271 lines
8.5 KiB
Java
271 lines
8.5 KiB
Java
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/*
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* Copyright (C) 2007 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.ddm;
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import org.apache.harmony.dalvik.ddmc.Chunk;
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import org.apache.harmony.dalvik.ddmc.ChunkHandler;
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import org.apache.harmony.dalvik.ddmc.DdmServer;
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import org.apache.harmony.dalvik.ddmc.DdmVmInternal;
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import android.os.Debug;
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import android.util.Config;
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import android.util.Log;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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/**
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* Handle native and virtual heap requests.
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*/
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public class DdmHandleHeap extends ChunkHandler {
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public static final int CHUNK_HPIF = type("HPIF");
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public static final int CHUNK_HPSG = type("HPSG");
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public static final int CHUNK_HPDU = type("HPDU");
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public static final int CHUNK_HPDS = type("HPDS");
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public static final int CHUNK_NHSG = type("NHSG");
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public static final int CHUNK_HPGC = type("HPGC");
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public static final int CHUNK_REAE = type("REAE");
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public static final int CHUNK_REAQ = type("REAQ");
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public static final int CHUNK_REAL = type("REAL");
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private static DdmHandleHeap mInstance = new DdmHandleHeap();
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/* singleton, do not instantiate */
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private DdmHandleHeap() {}
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/**
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* Register for the messages we're interested in.
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*/
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public static void register() {
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DdmServer.registerHandler(CHUNK_HPIF, mInstance);
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DdmServer.registerHandler(CHUNK_HPSG, mInstance);
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DdmServer.registerHandler(CHUNK_HPDU, mInstance);
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DdmServer.registerHandler(CHUNK_HPDS, mInstance);
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DdmServer.registerHandler(CHUNK_NHSG, mInstance);
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DdmServer.registerHandler(CHUNK_HPGC, mInstance);
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DdmServer.registerHandler(CHUNK_REAE, mInstance);
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DdmServer.registerHandler(CHUNK_REAQ, mInstance);
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DdmServer.registerHandler(CHUNK_REAL, mInstance);
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}
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/**
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* Called when the DDM server connects. The handler is allowed to
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* send messages to the server.
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*/
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public void connected() {}
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/**
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* Called when the DDM server disconnects. Can be used to disable
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* periodic transmissions or clean up saved state.
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*/
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public void disconnected() {}
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/**
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* Handle a chunk of data.
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*/
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public Chunk handleChunk(Chunk request) {
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if (Config.LOGV)
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Log.v("ddm-heap", "Handling " + name(request.type) + " chunk");
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int type = request.type;
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if (type == CHUNK_HPIF) {
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return handleHPIF(request);
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} else if (type == CHUNK_HPSG) {
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return handleHPSGNHSG(request, false);
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} else if (type == CHUNK_HPDU) {
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return handleHPDU(request);
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} else if (type == CHUNK_HPDS) {
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return handleHPDS(request);
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} else if (type == CHUNK_NHSG) {
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return handleHPSGNHSG(request, true);
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} else if (type == CHUNK_HPGC) {
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return handleHPGC(request);
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} else if (type == CHUNK_REAE) {
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return handleREAE(request);
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} else if (type == CHUNK_REAQ) {
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return handleREAQ(request);
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} else if (type == CHUNK_REAL) {
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return handleREAL(request);
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} else {
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throw new RuntimeException("Unknown packet "
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+ ChunkHandler.name(type));
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}
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}
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/*
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* Handle a "HeaP InFo" request.
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*/
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private Chunk handleHPIF(Chunk request) {
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ByteBuffer in = wrapChunk(request);
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int when = in.get();
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if (Config.LOGV)
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Log.v("ddm-heap", "Heap segment enable: when=" + when);
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boolean ok = DdmVmInternal.heapInfoNotify(when);
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if (!ok) {
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return createFailChunk(1, "Unsupported HPIF what");
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} else {
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return null; // empty response
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}
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}
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/*
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* Handle a "HeaP SeGment" or "Native Heap SeGment" request.
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*/
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private Chunk handleHPSGNHSG(Chunk request, boolean isNative) {
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ByteBuffer in = wrapChunk(request);
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int when = in.get();
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int what = in.get();
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if (Config.LOGV)
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Log.v("ddm-heap", "Heap segment enable: when=" + when
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+ ", what=" + what + ", isNative=" + isNative);
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boolean ok = DdmVmInternal.heapSegmentNotify(when, what, isNative);
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if (!ok) {
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return createFailChunk(1, "Unsupported HPSG what/when");
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} else {
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// TODO: if "when" is non-zero and we want to see a dump
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// right away, initiate a GC.
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return null; // empty response
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}
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}
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/*
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* Handle a "HeaP DUmp" request.
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*
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* This currently just returns a result code. We could pull up
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* the entire contents of the file and return them, but hprof dump
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* files can be a few megabytes.
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*/
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private Chunk handleHPDU(Chunk request) {
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ByteBuffer in = wrapChunk(request);
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byte result;
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/* get the filename for the output file */
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int len = in.getInt();
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String fileName = getString(in, len);
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if (Config.LOGD)
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Log.d("ddm-heap", "Heap dump: file='" + fileName + "'");
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try {
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Debug.dumpHprofData(fileName);
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result = 0;
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} catch (UnsupportedOperationException uoe) {
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Log.w("ddm-heap", "hprof dumps not supported in this VM");
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result = -1;
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} catch (IOException ioe) {
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result = -1;
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} catch (RuntimeException re) {
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result = -1;
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}
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/* create a non-empty reply so the handler fires on completion */
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byte[] reply = { result };
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return new Chunk(CHUNK_HPDU, reply, 0, reply.length);
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}
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/*
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* Handle a "HeaP Dump Streaming" request.
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*
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* This tells the VM to create a heap dump and send it directly to
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* DDMS. The dumps are large enough that we don't want to copy the
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* data into a byte[] and send it from here.
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*/
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private Chunk handleHPDS(Chunk request) {
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ByteBuffer in = wrapChunk(request);
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byte result;
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/* get the filename for the output file */
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if (Config.LOGD)
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Log.d("ddm-heap", "Heap dump: [DDMS]");
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String failMsg = null;
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try {
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Debug.dumpHprofDataDdms();
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} catch (UnsupportedOperationException uoe) {
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failMsg = "hprof dumps not supported in this VM";
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} catch (RuntimeException re) {
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failMsg = "Exception: " + re.getMessage();
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}
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if (failMsg != null) {
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Log.w("ddm-heap", failMsg);
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return createFailChunk(1, failMsg);
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} else {
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return null;
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}
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}
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/*
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* Handle a "HeaP Garbage Collection" request.
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*/
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private Chunk handleHPGC(Chunk request) {
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//ByteBuffer in = wrapChunk(request);
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if (Config.LOGD)
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Log.d("ddm-heap", "Heap GC request");
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System.gc();
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return null; // empty response
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}
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/*
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* Handle a "REcent Allocation Enable" request.
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*/
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private Chunk handleREAE(Chunk request) {
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ByteBuffer in = wrapChunk(request);
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boolean enable;
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enable = (in.get() != 0);
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if (Config.LOGD)
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Log.d("ddm-heap", "Recent allocation enable request: " + enable);
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DdmVmInternal.enableRecentAllocations(enable);
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return null; // empty response
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}
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/*
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* Handle a "REcent Allocation Query" request.
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*/
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private Chunk handleREAQ(Chunk request) {
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//ByteBuffer in = wrapChunk(request);
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byte[] reply = new byte[1];
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reply[0] = DdmVmInternal.getRecentAllocationStatus() ? (byte)1 :(byte)0;
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return new Chunk(CHUNK_REAQ, reply, 0, reply.length);
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}
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/*
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* Handle a "REcent ALlocations" request.
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*/
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private Chunk handleREAL(Chunk request) {
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//ByteBuffer in = wrapChunk(request);
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if (Config.LOGD)
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Log.d("ddm-heap", "Recent allocations request");
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/* generate the reply in a ready-to-go format */
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byte[] reply = DdmVmInternal.getRecentAllocations();
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return new Chunk(CHUNK_REAL, reply, 0, reply.length);
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}
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}
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