| /* |
| * Copyright (C) 2014 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. |
| */ |
| |
| #ifndef ART_RUNTIME_QUICK_EXCEPTION_HANDLER_H_ |
| #define ART_RUNTIME_QUICK_EXCEPTION_HANDLER_H_ |
| |
| #include "base/logging.h" |
| #include "base/macros.h" |
| #include "base/mutex.h" |
| #include "stack.h" // StackReference |
| |
| namespace art { |
| |
| namespace mirror { |
| class ArtMethod; |
| class Throwable; |
| } // namespace mirror |
| class Context; |
| class Thread; |
| class ThrowLocation; |
| class ShadowFrame; |
| |
| // Manages exception delivery for Quick backend. |
| class QuickExceptionHandler { |
| public: |
| QuickExceptionHandler(Thread* self, bool is_deoptimization) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| ~QuickExceptionHandler() { |
| LOG(FATAL) << "UNREACHABLE"; // Expected to take long jump. |
| UNREACHABLE(); |
| } |
| |
| void FindCatch(const ThrowLocation& throw_location, mirror::Throwable* exception) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| void DeoptimizeStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| void UpdateInstrumentationStack() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| NO_RETURN void DoLongJump() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| void SetHandlerQuickFrame(StackReference<mirror::ArtMethod>* handler_quick_frame) { |
| handler_quick_frame_ = handler_quick_frame; |
| } |
| |
| void SetHandlerQuickFramePc(uintptr_t handler_quick_frame_pc) { |
| handler_quick_frame_pc_ = handler_quick_frame_pc; |
| } |
| |
| mirror::ArtMethod* GetHandlerMethod() const { |
| return handler_method_; |
| } |
| |
| void SetHandlerMethod(mirror::ArtMethod* handler_quick_method) { |
| handler_method_ = handler_quick_method; |
| } |
| |
| uint32_t GetHandlerDexPc() const { |
| return handler_dex_pc_; |
| } |
| |
| void SetHandlerDexPc(uint32_t dex_pc) { |
| handler_dex_pc_ = dex_pc; |
| } |
| |
| void SetClearException(bool clear_exception) { |
| clear_exception_ = clear_exception; |
| } |
| |
| void SetHandlerFrameDepth(size_t frame_depth) { |
| handler_frame_depth_ = frame_depth; |
| } |
| |
| private: |
| Thread* const self_; |
| Context* const context_; |
| const bool is_deoptimization_; |
| // Is method tracing active? |
| const bool method_tracing_active_; |
| // Quick frame with found handler or last frame if no handler found. |
| StackReference<mirror::ArtMethod>* handler_quick_frame_; |
| // PC to branch to for the handler. |
| uintptr_t handler_quick_frame_pc_; |
| // The handler method to report to the debugger. |
| mirror::ArtMethod* handler_method_; |
| // The handler's dex PC, zero implies an uncaught exception. |
| uint32_t handler_dex_pc_; |
| // Should the exception be cleared as the catch block has no move-exception? |
| bool clear_exception_; |
| // Frame depth of the catch handler or the upcall. |
| size_t handler_frame_depth_; |
| |
| DISALLOW_COPY_AND_ASSIGN(QuickExceptionHandler); |
| }; |
| |
| } // namespace art |
| #endif // ART_RUNTIME_QUICK_EXCEPTION_HANDLER_H_ |