| /* |
| * Copyright (c) 2013, 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 CdsSameObjectAlignment |
| * @summary Testing CDS (class data sharing) using varying object alignment. |
| * Using same object alignment for each dump/load pair |
| * @library /testlibrary |
| */ |
| |
| import com.oracle.java.testlibrary.*; |
| |
| public class CdsSameObjectAlignment { |
| public static void main(String[] args) throws Exception { |
| String nativeWordSize = System.getProperty("sun.arch.data.model"); |
| if (!Platform.is64bit()) { |
| System.out.println("ObjectAlignmentInBytes for CDS is only " + |
| "supported on 64bit platforms; this plaform is " + |
| nativeWordSize); |
| System.out.println("Skipping the test"); |
| } else { |
| dumpAndLoadSharedArchive(8); |
| dumpAndLoadSharedArchive(16); |
| dumpAndLoadSharedArchive(32); |
| dumpAndLoadSharedArchive(64); |
| } |
| } |
| |
| private static void |
| dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception { |
| String objectAlignmentArg = "-XX:ObjectAlignmentInBytes=" |
| + objectAlignmentInBytes; |
| System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = " |
| + objectAlignmentInBytes); |
| |
| // create shared archive |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./sample.jsa", |
| "-Xshare:dump", |
| objectAlignmentArg); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| output.shouldContain("Loading classes to share"); |
| output.shouldHaveExitValue(0); |
| |
| |
| // run using the shared archive |
| pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./sample.jsa", |
| "-Xshare:on", |
| objectAlignmentArg, |
| "-version"); |
| |
| output = new OutputAnalyzer(pb.start()); |
| |
| try { |
| output.shouldContain("sharing"); |
| output.shouldHaveExitValue(0); |
| } catch (RuntimeException e) { |
| // CDS uses absolute addresses for performance. |
| // It will try to reserve memory at a specific address; |
| // there is a chance such reservation will fail |
| // If it does, it is NOT considered a failure of the feature, |
| // rather a possible expected outcome, though not likely |
| output.shouldContain("Unable to use shared archive"); |
| output.shouldHaveExitValue(1); |
| } |
| } |
| } |