| /* |
| * Copyright (C) 2010 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.profiler; |
| |
| import java.util.Arrays; |
| |
| /** |
| * ThreadSampler implementation that only uses Thread.getStackTrace() |
| * and therefore is portable. |
| */ |
| class PortableThreadSampler implements ThreadSampler { |
| |
| private int depth; |
| |
| @Override public void setDepth(int depth) { |
| this.depth = depth; |
| } |
| |
| @Override public StackTraceElement[] getStackTrace(Thread thread) { |
| StackTraceElement[] stackFrames = thread.getStackTrace(); |
| if (stackFrames.length == 0) { |
| return null; |
| } |
| if (stackFrames.length > depth) { |
| stackFrames = Arrays.copyOfRange(stackFrames, 0, depth); |
| } |
| return stackFrames; |
| } |
| } |