ctornqvi@5257: /*
ctornqvi@5257:  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
ctornqvi@5257:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ctornqvi@5257:  *
ctornqvi@5257:  * This code is free software; you can redistribute it and/or modify it
ctornqvi@5257:  * under the terms of the GNU General Public License version 2 only, as
ctornqvi@5257:  * published by the Free Software Foundation.
ctornqvi@5257:  *
ctornqvi@5257:  * This code is distributed in the hope that it will be useful, but WITHOUT
ctornqvi@5257:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ctornqvi@5257:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ctornqvi@5257:  * version 2 for more details (a copy is included in the LICENSE file that
ctornqvi@5257:  * accompanied this code).
ctornqvi@5257:  *
ctornqvi@5257:  * You should have received a copy of the GNU General Public License version
ctornqvi@5257:  * 2 along with this work; if not, write to the Free Software Foundation,
ctornqvi@5257:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ctornqvi@5257:  *
ctornqvi@5257:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ctornqvi@5257:  * or visit www.oracle.com if you need additional information or have any
ctornqvi@5257:  * questions.
ctornqvi@5257:  */
ctornqvi@5257: 
ctornqvi@5257: /*
ctornqvi@5257:  * @test CdsSameObjectAlignment
ctornqvi@5257:  * @summary Testing CDS (class data sharing) using varying object alignment.
ctornqvi@5257:  *          Using same object alignment for each dump/load pair
ctornqvi@5257:  * @library /testlibrary
ctornqvi@5257:  */
ctornqvi@5257: 
ctornqvi@5257: import com.oracle.java.testlibrary.*;
ctornqvi@5257: 
ctornqvi@5257: public class CdsSameObjectAlignment {
ctornqvi@5257:     public static void main(String[] args) throws Exception {
ctornqvi@5257:         String nativeWordSize = System.getProperty("sun.arch.data.model");
ctornqvi@5257:         if (!Platform.is64bit()) {
ctornqvi@5257:             System.out.println("ObjectAlignmentInBytes for CDS is only " +
ctornqvi@5257:                 "supported on 64bit platforms; this plaform is " +
ctornqvi@5257:                 nativeWordSize);
ctornqvi@5257:             System.out.println("Skipping the test");
ctornqvi@5257:         } else {
ctornqvi@5257:             dumpAndLoadSharedArchive(8);
ctornqvi@5257:             dumpAndLoadSharedArchive(16);
ctornqvi@5257:             dumpAndLoadSharedArchive(32);
ctornqvi@5257:             dumpAndLoadSharedArchive(64);
ctornqvi@5257:         }
ctornqvi@5257:     }
ctornqvi@5257: 
ctornqvi@5257:     private static void
ctornqvi@5257:     dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception {
ctornqvi@5257:         String objectAlignmentArg = "-XX:ObjectAlignmentInBytes="
ctornqvi@5257:             + objectAlignmentInBytes;
ctornqvi@5257:         System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = "
ctornqvi@5257:             + objectAlignmentInBytes);
ctornqvi@5257: 
ctornqvi@5257:         // create shared archive
ctornqvi@5257:         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
ctornqvi@5257:             "-XX:+UnlockDiagnosticVMOptions",
ctornqvi@5257:             "-XX:SharedArchiveFile=./sample.jsa",
ctornqvi@5257:             "-Xshare:dump",
ctornqvi@5257:             objectAlignmentArg);
ctornqvi@5257: 
ctornqvi@5257:         OutputAnalyzer output = new OutputAnalyzer(pb.start());
ctornqvi@5257:         output.shouldContain("Loading classes to share");
ctornqvi@5257:         output.shouldHaveExitValue(0);
ctornqvi@5257: 
ctornqvi@5257: 
ctornqvi@5257:         // run using the shared archive
ctornqvi@5257:         pb = ProcessTools.createJavaProcessBuilder(
ctornqvi@5257:             "-XX:+UnlockDiagnosticVMOptions",
ctornqvi@5257:             "-XX:SharedArchiveFile=./sample.jsa",
ctornqvi@5257:             "-Xshare:on",
ctornqvi@5257:             objectAlignmentArg,
ctornqvi@5257:             "-version");
ctornqvi@5257: 
ctornqvi@5257:         output = new OutputAnalyzer(pb.start());
ctornqvi@5257: 
ctornqvi@5257:         try {
ctornqvi@5257:             output.shouldContain("sharing");
ctornqvi@5257:             output.shouldHaveExitValue(0);
ctornqvi@5257:         } catch (RuntimeException e) {
ctornqvi@5257:             // CDS uses absolute addresses for performance.
ctornqvi@5257:             // It will try to reserve memory at a specific address;
ctornqvi@5257:             // there is a chance such reservation will fail
ctornqvi@5257:             // If it does, it is NOT considered a failure of the feature,
ctornqvi@5257:             // rather a possible expected outcome, though not likely
hseigel@5528:             output.shouldContain("Could not allocate metaspace at a compatible address");
ctornqvi@5257:             output.shouldHaveExitValue(1);
ctornqvi@5257:         }
ctornqvi@5257:     }
ctornqvi@5257: }