hotspot/test/runtime/jni/CallWithJNIWeak/CallWithJNIWeak.java

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/*
 * @test
 * @bug 8166188
 * @summary Test call of native function with JNI weak global ref.
 * @modules java.base
 * @run main/othervm/native CallWithJNIWeak
 */

public class CallWithJNIWeak {
    static {
        System.loadLibrary("CallWithJNIWeak");
    }

    private static native void testJNIFieldAccessors(CallWithJNIWeak o);

    // The field initializations must be kept in sync with the JNI code
    // which reads verifies the values of these fields.
    private int i = 1;
    private long j = 2;
    private boolean z = true;
    private char c = 'a';
    private short s = 3;
    private float f = 1.0f;
    private double d = 2.0;
    private Object l;

    private CallWithJNIWeak() {
        this.l = this;
    }

    private native void weakReceiverTest0();
    private void weakReceiverTest() {
        weakReceiverTest0();
    }

    private synchronized void synchonizedWeakReceiverTest() {
        this.notifyAll();
    }


    private static native void runTests(CallWithJNIWeak o);

    public static void main(String[] args) {
        CallWithJNIWeak w = new CallWithJNIWeak();
        for (int i = 0; i < 20000; i++) {
            runTests(w);
        }
    }
}