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/*
* Copyright (c) 2000, 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.
*/
/*
* @test
* @key stress
*
* @summary converted from VM testbase nsk/stress/stack/stack002.
* VM testbase keywords: [stress, quick, stack, nonconcurrent]
* VM testbase readme:
* DESCRIPTION
* Provoke StackOverflowError by infinite recursion in Java method,
* intercept the exception and continue to invoke that method until
* the test exceeds timeout, or until Java VM crashes.
* COMMENTS
* I believe that the test causes HS crashes due to the following bug:
* 4330318 (P2/S2) NSK test fails as An irrecoverable stack overflow
* See also bugs (lots of bugs!):
* Evaluated:
* 4217960 [native stack overflow bug] reflection test causes crash
* Accepted:
* 4285716 native stack overflow causes crash on Solaris
* 4281578 Second stack overflow crashes HotSpot VM
* Closed (duplicate):
* 4027933 Native stack overflows not detected or handled correctly
* 4134353 (hpi) sysThreadCheckStack is a no-op on win32
* 4185411 Various crashes when using recursive reflection.
* 4167055 infinite recursion in FindClass
* 4222359 Infinite recursion crashes jvm
* Closed (will not fix):
* 4231968 StackOverflowError in a native method causes Segmentation Fault
* 4254634 println() while catching StackOverflowError causes hotspot VM crash
* 4302288 the second stack overflow causes Classic VM to exit on win32
*
* @requires vm.opt.DeoptimizeALot != true
* @run main/othervm/timeout=900 Stack002
*/
public class Stack002 {
static final long timeout = 10000; // 10 seconds
public static void main(String[] args) {
Tester tester = new Tester();
Timer timer = new Timer(tester);
timer.start();
tester.start();
while (timer.isAlive())
try {
timer.join();
} catch (InterruptedException e) {
e.printStackTrace();
throw new RuntimeException(e);
}
// if (tester.isAlive())
// return 2;
System.out.println("Maximal depth: " + tester.maxdepth);
}
private static class Tester extends Thread {
int maxdepth;
public Tester() {
maxdepth = 0;
}
public void run() {
recurse(0);
}
void recurse(int depth) {
maxdepth = depth;
try {
recurse(depth + 1);
// } catch (StackOverflowError e) {
//
// OutOfMemoryError is also eligible to indicate stack overflow:
//
} catch (StackOverflowError | OutOfMemoryError e) {
/***
*** Originally, I supposed that VM crashes because of unexpected
*** native stack overflow (println() invokes native method).
*** However, I found that HS 1.3 and HS 2.0 crash even on
*** invocation of Java (not native) method.
***
out.println("StackOverflowError, depth=" + depth);
***/
recurse(depth + 1);
}
}
}
private static class Timer extends Thread {
private Tester tester;
public Timer(Tester tester) {
this.tester = tester;
}
public void run() {
long started;
started = System.currentTimeMillis();
while (System.currentTimeMillis() - started < timeout)
; /***
*** The test hangs on JDK 1.2.2 Classic VM if sleep() is invoked.
***
try {
this.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace(tester.out);
return;
};
***/
tester.stop();
}
}
}
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