DdmHandleThread.java revision 9066cfe9886ac131c34d59ed0e2d287b0e3c0087
19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2007 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage android.ddm; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.apache.harmony.dalvik.ddmc.Chunk; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.apache.harmony.dalvik.ddmc.ChunkHandler; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.apache.harmony.dalvik.ddmc.DdmServer; 229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport org.apache.harmony.dalvik.ddmc.DdmVmInternal; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Config; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Log; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.nio.ByteBuffer; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle thread-related traffic. 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpublic class DdmHandleThread extends ChunkHandler { 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHUNK_THEN = type("THEN"); 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHUNK_THCR = type("THCR"); 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHUNK_THDE = type("THDE"); 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHUNK_THST = type("THST"); 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static final int CHUNK_STKL = type("STKL"); 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static DdmHandleThread mInstance = new DdmHandleThread(); 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* singleton, do not instantiate */ 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private DdmHandleThread() {} 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Register for the messages we're interested in. 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public static void register() { 489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DdmServer.registerHandler(CHUNK_THEN, mInstance); 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DdmServer.registerHandler(CHUNK_THST, mInstance); 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DdmServer.registerHandler(CHUNK_STKL, mInstance); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Called when the DDM server connects. The handler is allowed to 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * send messages to the server. 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void connected() {} 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Called when the DDM server disconnects. Can be used to disable 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * periodic transmissions or clean up saved state. 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void disconnected() {} 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle a chunk of data. 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public Chunk handleChunk(Chunk request) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (Config.LOGV) 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.v("ddm-thread", "Handling " + name(request.type) + " chunk"); 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int type = request.type; 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (type == CHUNK_THEN) { 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handleTHEN(request); 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (type == CHUNK_THST) { 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handleTHST(request); 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else if (type == CHUNK_STKL) { 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return handleSTKL(request); 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throw new RuntimeException("Unknown packet " 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project + ChunkHandler.name(type)); 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle a "THread notification ENable" request. 879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Chunk handleTHEN(Chunk request) { 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ByteBuffer in = wrapChunk(request); 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean enable = (in.get() != 0); 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //Log.i("ddm-thread", "Thread notify enable: " + enable); 939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project DdmVmInternal.threadNotify(enable); 959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return null; // empty response 969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle a "THread STatus" request. This is constructed by the VM. 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Chunk handleTHST(Chunk request) { 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ByteBuffer in = wrapChunk(request); 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // currently nothing to read from "in" 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //Log.d("ddm-thread", "Thread status request"); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project byte[] status = DdmVmInternal.getThreadStats(); 1089066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (status != null) 1099066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Chunk(CHUNK_THST, status, 0, status.length); 1109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project else 1119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createFailChunk(1, "Can't build THST chunk"); 1129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Handle a STacK List request. 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * This is done by threadId, which isn't great since those are 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * recycled. We need a thread serial ID. The Linux tid is an okay 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * answer as it's unlikely to recycle at the exact wrong moment. 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * However, we're using the short threadId in THST messages, so we 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * use them here for consistency. (One thought is to keep the current 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * thread ID in the low 16 bits and somehow serialize the top 16 bits.) 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Chunk handleSTKL(Chunk request) { 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ByteBuffer in = wrapChunk(request); 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int threadId; 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project threadId = in.getInt(); 1299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project //Log.d("ddm-thread", "Stack list request " + threadId); 1319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project StackTraceElement[] trace = DdmVmInternal.getStackTraceById(threadId); 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (trace == null) { 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createFailChunk(1, "Stack trace unavailable"); 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return createStackChunk(trace, threadId); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /* 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Serialize a StackTraceElement[] into an STKL chunk. 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * We include the threadId in the response so the other side doesn't have 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * to match up requests and responses as carefully. 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private Chunk createStackChunk(StackTraceElement[] trace, int threadId) { 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int bufferSize = 0; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4; // version, flags, whatever 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4; // thread ID 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4; // frame count 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (StackTraceElement elem : trace) { 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4 + elem.getClassName().length() * 2; 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4 + elem.getMethodName().length() * 2; 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4; 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (elem.getFileName() != null) 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += elem.getFileName().length() * 2; 1589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project bufferSize += 4; // line number 1599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project ByteBuffer out = ByteBuffer.allocate(bufferSize); 1629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(0); 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(threadId); 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(trace.length); 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (StackTraceElement elem : trace) { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(elem.getClassName().length()); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project putString(out, elem.getClassName()); 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(elem.getMethodName().length()); 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project putString(out, elem.getMethodName()); 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (elem.getFileName() != null) { 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(elem.getFileName().length()); 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project putString(out, elem.getFileName()); 1739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(0); 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project out.putInt(elem.getLineNumber()); 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return new Chunk(CHUNK_STKL, out); 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 183