engineering/java-topology
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

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

Browse source 
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
70422 changed files with 17213626 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

90
test/jdk/java/util/concurrent/ThreadPoolExecutor/ThreadRestarts.java Normal file
View file

@ -0,0 +1,90 @@
/*
* 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.
*/
/*
* This file is available under and governed by the GNU General Public
* License version 2 only, as published by the Free Software Foundation.
* However, the following notice accompanied the original version of this
* file:
*
* Written by Martin Buchholz and Jason Mehrens with assistance from
* members of JCP JSR-166 Expert Group and released to the public
* domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
*/
/*
* @test
* @summary Only one thread should be created when a thread needs to
* be kept alive to service a delayed task waiting in the queue.
* @library /test/lib
*/
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicLong;
import jdk.test.lib.Utils;
public class ThreadRestarts {
static final long LONG_DELAY_MS = Utils.adjustTimeout(10_000);
static final long FAR_FUTURE_MS = 10 * LONG_DELAY_MS;
public static void main(String[] args) throws Exception {
test(false);
test(true);
}
private static void test(boolean allowTimeout) throws Exception {
CountingThreadFactory ctf = new CountingThreadFactory();
ScheduledThreadPoolExecutor stpe
= new ScheduledThreadPoolExecutor(10, ctf);
try {
// schedule a dummy task in the "far future"
Runnable nop = new Runnable() { public void run() {}};
stpe.schedule(nop, FAR_FUTURE_MS, MILLISECONDS);
stpe.setKeepAliveTime(1L, MILLISECONDS);
stpe.allowCoreThreadTimeOut(allowTimeout);
MILLISECONDS.sleep(12L);
} finally {
stpe.shutdownNow();
if (!stpe.awaitTermination(LONG_DELAY_MS, MILLISECONDS))
throw new AssertionError("timed out");
}
if (ctf.count.get() > 1)
throw new AssertionError(
String.format("%d threads created, 1 expected",
ctf.count.get()));
}
static class CountingThreadFactory implements ThreadFactory {
final AtomicLong count = new AtomicLong(0L);
public Thread newThread(Runnable r) {
count.getAndIncrement();
Thread t = new Thread(r);
t.setDaemon(true);
return t;
}
}
}