| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package dalvik.system; |
| |
| /** |
| * Provides a limited interface to the Dalvik VM stack. This class is mostly |
| * used for implementing security checks. |
| * |
| * @hide |
| */ |
| public final class VMStack { |
| /** |
| * Returns the defining class loader of the caller's caller. |
| * |
| * @return the requested class loader, or {@code null} if this is the |
| * bootstrap class loader. |
| */ |
| native public static ClassLoader getCallingClassLoader(); |
| |
| /** |
| * Returns the defining class loader of the caller's caller's caller. |
| * |
| * @return the requested class loader, or {@code null} if this is the |
| * bootstrap class loader. |
| */ |
| native public static ClassLoader getCallingClassLoader2(); |
| |
| /** |
| * Returns the class of the caller's caller's caller. |
| * |
| * @hide |
| * @return the requested class, or {@code null}. |
| */ |
| native public static Class<?> getStackClass2(); |
| |
| /** |
| * Creates an array of classes from the methods at the top of the stack. |
| * We continue until we reach the bottom of the stack or exceed the |
| * specified maximum depth. If stopAtPrivileged is set, the last |
| * element of the array will be the caller of the most-recent privileged |
| * method. |
| * <p> |
| * The topmost stack frame (this method) and the one above that (the |
| * caller) are excluded from the array. Frames with java.lang.reflect |
| * classes are skipped over. |
| * <p> |
| * The classes in the array are the defining classes of the methods. |
| * <p> |
| * This is expected to be identical to Harmony's VMStack.getClasses. |
| * |
| * @param maxDepth |
| * maximum number of classes to return, or -1 for all |
| * @param stopAtPrivileged |
| * stop when a privileged frame is reached |
| * @return an array with classes for the most-recent methods on the stack |
| */ |
| native public static Class<?>[] getClasses(int maxDepth, |
| boolean stopAtPrivileged); |
| |
| /** |
| * Retrieves the stack trace from the specified thread. |
| * |
| * @param t |
| * thread of interest |
| * @return an array of stack trace elements, or null if the thread |
| * doesn't have a stack trace (e.g. because it exited) |
| */ |
| native public static StackTraceElement[] getThreadStackTrace(Thread t); |
| } |
| |