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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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