| /* |
| * Copyright (c) 2013, 2017, 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 |
| * @bug 8024927 |
| * @summary Testing address of compressed class pointer space as best as possible. |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| */ |
| |
| import jdk.test.lib.Platform; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class CompressedClassPointers { |
| |
| public static void smallHeapTest() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedBaseAddress=8g", |
| "-Xmx128m", |
| "-Xlog:gc+metaspace=trace", |
| "-XX:+VerifyBeforeGC", "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("Narrow klass base: 0x0000000000000000"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void smallHeapTestWith3G() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:CompressedClassSpaceSize=3g", |
| "-Xmx128m", |
| "-Xlog:gc+metaspace=trace", |
| "-XX:+VerifyBeforeGC", "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("Narrow klass base: 0x0000000000000000, Narrow klass shift: 3"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void largeHeapTest() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-Xmx30g", |
| "-XX:-UseAOT", // AOT explicitly set klass shift to 3. |
| "-Xlog:gc+metaspace=trace", |
| "-XX:+VerifyBeforeGC", "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldNotContain("Narrow klass base: 0x0000000000000000"); |
| output.shouldContain("Narrow klass shift: 0"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void largePagesTest() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-Xmx128m", |
| "-XX:+UseLargePages", |
| "-Xlog:gc+metaspace=trace", |
| "-XX:+VerifyBeforeGC", "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("Narrow klass base:"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void heapBaseMinAddressTest() throws Exception { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:HeapBaseMinAddress=1m", |
| "-Xlog:gc+heap+coops=debug", |
| "-version"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("HeapBaseMinAddress must be at least"); |
| output.shouldHaveExitValue(0); |
| } |
| |
| public static void sharingTest() throws Exception { |
| // Test small heaps |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./CompressedClassPointers.jsa", |
| "-Xmx128m", |
| "-XX:SharedBaseAddress=8g", |
| "-XX:+PrintCompressedOopsMode", |
| "-XX:+VerifyBeforeGC", |
| "-Xshare:dump"); |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| if (output.firstMatch("Shared spaces are not supported in this VM") != null) { |
| return; |
| } |
| try { |
| output.shouldContain("Loading classes to share"); |
| output.shouldHaveExitValue(0); |
| |
| pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./CompressedClassPointers.jsa", |
| "-Xmx128m", |
| "-XX:SharedBaseAddress=8g", |
| "-XX:+PrintCompressedOopsMode", |
| "-Xshare:on", |
| "-version"); |
| output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("sharing"); |
| output.shouldHaveExitValue(0); |
| |
| } catch (RuntimeException e) { |
| output.shouldContain("Unable to use shared archive"); |
| output.shouldHaveExitValue(1); |
| } |
| } |
| |
| public static void main(String[] args) throws Exception { |
| if (!Platform.is64bit()) { |
| // Can't test this on 32 bit, just pass |
| System.out.println("Skipping test on 32bit"); |
| return; |
| } |
| // Solaris 10 can't mmap compressed oops space without a base |
| if (Platform.isSolaris()) { |
| String name = System.getProperty("os.version"); |
| if (name.equals("5.10")) { |
| System.out.println("Skipping test on Solaris 10"); |
| return; |
| } |
| } |
| smallHeapTest(); |
| smallHeapTestWith3G(); |
| largeHeapTest(); |
| largePagesTest(); |
| heapBaseMinAddressTest(); |
| sharingTest(); |
| } |
| } |