/*
* 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;
}
}