--- old/test/gc/g1/TestG1TraceReclaimDeadHumongousObjectsAtYoungGC.java 2014-12-18 11:26:30.408943933 +0100 +++ /dev/null 2014-12-12 17:10:47.511674808 +0100 @@ -1,142 +0,0 @@ -/* - * Copyright (c) 2014, 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. - */ - -/* - * @test TestG1TraceReclaimDeadHumongousObjectsAtYoungGC - * @bug 8058801 - * @summary Ensure that the output for a G1TraceReclaimDeadHumongousObjectsAtYoungGC - * includes the expected necessary messages. - * @key gc - * @library /testlibrary - */ - -import com.oracle.java.testlibrary.ProcessTools; -import com.oracle.java.testlibrary.OutputAnalyzer; -import java.util.LinkedList; - -public class TestG1TraceReclaimDeadHumongousObjectsAtYoungGC { - public static void main(String[] args) throws Exception { - testGCLogs(); - testHumongousObjectGCLogs(); - } - - private static void testGCLogs() throws Exception { - - ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", - "-Xms128M", - "-Xmx128M", - "-Xmn16M", - "-XX:G1HeapRegionSize=1M", - "-XX:+PrintGC", - "-XX:+UnlockExperimentalVMOptions", - "-XX:G1LogLevel=finest", - "-XX:+G1TraceReclaimDeadHumongousObjectsAtYoungGC", - GCTest.class.getName()); - - OutputAnalyzer output = new OutputAnalyzer(pb.start()); - - // As G1ReclaimDeadHumongousObjectsAtYoungGC is set(default), below logs should be displayed. - // And GCTest doesn't have humongous objects, so values should be zero. - output.shouldContain("[Humongous Reclaim"); - output.shouldContain("[Humongous Total: 0]"); - output.shouldContain("[Humongous Candidate: 0]"); - output.shouldContain("[Humongous Reclaimed: 0]"); - - output.shouldHaveExitValue(0); - } - - private static void testHumongousObjectGCLogs() throws Exception { - ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", - "-Xms128M", - "-Xmx128M", - "-Xmn16M", - "-XX:G1HeapRegionSize=1M", - "-XX:+PrintGC", - "-XX:+UnlockExperimentalVMOptions", - "-XX:G1LogLevel=finest", - "-XX:+G1TraceReclaimDeadHumongousObjectsAtYoungGC", - GCWithHumongousObjectTest.class.getName()); - - OutputAnalyzer output = new OutputAnalyzer(pb.start()); - - // As G1ReclaimDeadHumongousObjectsAtYoungGC is set(default), below logs should be displayed. - output.shouldContain("[Humongous Reclaim"); - output.shouldContain("[Humongous Total"); - output.shouldContain("[Humongous Candidate"); - output.shouldContain("[Humongous Reclaimed"); - - // As G1TraceReclaimDeadHumongousObjectsAtYoungGC is set and GCWithHumongousObjectTest has humongous objects, - // these logs should be displayed. - output.shouldContain("Live humongous"); - output.shouldContain("Reclaim humongous region"); - output.shouldHaveExitValue(0); - } - - static class GCTest { - private static byte[] garbage; - - public static void main(String [] args) { - System.out.println("Creating garbage"); - // create 128MB of garbage. This should result in at least one GC - for (int i = 0; i < 1024; i++) { - garbage = new byte[128 * 1024]; - } - System.out.println("Done"); - } - } - - static class GCWithHumongousObjectTest { - - public static final int M = 1024*1024; - public static LinkedList garbageList = new LinkedList(); - // A large object referenced by a static. - static int[] filler = new int[10 * M]; - - public static void genGarbage() { - for (int i = 0; i < 32*1024; i++) { - garbageList.add(new int[100]); - } - garbageList.clear(); - } - - public static void main(String[] args) { - - int[] large = new int[M]; - Object ref = large; - - System.out.println("Creating garbage"); - for (int i = 0; i < 100; i++) { - // A large object that will be reclaimed eagerly. - large = new int[6*M]; - genGarbage(); - // Make sure that the compiler cannot completely remove - // the allocation of the large object until here. - System.out.println(large); - } - - // Keep the reference to the first object alive. - System.out.println(ref); - System.out.println("Done"); - } - } -} --- /dev/null 2014-12-12 17:10:47.511674808 +0100 +++ new/test/gc/g1/TestG1TraceEagerReclaimHumongousObjects.java 2014-12-18 11:26:30.293940571 +0100 @@ -0,0 +1,142 @@ +/* + * Copyright (c) 2014, 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. + */ + +/* + * @test TestG1TraceEagerReclaimHumongousObjects + * @bug 8058801 8048179 + * @summary Ensure that the output for a G1TraceEagerReclaimHumongousObjects + * includes the expected necessary messages. + * @key gc + * @library /testlibrary + */ + +import com.oracle.java.testlibrary.ProcessTools; +import com.oracle.java.testlibrary.OutputAnalyzer; +import java.util.LinkedList; + +public class TestG1TraceEagerReclaimHumongousObjects { + public static void main(String[] args) throws Exception { + testGCLogs(); + testHumongousObjectGCLogs(); + } + + private static void testGCLogs() throws Exception { + + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", + "-Xms128M", + "-Xmx128M", + "-Xmn16M", + "-XX:G1HeapRegionSize=1M", + "-XX:+PrintGC", + "-XX:+UnlockExperimentalVMOptions", + "-XX:G1LogLevel=finest", + "-XX:+G1TraceEagerReclaimHumongousObjects", + GCTest.class.getName()); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + + // As G1EagerReclaimHumongousObjects is set(default), below logs should be displayed. + // And GCTest doesn't have humongous objects, so values should be zero. + output.shouldContain("[Humongous Reclaim"); + output.shouldContain("[Humongous Total: 0]"); + output.shouldContain("[Humongous Candidate: 0]"); + output.shouldContain("[Humongous Reclaimed: 0]"); + + output.shouldHaveExitValue(0); + } + + private static void testHumongousObjectGCLogs() throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+UseG1GC", + "-Xms128M", + "-Xmx128M", + "-Xmn16M", + "-XX:G1HeapRegionSize=1M", + "-XX:+PrintGC", + "-XX:+UnlockExperimentalVMOptions", + "-XX:G1LogLevel=finest", + "-XX:+G1TraceEagerReclaimHumongousObjects", + GCWithHumongousObjectTest.class.getName()); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + + // As G1ReclaimDeadHumongousObjectsAtYoungGC is set(default), below logs should be displayed. + output.shouldContain("[Humongous Reclaim"); + output.shouldContain("[Humongous Total"); + output.shouldContain("[Humongous Candidate"); + output.shouldContain("[Humongous Reclaimed"); + + // As G1TraceReclaimDeadHumongousObjectsAtYoungGC is set and GCWithHumongousObjectTest has humongous objects, + // these logs should be displayed. + output.shouldContain("Live humongous"); + output.shouldContain("Dead humongous region"); + output.shouldHaveExitValue(0); + } + + static class GCTest { + private static byte[] garbage; + + public static void main(String [] args) { + System.out.println("Creating garbage"); + // create 128MB of garbage. This should result in at least one GC + for (int i = 0; i < 1024; i++) { + garbage = new byte[128 * 1024]; + } + System.out.println("Done"); + } + } + + static class GCWithHumongousObjectTest { + + public static final int M = 1024*1024; + public static LinkedList garbageList = new LinkedList(); + // A large object referenced by a static. + static int[] filler = new int[10 * M]; + + public static void genGarbage() { + for (int i = 0; i < 32*1024; i++) { + garbageList.add(new int[100]); + } + garbageList.clear(); + } + + public static void main(String[] args) { + + int[] large = new int[M]; + Object ref = large; + + System.out.println("Creating garbage"); + for (int i = 0; i < 100; i++) { + // A large object that will be reclaimed eagerly. + large = new int[6*M]; + genGarbage(); + // Make sure that the compiler cannot completely remove + // the allocation of the large object until here. + System.out.println(large); + } + + // Keep the reference to the first object alive. + System.out.println(ref); + System.out.println("Done"); + } + } +}