| /* |
| * Copyright (c) 2018, 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 |
| * @bug 8161605 |
| * @summary Tests that jvmtiEnv::GetPotentialCapabilities reports |
| * can_generate_all_class_hook_events capability with CDS (-Xshare:on) |
| * at ONLOAD and LIVE phases |
| * @requires vm.cds |
| * @library /test/lib |
| * @compile CanGenerateAllClassHook.java |
| * @run main/othervm/native CanGenerateAllClassHook |
| */ |
| |
| import jdk.test.lib.cds.CDSTestUtils; |
| import jdk.test.lib.process.OutputAnalyzer; |
| import jdk.test.lib.process.ProcessTools; |
| import java.io.File; |
| import java.io.IOException; |
| |
| /* |
| * The simplest way to test is to use system classes.jsa, |
| * but we cannot rely on tested JRE/JDK has it. |
| * So the test runs 2 java processes - |
| * 1st to generate custom shared archive file: |
| * java -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=<jsa_file> -Xshare:dump |
| * and 2nd to perform the actual testing using generated shared archive: |
| * java -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=<jsa_file> -Xshare:on |
| * -agentlib:<agent> CanGenerateAllClassHook |
| */ |
| public class CanGenerateAllClassHook { |
| |
| private static final String agentLib = "CanGenerateAllClassHook"; |
| |
| private static native int getClassHookAvail(); |
| private static native int getOnLoadClassHookAvail(); |
| |
| public static void main(String[] args) throws Exception { |
| if (args.length == 0) { |
| // this is master run |
| |
| final File jsaFile = File.createTempFile(agentLib, ".jsa"); |
| jsaFile.deleteOnExit(); |
| final String jsaPath = jsaFile.getAbsolutePath(); |
| |
| log("generating CDS archive..."); |
| execJava( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=" + jsaPath, |
| "-Xshare:dump") |
| .shouldHaveExitValue(0); |
| log("CDS generation completed."); |
| |
| OutputAnalyzer output = execJava( |
| "-XX:+UnlockDiagnosticVMOptions", |
| "-XX:SharedArchiveFile=" + jsaPath, |
| "-Xshare:on", |
| "-agentlib:" + agentLib, |
| // copy java.library.path |
| "-Djava.library.path=" + System.getProperty("java.library.path"), |
| // specify "-showversion" to ensure the test runs in shared mode |
| "-showversion", |
| // class to run |
| CanGenerateAllClassHook.class.getCanonicalName(), |
| // and arg |
| "test"); |
| // Xshare:on can cause intermittent failure |
| // checkExec handles this. |
| CDSTestUtils.checkExec(output); |
| |
| log("Test PASSED."); |
| } else { |
| // this is test run |
| try { |
| System.loadLibrary(agentLib); |
| } catch (UnsatisfiedLinkError ex) { |
| System.err.println("Failed to load " + agentLib + " lib"); |
| System.err.println("java.library.path: " + System.getProperty("java.library.path")); |
| throw ex; |
| } |
| |
| final int onLoadValue = getOnLoadClassHookAvail(); |
| final int liveValue = getClassHookAvail(); |
| // Possible values returned: |
| // 1 - the capability is supported; |
| // 0 - the capability is not supported; |
| // -1 - error occured. |
| |
| log("can_generate_all_class_hook_events value capability:"); |
| log("ONLOAD phase: " + (onLoadValue < 0 ? "Failed to read" : onLoadValue)); |
| log("LIVE phase: " + (liveValue < 0 ? "Failed to read" : liveValue)); |
| if (onLoadValue != 1 || liveValue != 1) { |
| throw new RuntimeException("The can_generate_all_class_hook_events capability " |
| + " is expected to be available in both ONLOAD and LIVE phases"); |
| } |
| } |
| } |
| |
| private static void log(String msg) { |
| System.out.println(msg); |
| System.out.flush(); |
| } |
| |
| private static OutputAnalyzer execJava(String... args) throws IOException { |
| ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(args); |
| |
| OutputAnalyzer output = new OutputAnalyzer(pb.start()); |
| |
| log("[STDERR]\n" + output.getStderr()); |
| log("[STDOUT]\n" + output.getStdout()); |
| |
| return output; |
| } |
| |
| } |