| /* |
| * Copyright (C) 2008 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. |
| */ |
| |
| #include "debugger.h" |
| |
| #include <sys/uio.h> |
| |
| #include "ScopedLocalRef.h" |
| #include "ScopedPrimitiveArray.h" |
| #include "stack_indirect_reference_table.h" |
| #include "thread_list.h" |
| |
| extern "C" void dlmalloc_walk_heap(void(*)(const void*, size_t, const void*, size_t, void*), void*); |
| #ifndef HAVE_ANDROID_OS |
| void dlmalloc_walk_heap(void(*)(const void*, size_t, const void*, size_t, void*), void*) { |
| // No-op for glibc. |
| } |
| #endif |
| |
| namespace art { |
| |
| class ObjectRegistry { |
| public: |
| ObjectRegistry() : lock_("ObjectRegistry lock") { |
| } |
| |
| JDWP::ObjectId Add(Object* o) { |
| if (o == NULL) { |
| return 0; |
| } |
| JDWP::ObjectId id = static_cast<JDWP::ObjectId>(reinterpret_cast<uintptr_t>(o)); |
| MutexLock mu(lock_); |
| map_[id] = o; |
| return id; |
| } |
| |
| void Clear() { |
| MutexLock mu(lock_); |
| LOG(DEBUG) << "Debugger has detached; object registry had " << map_.size() << " entries"; |
| map_.clear(); |
| } |
| |
| bool Contains(JDWP::ObjectId id) { |
| MutexLock mu(lock_); |
| return map_.find(id) != map_.end(); |
| } |
| |
| void VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
| MutexLock mu(lock_); |
| typedef std::map<JDWP::ObjectId, Object*>::iterator It; // C++0x auto |
| for (It it = map_.begin(); it != map_.end(); ++it) { |
| visitor(it->second, arg); |
| } |
| } |
| |
| private: |
| Mutex lock_; |
| std::map<JDWP::ObjectId, Object*> map_; |
| }; |
| |
| // JDWP is allowed unless the Zygote forbids it. |
| static bool gJdwpAllowed = true; |
| |
| // Was there a -Xrunjdwp or -agent argument on the command-line? |
| static bool gJdwpConfigured = false; |
| |
| // Broken-down JDWP options. (Only valid if gJdwpConfigured is true.) |
| static JDWP::JdwpOptions gJdwpOptions; |
| |
| // Runtime JDWP state. |
| static JDWP::JdwpState* gJdwpState = NULL; |
| static bool gDebuggerConnected; // debugger or DDMS is connected. |
| static bool gDebuggerActive; // debugger is making requests. |
| |
| static bool gDdmThreadNotification = false; |
| |
| // DDMS GC-related settings. |
| static Dbg::HpifWhen gDdmHpifWhen = Dbg::HPIF_WHEN_NEVER; |
| static Dbg::HpsgWhen gDdmHpsgWhen = Dbg::HPSG_WHEN_NEVER; |
| static Dbg::HpsgWhat gDdmHpsgWhat; |
| static Dbg::HpsgWhen gDdmNhsgWhen = Dbg::HPSG_WHEN_NEVER; |
| static Dbg::HpsgWhat gDdmNhsgWhat; |
| |
| static ObjectRegistry* gRegistry = NULL; |
| |
| /* |
| * Handle one of the JDWP name/value pairs. |
| * |
| * JDWP options are: |
| * help: if specified, show help message and bail |
| * transport: may be dt_socket or dt_shmem |
| * address: for dt_socket, "host:port", or just "port" when listening |
| * server: if "y", wait for debugger to attach; if "n", attach to debugger |
| * timeout: how long to wait for debugger to connect / listen |
| * |
| * Useful with server=n (these aren't supported yet): |
| * onthrow=<exception-name>: connect to debugger when exception thrown |
| * onuncaught=y|n: connect to debugger when uncaught exception thrown |
| * launch=<command-line>: launch the debugger itself |
| * |
| * The "transport" option is required, as is "address" if server=n. |
| */ |
| static bool ParseJdwpOption(const std::string& name, const std::string& value) { |
| if (name == "transport") { |
| if (value == "dt_socket") { |
| gJdwpOptions.transport = JDWP::kJdwpTransportSocket; |
| } else if (value == "dt_android_adb") { |
| gJdwpOptions.transport = JDWP::kJdwpTransportAndroidAdb; |
| } else { |
| LOG(ERROR) << "JDWP transport not supported: " << value; |
| return false; |
| } |
| } else if (name == "server") { |
| if (value == "n") { |
| gJdwpOptions.server = false; |
| } else if (value == "y") { |
| gJdwpOptions.server = true; |
| } else { |
| LOG(ERROR) << "JDWP option 'server' must be 'y' or 'n'"; |
| return false; |
| } |
| } else if (name == "suspend") { |
| if (value == "n") { |
| gJdwpOptions.suspend = false; |
| } else if (value == "y") { |
| gJdwpOptions.suspend = true; |
| } else { |
| LOG(ERROR) << "JDWP option 'suspend' must be 'y' or 'n'"; |
| return false; |
| } |
| } else if (name == "address") { |
| /* this is either <port> or <host>:<port> */ |
| std::string port_string; |
| gJdwpOptions.host.clear(); |
| std::string::size_type colon = value.find(':'); |
| if (colon != std::string::npos) { |
| gJdwpOptions.host = value.substr(0, colon); |
| port_string = value.substr(colon + 1); |
| } else { |
| port_string = value; |
| } |
| if (port_string.empty()) { |
| LOG(ERROR) << "JDWP address missing port: " << value; |
| return false; |
| } |
| char* end; |
| long port = strtol(port_string.c_str(), &end, 10); |
| if (*end != '\0') { |
| LOG(ERROR) << "JDWP address has junk in port field: " << value; |
| return false; |
| } |
| gJdwpOptions.port = port; |
| } else if (name == "launch" || name == "onthrow" || name == "oncaught" || name == "timeout") { |
| /* valid but unsupported */ |
| LOG(INFO) << "Ignoring JDWP option '" << name << "'='" << value << "'"; |
| } else { |
| LOG(INFO) << "Ignoring unrecognized JDWP option '" << name << "'='" << value << "'"; |
| } |
| |
| return true; |
| } |
| |
| /* |
| * Parse the latter half of a -Xrunjdwp/-agentlib:jdwp= string, e.g.: |
| * "transport=dt_socket,address=8000,server=y,suspend=n" |
| */ |
| bool Dbg::ParseJdwpOptions(const std::string& options) { |
| LOG(VERBOSE) << "ParseJdwpOptions: " << options; |
| |
| std::vector<std::string> pairs; |
| Split(options, ',', pairs); |
| |
| for (size_t i = 0; i < pairs.size(); ++i) { |
| std::string::size_type equals = pairs[i].find('='); |
| if (equals == std::string::npos) { |
| LOG(ERROR) << "Can't parse JDWP option '" << pairs[i] << "' in '" << options << "'"; |
| return false; |
| } |
| ParseJdwpOption(pairs[i].substr(0, equals), pairs[i].substr(equals + 1)); |
| } |
| |
| if (gJdwpOptions.transport == JDWP::kJdwpTransportUnknown) { |
| LOG(ERROR) << "Must specify JDWP transport: " << options; |
| } |
| if (!gJdwpOptions.server && (gJdwpOptions.host.empty() || gJdwpOptions.port == 0)) { |
| LOG(ERROR) << "Must specify JDWP host and port when server=n: " << options; |
| return false; |
| } |
| |
| gJdwpConfigured = true; |
| return true; |
| } |
| |
| void Dbg::StartJdwp() { |
| if (!gJdwpAllowed || !gJdwpConfigured) { |
| // No JDWP for you! |
| return; |
| } |
| |
| CHECK(gRegistry == NULL); |
| gRegistry = new ObjectRegistry; |
| |
| // Init JDWP if the debugger is enabled. This may connect out to a |
| // debugger, passively listen for a debugger, or block waiting for a |
| // debugger. |
| gJdwpState = JDWP::JdwpState::Create(&gJdwpOptions); |
| if (gJdwpState == NULL) { |
| LOG(WARNING) << "debugger thread failed to initialize"; |
| return; |
| } |
| |
| // If a debugger has already attached, send the "welcome" message. |
| // This may cause us to suspend all threads. |
| if (gJdwpState->IsActive()) { |
| //ScopedThreadStateChange(Thread::Current(), Thread::kRunnable); |
| if (!gJdwpState->PostVMStart()) { |
| LOG(WARNING) << "failed to post 'start' message to debugger"; |
| } |
| } |
| } |
| |
| void Dbg::StopJdwp() { |
| delete gJdwpState; |
| delete gRegistry; |
| gRegistry = NULL; |
| } |
| |
| void Dbg::GcDidFinish() { |
| if (gDdmHpifWhen != HPIF_WHEN_NEVER) { |
| LOG(DEBUG) << "Sending VM heap info to DDM"; |
| DdmSendHeapInfo(gDdmHpifWhen); |
| } |
| if (gDdmHpsgWhen != HPSG_WHEN_NEVER) { |
| LOG(DEBUG) << "Dumping VM heap to DDM"; |
| DdmSendHeapSegments(false); |
| } |
| if (gDdmNhsgWhen != HPSG_WHEN_NEVER) { |
| LOG(DEBUG) << "Dumping native heap to DDM"; |
| DdmSendHeapSegments(true); |
| } |
| } |
| |
| void Dbg::SetJdwpAllowed(bool allowed) { |
| gJdwpAllowed = allowed; |
| } |
| |
| DebugInvokeReq* Dbg::GetInvokeReq() { |
| return Thread::Current()->GetInvokeReq(); |
| } |
| |
| Thread* Dbg::GetDebugThread() { |
| return (gJdwpState != NULL) ? gJdwpState->GetDebugThread() : NULL; |
| } |
| |
| void Dbg::ClearWaitForEventThread() { |
| gJdwpState->ClearWaitForEventThread(); |
| } |
| |
| void Dbg::Connected() { |
| CHECK(!gDebuggerConnected); |
| LOG(VERBOSE) << "JDWP has attached"; |
| gDebuggerConnected = true; |
| } |
| |
| void Dbg::Active() { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::Disconnected() { |
| CHECK(gDebuggerConnected); |
| |
| gDebuggerActive = false; |
| |
| //dvmDisableAllSubMode(kSubModeDebuggerActive); |
| |
| gRegistry->Clear(); |
| gDebuggerConnected = false; |
| } |
| |
| bool Dbg::IsDebuggerConnected() { |
| return gDebuggerActive; |
| } |
| |
| bool Dbg::IsDebuggingEnabled() { |
| return gJdwpConfigured; |
| } |
| |
| int64_t Dbg::LastDebuggerActivity() { |
| UNIMPLEMENTED(WARNING); |
| return -1; |
| } |
| |
| int Dbg::ThreadRunning() { |
| return static_cast<int>(Thread::Current()->SetState(Thread::kRunnable)); |
| } |
| |
| int Dbg::ThreadWaiting() { |
| return static_cast<int>(Thread::Current()->SetState(Thread::kVmWait)); |
| } |
| |
| int Dbg::ThreadContinuing(int new_state) { |
| return static_cast<int>(Thread::Current()->SetState(static_cast<Thread::State>(new_state))); |
| } |
| |
| void Dbg::UndoDebuggerSuspensions() { |
| Runtime::Current()->GetThreadList()->UndoDebuggerSuspensions(); |
| } |
| |
| void Dbg::Exit(int status) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::VisitRoots(Heap::RootVisitor* visitor, void* arg) { |
| if (gRegistry != NULL) { |
| gRegistry->VisitRoots(visitor, arg); |
| } |
| } |
| |
| const char* Dbg::GetClassDescriptor(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| JDWP::ObjectId Dbg::GetClassObject(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::RefTypeId Dbg::GetSuperclass(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::ObjectId Dbg::GetClassLoader(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| uint32_t Dbg::GetAccessFlags(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::IsInterface(JDWP::RefTypeId id) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| void Dbg::GetClassList(uint32_t* pNumClasses, JDWP::RefTypeId** pClassRefBuf) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::GetVisibleClassList(JDWP::ObjectId classLoaderId, uint32_t* pNumClasses, JDWP::RefTypeId** pClassRefBuf) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::GetClassInfo(JDWP::RefTypeId classId, uint8_t* pTypeTag, uint32_t* pStatus, const char** pSignature) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| bool Dbg::FindLoadedClassBySignature(const char* classDescriptor, JDWP::RefTypeId* pRefTypeId) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| void Dbg::GetObjectType(JDWP::ObjectId objectId, uint8_t* pRefTypeTag, JDWP::RefTypeId* pRefTypeId) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| uint8_t Dbg::GetClassObjectType(JDWP::RefTypeId refTypeId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| const char* Dbg::GetSignature(JDWP::RefTypeId refTypeId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| const char* Dbg::GetSourceFile(JDWP::RefTypeId refTypeId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| const char* Dbg::GetObjectTypeName(JDWP::ObjectId objectId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| uint8_t Dbg::GetObjectTag(JDWP::ObjectId objectId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| int Dbg::GetTagWidth(int tag) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| int Dbg::GetArrayLength(JDWP::ObjectId arrayId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| uint8_t Dbg::GetArrayElementTag(JDWP::ObjectId arrayId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::OutputArray(JDWP::ObjectId arrayId, int firstIndex, int count, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| bool Dbg::SetArrayElements(JDWP::ObjectId arrayId, int firstIndex, int count, const uint8_t* buf) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| JDWP::ObjectId Dbg::CreateString(const char* str) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::ObjectId Dbg::CreateObject(JDWP::RefTypeId classId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::ObjectId Dbg::CreateArrayObject(JDWP::RefTypeId arrayTypeId, uint32_t length) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::MatchType(JDWP::RefTypeId instClassId, JDWP::RefTypeId classId) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| const char* Dbg::GetMethodName(JDWP::RefTypeId refTypeId, JDWP::MethodId id) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| void Dbg::OutputAllFields(JDWP::RefTypeId refTypeId, bool withGeneric, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::OutputAllMethods(JDWP::RefTypeId refTypeId, bool withGeneric, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::OutputAllInterfaces(JDWP::RefTypeId refTypeId, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::OutputLineTable(JDWP::RefTypeId refTypeId, JDWP::MethodId methodId, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::OutputVariableTable(JDWP::RefTypeId refTypeId, JDWP::MethodId id, bool withGeneric, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| uint8_t Dbg::GetFieldBasicTag(JDWP::ObjectId objId, JDWP::FieldId fieldId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| uint8_t Dbg::GetStaticFieldBasicTag(JDWP::RefTypeId refTypeId, JDWP::FieldId fieldId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| void Dbg::GetFieldValue(JDWP::ObjectId objectId, JDWP::FieldId fieldId, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::SetFieldValue(JDWP::ObjectId objectId, JDWP::FieldId fieldId, uint64_t value, int width) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::GetStaticFieldValue(JDWP::RefTypeId refTypeId, JDWP::FieldId fieldId, JDWP::ExpandBuf* pReply) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::SetStaticFieldValue(JDWP::RefTypeId refTypeId, JDWP::FieldId fieldId, uint64_t rawValue, int width) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| char* Dbg::StringToUtf8(JDWP::ObjectId strId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| char* Dbg::GetThreadName(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| JDWP::ObjectId Dbg::GetThreadGroup(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| char* Dbg::GetThreadGroupName(JDWP::ObjectId threadGroupId) { |
| UNIMPLEMENTED(FATAL); |
| return NULL; |
| } |
| |
| JDWP::ObjectId Dbg::GetThreadGroupParent(JDWP::ObjectId threadGroupId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::ObjectId Dbg::GetSystemThreadGroupId() { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| JDWP::ObjectId Dbg::GetMainThreadGroupId() { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::GetThreadStatus(JDWP::ObjectId threadId, uint32_t* threadStatus, uint32_t* suspendStatus) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| uint32_t Dbg::GetThreadSuspendCount(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::ThreadExists(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| bool Dbg::IsSuspended(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| //void Dbg::WaitForSuspend(JDWP::ObjectId threadId); |
| |
| void Dbg::GetThreadGroupThreads(JDWP::ObjectId threadGroupId, JDWP::ObjectId** ppThreadIds, uint32_t* pThreadCount) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::GetAllThreads(JDWP::ObjectId** ppThreadIds, uint32_t* pThreadCount) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| int Dbg::GetThreadFrameCount(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| return 0; |
| } |
| |
| bool Dbg::GetThreadFrame(JDWP::ObjectId threadId, int num, JDWP::FrameId* pFrameId, JDWP::JdwpLocation* pLoc) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| JDWP::ObjectId Dbg::GetThreadSelfId() { |
| return gRegistry->Add(Thread::Current()->GetPeer()); |
| } |
| |
| void Dbg::SuspendVM() { |
| Runtime::Current()->GetThreadList()->SuspendAll(true); |
| } |
| |
| void Dbg::ResumeVM() { |
| Runtime::Current()->GetThreadList()->ResumeAll(true); |
| } |
| |
| void Dbg::SuspendThread(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::ResumeThread(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::SuspendSelf() { |
| Runtime::Current()->GetThreadList()->SuspendSelfForDebugger(); |
| } |
| |
| bool Dbg::GetThisObject(JDWP::ObjectId threadId, JDWP::FrameId frameId, JDWP::ObjectId* pThisId) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| void Dbg::GetLocalValue(JDWP::ObjectId threadId, JDWP::FrameId frameId, int slot, uint8_t tag, uint8_t* buf, int expectedLen) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::SetLocalValue(JDWP::ObjectId threadId, JDWP::FrameId frameId, int slot, uint8_t tag, uint64_t value, int width) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::PostLocationEvent(const Method* method, int pcOffset, Object* thisPtr, int eventFlags) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::PostException(void* throwFp, int throwRelPc, void* catchFp, int catchRelPc, Object* exception) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::PostClassPrepare(Class* c) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| bool Dbg::WatchLocation(const JDWP::JdwpLocation* pLoc) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| void Dbg::UnwatchLocation(const JDWP::JdwpLocation* pLoc) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| bool Dbg::ConfigureStep(JDWP::ObjectId threadId, JDWP::JdwpStepSize size, JDWP::JdwpStepDepth depth) { |
| UNIMPLEMENTED(FATAL); |
| return false; |
| } |
| |
| void Dbg::UnconfigureStep(JDWP::ObjectId threadId) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| JDWP::JdwpError Dbg::InvokeMethod(JDWP::ObjectId threadId, JDWP::ObjectId objectId, JDWP::RefTypeId classId, JDWP::MethodId methodId, uint32_t numArgs, uint64_t* argArray, uint32_t options, uint8_t* pResultTag, uint64_t* pResultValue, JDWP::ObjectId* pExceptObj) { |
| UNIMPLEMENTED(FATAL); |
| return JDWP::ERR_NONE; |
| } |
| |
| void Dbg::ExecuteMethod(DebugInvokeReq* pReq) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| void Dbg::RegisterObjectId(JDWP::ObjectId id) { |
| UNIMPLEMENTED(FATAL); |
| } |
| |
| /* |
| * "buf" contains a full JDWP packet, possibly with multiple chunks. We |
| * need to process each, accumulate the replies, and ship the whole thing |
| * back. |
| * |
| * Returns "true" if we have a reply. The reply buffer is newly allocated, |
| * and includes the chunk type/length, followed by the data. |
| * |
| * TODO: we currently assume that the request and reply include a single |
| * chunk. If this becomes inconvenient we will need to adapt. |
| */ |
| bool Dbg::DdmHandlePacket(const uint8_t* buf, int dataLen, uint8_t** pReplyBuf, int* pReplyLen) { |
| CHECK_GE(dataLen, 0); |
| |
| Thread* self = Thread::Current(); |
| JNIEnv* env = self->GetJniEnv(); |
| |
| static jclass Chunk_class = env->FindClass("org/apache/harmony/dalvik/ddmc/Chunk"); |
| static jclass DdmServer_class = env->FindClass("org/apache/harmony/dalvik/ddmc/DdmServer"); |
| static jmethodID dispatch_mid = env->GetStaticMethodID(DdmServer_class, "dispatch", |
| "(I[BII)Lorg/apache/harmony/dalvik/ddmc/Chunk;"); |
| static jfieldID data_fid = env->GetFieldID(Chunk_class, "data", "[B"); |
| static jfieldID length_fid = env->GetFieldID(Chunk_class, "length", "I"); |
| static jfieldID offset_fid = env->GetFieldID(Chunk_class, "offset", "I"); |
| static jfieldID type_fid = env->GetFieldID(Chunk_class, "type", "I"); |
| |
| // Create a byte[] corresponding to 'buf'. |
| ScopedLocalRef<jbyteArray> dataArray(env, env->NewByteArray(dataLen)); |
| if (dataArray.get() == NULL) { |
| LOG(WARNING) << "byte[] allocation failed: " << dataLen; |
| env->ExceptionClear(); |
| return false; |
| } |
| env->SetByteArrayRegion(dataArray.get(), 0, dataLen, reinterpret_cast<const jbyte*>(buf)); |
| |
| const int kChunkHdrLen = 8; |
| |
| // Run through and find all chunks. [Currently just find the first.] |
| ScopedByteArrayRO contents(env, dataArray.get()); |
| jint type = JDWP::Get4BE(reinterpret_cast<const uint8_t*>(&contents[0])); |
| jint length = JDWP::Get4BE(reinterpret_cast<const uint8_t*>(&contents[4])); |
| jint offset = kChunkHdrLen; |
| if (offset + length > dataLen) { |
| LOG(WARNING) << StringPrintf("bad chunk found (len=%u pktLen=%d)", length, dataLen); |
| return false; |
| } |
| |
| // Call "private static Chunk dispatch(int type, byte[] data, int offset, int length)". |
| ScopedLocalRef<jobject> chunk(env, env->CallStaticObjectMethod(DdmServer_class, dispatch_mid, type, dataArray.get(), offset, length)); |
| if (env->ExceptionCheck()) { |
| LOG(INFO) << StringPrintf("Exception thrown by dispatcher for 0x%08x", type); |
| env->ExceptionDescribe(); |
| env->ExceptionClear(); |
| return false; |
| } |
| |
| if (chunk.get() == NULL) { |
| return false; |
| } |
| |
| /* |
| * Pull the pieces out of the chunk. We copy the results into a |
| * newly-allocated buffer that the caller can free. We don't want to |
| * continue using the Chunk object because nothing has a reference to it. |
| * |
| * We could avoid this by returning type/data/offset/length and having |
| * the caller be aware of the object lifetime issues, but that |
| * integrates the JDWP code more tightly into the VM, and doesn't work |
| * if we have responses for multiple chunks. |
| * |
| * So we're pretty much stuck with copying data around multiple times. |
| */ |
| ScopedLocalRef<jbyteArray> replyData(env, reinterpret_cast<jbyteArray>(env->GetObjectField(chunk.get(), data_fid))); |
| length = env->GetIntField(chunk.get(), length_fid); |
| offset = env->GetIntField(chunk.get(), offset_fid); |
| type = env->GetIntField(chunk.get(), type_fid); |
| |
| LOG(VERBOSE) << StringPrintf("DDM reply: type=0x%08x data=%p offset=%d length=%d", type, replyData.get(), offset, length); |
| if (length == 0 || replyData.get() == NULL) { |
| return false; |
| } |
| |
| jsize replyLength = env->GetArrayLength(replyData.get()); |
| if (offset + length > replyLength) { |
| LOG(WARNING) << StringPrintf("chunk off=%d len=%d exceeds reply array len %d", offset, length, replyLength); |
| return false; |
| } |
| |
| uint8_t* reply = new uint8_t[length + kChunkHdrLen]; |
| if (reply == NULL) { |
| LOG(WARNING) << "malloc failed: " << (length + kChunkHdrLen); |
| return false; |
| } |
| JDWP::Set4BE(reply + 0, type); |
| JDWP::Set4BE(reply + 4, length); |
| env->GetByteArrayRegion(replyData.get(), offset, length, reinterpret_cast<jbyte*>(reply + kChunkHdrLen)); |
| |
| *pReplyBuf = reply; |
| *pReplyLen = length + kChunkHdrLen; |
| |
| LOG(VERBOSE) << StringPrintf("dvmHandleDdm returning type=%.4s buf=%p len=%d", (char*) reply, reply, length); |
| return true; |
| } |
| |
| void DdmBroadcast(bool connect) { |
| LOG(VERBOSE) << "Broadcasting DDM " << (connect ? "connect" : "disconnect") << "..."; |
| |
| Thread* self = Thread::Current(); |
| if (self->GetState() != Thread::kRunnable) { |
| LOG(ERROR) << "DDM broadcast in thread state " << self->GetState(); |
| /* try anyway? */ |
| } |
| |
| JNIEnv* env = self->GetJniEnv(); |
| static jclass DdmServer_class = env->FindClass("org/apache/harmony/dalvik/ddmc/DdmServer"); |
| static jmethodID broadcast_mid = env->GetStaticMethodID(DdmServer_class, "broadcast", "(I)V"); |
| jint event = connect ? 1 /*DdmServer.CONNECTED*/ : 2 /*DdmServer.DISCONNECTED*/; |
| env->CallStaticVoidMethod(DdmServer_class, broadcast_mid, event); |
| if (env->ExceptionCheck()) { |
| LOG(ERROR) << "DdmServer.broadcast " << event << " failed"; |
| env->ExceptionDescribe(); |
| env->ExceptionClear(); |
| } |
| } |
| |
| void Dbg::DdmConnected() { |
| DdmBroadcast(true); |
| } |
| |
| void Dbg::DdmDisconnected() { |
| DdmBroadcast(false); |
| gDdmThreadNotification = false; |
| } |
| |
| /* |
| * Send a notification when a thread starts or stops. |
| * |
| * Because we broadcast the full set of threads when the notifications are |
| * first enabled, it's possible for "thread" to be actively executing. |
| */ |
| void DdmSendThreadNotification(Thread* t, bool started) { |
| if (!gDdmThreadNotification) { |
| return; |
| } |
| |
| if (started) { |
| SirtRef<String> name(t->GetName()); |
| size_t char_count = (name.get() != NULL) ? name->GetLength() : 0; |
| |
| size_t byte_count = char_count*2 + sizeof(uint32_t)*2; |
| std::vector<uint8_t> buf(byte_count); |
| JDWP::Set4BE(&buf[0], t->GetThinLockId()); |
| JDWP::Set4BE(&buf[4], char_count); |
| if (char_count > 0) { |
| // Copy the UTF-16 string, transforming to big-endian. |
| const jchar* src = name->GetCharArray()->GetData(); |
| jchar* dst = reinterpret_cast<jchar*>(&buf[8]); |
| while (char_count--) { |
| JDWP::Set2BE(reinterpret_cast<uint8_t*>(dst++), *src++); |
| } |
| } |
| Dbg::DdmSendChunk(CHUNK_TYPE("THCR"), buf.size(), &buf[0]); |
| } else { |
| uint8_t buf[4]; |
| JDWP::Set4BE(&buf[0], t->GetThinLockId()); |
| Dbg::DdmSendChunk(CHUNK_TYPE("THDE"), 4, buf); |
| } |
| } |
| |
| void DdmSendThreadStartCallback(Thread* t, void*) { |
| DdmSendThreadNotification(t, true); |
| } |
| |
| void Dbg::DdmSetThreadNotification(bool enable) { |
| // We lock the thread list to avoid sending duplicate events or missing |
| // a thread change. We should be okay holding this lock while sending |
| // the messages out. (We have to hold it while accessing a live thread.) |
| ThreadListLock lock; |
| |
| gDdmThreadNotification = enable; |
| if (enable) { |
| Runtime::Current()->GetThreadList()->ForEach(DdmSendThreadStartCallback, NULL); |
| } |
| } |
| |
| void PostThreadStartOrStop(Thread* t, bool is_start) { |
| if (gDebuggerActive) { |
| JDWP::ObjectId id = gRegistry->Add(t->GetPeer()); |
| gJdwpState->PostThreadChange(id, is_start); |
| } |
| DdmSendThreadNotification(t, is_start); |
| } |
| |
| void Dbg::PostThreadStart(Thread* t) { |
| PostThreadStartOrStop(t, true); |
| } |
| |
| void Dbg::PostThreadDeath(Thread* t) { |
| PostThreadStartOrStop(t, false); |
| } |
| |
| void Dbg::DdmSendChunk(int type, size_t byte_count, const uint8_t* buf) { |
| CHECK(buf != NULL); |
| iovec vec[1]; |
| vec[0].iov_base = reinterpret_cast<void*>(const_cast<uint8_t*>(buf)); |
| vec[0].iov_len = byte_count; |
| Dbg::DdmSendChunkV(type, vec, 1); |
| } |
| |
| void Dbg::DdmSendChunkV(int type, const struct iovec* iov, int iovcnt) { |
| if (gJdwpState == NULL) { |
| LOG(VERBOSE) << "Debugger thread not active, ignoring DDM send: " << type; |
| } else { |
| gJdwpState->DdmSendChunkV(type, iov, iovcnt); |
| } |
| } |
| |
| int Dbg::DdmHandleHpifChunk(HpifWhen when) { |
| if (when == HPIF_WHEN_NOW) { |
| DdmSendHeapInfo(when); |
| return true; |
| } |
| |
| if (when != HPIF_WHEN_NEVER && when != HPIF_WHEN_NEXT_GC && when != HPIF_WHEN_EVERY_GC) { |
| LOG(ERROR) << "invalid HpifWhen value: " << static_cast<int>(when); |
| return false; |
| } |
| |
| gDdmHpifWhen = when; |
| return true; |
| } |
| |
| bool Dbg::DdmHandleHpsgNhsgChunk(Dbg::HpsgWhen when, Dbg::HpsgWhat what, bool native) { |
| if (when != HPSG_WHEN_NEVER && when != HPSG_WHEN_EVERY_GC) { |
| LOG(ERROR) << "invalid HpsgWhen value: " << static_cast<int>(when); |
| return false; |
| } |
| |
| if (what != HPSG_WHAT_MERGED_OBJECTS && what != HPSG_WHAT_DISTINCT_OBJECTS) { |
| LOG(ERROR) << "invalid HpsgWhat value: " << static_cast<int>(what); |
| return false; |
| } |
| |
| if (native) { |
| gDdmNhsgWhen = when; |
| gDdmNhsgWhat = what; |
| } else { |
| gDdmHpsgWhen = when; |
| gDdmHpsgWhat = what; |
| } |
| return true; |
| } |
| |
| void Dbg::DdmSendHeapInfo(HpifWhen reason) { |
| // If there's a one-shot 'when', reset it. |
| if (reason == gDdmHpifWhen) { |
| if (gDdmHpifWhen == HPIF_WHEN_NEXT_GC) { |
| gDdmHpifWhen = HPIF_WHEN_NEVER; |
| } |
| } |
| |
| /* |
| * Chunk HPIF (client --> server) |
| * |
| * Heap Info. General information about the heap, |
| * suitable for a summary display. |
| * |
| * [u4]: number of heaps |
| * |
| * For each heap: |
| * [u4]: heap ID |
| * [u8]: timestamp in ms since Unix epoch |
| * [u1]: capture reason (same as 'when' value from server) |
| * [u4]: max heap size in bytes (-Xmx) |
| * [u4]: current heap size in bytes |
| * [u4]: current number of bytes allocated |
| * [u4]: current number of objects allocated |
| */ |
| uint8_t heap_count = 1; |
| std::vector<uint8_t> bytes(4 + (heap_count * (4 + 8 + 1 + 4 + 4 + 4 + 4))); |
| uint8_t* dst = &bytes[0]; |
| JDWP::Write4BE(&dst, heap_count); |
| JDWP::Write4BE(&dst, 1); // Heap id (bogus; we only have one heap). |
| JDWP::Write8BE(&dst, MilliTime()); |
| JDWP::Write1BE(&dst, reason); |
| JDWP::Write4BE(&dst, Heap::GetMaxMemory()); // Max allowed heap size in bytes. |
| JDWP::Write4BE(&dst, Heap::GetTotalMemory()); // Current heap size in bytes. |
| JDWP::Write4BE(&dst, Heap::GetBytesAllocated()); |
| JDWP::Write4BE(&dst, Heap::GetObjectsAllocated()); |
| Dbg::DdmSendChunk(CHUNK_TYPE("HPIF"), bytes.size(), &bytes[0]); |
| } |
| |
| enum HpsgSolidity { |
| SOLIDITY_FREE = 0, |
| SOLIDITY_HARD = 1, |
| SOLIDITY_SOFT = 2, |
| SOLIDITY_WEAK = 3, |
| SOLIDITY_PHANTOM = 4, |
| SOLIDITY_FINALIZABLE = 5, |
| SOLIDITY_SWEEP = 6, |
| }; |
| |
| enum HpsgKind { |
| KIND_OBJECT = 0, |
| KIND_CLASS_OBJECT = 1, |
| KIND_ARRAY_1 = 2, |
| KIND_ARRAY_2 = 3, |
| KIND_ARRAY_4 = 4, |
| KIND_ARRAY_8 = 5, |
| KIND_UNKNOWN = 6, |
| KIND_NATIVE = 7, |
| }; |
| |
| #define HPSG_PARTIAL (1<<7) |
| #define HPSG_STATE(solidity, kind) ((uint8_t)((((kind) & 0x7) << 3) | ((solidity) & 0x7))) |
| |
| struct HeapChunkContext { |
| std::vector<uint8_t> buf; |
| uint8_t* p; |
| uint8_t* pieceLenField; |
| size_t totalAllocationUnits; |
| int type; |
| bool merge; |
| bool needHeader; |
| |
| // Maximum chunk size. Obtain this from the formula: |
| // (((maximum_heap_size / ALLOCATION_UNIT_SIZE) + 255) / 256) * 2 |
| HeapChunkContext(bool merge, bool native) |
| : buf(16384 - 16), |
| type(0), |
| merge(merge) { |
| Reset(); |
| if (native) { |
| type = CHUNK_TYPE("NHSG"); |
| } else { |
| type = merge ? CHUNK_TYPE("HPSG") : CHUNK_TYPE("HPSO"); |
| } |
| } |
| |
| ~HeapChunkContext() { |
| if (p > &buf[0]) { |
| Flush(); |
| } |
| } |
| |
| void EnsureHeader(const void* chunk_ptr) { |
| if (!needHeader) { |
| return; |
| } |
| |
| // Start a new HPSx chunk. |
| JDWP::Write4BE(&p, 1); // Heap id (bogus; we only have one heap). |
| JDWP::Write1BE(&p, 8); // Size of allocation unit, in bytes. |
| |
| JDWP::Write4BE(&p, reinterpret_cast<uintptr_t>(chunk_ptr)); // virtual address of segment start. |
| JDWP::Write4BE(&p, 0); // offset of this piece (relative to the virtual address). |
| // [u4]: length of piece, in allocation units |
| // We won't know this until we're done, so save the offset and stuff in a dummy value. |
| pieceLenField = p; |
| JDWP::Write4BE(&p, 0x55555555); |
| needHeader = false; |
| } |
| |
| void Flush() { |
| // Patch the "length of piece" field. |
| CHECK_LE(&buf[0], pieceLenField); |
| CHECK_LE(pieceLenField, p); |
| JDWP::Set4BE(pieceLenField, totalAllocationUnits); |
| |
| Dbg::DdmSendChunk(type, p - &buf[0], &buf[0]); |
| Reset(); |
| } |
| |
| private: |
| void Reset() { |
| p = &buf[0]; |
| totalAllocationUnits = 0; |
| needHeader = true; |
| pieceLenField = NULL; |
| } |
| |
| DISALLOW_COPY_AND_ASSIGN(HeapChunkContext); |
| }; |
| |
| #define ALLOCATION_UNIT_SIZE 8 |
| |
| uint8_t ExamineObject(const Object* o, bool is_native_heap) { |
| if (o == NULL) { |
| return HPSG_STATE(SOLIDITY_FREE, 0); |
| } |
| |
| // It's an allocated chunk. Figure out what it is. |
| |
| // If we're looking at the native heap, we'll just return |
| // (SOLIDITY_HARD, KIND_NATIVE) for all allocated chunks. |
| if (is_native_heap || !Heap::IsLiveObjectLocked(o)) { |
| return HPSG_STATE(SOLIDITY_HARD, KIND_NATIVE); |
| } |
| |
| Class* c = o->GetClass(); |
| if (c == NULL) { |
| // The object was probably just created but hasn't been initialized yet. |
| return HPSG_STATE(SOLIDITY_HARD, KIND_OBJECT); |
| } |
| |
| if (!Heap::IsHeapAddress(c)) { |
| LOG(WARNING) << "invalid class for managed heap object: " << o << " " << c; |
| return HPSG_STATE(SOLIDITY_HARD, KIND_UNKNOWN); |
| } |
| |
| if (c->IsClassClass()) { |
| return HPSG_STATE(SOLIDITY_HARD, KIND_CLASS_OBJECT); |
| } |
| |
| if (c->IsArrayClass()) { |
| if (o->IsObjectArray()) { |
| return HPSG_STATE(SOLIDITY_HARD, KIND_ARRAY_4); |
| } |
| switch (c->GetComponentSize()) { |
| case 1: return HPSG_STATE(SOLIDITY_HARD, KIND_ARRAY_1); |
| case 2: return HPSG_STATE(SOLIDITY_HARD, KIND_ARRAY_2); |
| case 4: return HPSG_STATE(SOLIDITY_HARD, KIND_ARRAY_4); |
| case 8: return HPSG_STATE(SOLIDITY_HARD, KIND_ARRAY_8); |
| } |
| } |
| |
| return HPSG_STATE(SOLIDITY_HARD, KIND_OBJECT); |
| } |
| |
| static void HeapChunkCallback(const void* chunk_ptr, size_t chunk_len, const void* user_ptr, size_t user_len, void* arg) { |
| HeapChunkContext* context = reinterpret_cast<HeapChunkContext*>(arg); |
| |
| CHECK_EQ((chunk_len & (ALLOCATION_UNIT_SIZE-1)), 0U); |
| |
| /* Make sure there's enough room left in the buffer. |
| * We need to use two bytes for every fractional 256 |
| * allocation units used by the chunk. |
| */ |
| { |
| size_t needed = (((chunk_len/ALLOCATION_UNIT_SIZE + 255) / 256) * 2); |
| size_t bytesLeft = context->buf.size() - (size_t)(context->p - &context->buf[0]); |
| if (bytesLeft < needed) { |
| context->Flush(); |
| } |
| |
| bytesLeft = context->buf.size() - (size_t)(context->p - &context->buf[0]); |
| if (bytesLeft < needed) { |
| LOG(WARNING) << "chunk is too big to transmit (chunk_len=" << chunk_len << ", " << needed << " bytes)"; |
| return; |
| } |
| } |
| |
| // OLD-TODO: notice when there's a gap and start a new heap, or at least a new range. |
| context->EnsureHeader(chunk_ptr); |
| |
| // Determine the type of this chunk. |
| // OLD-TODO: if context.merge, see if this chunk is different from the last chunk. |
| // If it's the same, we should combine them. |
| uint8_t state = ExamineObject(reinterpret_cast<const Object*>(user_ptr), (context->type == CHUNK_TYPE("NHSG"))); |
| |
| // Write out the chunk description. |
| chunk_len /= ALLOCATION_UNIT_SIZE; // convert to allocation units |
| context->totalAllocationUnits += chunk_len; |
| while (chunk_len > 256) { |
| *context->p++ = state | HPSG_PARTIAL; |
| *context->p++ = 255; // length - 1 |
| chunk_len -= 256; |
| } |
| *context->p++ = state; |
| *context->p++ = chunk_len - 1; |
| } |
| |
| static void WalkHeap(bool merge, bool native) { |
| HeapChunkContext context(merge, native); |
| if (native) { |
| dlmalloc_walk_heap(HeapChunkCallback, &context); |
| } else { |
| Heap::WalkHeap(HeapChunkCallback, &context); |
| } |
| } |
| |
| void Dbg::DdmSendHeapSegments(bool native) { |
| Dbg::HpsgWhen when; |
| Dbg::HpsgWhat what; |
| if (!native) { |
| when = gDdmHpsgWhen; |
| what = gDdmHpsgWhat; |
| } else { |
| when = gDdmNhsgWhen; |
| what = gDdmNhsgWhat; |
| } |
| if (when == HPSG_WHEN_NEVER) { |
| return; |
| } |
| |
| // Figure out what kind of chunks we'll be sending. |
| CHECK(what == HPSG_WHAT_MERGED_OBJECTS || what == HPSG_WHAT_DISTINCT_OBJECTS) << static_cast<int>(what); |
| |
| // First, send a heap start chunk. |
| uint8_t heap_id[4]; |
| JDWP::Set4BE(&heap_id[0], 1); // Heap id (bogus; we only have one heap). |
| Dbg::DdmSendChunk(native ? CHUNK_TYPE("NHST") : CHUNK_TYPE("HPST"), sizeof(heap_id), heap_id); |
| |
| // Send a series of heap segment chunks. |
| WalkHeap((what == HPSG_WHAT_MERGED_OBJECTS), native); |
| |
| // Finally, send a heap end chunk. |
| Dbg::DdmSendChunk(native ? CHUNK_TYPE("NHEN") : CHUNK_TYPE("HPEN"), sizeof(heap_id), heap_id); |
| } |
| |
| } // namespace art |