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      1 /*
      2  * Copyright (C) 2013 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef ART_RUNTIME_THROW_LOCATION_H_
     18 #define ART_RUNTIME_THROW_LOCATION_H_
     19 
     20 #include "base/macros.h"
     21 #include "root_visitor.h"
     22 
     23 #include <stdint.h>
     24 #include <string>
     25 
     26 namespace art {
     27 
     28 namespace mirror {
     29 class ArtMethod;
     30 class Object;
     31 }  // mirror
     32 
     33 class PACKED(4) ThrowLocation {
     34  public:
     35   ThrowLocation() {
     36     Clear();
     37   }
     38 
     39   ThrowLocation(mirror::Object* throw_this_object, mirror::ArtMethod* throw_method,
     40                 uint32_t throw_dex_pc) :
     41       this_object_(throw_this_object),
     42       method_(throw_method),
     43       dex_pc_(throw_dex_pc) {}
     44 
     45   mirror::Object* GetThis() const {
     46     return this_object_;
     47   }
     48 
     49   mirror::ArtMethod* GetMethod() const {
     50     return method_;
     51   }
     52 
     53   uint32_t GetDexPc() const {
     54     return dex_pc_;
     55   }
     56 
     57   void Clear() {
     58     this_object_ = NULL;
     59     method_ = NULL;
     60     dex_pc_ = -1;
     61   }
     62 
     63   std::string Dump() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
     64 
     65   void VisitRoots(RootVisitor* visitor, void* arg);
     66 
     67  private:
     68   // The 'this' reference of the throwing method.
     69   mirror::Object* this_object_;
     70   // The throwing method.
     71   mirror::ArtMethod* method_;
     72   // The instruction within the throwing method.
     73   uint32_t dex_pc_;
     74 };
     75 
     76 }  // namespace art
     77 
     78 #endif  // ART_RUNTIME_THROW_LOCATION_H_
     79