79 lines
3.3 KiB
Java
79 lines
3.3 KiB
Java
/*
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* Copyright (c) 2022, 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 TestPosixSig.java
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* @bug 8292559
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* @summary test that -XX:+CheckJNICalss displays changed signal handlers.
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* @requires os.family != "windows"
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* @library /test/lib
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* @run driver TestPosixSig
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*/
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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public class TestPosixSig {
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private static native void changeSigActionFor(int val);
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public static void main(String[] args) throws Throwable {
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// Get the library path property.
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String libpath = System.getProperty("java.library.path");
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if (args.length == 0) {
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// Create a new java process for the TestPsig Java/JNI test.
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// We run the VM in interpreted mode, because the JIT might mark
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// a Java method as not-entrant, which means turning the first instruction
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// into an illegal one. Calling such a method after establishing
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// the new SIGILL signal handler with TestPosixSig.changeSigActionFor(4)
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// below, but before the JNI checker noted and reacted on this signal handler
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// modification, the JVM may crash or hang in an endless loop, where the
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// illegal instruction will be continously executed, raising SIGILL, and
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// the signal handler will return to the illegal instruction again...
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ProcessBuilder pb = ProcessTools.createLimitedTestJavaProcessBuilder(
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"-XX:+CheckJNICalls",
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"-Xint",
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"-Djava.library.path=" + libpath + ":.",
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"TestPosixSig", "dummy");
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// Start the process and check the output.
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OutputAnalyzer output = new OutputAnalyzer(pb.start());
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String outputString = output.getOutput();
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if (!outputString.contains("Warning: SIGILL handler modified!") ||
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!outputString.contains("Warning: SIGFPE handler modified!")) {
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System.out.println("output: " + outputString);
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throw new RuntimeException("Test failed, missing signal Warning");
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}
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output.shouldHaveExitValue(0);
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} else {
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System.loadLibrary("TestPsig");
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TestPosixSig.changeSigActionFor(8); // SIGFPE
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TestPosixSig.changeSigActionFor(4); // SIGILL
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Thread.sleep(600);
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}
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}
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}
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