1 /*
   2  * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 #include <stdio.h>
  25 
  26 #include "jni.h"
  27 
  28 /*
  29  * We will replace:
  30  *   java/lang/Thread.java:    public static native void yield();
  31  *
  32  * as it is simple and innocuous.
  33  */
  34 static void myYield(JNIEnv* env, jclass cls) {
  35   printf("myYield executed\n");
  36 }
  37 
  38 
  39 JNIEXPORT void JNICALL
  40 Java_TestRegisterNativesWarning_test
  41 (JNIEnv *env, jclass cls, jclass jlThread) {
  42   JNINativeMethod nativeMethods[] = {
  43     {
  44       (char*) "yield",  // name
  45       (char*) "()V",    // sig
  46       (void*) myYield   // native method ptr
  47     }
  48   };
  49   (*env)->RegisterNatives(env, jlThread, nativeMethods, 1);
  50 }