test/004-SignalTest/src/Main.java

/*
 * Copyright (C) 2014 The Android Open Source Project
 *
 * Licensed 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.
 */

public class Main {
    private static native void initSignalTest();
    private static native void terminateSignalTest();
    private static native int testSignal();

    private static void stackOverflow() {
        stackOverflow();
    }

    public static void main(String[] args) {
        System.loadLibrary(args[0]);
        System.out.println("init signal test");
        initSignalTest();
        try {
            Object o = null;
            int hash = o.hashCode();

            // Should never get here.
            System.out.println("hash: " + hash);
            throw new AssertionError();
        } catch (NullPointerException e) {
            System.out.println("Caught NullPointerException");
        }
        try {
            stackOverflow();
            // Should never get here.
            throw new AssertionError();
        } catch (StackOverflowError e) {
            System.out.println("Caught StackOverflowError");
        }

        // Test that a signal in native code works.  This will return
        // the value 1234 if the signal is caught.
        int x = testSignal();
        if (x != 1234) {
            throw new AssertionError();
        }

        terminateSignalTest();
        System.out.println("Signal test OK");
    }
}