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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. | 
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without | 
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are | 
| 4 // met: | 4 // met: | 
| 5 // | 5 // | 
| 6 //     * Redistributions of source code must retain the above copyright | 6 //     * Redistributions of source code must retain the above copyright | 
| 7 //       notice, this list of conditions and the following disclaimer. | 7 //       notice, this list of conditions and the following disclaimer. | 
| 8 //     * Redistributions in binary form must reproduce the above | 8 //     * Redistributions in binary form must reproduce the above | 
| 9 //       copyright notice, this list of conditions and the following | 9 //       copyright notice, this list of conditions and the following | 
| 10 //       disclaimer in the documentation and/or other materials provided | 10 //       disclaimer in the documentation and/or other materials provided | 
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| 789 | 789 | 
| 790 | 790 | 
| 791 class StackFrameIteratorBase BASE_EMBEDDED { | 791 class StackFrameIteratorBase BASE_EMBEDDED { | 
| 792  public: | 792  public: | 
| 793   Isolate* isolate() const { return isolate_; } | 793   Isolate* isolate() const { return isolate_; } | 
| 794 | 794 | 
| 795   bool done() const { return frame_ == NULL; } | 795   bool done() const { return frame_ == NULL; } | 
| 796 | 796 | 
| 797  protected: | 797  protected: | 
| 798   // An iterator that iterates over a given thread's stack. | 798   // An iterator that iterates over a given thread's stack. | 
| 799   StackFrameIteratorBase(Isolate* isolate, bool can_access_heap_objects); | 799   StackFrameIteratorBase(Isolate* isolate, | 
| 800 | 800                          bool can_access_heap_objects, | 
|  | 801                          bool allow_builtins_on_stack); | 
| 801   Isolate* isolate_; | 802   Isolate* isolate_; | 
| 802 #define DECLARE_SINGLETON(ignore, type) type type##_; | 803 #define DECLARE_SINGLETON(ignore, type) type type##_; | 
| 803   STACK_FRAME_TYPE_LIST(DECLARE_SINGLETON) | 804   STACK_FRAME_TYPE_LIST(DECLARE_SINGLETON) | 
| 804 #undef DECLARE_SINGLETON | 805 #undef DECLARE_SINGLETON | 
| 805   StackFrame* frame_; | 806   StackFrame* frame_; | 
| 806   StackHandler* handler_; | 807   StackHandler* handler_; | 
| 807   const bool can_access_heap_objects_; | 808   const bool can_access_heap_objects_; | 
|  | 809   const bool allow_builtins_on_stack_; | 
| 808 | 810 | 
| 809   StackHandler* handler() const { | 811   StackHandler* handler() const { | 
| 810     ASSERT(!done()); | 812     ASSERT(!done()); | 
| 811     return handler_; | 813     return handler_; | 
| 812   } | 814   } | 
| 813 | 815 | 
| 814   // Get the type-specific frame singleton in a given state. | 816   // Get the type-specific frame singleton in a given state. | 
| 815   StackFrame* SingletonFor(StackFrame::Type type, StackFrame::State* state); | 817   StackFrame* SingletonFor(StackFrame::Type type, StackFrame::State* state); | 
| 816   // A helper function, can return a NULL pointer. | 818   // A helper function, can return a NULL pointer. | 
| 817   StackFrame* SingletonFor(StackFrame::Type type); | 819   StackFrame* SingletonFor(StackFrame::Type type); | 
| 818 | 820 | 
| 819  private: | 821  private: | 
| 820   friend class StackFrame; | 822   friend class StackFrame; | 
| 821   DISALLOW_COPY_AND_ASSIGN(StackFrameIteratorBase); | 823   DISALLOW_COPY_AND_ASSIGN(StackFrameIteratorBase); | 
| 822 }; | 824 }; | 
| 823 | 825 | 
| 824 | 826 | 
| 825 class StackFrameIterator: public StackFrameIteratorBase { | 827 class StackFrameIterator: public StackFrameIteratorBase { | 
| 826  public: | 828  public: | 
| 827   // An iterator that iterates over the isolate's current thread's stack, | 829   // An iterator that iterates over the isolate's current thread's stack, | 
| 828   explicit StackFrameIterator(Isolate* isolate); | 830   StackFrameIterator(Isolate* isolate, bool allow_builtins_on_stack = false); | 
| 829   // An iterator that iterates over a given thread's stack. | 831   // An iterator that iterates over a given thread's stack. | 
| 830   StackFrameIterator(Isolate* isolate, ThreadLocalTop* t); | 832   StackFrameIterator(Isolate* isolate, ThreadLocalTop* t); | 
| 831 | 833 | 
| 832   StackFrame* frame() const { | 834   StackFrame* frame() const { | 
| 833     ASSERT(!done()); | 835     ASSERT(!done()); | 
| 834     return frame_; | 836     return frame_; | 
| 835   } | 837   } | 
| 836   void Advance(); | 838   void Advance(); | 
| 837 | 839 | 
| 838  private: | 840  private: | 
| 839   // Go back to the first frame. | 841   // Go back to the first frame. | 
| 840   void Reset(ThreadLocalTop* top); | 842   void Reset(ThreadLocalTop* top); | 
| 841 | 843 | 
| 842   DISALLOW_COPY_AND_ASSIGN(StackFrameIterator); | 844   DISALLOW_COPY_AND_ASSIGN(StackFrameIterator); | 
| 843 }; | 845 }; | 
| 844 | 846 | 
| 845 | 847 | 
| 846 // Iterator that supports iterating through all JavaScript frames. | 848 // Iterator that supports iterating through all JavaScript frames. | 
| 847 class JavaScriptFrameIterator BASE_EMBEDDED { | 849 class JavaScriptFrameIterator BASE_EMBEDDED { | 
| 848  public: | 850  public: | 
| 849   inline explicit JavaScriptFrameIterator(Isolate* isolate); | 851   inline JavaScriptFrameIterator(Isolate* isolate, | 
|  | 852                                  bool allow_builtins_on_stack = false); | 
| 850   inline JavaScriptFrameIterator(Isolate* isolate, ThreadLocalTop* top); | 853   inline JavaScriptFrameIterator(Isolate* isolate, ThreadLocalTop* top); | 
| 851   // Skip frames until the frame with the given id is reached. | 854   // Skip frames until the frame with the given id is reached. | 
| 852   JavaScriptFrameIterator(Isolate* isolate, StackFrame::Id id); | 855   JavaScriptFrameIterator(Isolate* isolate, StackFrame::Id id); | 
| 853 | 856 | 
| 854   inline JavaScriptFrame* frame() const; | 857   inline JavaScriptFrame* frame() const; | 
| 855 | 858 | 
| 856   bool done() const { return iterator_.done(); } | 859   bool done() const { return iterator_.done(); } | 
| 857   void Advance(); | 860   void Advance(); | 
| 858 | 861 | 
| 859   // Advance to the frame holding the arguments for the current | 862   // Advance to the frame holding the arguments for the current | 
| 860   // frame. This only affects the current frame if it has adapted | 863   // frame. This only affects the current frame if it has adapted | 
| 861   // arguments. | 864   // arguments. | 
| 862   void AdvanceToArgumentsFrame(); | 865   void AdvanceToArgumentsFrame(); | 
| 863 | 866 | 
| 864  private: | 867  private: | 
| 865   StackFrameIterator iterator_; | 868   StackFrameIterator iterator_; | 
| 866 }; | 869 }; | 
| 867 | 870 | 
| 868 | 871 | 
| 869 // NOTE: The stack trace frame iterator is an iterator that only | 872 // NOTE: The stack trace frame iterator is an iterator that only | 
| 870 // traverse proper JavaScript frames; that is JavaScript frames that | 873 // traverse proper JavaScript frames; that is JavaScript frames that | 
| 871 // have proper JavaScript functions. This excludes the problematic | 874 // have proper JavaScript functions. This excludes the problematic | 
| 872 // functions in runtime.js. | 875 // functions in runtime.js. | 
| 873 class StackTraceFrameIterator: public JavaScriptFrameIterator { | 876 class StackTraceFrameIterator: public JavaScriptFrameIterator { | 
| 874  public: | 877  public: | 
| 875   explicit StackTraceFrameIterator(Isolate* isolate); | 878   StackTraceFrameIterator(Isolate* isolate, | 
|  | 879                           bool allow_builtins_on_stack = false); | 
| 876   void Advance(); | 880   void Advance(); | 
| 877 | 881 | 
| 878  private: | 882  private: | 
| 879   bool IsValidFrame(); | 883   bool IsValidFrame(); | 
| 880 }; | 884 }; | 
| 881 | 885 | 
| 882 | 886 | 
| 883 class SafeStackFrameIterator: public StackFrameIteratorBase { | 887 class SafeStackFrameIterator: public StackFrameIteratorBase { | 
| 884  public: | 888  public: | 
| 885   SafeStackFrameIterator(Isolate* isolate, | 889   SafeStackFrameIterator(Isolate* isolate, | 
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| 929 }; | 933 }; | 
| 930 | 934 | 
| 931 | 935 | 
| 932 // Reads all frames on the current stack and copies them into the current | 936 // Reads all frames on the current stack and copies them into the current | 
| 933 // zone memory. | 937 // zone memory. | 
| 934 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); | 938 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone); | 
| 935 | 939 | 
| 936 } }  // namespace v8::internal | 940 } }  // namespace v8::internal | 
| 937 | 941 | 
| 938 #endif  // V8_FRAMES_H_ | 942 #endif  // V8_FRAMES_H_ | 
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