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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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