139 lines
5.3 KiB
Java
139 lines
5.3 KiB
Java
/*
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* Copyright (c) 2018, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8161605
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* @summary Tests that jvmtiEnv::GetPotentialCapabilities reports
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* can_generate_all_class_hook_events capability with CDS (-Xshare:on)
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* at ONLOAD and LIVE phases
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* @requires vm.jvmti
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* @requires vm.cds
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* @requires vm.flagless
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* @library /test/lib
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* @compile CanGenerateAllClassHook.java
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* @run main/othervm/native CanGenerateAllClassHook
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*/
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import jdk.test.lib.cds.CDSTestUtils;
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.process.ProcessTools;
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import java.io.File;
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import java.io.IOException;
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/*
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* The simplest way to test is to use system classes.jsa,
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* but we cannot rely on tested JRE/JDK has it.
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* So the test runs 2 java processes -
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* 1st to generate custom shared archive file:
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* java -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=<jsa_file> -Xshare:dump
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* and 2nd to perform the actual testing using generated shared archive:
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* java -XX:+UnlockDiagnosticVMOptions -XX:SharedArchiveFile=<jsa_file> -Xshare:on
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* -agentlib:<agent> CanGenerateAllClassHook
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*/
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public class CanGenerateAllClassHook {
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private static final String agentLib = "CanGenerateAllClassHook";
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private static native int getClassHookAvail();
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private static native int getOnLoadClassHookAvail();
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public static void main(String[] args) throws Exception {
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if (args.length == 0) {
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// this is master run
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final File jsaFile = File.createTempFile(agentLib, ".jsa");
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jsaFile.deleteOnExit();
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final String jsaPath = jsaFile.getAbsolutePath();
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log("generating CDS archive...");
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execJava(
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:SharedArchiveFile=" + jsaPath,
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"-Xshare:dump")
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.shouldHaveExitValue(0);
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log("CDS generation completed.");
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OutputAnalyzer output = execJava(
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"-XX:+UnlockDiagnosticVMOptions",
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"-XX:SharedArchiveFile=" + jsaPath,
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"-Xshare:on",
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"-agentlib:" + agentLib,
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// copy java.library.path
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"-Djava.library.path=" + System.getProperty("java.library.path"),
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// specify "-showversion" to ensure the test runs in shared mode
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"-showversion",
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// class to run
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CanGenerateAllClassHook.class.getCanonicalName(),
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// and arg
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"test");
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// Xshare:on can cause intermittent failure
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// checkExec handles this.
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CDSTestUtils.checkExec(output);
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log("Test PASSED.");
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} else {
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// this is test run
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try {
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System.loadLibrary(agentLib);
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} catch (UnsatisfiedLinkError ex) {
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System.err.println("Failed to load " + agentLib + " lib");
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System.err.println("java.library.path: " + System.getProperty("java.library.path"));
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throw ex;
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}
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final int onLoadValue = getOnLoadClassHookAvail();
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final int liveValue = getClassHookAvail();
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// Possible values returned:
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// 1 - the capability is supported;
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// 0 - the capability is not supported;
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// -1 - error occured.
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log("can_generate_all_class_hook_events value capability:");
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log("ONLOAD phase: " + (onLoadValue < 0 ? "Failed to read" : onLoadValue));
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log("LIVE phase: " + (liveValue < 0 ? "Failed to read" : liveValue));
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if (onLoadValue != 1 || liveValue != 1) {
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throw new RuntimeException("The can_generate_all_class_hook_events capability "
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+ " is expected to be available in both ONLOAD and LIVE phases");
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}
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}
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}
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private static void log(String msg) {
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System.out.println(msg);
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System.out.flush();
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}
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private static OutputAnalyzer execJava(String... args) throws IOException {
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(args);
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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log("[STDERR]\n" + output.getStderr());
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log("[STDOUT]\n" + output.getStdout());
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return output;
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}
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}
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