hotspot/test/runtime/jni/CallWithJNIWeak/CallWithJNIWeak.java
author kbarrett
Wed, 15 Feb 2017 22:19:13 -0500
changeset 43964 2f5e556a6037
permissions -rw-r--r--
8166188: G1 Needs pre barrier on dereference of weak JNI handles Summary: Add low tag to jweaks and G1 barrier for jweak loads. Reviewed-by: mgerdin, mdoerr, pliden, dlong, dcubed, coleenp, aph, tschatzl Contributed-by: kim.barrett@oracle.com, martin.doerr@sap.com, volker.simonis@sap.com

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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");
  }

  static native Object doStuff(Object o);
  static native Object doWithWeak(Object o);

  public static void main(String[] args) {
    Object o = doStuff(Thread.currentThread());
    System.out.println(o);
  }
}