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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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97
test/hotspot/jtreg/compiler/c2/InterruptedTest.java Normal file
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/*
* Copyright (c) 2008, 2016, 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 6772683
* @summary Thread.isInterrupted() fails to return true on multiprocessor PC
*
* @run main/othervm compiler.c2.InterruptedTest 100
*/
package compiler.c2;
public class InterruptedTest {
public static void main(String[] args) throws Exception {
/* The value of the threshold determines for how many seconds
* the main thread must wait for the worker thread. On highly
* loaded systems it can take a while until the worker thread
* obtains CPU time and is able to check if it was interrupted
* by the main thread. The higher the threshold the likelier
* the worker thread can check if it was interrupted (that is
* required for successul test execution).
*/
int threshold = 100;
if (args.length != 1) {
System.out.println("Incorrect number of arguments");
System.exit(1);
}
try {
threshold = Integer.parseInt(args[0]);
} catch (NumberFormatException e) {
System.out.println("Invalid argument format");
System.exit(1);
}
if (threshold < 1) {
System.out.println("Threshold must be at least 1");
System.exit(1);
}
Thread workerThread = new Thread("worker") {
public void run() {
System.out.println("Worker thread: running...");
while (!Thread.currentThread().isInterrupted()) {
}
System.out.println("Worker thread: bye");
}
};
System.out.println("Main thread: starts a worker thread...");
workerThread.start();
System.out.println("Main thread: waits 5 seconds after starting the worker thread");
workerThread.join(5000); // Wait 5 sec to let run() method to be compiled
int ntries = 0;
while (workerThread.isAlive() && ntries < threshold) {
System.out.println("Main thread: interrupts the worker thread...");
workerThread.interrupt();
if (workerThread.isInterrupted()) {
System.out.println("Main thread: worker thread is interrupted");
}
ntries++;
System.out.println("Main thread: waits 1 second for the worker thread to die...");
workerThread.join(1000); // Wait 1 sec and try again
}
if (ntries == threshold) {
System.out.println("Main thread: the worker thread did not die after " +
ntries + " seconds have elapsed");
System.exit(97);
}
System.out.println("Main thread: bye");
}
}