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/*
* Copyright (c) 2005, 2024, 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.
*/
import java.nio.file.Path;
import bootreporter.*;
import jdk.test.lib.helpers.ClassFileInstaller;
import jdk.test.lib.process.OutputAnalyzer;
import jdk.test.lib.process.ProcessTools;
/*
* @test
* @bug 6263319 8334167
* @summary test setNativeMethodPrefix
* @requires ((vm.opt.StartFlightRecording == null) | (vm.opt.StartFlightRecording == false)) & ((vm.opt.FlightRecorder == null) | (vm.opt.FlightRecorder == false))
* @modules java.instrument
* @library /test/lib
* @build bootreporter.StringIdCallback bootreporter.StringIdCallbackReporter
* asmlib.Instrumentor NativeMethodPrefixAgent
* @run main/native NativeMethodPrefixApp roleDriver
*/
public class NativeMethodPrefixApp implements StringIdCallback {
// we expect this native method, which is part of this test's application,
// to be instrumented and invoked
static String goldenNativeMethodName = "fooBarNativeMethod";
static boolean[] gotIt = {false, false, false};
private static final String testLibraryPath = System.getProperty("test.nativepath");
public static void main(String[] args) throws Exception {
if (args.length == 1) {
if (!"roleDriver".equals(args[0])) {
throw new Exception("unexpected program argument: " + args[0]);
}
// launch the NativeMethodPrefixApp java process after creating the necessary
// infrastructure
System.out.println("creating agent jar");
final Path agentJar = createAgentJar();
System.out.println("launching app, with javaagent jar: " + agentJar);
launchApp(agentJar);
} else {
System.err.println("running app");
System.loadLibrary("NativeMethodPrefix"); // load the native library
new NativeMethodPrefixApp().run();
}
}
private static Path createAgentJar() throws Exception {
final Path agentJar = Path.of("NativeMethodPrefixAgent.jar");
final String manifest = """
Manifest-Version: 1.0
Premain-Class: NativeMethodPrefixAgent
Can-Retransform-Classes: true
Can-Set-Native-Method-Prefix: true
""";
System.out.println("Manifest is:\n" + manifest);
// create the agent jar
ClassFileInstaller.writeJar(agentJar.getFileName().toString(),
ClassFileInstaller.Manifest.fromString(manifest),
"NativeMethodPrefixAgent",
"asmlib.Instrumentor");
return agentJar;
}
private static void launchApp(final Path agentJar) throws Exception {
final OutputAnalyzer oa = ProcessTools.executeTestJava(
"-javaagent:" + agentJar.toString(),
"-Djava.library.path=" + testLibraryPath,
NativeMethodPrefixApp.class.getName());
oa.shouldHaveExitValue(0);
// make available stdout/stderr in the logs, even in case of successful completion
oa.reportDiagnosticSummary();
}
private void run() throws Exception {
StringIdCallbackReporter.registerCallback(this);
System.err.println("start");
final long val = new Dummy().callSomeNativeMethod();
if (val != 42) {
throw new RuntimeException("unexpected return value " + val
+ " from native method, expected 42");
}
NativeMethodPrefixAgent.checkErrors();
for (int i = 0; i < gotIt.length; ++i) {
if (!gotIt[i]) {
throw new Exception("ERROR: Missing callback for transform " + i);
}
}
}
@Override
public void tracker(String name, int id) {
if (name.endsWith(goldenNativeMethodName)) {
System.err.println("Tracked #" + id + ": MATCHED -- " + name);
gotIt[id] = true;
} else {
System.err.println("Tracked #" + id + ": " + name);
}
}
private static class Dummy {
private long callSomeNativeMethod() {
return fooBarNativeMethod();
}
private native long fooBarNativeMethod();
}
}
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