--- a/hotspot/test/gc/g1/TestG1TraceReclaimDeadHumongousObjectsAtYoungGC.java Thu Jan 15 13:09:43 2015 -0800
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -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<Object> garbageList = new LinkedList<Object>();
- // 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");
- }
- }
-}