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Side by Side Diff: src/spaces-inl.h

Issue 5862002: Version 3.0.2. (Closed)
Patch Set: Created 10 years ago
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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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474 Page* page = Page::FromAddress(RoundUp(address(), Page::kPageSize)); 474 Page* page = Page::FromAddress(RoundUp(address(), Page::kPageSize));
475 return page->ObjectAreaStart(); 475 return page->ObjectAreaStart();
476 } 476 }
477 477
478 478
479 void LargeObjectChunk::Free(Executability executable) { 479 void LargeObjectChunk::Free(Executability executable) {
480 MemoryAllocator::FreeRawMemory(address(), size(), executable); 480 MemoryAllocator::FreeRawMemory(address(), size(), executable);
481 } 481 }
482 482
483 // ----------------------------------------------------------------------------- 483 // -----------------------------------------------------------------------------
484 // NewSpace 484 // LargeObjectSpace
485 485
486 MaybeObject* NewSpace::AllocateRawInternal(int size_in_bytes, 486 MaybeObject* NewSpace::AllocateRawInternal(int size_in_bytes,
487 AllocationInfo* alloc_info) { 487 AllocationInfo* alloc_info) {
488 Address new_top = alloc_info->top + size_in_bytes; 488 Address new_top = alloc_info->top + size_in_bytes;
489 if (new_top > alloc_info->limit) return Failure::RetryAfterGC(); 489 if (new_top > alloc_info->limit) return Failure::RetryAfterGC();
490 490
491 Object* obj = HeapObject::FromAddress(alloc_info->top); 491 Object* obj = HeapObject::FromAddress(alloc_info->top);
492 alloc_info->top = new_top; 492 alloc_info->top = new_top;
493 #ifdef DEBUG 493 #ifdef DEBUG
494 SemiSpace* space = 494 SemiSpace* space =
495 (alloc_info == &allocation_info_) ? &to_space_ : &from_space_; 495 (alloc_info == &allocation_info_) ? &to_space_ : &from_space_;
496 ASSERT(space->low() <= alloc_info->top 496 ASSERT(space->low() <= alloc_info->top
497 && alloc_info->top <= space->high() 497 && alloc_info->top <= space->high()
498 && alloc_info->limit == space->high()); 498 && alloc_info->limit == space->high());
499 #endif 499 #endif
500 return obj; 500 return obj;
501 } 501 }
502 502
503 503
504 template <typename StringType>
505 void NewSpace::ShrinkStringAtAllocationBoundary(String* string, int length) {
506 ASSERT(length <= string->length());
507 ASSERT(string->IsSeqString());
508 ASSERT(string->address() + StringType::SizeFor(string->length()) ==
509 allocation_info_.top);
510 allocation_info_.top =
511 string->address() + StringType::SizeFor(length);
512 string->set_length(length);
513 }
514
515
516 bool FreeListNode::IsFreeListNode(HeapObject* object) { 504 bool FreeListNode::IsFreeListNode(HeapObject* object) {
517 return object->map() == Heap::raw_unchecked_byte_array_map() 505 return object->map() == Heap::raw_unchecked_byte_array_map()
518 || object->map() == Heap::raw_unchecked_one_pointer_filler_map() 506 || object->map() == Heap::raw_unchecked_one_pointer_filler_map()
519 || object->map() == Heap::raw_unchecked_two_pointer_filler_map(); 507 || object->map() == Heap::raw_unchecked_two_pointer_filler_map();
520 } 508 }
521 509
522 } } // namespace v8::internal 510 } } // namespace v8::internal
523 511
524 #endif // V8_SPACES_INL_H_ 512 #endif // V8_SPACES_INL_H_
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