| /* |
| * Copyright (c) 2015, 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 |
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| */ |
| |
| /** |
| * @test |
| * @requires vm.cds |
| * @summary Check to make sure that shared strings in the bootstrap CDS archive |
| * are actually shared |
| * Feature support: G1GC only, compressed oops/kptrs, 64-bit os, not on windows |
| * @requires (sun.arch.data.model != "32") & (os.family != "windows") |
| * @requires (vm.opt.UseCompressedOops == null) | (vm.opt.UseCompressedOops == true) |
| * @requires vm.gc.G1 |
| * @library /test/lib |
| * @modules java.base/jdk.internal.misc |
| * java.management |
| * @build SharedStringsWb sun.hotspot.WhiteBox |
| * @run main ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox |
| * @run main SharedStrings |
| */ |
| |
| import jdk.test.lib.cds.CDSTestUtils; |
| import jdk.test.lib.process.ProcessTools; |
| import jdk.test.lib.process.OutputAnalyzer; |
| |
| public class SharedStrings { |
| public static void main(String[] args) throws Exception { |
| // Note: This is a basic sanity test for Shared Strings feature. |
| // This also serves as a reference on how to use this feature, |
| // hence the command lines are spelled out instead of using the |
| // test utils methods. |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./SharedStrings.jsa", |
| "-XX:+UseG1GC", |
| "-XX:+UseCompressedOops", |
| "-Xlog:cds,cds+hashtables", |
| // Needed for bootclasspath match, for CDS to work with WhiteBox API |
| "-Xbootclasspath/a:" + ClassFileInstaller.getJarPath("whitebox.jar"), |
| "-Xshare:dump"); |
| |
| OutputAnalyzer out = CDSTestUtils.executeAndLog(pb, "dump"); |
| CDSTestUtils.checkDump(out, "Shared string table stats"); |
| |
| |
| pb = ProcessTools.createJavaProcessBuilder( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=./SharedStrings.jsa", |
| // these are required modes for shared strings |
| "-XX:+UseCompressedOops", "-XX:+UseG1GC", |
| // needed for access to white box test API |
| "-Xbootclasspath/a:" + ClassFileInstaller.getJarPath("whitebox.jar"), |
| "-XX:+UnlockDiagnosticVMOptions", "-XX:+WhiteBoxAPI", |
| "-Xshare:on", "-showversion", "SharedStringsWb"); |
| |
| out = CDSTestUtils.executeAndLog(pb, "exec"); |
| CDSTestUtils.checkExec(out); |
| } |
| } |