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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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365 } | 365 } |
366 } | 366 } |
367 | 367 |
368 | 368 |
369 void StoreBuffer::GCPrologue() { | 369 void StoreBuffer::GCPrologue() { |
370 ClearFilteringHashSets(); | 370 ClearFilteringHashSets(); |
371 during_gc_ = true; | 371 during_gc_ = true; |
372 } | 372 } |
373 | 373 |
374 | 374 |
375 #ifdef DEBUG | 375 #ifdef VERIFY_HEAP |
376 static void DummyScavengePointer(HeapObject** p, HeapObject* o) { | 376 static void DummyScavengePointer(HeapObject** p, HeapObject* o) { |
377 // Do nothing. | 377 // Do nothing. |
378 } | 378 } |
379 | 379 |
380 | 380 |
381 void StoreBuffer::VerifyPointers(PagedSpace* space, | 381 void StoreBuffer::VerifyPointers(PagedSpace* space, |
382 RegionCallback region_callback) { | 382 RegionCallback region_callback) { |
383 PageIterator it(space); | 383 PageIterator it(space); |
384 | 384 |
385 while (it.has_next()) { | 385 while (it.has_next()) { |
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408 heap_->InNewSpace(*slot); | 408 heap_->InNewSpace(*slot); |
409 slot_address += kPointerSize; | 409 slot_address += kPointerSize; |
410 } | 410 } |
411 } | 411 } |
412 } | 412 } |
413 } | 413 } |
414 #endif | 414 #endif |
415 | 415 |
416 | 416 |
417 void StoreBuffer::Verify() { | 417 void StoreBuffer::Verify() { |
418 #ifdef DEBUG | 418 #ifdef VERIFY_HEAP |
419 VerifyPointers(heap_->old_pointer_space(), | 419 VerifyPointers(heap_->old_pointer_space(), |
420 &StoreBuffer::FindPointersToNewSpaceInRegion); | 420 &StoreBuffer::FindPointersToNewSpaceInRegion); |
421 VerifyPointers(heap_->map_space(), | 421 VerifyPointers(heap_->map_space(), |
422 &StoreBuffer::FindPointersToNewSpaceInMapsRegion); | 422 &StoreBuffer::FindPointersToNewSpaceInMapsRegion); |
423 VerifyPointers(heap_->lo_space()); | 423 VerifyPointers(heap_->lo_space()); |
424 #endif | 424 #endif |
425 } | 425 } |
426 | 426 |
427 | 427 |
428 void StoreBuffer::GCEpilogue() { | 428 void StoreBuffer::GCEpilogue() { |
429 during_gc_ = false; | 429 during_gc_ = false; |
| 430 #ifdef VERIFY_HEAP |
430 if (FLAG_verify_heap) { | 431 if (FLAG_verify_heap) { |
431 Verify(); | 432 Verify(); |
432 } | 433 } |
| 434 #endif |
433 } | 435 } |
434 | 436 |
435 | 437 |
436 void StoreBuffer::FindPointersToNewSpaceInRegion( | 438 void StoreBuffer::FindPointersToNewSpaceInRegion( |
437 Address start, Address end, ObjectSlotCallback slot_callback) { | 439 Address start, Address end, ObjectSlotCallback slot_callback) { |
438 for (Address slot_address = start; | 440 for (Address slot_address = start; |
439 slot_address < end; | 441 slot_address < end; |
440 slot_address += kPointerSize) { | 442 slot_address += kPointerSize) { |
441 Object** slot = reinterpret_cast<Object**>(slot_address); | 443 Object** slot = reinterpret_cast<Object**>(slot_address); |
442 if (heap_->InNewSpace(*slot)) { | 444 if (heap_->InNewSpace(*slot)) { |
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710 heap_->isolate()->counters()->store_buffer_compactions()->Increment(); | 712 heap_->isolate()->counters()->store_buffer_compactions()->Increment(); |
711 CheckForFullBuffer(); | 713 CheckForFullBuffer(); |
712 } | 714 } |
713 | 715 |
714 | 716 |
715 void StoreBuffer::CheckForFullBuffer() { | 717 void StoreBuffer::CheckForFullBuffer() { |
716 EnsureSpace(kStoreBufferSize * 2); | 718 EnsureSpace(kStoreBufferSize * 2); |
717 } | 719 } |
718 | 720 |
719 } } // namespace v8::internal | 721 } } // namespace v8::internal |
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