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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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62 // | 62 // |
63 // The primary interest of the Tracker is to record function scope structures | 63 // The primary interest of the Tracker is to record function scope structures |
64 // in order to analyze whether function code maybe safely patched (with new | 64 // in order to analyze whether function code maybe safely patched (with new |
65 // code successfully reading existing data from function scopes). The Tracker | 65 // code successfully reading existing data from function scopes). The Tracker |
66 // also collects compiled function codes. | 66 // also collects compiled function codes. |
67 class LiveEditFunctionTracker { | 67 class LiveEditFunctionTracker { |
68 public: | 68 public: |
69 explicit LiveEditFunctionTracker(Isolate* isolate, FunctionLiteral* fun); | 69 explicit LiveEditFunctionTracker(Isolate* isolate, FunctionLiteral* fun); |
70 ~LiveEditFunctionTracker(); | 70 ~LiveEditFunctionTracker(); |
71 void RecordFunctionInfo(Handle<SharedFunctionInfo> info, | 71 void RecordFunctionInfo(Handle<SharedFunctionInfo> info, |
72 FunctionLiteral* lit); | 72 FunctionLiteral* lit, Zone* zone); |
73 void RecordRootFunctionInfo(Handle<Code> code); | 73 void RecordRootFunctionInfo(Handle<Code> code); |
74 | 74 |
75 static bool IsActive(Isolate* isolate); | 75 static bool IsActive(Isolate* isolate); |
76 | 76 |
77 private: | 77 private: |
78 #ifdef ENABLE_DEBUGGER_SUPPORT | 78 #ifdef ENABLE_DEBUGGER_SUPPORT |
79 Isolate* isolate_; | 79 Isolate* isolate_; |
80 #endif | 80 #endif |
81 }; | 81 }; |
82 | 82 |
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114 static void ReplaceRefToNestedFunction(Handle<JSValue> parent_function_shared, | 114 static void ReplaceRefToNestedFunction(Handle<JSValue> parent_function_shared, |
115 Handle<JSValue> orig_function_shared, | 115 Handle<JSValue> orig_function_shared, |
116 Handle<JSValue> subst_function_shared); | 116 Handle<JSValue> subst_function_shared); |
117 | 117 |
118 // Checks listed functions on stack and return array with corresponding | 118 // Checks listed functions on stack and return array with corresponding |
119 // FunctionPatchabilityStatus statuses; extra array element may | 119 // FunctionPatchabilityStatus statuses; extra array element may |
120 // contain general error message. Modifies the current stack and | 120 // contain general error message. Modifies the current stack and |
121 // has restart the lowest found frames and drops all other frames above | 121 // has restart the lowest found frames and drops all other frames above |
122 // if possible and if do_drop is true. | 122 // if possible and if do_drop is true. |
123 static Handle<JSArray> CheckAndDropActivations( | 123 static Handle<JSArray> CheckAndDropActivations( |
124 Handle<JSArray> shared_info_array, bool do_drop); | 124 Handle<JSArray> shared_info_array, bool do_drop, Zone* zone); |
125 | 125 |
126 // A copy of this is in liveedit-debugger.js. | 126 // A copy of this is in liveedit-debugger.js. |
127 enum FunctionPatchabilityStatus { | 127 enum FunctionPatchabilityStatus { |
128 FUNCTION_AVAILABLE_FOR_PATCH = 1, | 128 FUNCTION_AVAILABLE_FOR_PATCH = 1, |
129 FUNCTION_BLOCKED_ON_ACTIVE_STACK = 2, | 129 FUNCTION_BLOCKED_ON_ACTIVE_STACK = 2, |
130 FUNCTION_BLOCKED_ON_OTHER_STACK = 3, | 130 FUNCTION_BLOCKED_ON_OTHER_STACK = 3, |
131 FUNCTION_BLOCKED_UNDER_NATIVE_CODE = 4, | 131 FUNCTION_BLOCKED_UNDER_NATIVE_CODE = 4, |
132 FUNCTION_REPLACED_ON_ACTIVE_STACK = 5 | 132 FUNCTION_REPLACED_ON_ACTIVE_STACK = 5 |
133 }; | 133 }; |
134 | 134 |
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170 static void CalculateDifference(Input* input, | 170 static void CalculateDifference(Input* input, |
171 Output* result_writer); | 171 Output* result_writer); |
172 }; | 172 }; |
173 | 173 |
174 #endif // ENABLE_DEBUGGER_SUPPORT | 174 #endif // ENABLE_DEBUGGER_SUPPORT |
175 | 175 |
176 | 176 |
177 } } // namespace v8::internal | 177 } } // namespace v8::internal |
178 | 178 |
179 #endif /* V*_LIVEEDIT_H_ */ | 179 #endif /* V*_LIVEEDIT_H_ */ |
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