| /* |
| * Copyright (c) 2018, 2019, 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 TestOldObjectsOnNvdimm |
| * @summary Check that objects in old generation reside in dram. |
| * @requires vm.gc=="null" & os.family != "aix" |
| * @library /test/lib |
| * @build sun.hotspot.WhiteBox |
| * @run driver ClassFileInstaller sun.hotspot.WhiteBox |
| * @run main TestOldObjectsOnNvdimm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions |
| * -XX:+WhiteBoxAPI |
| */ |
| |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.Asserts; |
| import sun.hotspot.WhiteBox; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Collections; |
| |
| /* |
| * Test spawns OldObjectTest in a separate VM and expects that it |
| * completes without a RuntimeException. |
| */ |
| public class TestOldObjectsOnNvdimm { |
| |
| public static final int ALLOCATION_SIZE = 100; |
| private static ArrayList<String> testOpts; |
| |
| public static void main(String args[]) throws Exception { |
| testOpts = new ArrayList(); |
| |
| String[] common_options = new String[] { |
| "-Xbootclasspath/a:.", |
| "-XX:+UnlockExperimentalVMOptions", |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:+WhiteBoxAPI", |
| "-XX:AllocateOldGenAt="+System.getProperty("test.dir", "."), |
| "-Xms10M", "-Xmx10M", |
| "-XX:MaxTenuringThreshold=1" // Promote objects to Old Gen |
| }; |
| |
| String testVmOptsStr = System.getProperty("test.java.opts"); |
| if (!testVmOptsStr.isEmpty()) { |
| String[] testVmOpts = testVmOptsStr.split(" "); |
| Collections.addAll(testOpts, testVmOpts); |
| } |
| Collections.addAll(testOpts, common_options); |
| |
| // Test with G1 GC |
| runTest("-XX:+UseG1GC"); |
| // Test with ParallelOld GC |
| runTest("-XX:+UseParallelOldGC -XX:-UseAdaptiveGCBoundary"); |
| runTest("-XX:+UseParallelOldGC -XX:+UseAdaptiveGCBoundary"); |
| } |
| |
| private static void runTest(String... extraFlags) throws Exception { |
| Collections.addAll(testOpts, extraFlags); |
| testOpts.add(OldObjectTest.class.getName()); |
| System.out.println(testOpts); |
| |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(false, |
| testOpts.toArray(new String[testOpts.size()])); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| System.out.println(output.getStdout()); |
| output.shouldHaveExitValue(0); |
| } |
| } |
| |
| /* |
| * This class tests that object is in Old generation after tenuring and resides in NVDIMM. |
| * The necessary condition for this test is running in VM with the following flags: |
| * -XX:AllocateOldGenAt=, -XX:MaxTenuringThreshold=1 |
| */ |
| class OldObjectTest { |
| private static final WhiteBox WB = WhiteBox.getWhiteBox(); |
| |
| private static void validateOldObject(Object o) { |
| Asserts.assertTrue(WB.isObjectInOldGen(o), |
| "Object is supposed to be in OldGen"); |
| |
| long oldObj_addr = WB.getObjectAddress(o); |
| long nvdimm_heap_start = WB.nvdimmReservedStart(); |
| long nvdimm_heap_end = WB.nvdimmReservedEnd(); |
| |
| Asserts.assertTrue(oldObj_addr >= nvdimm_heap_start && oldObj_addr <= nvdimm_heap_end, |
| "Old object does not reside in NVDIMM"); |
| } |
| |
| public static void main(String args[]) throws Exception { |
| // allocate an object and perform Young GCs to promote it to Old |
| byte[] oldObj = new byte[TestOldObjectsOnNvdimm.ALLOCATION_SIZE]; |
| WB.youngGC(); |
| WB.youngGC(); |
| validateOldObject(oldObj); |
| } |
| } |