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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 android.os.DdmSyncState;
import android.os.Debug;
import android.os.UserHandle;
import android.util.Log;
import dalvik.system.VMRuntime;
import org.apache.harmony.dalvik.ddmc.Chunk;
import org.apache.harmony.dalvik.ddmc.ChunkHandler;
import org.apache.harmony.dalvik.ddmc.DdmServer;
import java.nio.ByteBuffer;
/**
* Handle "hello" messages and feature discovery.
*/
public class DdmHandleHello extends DdmHandle {
public static final int CHUNK_HELO = ChunkHandler.type("HELO");
public static final int CHUNK_WAIT = ChunkHandler.type("WAIT");
public static final int CHUNK_FEAT = ChunkHandler.type("FEAT");
private static final int CLIENT_PROTOCOL_VERSION = 1;
private static DdmHandleHello mInstance = new DdmHandleHello();
/* singleton, do not instantiate */
private DdmHandleHello() {}
/**
* Register for the messages we're interested in.
*/
public static void register() {
DdmServer.registerHandler(CHUNK_HELO, mInstance);
DdmServer.registerHandler(CHUNK_FEAT, mInstance);
}
/**
* Called when the DDM server connects. The handler is allowed to
* send messages to the server.
*/
public void onConnected() {
if (false)
Log.v("ddm-hello", "Connected!");
if (false) {
/* test spontaneous transmission */
byte[] data = new byte[] { 0, 1, 2, 3, 4, -4, -3, -2, -1, 127 };
Chunk testChunk = new Chunk(ChunkHandler.type("TEST"), data, 1, data.length - 2);
DdmServer.sendChunk(testChunk);
}
}
/**
* Called when the DDM server disconnects. Can be used to disable
* periodic transmissions or clean up saved state.
*/
public void onDisconnected() {
if (false)
Log.v("ddm-hello", "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_HELO) {
return handleHELO(request);
} else if (type == CHUNK_FEAT) {
return handleFEAT(request);
} else {
throw new RuntimeException("Unknown packet " + name(type));
}
}
/*
* Handle introductory packet. This is called during JNI_CreateJavaVM
* before frameworks native methods are registered, so be careful not
* to call any APIs that depend on frameworks native code.
*/
private Chunk handleHELO(Chunk request) {
if (false)
return createFailChunk(123, "This is a test");
/*
* Process the request.
*/
ByteBuffer in = wrapChunk(request);
int serverProtoVers = in.getInt();
if (false)
Log.v("ddm-hello", "Server version is " + serverProtoVers);
/*
* Create a response.
*/
String vmName = System.getProperty("java.vm.name", "?");
String vmVersion = System.getProperty("java.vm.version", "?");
String vmIdent = vmName + " v" + vmVersion;
DdmHandleAppName.Names names = DdmHandleAppName.getNames();
String appName = names.getAppName();
String pkgName = names.getPkgName();
VMRuntime vmRuntime = VMRuntime.getRuntime();
String instructionSetDescription =
vmRuntime.is64Bit() ? "64-bit" : "32-bit";
String vmInstructionSet = vmRuntime.vmInstructionSet();
if (vmInstructionSet != null && vmInstructionSet.length() > 0) {
instructionSetDescription += " (" + vmInstructionSet + ")";
}
String vmFlags = "CheckJNI="
+ (vmRuntime.isCheckJniEnabled() ? "true" : "false");
boolean isNativeDebuggable = vmRuntime.isNativeDebuggable();
ByteBuffer out = ByteBuffer.allocate(32
+ vmIdent.length() * 2
+ appName.length() * 2
+ instructionSetDescription.length() * 2
+ vmFlags.length() * 2
+ 1
+ pkgName.length() * 2
// STAG id (int)
+ Integer.BYTES);
out.order(ChunkHandler.CHUNK_ORDER);
out.putInt(CLIENT_PROTOCOL_VERSION);
out.putInt(android.os.Process.myPid());
out.putInt(vmIdent.length());
out.putInt(appName.length());
putString(out, vmIdent);
putString(out, appName);
out.putInt(UserHandle.myUserId());
out.putInt(instructionSetDescription.length());
putString(out, instructionSetDescription);
out.putInt(vmFlags.length());
putString(out, vmFlags);
out.put((byte)(isNativeDebuggable ? 1 : 0));
out.putInt(pkgName.length());
putString(out, pkgName);
// Added API 34 (and advertised via FEAT ddm packet)
// Send the current boot stage in ActivityThread
out.putInt(DdmSyncState.getStage().toInt());
Chunk reply = new Chunk(CHUNK_HELO, out);
/*
* Take the opportunity to inform DDMS if we are waiting for a
* debugger to attach.
*/
if (Debug.waitingForDebugger())
sendWAIT(0);
return reply;
}
/*
* Handle request for list of supported features.
*/
private Chunk handleFEAT(Chunk request) {
// TODO: query the VM to ensure that support for these features
// is actually compiled in
final String[] vmFeatures = Debug.getVmFeatureList();
if (false)
Log.v("ddm-heap", "Got feature list request");
String[] fmFeatures = Debug.getFeatureList();
int size = 4 + 4 * (vmFeatures.length + fmFeatures.length);
for (int i = vmFeatures.length - 1; i >= 0; i--) {
size += vmFeatures[i].length() * 2;
}
for (int i = fmFeatures.length - 1; i >= 0; i--) {
size += fmFeatures[i].length() * 2;
}
ByteBuffer out = ByteBuffer.allocate(size);
out.order(ChunkHandler.CHUNK_ORDER);
out.putInt(vmFeatures.length + fmFeatures.length);
for (int i = vmFeatures.length-1; i >= 0; i--) {
out.putInt(vmFeatures[i].length());
putString(out, vmFeatures[i]);
}
for (int i = fmFeatures.length - 1; i >= 0; i--) {
out.putInt(fmFeatures[i].length());
putString(out, fmFeatures[i]);
}
return new Chunk(CHUNK_FEAT, out);
}
/**
* Send up a WAIT chunk. The only currently defined value for "reason"
* is zero, which means "waiting for a debugger".
*/
public static void sendWAIT(int reason) {
byte[] data = new byte[] { (byte) reason };
Chunk waitChunk = new Chunk(CHUNK_WAIT, data, 0, 1);
DdmServer.sendChunk(waitChunk);
}
}
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