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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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887 // Reserves a range of virtual memory, but does not commit any of it. | 887 // Reserves a range of virtual memory, but does not commit any of it. |
888 // Can only be called once, at heap initialization time. | 888 // Can only be called once, at heap initialization time. |
889 // Returns false on failure. | 889 // Returns false on failure. |
890 bool SetUp(const size_t requested_size); | 890 bool SetUp(const size_t requested_size); |
891 | 891 |
892 // Frees the range of virtual memory, and frees the data structures used to | 892 // Frees the range of virtual memory, and frees the data structures used to |
893 // manage it. | 893 // manage it. |
894 void TearDown(); | 894 void TearDown(); |
895 | 895 |
896 bool exists() { return this != NULL && code_range_ != NULL; } | 896 bool exists() { return this != NULL && code_range_ != NULL; } |
| 897 Address start() { |
| 898 if (this == NULL || code_range_ == NULL) return NULL; |
| 899 return static_cast<Address>(code_range_->address()); |
| 900 } |
897 bool contains(Address address) { | 901 bool contains(Address address) { |
898 if (this == NULL || code_range_ == NULL) return false; | 902 if (this == NULL || code_range_ == NULL) return false; |
899 Address start = static_cast<Address>(code_range_->address()); | 903 Address start = static_cast<Address>(code_range_->address()); |
900 return start <= address && address < start + code_range_->size(); | 904 return start <= address && address < start + code_range_->size(); |
901 } | 905 } |
902 | 906 |
903 // Allocates a chunk of memory from the large-object portion of | 907 // Allocates a chunk of memory from the large-object portion of |
904 // the code range. On platforms with no separate code range, should | 908 // the code range. On platforms with no separate code range, should |
905 // not be called. | 909 // not be called. |
906 MUST_USE_RESULT Address AllocateRawMemory(const size_t requested_size, | 910 MUST_USE_RESULT Address AllocateRawMemory(const size_t requested_size, |
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2823 } | 2827 } |
2824 // Must be small, since an iteration is used for lookup. | 2828 // Must be small, since an iteration is used for lookup. |
2825 static const int kMaxComments = 64; | 2829 static const int kMaxComments = 64; |
2826 }; | 2830 }; |
2827 #endif | 2831 #endif |
2828 | 2832 |
2829 | 2833 |
2830 } } // namespace v8::internal | 2834 } } // namespace v8::internal |
2831 | 2835 |
2832 #endif // V8_SPACES_H_ | 2836 #endif // V8_SPACES_H_ |
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