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/*
* Copyright (c) 2000, 2020, 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/stack017.
* VM testbase keywords: [stress, diehard, stack, nonconcurrent]
* VM testbase readme:
* DESCRIPTION
* The test invokes infinitely recursive method from within stack
* overflow handler -- repeatedly multiple times, and in multiple
* threads.
* The test is deemed passed, if VM have not crashed, and
* if exception other than due to stack overflow was not
* thrown.
* COMMENTS
* This test crashes HS versions 2.0, 1.3, and 1.4 on both
* Solaris and Win32 platforms.
* See the bug:
* 4366625 (P4/S4) multiple stack overflow causes HS crash
*
* @requires (vm.opt.DeoptimizeALot != true & vm.compMode != "Xcomp" & vm.pageSize == 4096)
* @run main/othervm/timeout=900 -Xss220K Stack017
*/
public class Stack017 extends Thread {
private final static int THREADS = 10;
private final static int CYCLES = 10;
private final static int PROBES = 100;
public static void main(String[] args) {
Stack017 test = new Stack017();
test.doRun();
}
private static int depthToTry;
private void doRun() {
//
// Measure recursive depth before stack overflow:
//
try {
recurse(0);
} catch (StackOverflowError | OutOfMemoryError err) {
}
System.out.println("Maximal recursion depth: " + maxDepth);
depthToTry = maxDepth;
//
// Run the tested threads:
//
Stack017 threads[] = new Stack017[THREADS];
for (int i = 0; i < threads.length; i++) {
threads[i] = new Stack017();
threads[i].setName("Thread: " + (i + 1) + "/" + THREADS);
threads[i].start();
}
for (int i = 0; i < threads.length; i++) {
if (threads[i].isAlive()) {
try {
threads[i].join();
} catch (InterruptedException exception) {
throw new RuntimeException(exception);
}
}
}
//
// Check if unexpected exceptions were thrown:
//
for (int i = 0; i < threads.length; i++) {
if (threads[i].thrown != null) {
threads[i].thrown.printStackTrace();
throw new RuntimeException("Exception in the thread " + threads[i], threads[i].thrown);
}
}
}
private int maxDepth = 0;
private void recurse(int depth) {
maxDepth = depth;
recurse(depth + 1);
}
private void trickyRecurse(int depth) {
try {
maxDepth = depth;
trickyRecurse(depth + 1);
} catch (StackOverflowError | OutOfMemoryError error) {
//
// Stack problem caught: provoke it again,
// if current stack is enough deep:
//
if (depth < depthToTry - PROBES)
throw error;
recurse(depth + 1);
}
}
private Throwable thrown = null;
public void run() {
String threadName = Thread.currentThread().getName();
for (int i = 1; i <= CYCLES; i++)
try {
System.out.println(threadName + ", iteration: " + i + "/" + CYCLES);
trickyRecurse(0);
throw new Exception(
"TEST_BUG: stack overflow was expected!");
} catch (StackOverflowError | OutOfMemoryError err) {
// It's OK
} catch (Throwable throwable) {
// It isn't OK!
thrown = throwable;
break;
}
}
}
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