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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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1431 | 1431 |
1432 // Support for checking for stack-overflows in C++ code. | 1432 // Support for checking for stack-overflows in C++ code. |
1433 class StackLimitCheck BASE_EMBEDDED { | 1433 class StackLimitCheck BASE_EMBEDDED { |
1434 public: | 1434 public: |
1435 explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { } | 1435 explicit StackLimitCheck(Isolate* isolate) : isolate_(isolate) { } |
1436 | 1436 |
1437 bool HasOverflowed() const { | 1437 bool HasOverflowed() const { |
1438 StackGuard* stack_guard = isolate_->stack_guard(); | 1438 StackGuard* stack_guard = isolate_->stack_guard(); |
1439 return (reinterpret_cast<uintptr_t>(this) < stack_guard->real_climit()); | 1439 return (reinterpret_cast<uintptr_t>(this) < stack_guard->real_climit()); |
1440 } | 1440 } |
1441 bool WillOverflow(uint32_t additionalUsage) const { | |
1442 StackGuard* stack_guard = isolate_->stack_guard(); | |
1443 return (reinterpret_cast<uintptr_t>(this) < stack_guard->real_climit() + | |
1444 additionalUsage); | |
1445 } | |
1446 private: | 1441 private: |
1447 Isolate* isolate_; | 1442 Isolate* isolate_; |
1448 }; | 1443 }; |
1449 | 1444 |
1450 | 1445 |
1451 // Support for temporarily postponing interrupts. When the outermost | 1446 // Support for temporarily postponing interrupts. When the outermost |
1452 // postpone scope is left the interrupts will be re-enabled and any | 1447 // postpone scope is left the interrupts will be re-enabled and any |
1453 // interrupts that occurred while in the scope will be taken into | 1448 // interrupts that occurred while in the scope will be taken into |
1454 // account. | 1449 // account. |
1455 class PostponeInterruptsScope BASE_EMBEDDED { | 1450 class PostponeInterruptsScope BASE_EMBEDDED { |
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1537 } | 1532 } |
1538 | 1533 |
1539 EmbeddedVector<char, 128> filename_; | 1534 EmbeddedVector<char, 128> filename_; |
1540 FILE* file_; | 1535 FILE* file_; |
1541 int scope_depth_; | 1536 int scope_depth_; |
1542 }; | 1537 }; |
1543 | 1538 |
1544 } } // namespace v8::internal | 1539 } } // namespace v8::internal |
1545 | 1540 |
1546 #endif // V8_ISOLATE_H_ | 1541 #endif // V8_ISOLATE_H_ |
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