110 lines
3.9 KiB
Java
110 lines
3.9 KiB
Java
/*
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* Copyright (c) 2018, 2020, 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.nvdimm;
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/*
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* @test TestOldObjectsOnNvdimm
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* @summary Check that objects in old generation reside in dram.
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* @requires vm.gc=="null" & os.family != "aix"
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* @requires test.vm.gc.nvdimm
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* @library /test/lib
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* @build sun.hotspot.WhiteBox
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox
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* @run driver gc.nvdimm.TestOldObjectsOnNvdimm
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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.Asserts;
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import sun.hotspot.WhiteBox;
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import java.util.ArrayList;
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import java.util.Collections;
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/*
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* Test spawns OldObjectTest in a separate VM and expects that it
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* completes without a RuntimeException.
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*/
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public class TestOldObjectsOnNvdimm {
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public static final int ALLOCATION_SIZE = 100;
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private static String[] commonFlags;
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public static void main(String args[]) throws Exception {
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commonFlags = new String[] {
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"-Xbootclasspath/a:.",
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"-XX:+UnlockExperimentalVMOptions",
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:+WhiteBoxAPI",
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"-XX:AllocateOldGenAt=" + System.getProperty("test.dir", "."),
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"-Xms10M", "-Xmx10M",
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"-XX:MaxTenuringThreshold=1" // Promote objects to Old Gen
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};
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runTest("-XX:+UseG1GC");
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runTest("-XX:+UseParallelGC");
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}
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private static void runTest(String... extraFlags) throws Exception {
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ArrayList<String> flags = new ArrayList<>();
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Collections.addAll(flags, commonFlags);
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Collections.addAll(flags, extraFlags);
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flags.add(OldObjectTest.class.getName());
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ProcessBuilder pb = ProcessTools.createTestJvm(flags);
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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System.out.println(output.getStdout());
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output.shouldHaveExitValue(0);
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}
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}
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/*
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* This class tests that object is in Old generation after tenuring and resides in NVDIMM.
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* The necessary condition for this test is running in VM with the following flags:
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* -XX:AllocateOldGenAt=, -XX:MaxTenuringThreshold=1
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*/
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class OldObjectTest {
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private static final WhiteBox WB = WhiteBox.getWhiteBox();
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private static void validateOldObject(Object o) {
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Asserts.assertTrue(WB.isObjectInOldGen(o),
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"Object is supposed to be in OldGen");
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long oldObj_addr = WB.getObjectAddress(o);
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long nvdimm_heap_start = WB.nvdimmReservedStart();
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long nvdimm_heap_end = WB.nvdimmReservedEnd();
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Asserts.assertTrue(oldObj_addr >= nvdimm_heap_start && oldObj_addr <= nvdimm_heap_end,
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"Old object does not reside in NVDIMM");
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}
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public static void main(String args[]) throws Exception {
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// allocate an object and perform Young GCs to promote it to Old
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byte[] oldObj = new byte[TestOldObjectsOnNvdimm.ALLOCATION_SIZE];
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WB.youngGC();
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WB.youngGC();
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validateOldObject(oldObj);
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}
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}
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