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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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273 return reinterpret_cast<Address>(&always_allocate_scope_depth_); | 273 return reinterpret_cast<Address>(&always_allocate_scope_depth_); |
274 } | 274 } |
275 | 275 |
276 static Address* NewSpaceAllocationTopAddress() { | 276 static Address* NewSpaceAllocationTopAddress() { |
277 return new_space_.allocation_top_address(); | 277 return new_space_.allocation_top_address(); |
278 } | 278 } |
279 static Address* NewSpaceAllocationLimitAddress() { | 279 static Address* NewSpaceAllocationLimitAddress() { |
280 return new_space_.allocation_limit_address(); | 280 return new_space_.allocation_limit_address(); |
281 } | 281 } |
282 | 282 |
| 283 // Uncommit unused semi space. |
| 284 static bool UncommitFromSpace() { return new_space_.UncommitFromSpace(); } |
| 285 |
283 #ifdef ENABLE_HEAP_PROTECTION | 286 #ifdef ENABLE_HEAP_PROTECTION |
284 // Protect/unprotect the heap by marking all spaces read-only/writable. | 287 // Protect/unprotect the heap by marking all spaces read-only/writable. |
285 static void Protect(); | 288 static void Protect(); |
286 static void Unprotect(); | 289 static void Unprotect(); |
287 #endif | 290 #endif |
288 | 291 |
289 // Allocates and initializes a new JavaScript object based on a | 292 // Allocates and initializes a new JavaScript object based on a |
290 // constructor. | 293 // constructor. |
291 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation | 294 // Returns Failure::RetryAfterGC(requested_bytes, space) if the allocation |
292 // failed. | 295 // failed. |
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787 static inline void ScavengeObject(HeapObject** p, HeapObject* object); | 790 static inline void ScavengeObject(HeapObject** p, HeapObject* object); |
788 | 791 |
789 // Clear a range of remembered set addresses corresponding to the object | 792 // Clear a range of remembered set addresses corresponding to the object |
790 // area address 'start' with size 'size_in_bytes', eg, when adding blocks | 793 // area address 'start' with size 'size_in_bytes', eg, when adding blocks |
791 // to the free list. | 794 // to the free list. |
792 static void ClearRSetRange(Address start, int size_in_bytes); | 795 static void ClearRSetRange(Address start, int size_in_bytes); |
793 | 796 |
794 // Rebuild remembered set in old and map spaces. | 797 // Rebuild remembered set in old and map spaces. |
795 static void RebuildRSets(); | 798 static void RebuildRSets(); |
796 | 799 |
| 800 // Commits from space if it is uncommitted. |
| 801 static void EnsureFromSpaceIsCommitted(); |
| 802 |
797 // | 803 // |
798 // Support for the API. | 804 // Support for the API. |
799 // | 805 // |
800 | 806 |
801 static bool CreateApiObjects(); | 807 static bool CreateApiObjects(); |
802 | 808 |
803 // Attempt to find the number in a small cache. If we finds it, return | 809 // Attempt to find the number in a small cache. If we finds it, return |
804 // the string representation of the number. Otherwise return undefined. | 810 // the string representation of the number. Otherwise return undefined. |
805 static Object* GetNumberStringCache(Object* number); | 811 static Object* GetNumberStringCache(Object* number); |
806 | 812 |
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1461 int marked_count_; | 1467 int marked_count_; |
1462 | 1468 |
1463 // The count from the end of the previous full GC. Will be zero if there | 1469 // The count from the end of the previous full GC. Will be zero if there |
1464 // was no previous full GC. | 1470 // was no previous full GC. |
1465 int previous_marked_count_; | 1471 int previous_marked_count_; |
1466 }; | 1472 }; |
1467 | 1473 |
1468 } } // namespace v8::internal | 1474 } } // namespace v8::internal |
1469 | 1475 |
1470 #endif // V8_HEAP_H_ | 1476 #endif // V8_HEAP_H_ |
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