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