xref: /external/apache-harmony/jdwp/src/test/java/org/apache/harmony/jpda/tests/jdwp/EventModifiers/ThreadOnlyModifierDebuggee.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.harmony.jpda.tests.jdwp.EventModifiers;

import org.apache.harmony.jpda.tests.share.JPDADebuggeeSynchronizer;
import org.apache.harmony.jpda.tests.share.SyncDebuggee;

/**
 * Debuggee for ThreadOnlyModifierTest.
 */
public class ThreadOnlyModifierDebuggee extends SyncDebuggee {
    static class TestException extends Exception {
    }

    static class TestClass {
        public void eventTestMethod() {
            System.out.println(
                    "ThreadOnlyModifierDebuggee.TestClass.eventTestMethod()");
        }
    }

    static class TestThread implements Runnable {
        private final TestClass obj;

        public TestThread(TestClass obj) {
            this.obj = obj;
        }

        @Override
        public void run() {
            obj.eventTestMethod();
            throwAndCatchException();
            readAndWriteField();
        }

        void readAndWriteField() {
            System.out
            .println(
                    "ThreadOnlyModifierDebuggee.TestThread.readAndWriteField()");
            watchedField = watchedField + 1;
        }

        private void throwAndCatchException() {
            try {
                throwException();
            } catch (TestException e) {
                // This should trigger a caught exception event here.
            }
        }

        void throwException() throws TestException {
            System.out.println(
                    "ThreadOnlyModifierDebuggee.TestThread.throwException()");
            throw new TestException();
        }
    }

    static Thread THREAD_ONLY;

    static int watchedField = 0;

    @Override
    public void run() {
        TestClass obj = new TestClass();
        new TestException();  // force class loading.

        logWriter.println("Create threads");
        Thread[] threads = new Thread[10];
        for (int i = 0; i < threads.length; ++i) {
            threads[i] = new Thread(new TestThread(obj));
            threads[i].setName("TestThread#" + i);
        }

        // Let's report events for the last thread only.
        THREAD_ONLY = threads[threads.length - 1];

        synchronizer.sendMessage(JPDADebuggeeSynchronizer.SGNL_READY);

        logWriter.println("ThreadOnlyModifierDebuggee started");

        // Wait for test setup.
        synchronizer.receiveMessage(JPDADebuggeeSynchronizer.SGNL_CONTINUE);

        // Run all threads.
        for (int i = 0; i < threads.length; ++i) {
            runThread(threads[i]);
        }

        logWriter.println("ThreadOnlyModifierDebuggee finished");
    }

    void runThread(Thread t) {
        String threadName = t.getName();
        logWriter.println("Thread " + threadName + " starts");
        t.start();
        try {
            logWriter.println("Wait for end of thread " + threadName);
            t.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        logWriter.println("Thread " + threadName + " ends");
    }

    public static void main(String[] args) {
        runDebuggee(ThreadOnlyModifierDebuggee.class);
    }

}