1 /*

     2  * Copyright (c) 2017, 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 /*

    25  * Native support for ReturnJNIWeak test.

    26  */

    27 

    28 #include "jni.h"

    29 

    30 static jweak registered = NULL;

    31 

    32 JNIEXPORT void JNICALL

    33 Java_ReturnJNIWeak_registerObject(JNIEnv* env,

    34                                   jclass jclazz,

    35                                   jobject value) {

    36   // assert registered == NULL

    37   registered = (*env)->NewWeakGlobalRef(env, value);

    38 }

    39 

    40 JNIEXPORT void JNICALL

    41 Java_ReturnJNIWeak_unregisterObject(JNIEnv* env, jclass jclazz) {

    42   if (registered != NULL) {

    43     (*env)->DeleteWeakGlobalRef(env, registered);

    44     registered = NULL;

    45   }

    46 }

    47 

    48 JNIEXPORT jobject JNICALL

    49 Java_ReturnJNIWeak_getObject(JNIEnv* env, jclass jclazz) {

    50   // assert registered != NULL

    51   return registered;

    52 }