72 lines
2.7 KiB
Java
72 lines
2.7 KiB
Java
/*
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* Copyright (c) 2012, 2023, 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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package gc.g1;
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import static gc.testlibrary.Allocation.blackHole;
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/*
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* @test TestHumongousAllocNearlyFullRegion
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* @bug 8143587
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* @summary G1: humongous object allocations should work even when there is
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* not enough space in the G1HeapRegion to fit a filler object.
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* @requires vm.gc.G1
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* @modules java.base/jdk.internal.misc
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* @library /test/lib
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* @library /
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* @run driver gc.g1.TestHumongousAllocNearlyFullRegion
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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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public class TestHumongousAllocNearlyFullRegion {
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// Heap sizes < 224 MB are increased to 224 MB if vm_page_size == 64K to
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// fulfill alignment constraints.
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private static final int heapSize = 224; // MB
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private static final int heapRegionSize = 1; // MB
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public static void main(String[] args) throws Exception {
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OutputAnalyzer output = ProcessTools.executeLimitedTestJava(
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"-XX:+UseG1GC",
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"-Xms" + heapSize + "m",
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"-Xmx" + heapSize + "m",
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"-XX:G1HeapRegionSize=" + heapRegionSize + "m",
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"-Xlog:gc",
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HumongousObjectAllocator.class.getName());
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output.shouldContain("Pause Young (Concurrent Start) (G1 Humongous Allocation)");
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output.shouldHaveExitValue(0);
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}
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static class HumongousObjectAllocator {
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public static void main(String [] args) {
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for (int i = 0; i < heapSize; i++) {
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// 131069 is the number of longs it takes to fill a G1HeapRegion except
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// for 8 bytes on 64 bit.
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blackHole(new long[131069]);
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}
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}
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}
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}
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