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/*
* Copyright (c) 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
#include <jni.h>
JNIEXPORT jboolean JNICALL
Java_TestCheckedReleaseCriticalArray_modifyArray(JNIEnv *env,
jclass clazz,
jintArray iarr) {
jboolean isCopy;
jint* arr = (jint *)(*env)->GetPrimitiveArrayCritical(env, iarr, &isCopy);
if (arr == NULL) {
(*env)->FatalError(env, "Unexpected NULL return from GetPrimitiveArrayCritical");
}
if (isCopy == JNI_FALSE) {
jint len = (*env)->GetArrayLength(env, iarr);
// make arbitrary changes to the array
int i;
for (i = 0; i < len; i++) {
arr[i] *= 2;
}
// write-back using JNI_COMMIT to test for memory leak
(*env)->ReleasePrimitiveArrayCritical(env, iarr, arr, JNI_COMMIT);
}
// we skip the test if the VM makes a copy - as it will definitely leak
return !isCopy;
}
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