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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * 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).
 *
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 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
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 */

/*
 * @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;
            }
    }
}