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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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1388 }; | 1388 }; |
1389 | 1389 |
1390 | 1390 |
1391 // Support for checking for stack-overflows in C++ code. | 1391 // Support for checking for stack-overflows in C++ code. |
1392 class StackLimitCheck BASE_EMBEDDED { | 1392 class StackLimitCheck BASE_EMBEDDED { |
1393 public: | 1393 public: |
1394 explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { } | 1394 explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { } |
1395 | 1395 |
1396 bool HasOverflowed() const { | 1396 bool HasOverflowed() const { |
1397 StackGuard* stack_guard = isolate_->stack_guard(); | 1397 StackGuard* stack_guard = isolate_->stack_guard(); |
1398 // Stack has overflowed in C++ code only if stack pointer exceeds the C++ | 1398 return (reinterpret_cast<uintptr_t>(this) < stack_guard->real_climit()); |
1399 // stack guard and the limits are not set to interrupt values. | |
1400 // TODO(214): Stack overflows are ignored if a interrupt is pending. This | |
1401 // code should probably always use the initial C++ limit. | |
1402 return (reinterpret_cast<uintptr_t>(this) < stack_guard->climit()) && | |
1403 stack_guard->IsStackOverflow(); | |
1404 } | 1399 } |
1405 private: | 1400 private: |
1406 Isolate* isolate_; | 1401 Isolate* isolate_; |
1407 }; | 1402 }; |
1408 | 1403 |
1409 | 1404 |
1410 // Support for temporarily postponing interrupts. When the outermost | 1405 // Support for temporarily postponing interrupts. When the outermost |
1411 // postpone scope is left the interrupts will be re-enabled and any | 1406 // postpone scope is left the interrupts will be re-enabled and any |
1412 // interrupts that occurred while in the scope will be taken into | 1407 // interrupts that occurred while in the scope will be taken into |
1413 // account. | 1408 // account. |
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1445 | 1440 |
1446 // Mark the native context with out of memory. | 1441 // Mark the native context with out of memory. |
1447 inline void Context::mark_out_of_memory() { | 1442 inline void Context::mark_out_of_memory() { |
1448 native_context()->set_out_of_memory(HEAP->true_value()); | 1443 native_context()->set_out_of_memory(HEAP->true_value()); |
1449 } | 1444 } |
1450 | 1445 |
1451 | 1446 |
1452 } } // namespace v8::internal | 1447 } } // namespace v8::internal |
1453 | 1448 |
1454 #endif // V8_ISOLATE_H_ | 1449 #endif // V8_ISOLATE_H_ |
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