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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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761 return Construct(OUT_OF_MEMORY_EXCEPTION); | 761 return Construct(OUT_OF_MEMORY_EXCEPTION); |
762 } | 762 } |
763 | 763 |
764 | 764 |
765 int Failure::value() const { | 765 int Failure::value() const { |
766 return static_cast<int>(reinterpret_cast<intptr_t>(this) >> kFailureTagSize); | 766 return static_cast<int>(reinterpret_cast<intptr_t>(this) >> kFailureTagSize); |
767 } | 767 } |
768 | 768 |
769 | 769 |
770 Failure* Failure::RetryAfterGC(int requested_bytes) { | 770 Failure* Failure::RetryAfterGC(int requested_bytes) { |
| 771 // Assert that the space encoding fits in the three bytes allotted for it. |
| 772 ASSERT((LAST_SPACE & ~kSpaceTagMask) == 0); |
771 int requested = requested_bytes >> kObjectAlignmentBits; | 773 int requested = requested_bytes >> kObjectAlignmentBits; |
772 int value = (requested << kSpaceTagSize) | NEW_SPACE; | 774 int value = (requested << kSpaceTagSize) | NEW_SPACE; |
773 ASSERT(value >> kSpaceTagSize == requested); | 775 ASSERT(value >> kSpaceTagSize == requested); |
774 ASSERT(Smi::IsValid(value)); | 776 ASSERT(Smi::IsValid(value)); |
775 ASSERT(value == ((value << kFailureTypeTagSize) >> kFailureTypeTagSize)); | 777 ASSERT(value == ((value << kFailureTypeTagSize) >> kFailureTypeTagSize)); |
776 ASSERT(Smi::IsValid(value << kFailureTypeTagSize)); | 778 ASSERT(Smi::IsValid(value << kFailureTypeTagSize)); |
777 return Construct(RETRY_AFTER_GC, value); | 779 return Construct(RETRY_AFTER_GC, value); |
778 } | 780 } |
779 | 781 |
780 | 782 |
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2696 #undef WRITE_INT_FIELD | 2698 #undef WRITE_INT_FIELD |
2697 #undef READ_SHORT_FIELD | 2699 #undef READ_SHORT_FIELD |
2698 #undef WRITE_SHORT_FIELD | 2700 #undef WRITE_SHORT_FIELD |
2699 #undef READ_BYTE_FIELD | 2701 #undef READ_BYTE_FIELD |
2700 #undef WRITE_BYTE_FIELD | 2702 #undef WRITE_BYTE_FIELD |
2701 | 2703 |
2702 | 2704 |
2703 } } // namespace v8::internal | 2705 } } // namespace v8::internal |
2704 | 2706 |
2705 #endif // V8_OBJECTS_INL_H_ | 2707 #endif // V8_OBJECTS_INL_H_ |
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