1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/runtime/SharedArchiveFile/CdsSameObjectAlignment.java Thu Jun 13 22:00:06 2013 +0200
1.3 @@ -0,0 +1,92 @@
1.4 +/*
1.5 + * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test CdsSameObjectAlignment
1.29 + * @summary Testing CDS (class data sharing) using varying object alignment.
1.30 + * Using same object alignment for each dump/load pair
1.31 + * @library /testlibrary
1.32 + */
1.33 +
1.34 +import com.oracle.java.testlibrary.*;
1.35 +
1.36 +public class CdsSameObjectAlignment {
1.37 + public static void main(String[] args) throws Exception {
1.38 + String nativeWordSize = System.getProperty("sun.arch.data.model");
1.39 + if (!Platform.is64bit()) {
1.40 + System.out.println("ObjectAlignmentInBytes for CDS is only " +
1.41 + "supported on 64bit platforms; this plaform is " +
1.42 + nativeWordSize);
1.43 + System.out.println("Skipping the test");
1.44 + } else {
1.45 + dumpAndLoadSharedArchive(8);
1.46 + dumpAndLoadSharedArchive(16);
1.47 + dumpAndLoadSharedArchive(32);
1.48 + dumpAndLoadSharedArchive(64);
1.49 + }
1.50 + }
1.51 +
1.52 + private static void
1.53 + dumpAndLoadSharedArchive(int objectAlignmentInBytes) throws Exception {
1.54 + String objectAlignmentArg = "-XX:ObjectAlignmentInBytes="
1.55 + + objectAlignmentInBytes;
1.56 + System.out.println("dumpAndLoadSharedArchive(): objectAlignmentInBytes = "
1.57 + + objectAlignmentInBytes);
1.58 +
1.59 + // create shared archive
1.60 + ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
1.61 + "-XX:+UnlockDiagnosticVMOptions",
1.62 + "-XX:SharedArchiveFile=./sample.jsa",
1.63 + "-Xshare:dump",
1.64 + objectAlignmentArg);
1.65 +
1.66 + OutputAnalyzer output = new OutputAnalyzer(pb.start());
1.67 + output.shouldContain("Loading classes to share");
1.68 + output.shouldHaveExitValue(0);
1.69 +
1.70 +
1.71 + // run using the shared archive
1.72 + pb = ProcessTools.createJavaProcessBuilder(
1.73 + "-XX:+UnlockDiagnosticVMOptions",
1.74 + "-XX:SharedArchiveFile=./sample.jsa",
1.75 + "-Xshare:on",
1.76 + objectAlignmentArg,
1.77 + "-version");
1.78 +
1.79 + output = new OutputAnalyzer(pb.start());
1.80 +
1.81 + try {
1.82 + output.shouldContain("sharing");
1.83 + output.shouldHaveExitValue(0);
1.84 + } catch (RuntimeException e) {
1.85 + // CDS uses absolute addresses for performance.
1.86 + // It will try to reserve memory at a specific address;
1.87 + // there is a chance such reservation will fail
1.88 + // If it does, it is NOT considered a failure of the feature,
1.89 + // rather a possible expected outcome, though not likely
1.90 + output.shouldContain(
1.91 + "Unable to reserve shared space at required address");
1.92 + output.shouldHaveExitValue(1);
1.93 + }
1.94 + }
1.95 +}
