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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/accessors.h" | 7 #include "src/accessors.h" |
8 #include "src/api.h" | 8 #include "src/api.h" |
9 #include "src/base/bits.h" | 9 #include "src/base/bits.h" |
10 #include "src/base/once.h" | 10 #include "src/base/once.h" |
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1508 return NULL; | 1508 return NULL; |
1509 } | 1509 } |
1510 | 1510 |
1511 private: | 1511 private: |
1512 Heap* heap_; | 1512 Heap* heap_; |
1513 }; | 1513 }; |
1514 | 1514 |
1515 | 1515 |
1516 void Heap::Scavenge() { | 1516 void Heap::Scavenge() { |
1517 RelocationLock relocation_lock(this); | 1517 RelocationLock relocation_lock(this); |
| 1518 // There are soft limits in the allocation code, designed to trigger a mark |
| 1519 // sweep collection by failing allocations. There is no sense in trying to |
| 1520 // trigger one during scavenge: scavenges allocation should always succeed. |
| 1521 AlwaysAllocateScope scope(isolate()); |
1518 | 1522 |
1519 #ifdef VERIFY_HEAP | 1523 #ifdef VERIFY_HEAP |
1520 if (FLAG_verify_heap) VerifyNonPointerSpacePointers(this); | 1524 if (FLAG_verify_heap) VerifyNonPointerSpacePointers(this); |
1521 #endif | 1525 #endif |
1522 | 1526 |
1523 gc_state_ = SCAVENGE; | 1527 gc_state_ = SCAVENGE; |
1524 | 1528 |
1525 // Implements Cheney's copying algorithm | 1529 // Implements Cheney's copying algorithm |
1526 LOG(isolate_, ResourceEvent("scavenge", "begin")); | 1530 LOG(isolate_, ResourceEvent("scavenge", "begin")); |
1527 | 1531 |
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6384 static_cast<int>(object_sizes_last_time_[index])); | 6388 static_cast<int>(object_sizes_last_time_[index])); |
6385 CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT) | 6389 CODE_AGE_LIST_COMPLETE(ADJUST_LAST_TIME_OBJECT_COUNT) |
6386 #undef ADJUST_LAST_TIME_OBJECT_COUNT | 6390 #undef ADJUST_LAST_TIME_OBJECT_COUNT |
6387 | 6391 |
6388 MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_)); | 6392 MemCopy(object_counts_last_time_, object_counts_, sizeof(object_counts_)); |
6389 MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_)); | 6393 MemCopy(object_sizes_last_time_, object_sizes_, sizeof(object_sizes_)); |
6390 ClearObjectStats(); | 6394 ClearObjectStats(); |
6391 } | 6395 } |
6392 } | 6396 } |
6393 } // namespace v8::internal | 6397 } // namespace v8::internal |
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