| /* |
| * 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. |
| */ |
| |
| /* |
| * Dalvik-specific side of debugger support. (The JDWP code is intended to |
| * be relatively generic.) |
| */ |
| #ifndef ART_RUNTIME_DEBUGGER_H_ |
| #define ART_RUNTIME_DEBUGGER_H_ |
| |
| #include <pthread.h> |
| |
| #include <set> |
| #include <string> |
| #include <vector> |
| |
| #include "jdwp/jdwp.h" |
| #include "jni.h" |
| #include "jvalue.h" |
| #include "object_callbacks.h" |
| #include "thread_state.h" |
| |
| namespace art { |
| namespace mirror { |
| class ArtField; |
| class ArtMethod; |
| class Class; |
| class Object; |
| class Throwable; |
| } // namespace mirror |
| class AllocRecord; |
| class Thread; |
| class ThrowLocation; |
| |
| /* |
| * Invoke-during-breakpoint support. |
| */ |
| struct DebugInvokeReq { |
| DebugInvokeReq() |
| : ready(false), invoke_needed(false), |
| receiver(NULL), thread(NULL), klass(NULL), method(NULL), |
| arg_count(0), arg_values(NULL), options(0), error(JDWP::ERR_NONE), |
| result_tag(JDWP::JT_VOID), exception(0), |
| lock("a DebugInvokeReq lock", kBreakpointInvokeLock), |
| cond("a DebugInvokeReq condition variable", lock) { |
| } |
| |
| /* boolean; only set when we're in the tail end of an event handler */ |
| bool ready; |
| |
| /* boolean; set if the JDWP thread wants this thread to do work */ |
| bool invoke_needed; |
| |
| /* request */ |
| mirror::Object* receiver; /* not used for ClassType.InvokeMethod */ |
| mirror::Object* thread; |
| mirror::Class* klass; |
| mirror::ArtMethod* method; |
| uint32_t arg_count; |
| uint64_t* arg_values; /* will be NULL if arg_count_ == 0 */ |
| uint32_t options; |
| |
| /* result */ |
| JDWP::JdwpError error; |
| JDWP::JdwpTag result_tag; |
| JValue result_value; |
| JDWP::ObjectId exception; |
| |
| /* condition variable to wait on while the method executes */ |
| Mutex lock DEFAULT_MUTEX_ACQUIRED_AFTER; |
| ConditionVariable cond GUARDED_BY(lock); |
| |
| void VisitRoots(RootCallback* callback, void* arg, uint32_t tid, RootType root_type) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| void Clear(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DebugInvokeReq); |
| }; |
| |
| // Thread local data-structure that holds fields for controlling single-stepping. |
| struct SingleStepControl { |
| SingleStepControl() |
| : is_active(false), step_size(JDWP::SS_MIN), step_depth(JDWP::SD_INTO), |
| method(nullptr), stack_depth(0) { |
| } |
| |
| // Are we single-stepping right now? |
| bool is_active; |
| |
| // See JdwpStepSize and JdwpStepDepth for details. |
| JDWP::JdwpStepSize step_size; |
| JDWP::JdwpStepDepth step_depth; |
| |
| // The location this single-step was initiated from. |
| // A single-step is initiated in a suspended thread. We save here the current method and the |
| // set of DEX pcs associated to the source line number where the suspension occurred. |
| // This is used to support SD_INTO and SD_OVER single-step depths so we detect when a single-step |
| // causes the execution of an instruction in a different method or at a different line number. |
| mirror::ArtMethod* method; |
| std::set<uint32_t> dex_pcs; |
| |
| // The stack depth when this single-step was initiated. This is used to support SD_OVER and SD_OUT |
| // single-step depth. |
| int stack_depth; |
| |
| void VisitRoots(RootCallback* callback, void* arg, uint32_t tid, RootType root_type) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| bool ContainsDexPc(uint32_t dex_pc) const; |
| |
| void Clear(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(SingleStepControl); |
| }; |
| |
| // TODO rename to InstrumentationRequest. |
| struct DeoptimizationRequest { |
| enum Kind { |
| kNothing, // no action. |
| kRegisterForEvent, // start listening for instrumentation event. |
| kUnregisterForEvent, // stop listening for instrumentation event. |
| kFullDeoptimization, // deoptimize everything. |
| kFullUndeoptimization, // undeoptimize everything. |
| kSelectiveDeoptimization, // deoptimize one method. |
| kSelectiveUndeoptimization // undeoptimize one method. |
| }; |
| |
| DeoptimizationRequest() : kind(kNothing), instrumentation_event(0), method(nullptr) {} |
| |
| void VisitRoots(RootCallback* callback, void* arg); |
| |
| Kind kind; |
| |
| // TODO we could use a union to hold the instrumentation_event and the method since they |
| // respectively have sense only for kRegisterForEvent/kUnregisterForEvent and |
| // kSelectiveDeoptimization/kSelectiveUndeoptimization. |
| |
| // Event to start or stop listening to. Only for kRegisterForEvent and kUnregisterForEvent. |
| uint32_t instrumentation_event; |
| |
| // Method for selective deoptimization. |
| mirror::ArtMethod* method; |
| }; |
| |
| class Dbg { |
| public: |
| static bool ParseJdwpOptions(const std::string& options); |
| static void SetJdwpAllowed(bool allowed); |
| |
| static void StartJdwp(); |
| static void StopJdwp(); |
| |
| // Invoked by the GC in case we need to keep DDMS informed. |
| static void GcDidFinish() LOCKS_EXCLUDED(Locks::mutator_lock_); |
| |
| // Return the DebugInvokeReq for the current thread. |
| static DebugInvokeReq* GetInvokeReq(); |
| |
| static Thread* GetDebugThread(); |
| static void ClearWaitForEventThread(); |
| |
| /* |
| * Enable/disable breakpoints and step modes. Used to provide a heads-up |
| * when the debugger attaches. |
| */ |
| static void Connected(); |
| static void GoActive() |
| LOCKS_EXCLUDED(Locks::breakpoint_lock_, deoptimization_lock_, Locks::mutator_lock_); |
| static void Disconnected() LOCKS_EXCLUDED(deoptimization_lock_, Locks::mutator_lock_); |
| static void Disposed(); |
| |
| // Returns true if we're actually debugging with a real debugger, false if it's |
| // just DDMS (or nothing at all). |
| static bool IsDebuggerActive(); |
| |
| // Returns true if we had -Xrunjdwp or -agentlib:jdwp= on the command line. |
| static bool IsJdwpConfigured(); |
| |
| static bool IsDisposed(); |
| |
| /* |
| * Time, in milliseconds, since the last debugger activity. Does not |
| * include DDMS activity. Returns -1 if there has been no activity. |
| * Returns 0 if we're in the middle of handling a debugger request. |
| */ |
| static int64_t LastDebuggerActivity(); |
| |
| static void UndoDebuggerSuspensions(); |
| |
| /* |
| * Class, Object, Array |
| */ |
| static std::string GetClassName(JDWP::RefTypeId id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetClassObject(JDWP::RefTypeId id, JDWP::ObjectId& class_object_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetSuperclass(JDWP::RefTypeId id, JDWP::RefTypeId& superclass_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetClassLoader(JDWP::RefTypeId id, JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetModifiers(JDWP::RefTypeId id, JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetReflectedType(JDWP::RefTypeId class_id, JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void GetClassList(std::vector<JDWP::RefTypeId>& classes) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetClassInfo(JDWP::RefTypeId class_id, JDWP::JdwpTypeTag* pTypeTag, |
| uint32_t* pStatus, std::string* pDescriptor) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void FindLoadedClassBySignature(const char* descriptor, std::vector<JDWP::RefTypeId>& ids) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetReferenceType(JDWP::ObjectId object_id, JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetSignature(JDWP::RefTypeId ref_type_id, std::string* signature) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetSourceFile(JDWP::RefTypeId ref_type_id, std::string& source_file) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetObjectTag(JDWP::ObjectId object_id, uint8_t& tag) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static size_t GetTagWidth(JDWP::JdwpTag tag); |
| |
| static JDWP::JdwpError GetArrayLength(JDWP::ObjectId array_id, int& length) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError OutputArray(JDWP::ObjectId array_id, int offset, int count, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError SetArrayElements(JDWP::ObjectId array_id, int offset, int count, |
| JDWP::Request& request) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static JDWP::ObjectId CreateString(const std::string& str) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError CreateObject(JDWP::RefTypeId class_id, JDWP::ObjectId& new_object) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError CreateArrayObject(JDWP::RefTypeId array_class_id, uint32_t length, |
| JDWP::ObjectId& new_array) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static bool MatchType(JDWP::RefTypeId instance_class_id, JDWP::RefTypeId class_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // |
| // Monitors. |
| // |
| static JDWP::JdwpError GetMonitorInfo(JDWP::ObjectId object_id, JDWP::ExpandBuf* reply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetOwnedMonitors(JDWP::ObjectId thread_id, |
| std::vector<JDWP::ObjectId>& monitors, |
| std::vector<uint32_t>& stack_depths) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetContendedMonitor(JDWP::ObjectId thread_id, |
| JDWP::ObjectId& contended_monitor) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // |
| // Heap. |
| // |
| static JDWP::JdwpError GetInstanceCounts(const std::vector<JDWP::RefTypeId>& class_ids, |
| std::vector<uint64_t>& counts) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetInstances(JDWP::RefTypeId class_id, int32_t max_count, |
| std::vector<JDWP::ObjectId>& instances) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetReferringObjects(JDWP::ObjectId object_id, int32_t max_count, |
| std::vector<JDWP::ObjectId>& referring_objects) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError DisableCollection(JDWP::ObjectId object_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError EnableCollection(JDWP::ObjectId object_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError IsCollected(JDWP::ObjectId object_id, bool& is_collected) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DisposeObject(JDWP::ObjectId object_id, uint32_t reference_count) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // |
| // Methods and fields. |
| // |
| static std::string GetMethodName(JDWP::MethodId method_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError OutputDeclaredFields(JDWP::RefTypeId ref_type_id, bool with_generic, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError OutputDeclaredMethods(JDWP::RefTypeId ref_type_id, bool with_generic, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError OutputDeclaredInterfaces(JDWP::RefTypeId ref_type_id, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void OutputLineTable(JDWP::RefTypeId ref_type_id, JDWP::MethodId method_id, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void OutputVariableTable(JDWP::RefTypeId ref_type_id, JDWP::MethodId id, bool with_generic, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void OutputMethodReturnValue(JDWP::MethodId method_id, const JValue* return_value, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void OutputFieldValue(JDWP::FieldId field_id, const JValue* field_value, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetBytecodes(JDWP::RefTypeId class_id, JDWP::MethodId method_id, |
| std::vector<uint8_t>& bytecodes) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static std::string GetFieldName(JDWP::FieldId field_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpTag GetFieldBasicTag(JDWP::FieldId field_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpTag GetStaticFieldBasicTag(JDWP::FieldId field_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetFieldValue(JDWP::ObjectId object_id, JDWP::FieldId field_id, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError SetFieldValue(JDWP::ObjectId object_id, JDWP::FieldId field_id, |
| uint64_t value, int width) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetStaticFieldValue(JDWP::RefTypeId ref_type_id, JDWP::FieldId field_id, |
| JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError SetStaticFieldValue(JDWP::FieldId field_id, uint64_t value, int width) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static std::string StringToUtf8(JDWP::ObjectId string_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void OutputJValue(JDWP::JdwpTag tag, const JValue* return_value, JDWP::ExpandBuf* pReply) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| /* |
| * Thread, ThreadGroup, Frame |
| */ |
| static JDWP::JdwpError GetThreadName(JDWP::ObjectId thread_id, std::string& name) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| static JDWP::JdwpError GetThreadGroup(JDWP::ObjectId thread_id, JDWP::ExpandBuf* pReply) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| static std::string GetThreadGroupName(JDWP::ObjectId thread_group_id); |
| static JDWP::ObjectId GetThreadGroupParent(JDWP::ObjectId thread_group_id) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::ObjectId GetSystemThreadGroupId() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::ObjectId GetMainThreadGroupId(); |
| |
| static JDWP::JdwpThreadStatus ToJdwpThreadStatus(ThreadState state); |
| static JDWP::JdwpError GetThreadStatus(JDWP::ObjectId thread_id, |
| JDWP::JdwpThreadStatus* pThreadStatus, |
| JDWP::JdwpSuspendStatus* pSuspendStatus) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| static JDWP::JdwpError GetThreadDebugSuspendCount(JDWP::ObjectId thread_id, |
| JDWP::ExpandBuf* pReply) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_); |
| // static void WaitForSuspend(JDWP::ObjectId thread_id); |
| |
| // Fills 'thread_ids' with the threads in the given thread group. If thread_group_id == 0, |
| // returns all threads. |
| static void GetThreads(JDWP::ObjectId thread_group_id, std::vector<JDWP::ObjectId>& thread_ids) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void GetChildThreadGroups(JDWP::ObjectId thread_group_id, std::vector<JDWP::ObjectId>& child_thread_group_ids); |
| |
| static JDWP::JdwpError GetThreadFrameCount(JDWP::ObjectId thread_id, size_t& result) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| static JDWP::JdwpError GetThreadFrames(JDWP::ObjectId thread_id, size_t start_frame, |
| size_t frame_count, JDWP::ExpandBuf* buf) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static JDWP::ObjectId GetThreadSelfId() |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void SuspendVM() |
| LOCKS_EXCLUDED(Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_); |
| static void ResumeVM(); |
| static JDWP::JdwpError SuspendThread(JDWP::ObjectId thread_id, bool request_suspension = true) |
| LOCKS_EXCLUDED(Locks::mutator_lock_, |
| Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_); |
| |
| static void ResumeThread(JDWP::ObjectId thread_id) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void SuspendSelf(); |
| |
| static JDWP::JdwpError GetThisObject(JDWP::ObjectId thread_id, JDWP::FrameId frame_id, |
| JDWP::ObjectId* result) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError GetLocalValue(JDWP::ObjectId thread_id, JDWP::FrameId frame_id, int slot, |
| JDWP::JdwpTag tag, uint8_t* buf, size_t expectedLen) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static JDWP::JdwpError SetLocalValue(JDWP::ObjectId thread_id, JDWP::FrameId frame_id, int slot, |
| JDWP::JdwpTag tag, uint64_t value, size_t width) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static JDWP::JdwpError Interrupt(JDWP::ObjectId thread_id) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| |
| /* |
| * Debugger notification |
| */ |
| enum { |
| kBreakpoint = 0x01, |
| kSingleStep = 0x02, |
| kMethodEntry = 0x04, |
| kMethodExit = 0x08, |
| }; |
| static void PostFieldAccessEvent(mirror::ArtMethod* m, int dex_pc, mirror::Object* this_object, |
| mirror::ArtField* f) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostFieldModificationEvent(mirror::ArtMethod* m, int dex_pc, |
| mirror::Object* this_object, mirror::ArtField* f, |
| const JValue* field_value) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostException(const ThrowLocation& throw_location, mirror::ArtMethod* catch_method, |
| uint32_t catch_dex_pc, mirror::Throwable* exception) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostThreadStart(Thread* t) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostThreadDeath(Thread* t) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostClassPrepare(mirror::Class* c) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static void UpdateDebugger(Thread* thread, mirror::Object* this_object, |
| mirror::ArtMethod* method, uint32_t new_dex_pc, |
| int event_flags, const JValue* return_value) |
| LOCKS_EXCLUDED(Locks::breakpoint_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Records deoptimization request in the queue. |
| static void RequestDeoptimization(const DeoptimizationRequest& req) |
| LOCKS_EXCLUDED(deoptimization_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Support delayed full undeoptimization requests. This is currently only used for single-step |
| // events. |
| static void DelayFullUndeoptimization() LOCKS_EXCLUDED(deoptimization_lock_); |
| static void ProcessDelayedFullUndeoptimizations() |
| LOCKS_EXCLUDED(deoptimization_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Manage deoptimization after updating JDWP events list. Suspends all threads, processes each |
| // request and finally resumes all threads. |
| static void ManageDeoptimization() |
| LOCKS_EXCLUDED(deoptimization_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Breakpoints. |
| static void WatchLocation(const JDWP::JdwpLocation* pLoc, DeoptimizationRequest* req) |
| LOCKS_EXCLUDED(Locks::breakpoint_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void UnwatchLocation(const JDWP::JdwpLocation* pLoc, DeoptimizationRequest* req) |
| LOCKS_EXCLUDED(Locks::breakpoint_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Single-stepping. |
| static JDWP::JdwpError ConfigureStep(JDWP::ObjectId thread_id, JDWP::JdwpStepSize size, |
| JDWP::JdwpStepDepth depth) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void UnconfigureStep(JDWP::ObjectId thread_id) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static JDWP::JdwpError InvokeMethod(JDWP::ObjectId thread_id, JDWP::ObjectId object_id, |
| JDWP::RefTypeId class_id, JDWP::MethodId method_id, |
| uint32_t arg_count, uint64_t* arg_values, |
| JDWP::JdwpTag* arg_types, uint32_t options, |
| JDWP::JdwpTag* pResultTag, uint64_t* pResultValue, |
| JDWP::ObjectId* pExceptObj) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_, |
| Locks::thread_suspend_count_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void ExecuteMethod(DebugInvokeReq* pReq); |
| |
| /* |
| * DDM support. |
| */ |
| static void DdmSendThreadNotification(Thread* t, uint32_t type) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmSetThreadNotification(bool enable) |
| LOCKS_EXCLUDED(Locks::thread_list_lock_); |
| static bool DdmHandlePacket(JDWP::Request& request, uint8_t** pReplyBuf, int* pReplyLen); |
| static void DdmConnected() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmDisconnected() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmSendChunk(uint32_t type, const std::vector<uint8_t>& bytes) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmSendChunk(uint32_t type, size_t len, const uint8_t* buf) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmSendChunkV(uint32_t type, const iovec* iov, int iov_count) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static void VisitRoots(RootCallback* callback, void* arg) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| /* |
| * Recent allocation tracking support. |
| */ |
| static void RecordAllocation(mirror::Class* type, size_t byte_count) |
| LOCKS_EXCLUDED(alloc_tracker_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void SetAllocTrackingEnabled(bool enabled) LOCKS_EXCLUDED(alloc_tracker_lock_); |
| static bool IsAllocTrackingEnabled() { |
| return recent_allocation_records_ != nullptr; |
| } |
| static jbyteArray GetRecentAllocations() |
| LOCKS_EXCLUDED(alloc_tracker_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static size_t HeadIndex() EXCLUSIVE_LOCKS_REQUIRED(alloc_tracker_lock_); |
| static void DumpRecentAllocations() LOCKS_EXCLUDED(alloc_tracker_lock_); |
| |
| enum HpifWhen { |
| HPIF_WHEN_NEVER = 0, |
| HPIF_WHEN_NOW = 1, |
| HPIF_WHEN_NEXT_GC = 2, |
| HPIF_WHEN_EVERY_GC = 3 |
| }; |
| static int DdmHandleHpifChunk(HpifWhen when) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| enum HpsgWhen { |
| HPSG_WHEN_NEVER = 0, |
| HPSG_WHEN_EVERY_GC = 1, |
| }; |
| enum HpsgWhat { |
| HPSG_WHAT_MERGED_OBJECTS = 0, |
| HPSG_WHAT_DISTINCT_OBJECTS = 1, |
| }; |
| static bool DdmHandleHpsgNhsgChunk(HpsgWhen when, HpsgWhat what, bool native); |
| |
| static void DdmSendHeapInfo(HpifWhen reason) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void DdmSendHeapSegments(bool native) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| private: |
| static void DdmBroadcast(bool connect) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| static void PostThreadStartOrStop(Thread*, uint32_t) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static void PostLocationEvent(mirror::ArtMethod* method, int pcOffset, |
| mirror::Object* thisPtr, int eventFlags, |
| const JValue* return_value) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static JDWP::ObjectId GetThisObjectIdForEvent(mirror::Object* this_object) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static void ProcessDeoptimizationRequest(const DeoptimizationRequest& request) |
| EXCLUSIVE_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static void RequestDeoptimizationLocked(const DeoptimizationRequest& req) |
| EXCLUSIVE_LOCKS_REQUIRED(deoptimization_lock_) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static Mutex* alloc_tracker_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER; |
| |
| static AllocRecord* recent_allocation_records_ PT_GUARDED_BY(alloc_tracker_lock_); |
| static size_t alloc_record_max_ GUARDED_BY(alloc_tracker_lock_); |
| static size_t alloc_record_head_ GUARDED_BY(alloc_tracker_lock_); |
| static size_t alloc_record_count_ GUARDED_BY(alloc_tracker_lock_); |
| |
| // Guards deoptimization requests. |
| // TODO rename to instrumentation_update_lock. |
| static Mutex* deoptimization_lock_ ACQUIRED_AFTER(Locks::breakpoint_lock_); |
| |
| // Deoptimization requests to be processed each time the event list is updated. This is used when |
| // registering and unregistering events so we do not deoptimize while holding the event list |
| // lock. |
| // TODO rename to instrumentation_requests. |
| static std::vector<DeoptimizationRequest> deoptimization_requests_ GUARDED_BY(deoptimization_lock_); |
| |
| // Count the number of events requiring full deoptimization. When the counter is > 0, everything |
| // is deoptimized, otherwise everything is undeoptimized. |
| // Note: we fully deoptimize on the first event only (when the counter is set to 1). We fully |
| // undeoptimize when the last event is unregistered (when the counter is set to 0). |
| static size_t full_deoptimization_event_count_ GUARDED_BY(deoptimization_lock_); |
| |
| // Count the number of full undeoptimization requests delayed to next resume or end of debug |
| // session. |
| static size_t delayed_full_undeoptimization_count_ GUARDED_BY(deoptimization_lock_); |
| |
| static size_t* GetReferenceCounterForEvent(uint32_t instrumentation_event); |
| |
| // Instrumentation event reference counters. |
| // TODO we could use an array instead of having all these dedicated counters. Instrumentation |
| // events are bits of a mask so we could convert them to array index. |
| static size_t dex_pc_change_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static size_t method_enter_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static size_t method_exit_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static size_t field_read_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static size_t field_write_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static size_t exception_catch_event_ref_count_ GUARDED_BY(deoptimization_lock_); |
| static uint32_t instrumentation_events_ GUARDED_BY(Locks::mutator_lock_); |
| |
| DISALLOW_COPY_AND_ASSIGN(Dbg); |
| }; |
| |
| #define CHUNK_TYPE(_name) \ |
| static_cast<uint32_t>((_name)[0] << 24 | (_name)[1] << 16 | (_name)[2] << 8 | (_name)[3]) |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_DEBUGGER_H_ |