2 * Copyright (C) 2007 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 package dalvik.system;
20 * Provides a limited interface to the Dalvik VM stack. This class is mostly
21 * used for implementing security checks.
23 * @deprecated this is an internal Dalvik class that is not appropriate for
24 * general use. It will be removed from the public API in a future release.
26 public final class VMStack {
28 * Returns the defining class loader of the caller's caller.
30 * @return the requested class loader, or {@code null} if this is the
31 * bootstrap class loader.
33 native public static ClassLoader getCallingClassLoader();
36 * Returns the defining class loader of the caller's caller's caller.
38 * @return the requested class loader, or {@code null} if this is the
39 * bootstrap class loader.
41 native public static ClassLoader getCallingClassLoader2();
44 * Returns the class of the caller's caller's caller.
47 * @return the requested class, or {@code null}.
49 native public static Class<?> getStackClass2();
52 * Creates an array of classes from the methods at the top of the stack.
53 * We continue until we reach the bottom of the stack or exceed the
54 * specified maximum depth. If stopAtPrivileged is set, the last
55 * element of the array will be the caller of the most-recent privileged
58 * The topmost stack frame (this method) and the one above that (the
59 * caller) are excluded from the array. Frames with java.lang.reflect
60 * classes are skipped over.
62 * The classes in the array are the defining classes of the methods.
64 * This is expected to be identical to Harmony's VMStack.getClasses.
67 * maximum number of classes to return, or -1 for all
68 * @param stopAtPrivileged
69 * stop when a privileged frame is reached
70 * @return an array with classes for the most-recent methods on the stack
72 native public static Class<?>[] getClasses(int maxDepth,
73 boolean stopAtPrivileged);
76 * Retrieves the stack trace from the specified thread.
80 * @return an array of stack trace elements, or null if the thread
81 * doesn't have a stack trace (e.g. because it exited)
83 native public static StackTraceElement[] getThreadStackTrace(Thread t);