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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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1073 for (Object* prototype = *obj; !prototype->IsNull(); | 1073 for (Object* prototype = *obj; !prototype->IsNull(); |
1074 prototype = prototype->GetPrototype()) { | 1074 prototype = prototype->GetPrototype()) { |
1075 if (!prototype->IsJSObject()) return false; | 1075 if (!prototype->IsJSObject()) return false; |
1076 if (JSObject::cast(prototype)->map()->constructor() == error_constructor) { | 1076 if (JSObject::cast(prototype)->map()->constructor() == error_constructor) { |
1077 return true; | 1077 return true; |
1078 } | 1078 } |
1079 } | 1079 } |
1080 return false; | 1080 return false; |
1081 } | 1081 } |
1082 | 1082 |
| 1083 static int fatal_exception_depth = 0; |
1083 | 1084 |
1084 void Isolate::DoThrow(Object* exception, MessageLocation* location) { | 1085 void Isolate::DoThrow(Object* exception, MessageLocation* location) { |
1085 ASSERT(!has_pending_exception()); | 1086 ASSERT(!has_pending_exception()); |
1086 | 1087 |
1087 HandleScope scope; | 1088 HandleScope scope; |
1088 Handle<Object> exception_handle(exception); | 1089 Handle<Object> exception_handle(exception); |
1089 | 1090 |
1090 // Determine reporting and whether the exception is caught externally. | 1091 // Determine reporting and whether the exception is caught externally. |
1091 bool catchable_by_javascript = is_catchable_by_javascript(exception); | 1092 bool catchable_by_javascript = is_catchable_by_javascript(exception); |
1092 bool can_be_caught_externally = false; | 1093 bool can_be_caught_externally = false; |
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1143 location, | 1144 location, |
1144 HandleVector<Object>(&exception_handle, 1), | 1145 HandleVector<Object>(&exception_handle, 1), |
1145 stack_trace, | 1146 stack_trace, |
1146 stack_trace_object); | 1147 stack_trace_object); |
1147 thread_local_top()->pending_message_obj_ = *message_obj; | 1148 thread_local_top()->pending_message_obj_ = *message_obj; |
1148 if (location != NULL) { | 1149 if (location != NULL) { |
1149 thread_local_top()->pending_message_script_ = *location->script(); | 1150 thread_local_top()->pending_message_script_ = *location->script(); |
1150 thread_local_top()->pending_message_start_pos_ = location->start_pos(); | 1151 thread_local_top()->pending_message_start_pos_ = location->start_pos(); |
1151 thread_local_top()->pending_message_end_pos_ = location->end_pos(); | 1152 thread_local_top()->pending_message_end_pos_ = location->end_pos(); |
1152 } | 1153 } |
| 1154 |
| 1155 // If the abort-on-uncaught-exception flag is specified, abort on any |
| 1156 // exception not caught by JavaScript, even when an external handler is |
| 1157 // present. This flag is intended for use by JavaScript developers, so |
| 1158 // print a user-friendly stack trace (not an internal one). |
| 1159 if (fatal_exception_depth == 0 && |
| 1160 FLAG_abort_on_uncaught_exception && |
| 1161 (report_exception || can_be_caught_externally)) { |
| 1162 fatal_exception_depth++; |
| 1163 fprintf(stderr, "%s\n\nFROM\n", |
| 1164 *MessageHandler::GetLocalizedMessage(this, message_obj)); |
| 1165 PrintCurrentStackTrace(stderr); |
| 1166 OS::Abort(); |
| 1167 } |
1153 } else if (location != NULL && !location->script().is_null()) { | 1168 } else if (location != NULL && !location->script().is_null()) { |
1154 // We are bootstrapping and caught an error where the location is set | 1169 // We are bootstrapping and caught an error where the location is set |
1155 // and we have a script for the location. | 1170 // and we have a script for the location. |
1156 // In this case we could have an extension (or an internal error | 1171 // In this case we could have an extension (or an internal error |
1157 // somewhere) and we print out the line number at which the error occured | 1172 // somewhere) and we print out the line number at which the error occured |
1158 // to the console for easier debugging. | 1173 // to the console for easier debugging. |
1159 int line_number = GetScriptLineNumberSafe(location->script(), | 1174 int line_number = GetScriptLineNumberSafe(location->script(), |
1160 location->start_pos()); | 1175 location->start_pos()); |
1161 if (exception->IsString()) { | 1176 if (exception->IsString()) { |
1162 OS::PrintError( | 1177 OS::PrintError( |
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2058 | 2073 |
2059 #ifdef DEBUG | 2074 #ifdef DEBUG |
2060 #define ISOLATE_FIELD_OFFSET(type, name, ignored) \ | 2075 #define ISOLATE_FIELD_OFFSET(type, name, ignored) \ |
2061 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_); | 2076 const intptr_t Isolate::name##_debug_offset_ = OFFSET_OF(Isolate, name##_); |
2062 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) | 2077 ISOLATE_INIT_LIST(ISOLATE_FIELD_OFFSET) |
2063 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) | 2078 ISOLATE_INIT_ARRAY_LIST(ISOLATE_FIELD_OFFSET) |
2064 #undef ISOLATE_FIELD_OFFSET | 2079 #undef ISOLATE_FIELD_OFFSET |
2065 #endif | 2080 #endif |
2066 | 2081 |
2067 } } // namespace v8::internal | 2082 } } // namespace v8::internal |
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