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Issue 155287: Fix free list construction for global property cells on x64. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: Created 11 years, 5 months 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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1258 ASSERT(size_in_bytes > 0); 1258 ASSERT(size_in_bytes > 0);
1259 ASSERT(IsAligned(size_in_bytes, kPointerSize)); 1259 ASSERT(IsAligned(size_in_bytes, kPointerSize));
1260 1260
1261 // We write a map and possibly size information to the block. If the block 1261 // We write a map and possibly size information to the block. If the block
1262 // is big enough to be a ByteArray with at least one extra word (the next 1262 // is big enough to be a ByteArray with at least one extra word (the next
1263 // pointer), we set its map to be the byte array map and its size to an 1263 // pointer), we set its map to be the byte array map and its size to an
1264 // appropriate array length for the desired size from HeapObject::Size(). 1264 // appropriate array length for the desired size from HeapObject::Size().
1265 // If the block is too small (eg, one or two words), to hold both a size 1265 // If the block is too small (eg, one or two words), to hold both a size
1266 // field and a next pointer, we give it a filler map that gives it the 1266 // field and a next pointer, we give it a filler map that gives it the
1267 // correct size. 1267 // correct size.
1268 if (size_in_bytes > ByteArray::kHeaderSize) { 1268 if (size_in_bytes > ByteArray::kAlignedSize) {
1269 set_map(Heap::raw_unchecked_byte_array_map()); 1269 set_map(Heap::raw_unchecked_byte_array_map());
1270 ByteArray::cast(this)->set_length(ByteArray::LengthFor(size_in_bytes)); 1270 ByteArray::cast(this)->set_length(ByteArray::LengthFor(size_in_bytes));
1271 } else if (size_in_bytes == kPointerSize) { 1271 } else if (size_in_bytes == kPointerSize) {
1272 set_map(Heap::raw_unchecked_one_pointer_filler_map()); 1272 set_map(Heap::raw_unchecked_one_pointer_filler_map());
1273 } else if (size_in_bytes == 2 * kPointerSize) { 1273 } else if (size_in_bytes == 2 * kPointerSize) {
1274 set_map(Heap::raw_unchecked_two_pointer_filler_map()); 1274 set_map(Heap::raw_unchecked_two_pointer_filler_map());
1275 } else { 1275 } else {
1276 UNREACHABLE(); 1276 UNREACHABLE();
1277 } 1277 }
1278 ASSERT(Size() == size_in_bytes); 1278 ASSERT(Size() == size_in_bytes);
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2653 reinterpret_cast<Object**>(object->address() 2653 reinterpret_cast<Object**>(object->address()
2654 + Page::kObjectAreaSize), 2654 + Page::kObjectAreaSize),
2655 allocation_top); 2655 allocation_top);
2656 PrintF("\n"); 2656 PrintF("\n");
2657 } 2657 }
2658 } 2658 }
2659 } 2659 }
2660 #endif // DEBUG 2660 #endif // DEBUG
2661 2661
2662 } } // namespace v8::internal 2662 } } // namespace v8::internal
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