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70 changes: 70 additions & 0 deletions
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test/jdk/java/lang/Thread/jni/AttachCurrentThread/AttachTest.java
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/* | ||
* Copyright (c) 2022, 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 8287982 | ||
* @summary Test native threads attaching to the VM with JNI AttachCurrentThread | ||
* @requires (os.family == "linux" | os.family == "mac") | ||
* @library /test/lib | ||
* @compile ExplicitAttach.java | ||
* @run main AttachTest ExplicitAttach 1 | ||
* @run main AttachTest ExplicitAttach 2 | ||
* @run main AttachTest ExplicitAttach 4 | ||
*/ | ||
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/** | ||
* @test | ||
* @summary Test native threads attaching implicitly to the VM by means of an upcall | ||
* @requires (os.family == "linux" | os.family == "mac") & (sun.arch.data.model == "64") | ||
* @library /test/lib | ||
* @compile --enable-preview -source ${jdk.version} ImplicitAttach.java | ||
* @run main AttachTest --enable-preview --enable-native-access=ALL-UNNAMED ImplicitAttach 1 | ||
* @run main AttachTest --enable-preview --enable-native-access=ALL-UNNAMED ImplicitAttach 2 | ||
* @run main AttachTest --enable-preview --enable-native-access=ALL-UNNAMED ImplicitAttach 4 | ||
*/ | ||
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import java.util.stream.Stream; | ||
import jdk.test.lib.process.ProcessTools; | ||
import jdk.test.lib.process.OutputAnalyzer; | ||
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public class AttachTest { | ||
static final String TEST_CLASSES = System.getProperty("test.classes"); | ||
static final String JAVA_LIBRARY_PATH = System.getProperty("java.library.path"); | ||
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public static void main(String[] args) throws Exception { | ||
// prepend -cp ${test.classes} -Djava.library.path=${java.library.path} | ||
String[] opts = Stream.concat(Stream.of( | ||
"-cp", TEST_CLASSES, | ||
"-Djava.library.path=" + JAVA_LIBRARY_PATH), | ||
Stream.of(args)) | ||
.toArray(String[]::new); | ||
OutputAnalyzer outputAnalyzer = ProcessTools | ||
.executeTestJava(opts) | ||
.outputTo(System.out) | ||
.errorTo(System.out); | ||
int exitValue = outputAnalyzer.getExitValue(); | ||
if (exitValue != 0) | ||
throw new RuntimeException("Test failed"); | ||
} | ||
} |
62 changes: 62 additions & 0 deletions
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test/jdk/java/lang/Thread/jni/AttachCurrentThread/ExplicitAttach.java
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/* | ||
* Copyright (c) 2022, 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. | ||
*/ | ||
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import java.util.concurrent.CountDownLatch; | ||
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/** | ||
* Test native threads attaching to the VM with JNI AttachCurrentThread. | ||
*/ | ||
public class ExplicitAttach { | ||
private static volatile CountDownLatch latch; | ||
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public static void main(String[] args) throws Exception { | ||
int threadCount; | ||
if (args.length > 0) { | ||
threadCount = Integer.parseInt(args[0]); | ||
} else { | ||
threadCount = 2; | ||
} | ||
latch = new CountDownLatch(threadCount); | ||
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// start the threads and wait for the threads to call home | ||
startThreads(threadCount); | ||
latch.await(); | ||
} | ||
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/** | ||
* Invoked by attached threads. | ||
*/ | ||
private static void callback() { | ||
System.out.println(Thread.currentThread()); | ||
latch.countDown(); | ||
} | ||
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/** | ||
* Start n native threads that attach to the VM and invoke callback. | ||
*/ | ||
private static native void startThreads(int n); | ||
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static { | ||
System.loadLibrary("ExplicitAttach"); | ||
} | ||
} |
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