1 /*
2 * Copyright (C) 2020 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "jni.h"
18
19 #include <cstdint>
20 #include <stdio.h>
21 #include <unistd.h>
22
23 namespace art {
24
25 static int nativeObj;
26
BadNativeFinalizer(void * p)27 static void BadNativeFinalizer(void *p) {
28 if (p != &nativeObj) {
29 printf("Finalizer was passed unexpected argument: %p, not %p\n", p, &nativeObj);
30 }
31 printf("Native finalizer looping\n");
32 volatile bool always_true = true;
33 while (always_true) { sleep(1); }
34 }
35
Java_Main_getBadFreeFunction(JNIEnv *,jclass)36 extern "C" JNIEXPORT jlong JNICALL Java_Main_getBadFreeFunction(JNIEnv*, jclass) {
37 printf("Returning bad finalizer: %p\n", &BadNativeFinalizer); // Delete for comparison.
38 return reinterpret_cast<uintptr_t>(&BadNativeFinalizer);
39 }
40
Java_Main_getNativeObj(JNIEnv *,jclass)41 extern "C" JNIEXPORT jlong JNICALL Java_Main_getNativeObj(JNIEnv*, jclass) {
42 printf("Returning placeholder object: %p\n", &nativeObj);
43 return reinterpret_cast<uintptr_t>(&nativeObj);
44 }
45
46 } // namespace art
47