1/* Copyright (C) 2017 The Android Open Source Project
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This file implements interfaces from the file jvmti.h. This implementation
5 * is licensed under the same terms as the file jvmti.h.  The
6 * copyright and license information for the file jvmti.h follows.
7 *
8 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
9 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
10 *
11 * This code is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 only, as
13 * published by the Free Software Foundation.  Oracle designates this
14 * particular file as subject to the "Classpath" exception as provided
15 * by Oracle in the LICENSE file that accompanied this code.
16 *
17 * This code is distributed in the hope that it will be useful, but WITHOUT
18 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
19 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
20 * version 2 for more details (a copy is included in the LICENSE file that
21 * accompanied this code).
22 *
23 * You should have received a copy of the GNU General Public License version
24 * 2 along with this work; if not, write to the Free Software Foundation,
25 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
26 *
27 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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30 */
31
32#ifndef ART_OPENJDKJVMTI_TI_JNI_H_
33#define ART_OPENJDKJVMTI_TI_JNI_H_
34
35#include "jni.h"
36#include "jvmti.h"
37
38namespace openjdkjvmti {
39
40// Note: Currently, JNI function table changes are sensitive to the order of operations wrt/
41//       CheckJNI. If an agent sets the function table, and a program than late-enables CheckJNI,
42//       CheckJNI will not be working (as the agent will forward to the non-CheckJNI table).
43//
44//       This behavior results from our usage of the function table to avoid a check of the
45//       CheckJNI flag. A future implementation may install on loading of this plugin an
46//       intermediate function table that explicitly checks the flag, so that switching CheckJNI
47//       is transparently handled.
48
49class JNIUtil {
50 public:
51  static jvmtiError SetJNIFunctionTable(jvmtiEnv* env, const jniNativeInterface* function_table);
52
53  static jvmtiError GetJNIFunctionTable(jvmtiEnv* env, jniNativeInterface** function_table);
54};
55
56}  // namespace openjdkjvmti
57
58#endif  // ART_OPENJDKJVMTI_TI_JNI_H_
59