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 #include <jni.h>

    25 #include <stdio.h>

    26 

    27 void reduceLocalCapacity(JNIEnv* env) {

    28     puts("reduceLocalCapacity: setting to 1");

    29     (*env)->EnsureLocalCapacity(env,1);

    30 }

    31 

    32 JNIEXPORT void JNICALL

    33 Java_TestCheckedEnsureLocalCapacity_ensureCapacity(JNIEnv *env,

    34                                                    jobject unused,

    35                                                    jobject target,

    36                                                    jint capacity,

    37                                                    jint copies) {

    38   int i;

    39   printf("ensureCapacity: setting to %d\n", capacity);

    40   (*env)->EnsureLocalCapacity(env, capacity); // set high

    41   reduceLocalCapacity(env);     // sets low

    42 

    43   printf("ensureCapacity: creating %d LocalRefs\n", copies);

    44   for (i = 0; i < copies; i++) {

    45     target = (*env)->NewLocalRef(env, target);

    46   }

    47 

    48   puts("ensureCapacity: done");

    49 }