.management
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 * @build sun.hotspot.WhiteBox
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 * @run main ClassFileInstaller sun.hotspot.WhiteBox
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 * @run main TestGCLogMessages
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 */
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.Platform;
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public class TestGCLogMessages {
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    private enum Level {
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        OFF(""),
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        INFO("info"),
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        DEBUG("debug"),
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        TRACE("trace");
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        private String logName;
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        Level(String logName) {
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            this.logName = logName;
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        }
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        public boolean lessThan(Level other) {
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            return this.compareTo(other) < 0;
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        }
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        public String toString() {
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            return logName;
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        }
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    }
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    private class LogMessageWithLevel {
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        String message;
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        Level level;
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        public LogMessageWithLevel(String message, Level level) {
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            this.message = message;
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            this.level = level;
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        }
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        public boolean isAvailable() {
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            return true;
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        }
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    };
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    private class LogMessageWithLevelC2OrJVMCIOnly extends LogMessageWithLevel {
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        public LogMessageWithLevelC2OrJVMCIOnly(String message, Level level) {
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            super(message, level);
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        }
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        public boolean isAvailable() {
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            return Platform.isGraal() || Platform.isServer();
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        }
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    }
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    private LogMessageWithLevel allLogMessages[] = new LogMessageWithLevel[] {
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        new LogMessageWithLevel("Pre Evacuate Collection Set", Level.INFO),
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        new LogMessageWithLevel("Evacuate Collection Set", Level.INFO),
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        new LogMessageWithLevel("Post Evacuate Collection Set", Level.INFO),
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        new LogMessageWithLevel("Other", Level.INFO),
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        // Update RS
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        new LogMessageWithLevel("Update RS", Level.DEBUG),
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        new LogMessageWithLevel("Processed Buffers", Level.DEBUG),
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        new LogMessageWithLevel("Scanned Cards", Level.DEBUG),
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        new LogMessageWithLevel("Skipped Cards", Level.DEBUG),
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        new LogMessageWithLevel("Scan HCC", Level.TRACE),
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        // Scan RS
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        new LogMessageWithLevel("Scan RS", Level.DEBUG),
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        new LogMessageWithLevel("Scanned Cards", Level.DEBUG),
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        new LogMessageWithLevel("Claimed Cards", Level.DEBUG),
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        new LogMessageWithLevel("Skipped Cards", Level.DEBUG),
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        // Ext Root Scan
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        new LogMessageWithLevel("Thread Roots", Level.TRACE),
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        new LogMessageWithLevel("StringTable Roots", Level.TRACE),
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        new LogMessageWithLevel("Universe Roots", Level.TRACE),
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        new LogMessageWithLevel("JNI Handles Roots", Level.TRACE),
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        new LogMessageWithLevel("ObjectSynchronizer Roots", Level.TRACE),
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        new LogMessageWithLevel("FlatProfiler Roots", Level.TRACE),
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        new LogMessageWithLevel("Management Roots", Level.TRACE),
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        new LogMessageWithLevel("SystemDictionary Roots", Level.TRACE),
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        new LogMessageWithLevel("CLDG Roots", Level.TRACE),
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        new LogMessageWithLevel("JVMTI Roots", Level.TRACE),
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        new LogMessageWithLevel("SATB Filtering", Level.TRACE),
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        new LogMessageWithLevel("CM RefProcessor Roots", Level.TRACE),
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        new LogMessageWithLevel("Wait For Strong CLD", Level.TRACE),
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        new LogMessageWithLevel("Weak CLD Roots", Level.TRACE),
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        // Redirty Cards
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        new LogMessageWithLevel("Redirty Cards", Level.DEBUG),
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        new LogMessageWithLevel("Parallel Redirty", Level.TRACE),
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        new LogMessageWithLevel("Redirtied Cards", Level.TRACE),
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        // Misc Top-level
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        new LogMessageWithLevel("Code Roots Purge", Level.DEBUG),
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        new LogMessageWithLevel("String Dedup Fixup", Level.DEBUG),
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        new LogMessageWithLevel("Expand Heap After Collection", Level.DEBUG),
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        // Free CSet
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        new LogMessageWithLevel("Free Collection Set", Level.DEBUG),
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        new LogMessageWithLevel("Free Collection Set Serial", Level.TRACE),
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        new LogMessageWithLevel("Young Free Collection Set", Level.TRACE),
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        new LogMessageWithLevel("Non-Young Free Collection Set", Level.TRACE),
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        // Humongous Eager Reclaim
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        new LogMessageWithLevel("Humongous Reclaim", Level.DEBUG),
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        new LogMessageWithLevel("Humongous Register", Level.DEBUG),
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        // Preserve CM Referents
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        new LogMessageWithLevel("Preserve CM Refs", Level.DEBUG),
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        // Merge PSS
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        new LogMessageWithLevel("Merge Per-Thread State", Level.DEBUG),
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        // TLAB handling
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        new LogMessageWithLevel("Prepare TLABs", Level.DEBUG),
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        new LogMessageWithLevel("Resize TLABs", Level.DEBUG),
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        // Reference Processing
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        new LogMessageWithLevel("Reference Processing", Level.DEBUG),
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        new LogMessageWithLevel("Reference Enqueuing", Level.DEBUG),
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        new LogMessageWithLevelC2OrJVMCIOnly("DerivedPointerTable Update", Level.DEBUG),
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        new LogMessageWithLevel("Start New Collection Set", Level.DEBUG),
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    };
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    void checkMessagesAtLevel(OutputAnalyzer output, LogMessageWithLevel messages[], Level level) throws Exception {
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        for (LogMessageWithLevel l : messages) {
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            if (level.lessThan(l.level) || !l.isAvailable()) {
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                output.shouldNotContain(l.message);
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            } else {
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                output.shouldMatch("\\[" + l.level + ".*" + l.message);
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            }
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        }
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    }
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    public static void main(String[] args) throws Exception {
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        new TestGCLogMessages().testNormalLogs();
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        new TestGCLogMessages().testWithToSpaceExhaustionLogs();
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        new TestGCLogMessages().testWithInitialMark();
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        new TestGCLogMessages().testExpandHeap();
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    }
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    private void testNormalLogs() throws Exception {
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        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                                  "-Xmx10M",
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                                                                  GCTest.class.getName());
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        OutputAnalyzer output = new OutputAnalyzer(pb.start());
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        checkMessagesAtLevel(output, allLogMessages, Level.OFF);
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        output.shouldHaveExitValue(0);
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        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                   "-XX:+UseStringDeduplication",
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                                                   "-Xmx10M",
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                                                   "-Xlog:gc+phases=debug",
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                                                   GCTest.class.getName());
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        output = new OutputAnalyzer(pb.start());
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        checkMessagesAtLevel(output, allLogMessages, Level.DEBUG);
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        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                   "-XX:+UseStringDeduplication",
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                                                   "-Xmx10M",
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                                                   "-Xlog:gc+phases=trace",
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                                                   GCTest.class.getName());
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        output = new OutputAnalyzer(pb.start());
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        checkMessagesAtLevel(output, allLogMessages, Level.TRACE);
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        output.shouldHaveExitValue(0);
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    }
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    LogMessageWithLevel exhFailureMessages[] = new LogMessageWithLevel[] {
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        new LogMessageWithLevel("Evacuation Failure", Level.DEBUG),
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        new LogMessageWithLevel("Recalculate Used", Level.TRACE),
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        new LogMessageWithLevel("Remove Self Forwards", Level.TRACE),
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    };
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    private void testWithToSpaceExhaustionLogs() throws Exception {
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        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                                  "-Xmx32M",
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                                                                  "-Xmn16M",
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                                                                  "-Xlog:gc+phases=debug",
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                                                                  GCTestWithToSpaceExhaustion.class.getName());
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        OutputAnalyzer output = new OutputAnalyzer(pb.start());
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        checkMessagesAtLevel(output, exhFailureMessages, Level.DEBUG);
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        output.shouldHaveExitValue(0);
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        pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                   "-Xmx32M",
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                                                   "-Xmn16M",
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                                                   "-Xlog:gc+phases=trace",
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                                                   GCTestWithToSpaceExhaustion.class.getName());
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        output = new OutputAnalyzer(pb.start());
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        checkMessagesAtLevel(output, exhFailureMessages, Level.TRACE);
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        output.shouldHaveExitValue(0);
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    }
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    private void testWithInitialMark() throws Exception {
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        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                                  "-Xmx10M",
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                                                                  "-Xbootclasspath/a:.",
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                                                                  "-Xlog:gc*=debug",
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                                                                  "-XX:+UnlockDiagnosticVMOptions",
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                                                                  "-XX:+WhiteBoxAPI",
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                                                                  GCTestWithInitialMark.class.getName());
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        OutputAnalyzer output = new OutputAnalyzer(pb.start());
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        output.shouldContain("Clear Claimed Marks");
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        output.shouldHaveExitValue(0);
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    }
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    private void testExpandHeap() throws Exception {
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        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC",
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                                                                  "-Xmx10M",
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                                                                  "-Xbootclasspath/a:.",
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                                                                  "-Xlog:gc+ergo+heap=debug",
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                                                                  "-XX:+UnlockDiagnosticVMOptions",
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                                                                  "-XX:+WhiteBoxAPI",
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                                                                  GCTest.class.getName());
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        OutputAnalyzer output = new OutputAnalyzer(pb.start());
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        output.shouldContain("Expand the heap. requested expansion amount: ");
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        output.shouldContain("B expansion amount: ");
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        output.shouldHaveExitValue(0);
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    }
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    static class GCTest {
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        private static byte[] garbage;
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        public static void main(String [] args) {
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            System.out.println("Creating garbage");
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            // create 128MB of garbage. This should result in at least one GC
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            for (int i = 0; i < 1024; i++) {
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                garbage = new byte[128 * 1024];
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            }
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            System.out.println("Done");
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        }
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    }
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    static class GCTestWithToSpaceExhaustion {
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        private static byte[] garbage;
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        private static byte[] largeObject;
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        public static void main(String [] args) {
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            largeObject = new byte[16*1024*1024];
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            System.out.println("Creating garbage");
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            // create 128MB of garbage. This should result in at least one GC,
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            // some of them with to-space exhaustion.
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            for (int i = 0; i < 1024; i++) {
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                garbage = new byte[128 * 1024];
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            }
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            System.out.println("Done");
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        }
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    }
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    static class GCTestWithInitialMark {
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        public static void main(String [] args) {
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            sun.hotspot.WhiteBox WB = sun.hotspot.WhiteBox.getWhiteBox();
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            WB.g1StartConcMarkCycle();
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        }
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    }
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}
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