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/*
* 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 android.ddm;
import org.apache.harmony.dalvik.ddmc.Chunk;
import org.apache.harmony.dalvik.ddmc.ChunkHandler;
import org.apache.harmony.dalvik.ddmc.DdmServer;
import android.util.Log;
/**
* Handle thread-related traffic.
*/
public class DdmHandleNativeHeap extends ChunkHandler {
public static final int CHUNK_NHGT = type("NHGT");
private static DdmHandleNativeHeap mInstance = new DdmHandleNativeHeap();
/* singleton, do not instantiate */
private DdmHandleNativeHeap() {}
/**
* Register for the messages we're interested in.
*/
public static void register() {
DdmServer.registerHandler(CHUNK_NHGT, mInstance);
}
/**
* Called when the DDM server connects. The handler is allowed to
* send messages to the server.
*/
public void connected() {}
/**
* Called when the DDM server disconnects. Can be used to disable
* periodic transmissions or clean up saved state.
*/
public void disconnected() {}
/**
* Handle a chunk of data.
*/
public Chunk handleChunk(Chunk request) {
Log.i("ddm-nativeheap", "Handling " + name(request.type) + " chunk");
int type = request.type;
if (type == CHUNK_NHGT) {
return handleNHGT(request);
} else {
throw new RuntimeException("Unknown packet "
+ ChunkHandler.name(type));
}
}
/*
* Handle a "Native Heap GeT" request.
*/
private Chunk handleNHGT(Chunk request) {
//ByteBuffer in = wrapChunk(request);
byte[] data = getLeakInfo();
if (data != null) {
// wrap & return
Log.i("ddm-nativeheap", "Sending " + data.length + " bytes");
return new Chunk(ChunkHandler.type("NHGT"), data, 0, data.length);
} else {
// failed, return a failure error code and message
return createFailChunk(1, "Something went wrong");
}
}
private native byte[] getLeakInfo();
}
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