Mercurial > hg > graal-jvmci-8
diff test/runtime/SharedArchiveFile/CdsSameObjectAlignment.java @ 10971:1e9094165098
8015324: Create tests for CDS feature
Summary: Wrote tests for use of CDS with ObjectAlignmentInBytes CL option
Reviewed-by: coleenp, ctornqvi, hseigel
Contributed-by: Mikhailo Seledtsov <mikhailo.seledtsov@oracle.com>
author | ctornqvi |
---|---|
date | Thu, 13 Jun 2013 22:00:06 +0200 |
parents | |
children | 740e263c80c6 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/runtime/SharedArchiveFile/CdsSameObjectAlignment.java Thu Jun 13 22:00:06 2013 +0200 @@ -0,0 +1,92 @@ +/* + * 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 reserve shared space at required address"); + output.shouldHaveExitValue(1); + } + } +}