Mercurial > hg > graal-compiler
diff test/gc/g1/TestHumongousAllocInitialMark.java @ 12898:6f1919cfd18c
8023158: hotspot/test/gc/7168848/HumongousAlloc.java fails 14 full gcs, expect 0 full gcs
Reviewed-by: brutisso, tschatzl
author | pliden |
---|---|
date | Tue, 15 Oct 2013 11:38:47 +0200 |
parents | test/gc/7168848/HumongousAlloc.java@9a344d88dc22 |
children | de6a9e811145 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/gc/g1/TestHumongousAllocInitialMark.java Tue Oct 15 11:38:47 2013 +0200 @@ -0,0 +1,75 @@ +/* + * Copyright (c) 2012, 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 TestHumongousAllocInitialMark + * @bug 7168848 + * @summary G1: humongous object allocations should initiate marking cycles when necessary + * @library /testlibrary + */ + +import com.oracle.java.testlibrary.*; + +public class TestHumongousAllocInitialMark { + private static final int heapSize = 200; // MB + private static final int heapRegionSize = 1; // MB + private static final int initiatingHeapOccupancyPercent = 50; // % + + public static void main(String[] args) throws Exception { + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( + "-XX:+UseG1GC", + "-Xms" + heapSize + "m", + "-Xmx" + heapSize + "m", + "-XX:G1HeapRegionSize=" + heapRegionSize + "m", + "-XX:InitiatingHeapOccupancyPercent=" + initiatingHeapOccupancyPercent, + "-XX:+PrintGC", + HumongousObjectAllocator.class.getName()); + + OutputAnalyzer output = new OutputAnalyzer(pb.start()); + output.shouldContain("GC pause (G1 Humongous Allocation) (young) (initial-mark)"); + output.shouldNotContain("Full GC"); + output.shouldHaveExitValue(0); + } + + static class HumongousObjectAllocator { + private static byte[] dummy; + + public static void main(String [] args) throws Exception { + // Make object size 75% of region size + final int humongousObjectSize = + (int)(heapRegionSize * 1024 * 1024 * 0.75); + + // Number of objects to allocate to go above IHOP + final int humongousObjectAllocations = + (int)((heapSize * initiatingHeapOccupancyPercent / 100.0) / heapRegionSize) + 1; + + // Allocate + for (int i = 1; i <= humongousObjectAllocations; i++) { + System.out.println("Allocating humongous object " + i + "/" + humongousObjectAllocations + + " of size " + humongousObjectSize + " bytes"); + dummy = new byte[humongousObjectSize]; + } + } + } +} +