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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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440 | 440 |
441 #ifdef DEBUG | 441 #ifdef DEBUG |
442 // Reports statistic info of the space. | 442 // Reports statistic info of the space. |
443 static void ReportStatistics(); | 443 static void ReportStatistics(); |
444 #endif | 444 #endif |
445 | 445 |
446 // Due to encoding limitation, we can only have 8K chunks. | 446 // Due to encoding limitation, we can only have 8K chunks. |
447 static const int kMaxNofChunks = 1 << Page::kPageSizeBits; | 447 static const int kMaxNofChunks = 1 << Page::kPageSizeBits; |
448 // If a chunk has at least 16 pages, the maximum heap size is about | 448 // If a chunk has at least 16 pages, the maximum heap size is about |
449 // 8K * 8K * 16 = 1G bytes. | 449 // 8K * 8K * 16 = 1G bytes. |
| 450 #ifdef V8_TARGET_ARCH_X64 |
| 451 static const int kPagesPerChunk = 32; |
| 452 #else |
450 static const int kPagesPerChunk = 16; | 453 static const int kPagesPerChunk = 16; |
| 454 #endif |
451 static const int kChunkSize = kPagesPerChunk * Page::kPageSize; | 455 static const int kChunkSize = kPagesPerChunk * Page::kPageSize; |
452 | 456 |
453 private: | 457 private: |
454 // Maximum space size in bytes. | 458 // Maximum space size in bytes. |
455 static int capacity_; | 459 static int capacity_; |
456 | 460 |
457 // Allocated space size in bytes. | 461 // Allocated space size in bytes. |
458 static int size_; | 462 static int size_; |
459 | 463 |
460 // The initial chunk of virtual memory. | 464 // The initial chunk of virtual memory. |
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1859 | 1863 |
1860 private: | 1864 private: |
1861 LargeObjectChunk* current_; | 1865 LargeObjectChunk* current_; |
1862 HeapObjectCallback size_func_; | 1866 HeapObjectCallback size_func_; |
1863 }; | 1867 }; |
1864 | 1868 |
1865 | 1869 |
1866 } } // namespace v8::internal | 1870 } } // namespace v8::internal |
1867 | 1871 |
1868 #endif // V8_SPACES_H_ | 1872 #endif // V8_SPACES_H_ |
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