/*
* 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 org.apache.harmony.dalvik.ddmc.DdmVmInternal;
import android.os.Debug;
import android.util.Log;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Handle native and virtual heap requests.
*/
public class DdmHandleHeap extends ChunkHandler {
public static final int CHUNK_HPIF = type("HPIF");
public static final int CHUNK_HPSG = type("HPSG");
public static final int CHUNK_HPDU = type("HPDU");
public static final int CHUNK_HPDS = type("HPDS");
public static final int CHUNK_NHSG = type("NHSG");
public static final int CHUNK_HPGC = type("HPGC");
public static final int CHUNK_REAE = type("REAE");
public static final int CHUNK_REAQ = type("REAQ");
public static final int CHUNK_REAL = type("REAL");
private static DdmHandleHeap mInstance = new DdmHandleHeap();
/* singleton, do not instantiate */
private DdmHandleHeap() {}
/**
* Register for the messages we're interested in.
*/
public static void register() {
DdmServer.registerHandler(CHUNK_HPIF, mInstance);
DdmServer.registerHandler(CHUNK_HPSG, mInstance);
DdmServer.registerHandler(CHUNK_HPDU, mInstance);
DdmServer.registerHandler(CHUNK_HPDS, mInstance);
DdmServer.registerHandler(CHUNK_NHSG, mInstance);
DdmServer.registerHandler(CHUNK_HPGC, mInstance);
DdmServer.registerHandler(CHUNK_REAE, mInstance);
DdmServer.registerHandler(CHUNK_REAQ, mInstance);
DdmServer.registerHandler(CHUNK_REAL, 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) {
if (false)
Log.v("ddm-heap", "Handling " + name(request.type) + " chunk");
int type = request.type;
if (type == CHUNK_HPIF) {
return handleHPIF(request);
} else if (type == CHUNK_HPSG) {
return handleHPSGNHSG(request, false);
} else if (type == CHUNK_HPDU) {
return handleHPDU(request);
} else if (type == CHUNK_HPDS) {
return handleHPDS(request);
} else if (type == CHUNK_NHSG) {
return handleHPSGNHSG(request, true);
} else if (type == CHUNK_HPGC) {
return handleHPGC(request);
} else if (type == CHUNK_REAE) {
return handleREAE(request);
} else if (type == CHUNK_REAQ) {
return handleREAQ(request);
} else if (type == CHUNK_REAL) {
return handleREAL(request);
} else {
throw new RuntimeException("Unknown packet "
+ ChunkHandler.name(type));
}
}
/*
* Handle a "HeaP InFo" request.
*/
private Chunk handleHPIF(Chunk request) {
ByteBuffer in = wrapChunk(request);
int when = in.get();
if (false)
Log.v("ddm-heap", "Heap segment enable: when=" + when);
boolean ok = DdmVmInternal.heapInfoNotify(when);
if (!ok) {
return createFailChunk(1, "Unsupported HPIF what");
} else {
return null; // empty response
}
}
/*
* Handle a "HeaP SeGment" or "Native Heap SeGment" request.
*/
private Chunk handleHPSGNHSG(Chunk request, boolean isNative) {
ByteBuffer in = wrapChunk(request);
int when = in.get();
int what = in.get();
if (false)
Log.v("ddm-heap", "Heap segment enable: when=" + when
+ ", what=" + what + ", isNative=" + isNative);
boolean ok = DdmVmInternal.heapSegmentNotify(when, what, isNative);
if (!ok) {
return createFailChunk(1, "Unsupported HPSG what/when");
} else {
// TODO: if "when" is non-zero and we want to see a dump
// right away, initiate a GC.
return null; // empty response
}
}
/*
* Handle a "HeaP DUmp" request.
*
* This currently just returns a result code. We could pull up
* the entire contents of the file and return them, but hprof dump
* files can be a few megabytes.
*/
private Chunk handleHPDU(Chunk request) {
ByteBuffer in = wrapChunk(request);
byte result;
/* get the filename for the output file */
int len = in.getInt();
String fileName = getString(in, len);
if (false)
Log.d("ddm-heap", "Heap dump: file='" + fileName + "'");
try {
Debug.dumpHprofData(fileName);
result = 0;
} catch (UnsupportedOperationException uoe) {
Log.w("ddm-heap", "hprof dumps not supported in this VM");
result = -1;
} catch (IOException ioe) {
result = -1;
} catch (RuntimeException re) {
result = -1;
}
/* create a non-empty reply so the handler fires on completion */
byte[] reply = { result };
return new Chunk(CHUNK_HPDU, reply, 0, reply.length);
}
/*
* Handle a "HeaP Dump Streaming" request.
*
* This tells the VM to create a heap dump and send it directly to
* DDMS. The dumps are large enough that we don't want to copy the
* data into a byte[] and send it from here.
*/
private Chunk handleHPDS(Chunk request) {
ByteBuffer in = wrapChunk(request);
byte result;
/* get the filename for the output file */
if (false)
Log.d("ddm-heap", "Heap dump: [DDMS]");
String failMsg = null;
try {
Debug.dumpHprofDataDdms();
} catch (UnsupportedOperationException uoe) {
failMsg = "hprof dumps not supported in this VM";
} catch (RuntimeException re) {
failMsg = "Exception: " + re.getMessage();
}
if (failMsg != null) {
Log.w("ddm-heap", failMsg);
return createFailChunk(1, failMsg);
} else {
return null;
}
}
/*
* Handle a "HeaP Garbage Collection" request.
*/
private Chunk handleHPGC(Chunk request) {
//ByteBuffer in = wrapChunk(request);
if (false)
Log.d("ddm-heap", "Heap GC request");
Runtime.getRuntime().gc();
return null; // empty response
}
/*
* Handle a "REcent Allocation Enable" request.
*/
private Chunk handleREAE(Chunk request) {
ByteBuffer in = wrapChunk(request);
boolean enable;
enable = (in.get() != 0);
if (false)
Log.d("ddm-heap", "Recent allocation enable request: " + enable);
DdmVmInternal.enableRecentAllocations(enable);
return null; // empty response
}
/*
* Handle a "REcent Allocation Query" request.
*/
private Chunk handleREAQ(Chunk request) {
//ByteBuffer in = wrapChunk(request);
byte[] reply = new byte[1];
reply[0] = DdmVmInternal.getRecentAllocationStatus() ? (byte)1 :(byte)0;
return new Chunk(CHUNK_REAQ, reply, 0, reply.length);
}
/*
* Handle a "REcent ALlocations" request.
*/
private Chunk handleREAL(Chunk request) {
//ByteBuffer in = wrapChunk(request);
if (false)
Log.d("ddm-heap", "Recent allocations request");
/* generate the reply in a ready-to-go format */
byte[] reply = DdmVmInternal.getRecentAllocations();
return new Chunk(CHUNK_REAL, reply, 0, reply.length);
}
}
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