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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 #ifndef V8_HEAP_INL_H_ | 5 #ifndef V8_HEAP_INL_H_ |
| 6 #define V8_HEAP_INL_H_ | 6 #define V8_HEAP_INL_H_ |
| 7 | 7 |
| 8 #include <cmath> | 8 #include <cmath> |
| 9 | 9 |
| 10 #include "src/heap.h" | 10 #include "src/heap.h" |
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| 520 | 520 |
| 521 bool Heap::CollectGarbage(AllocationSpace space, | 521 bool Heap::CollectGarbage(AllocationSpace space, |
| 522 const char* gc_reason, | 522 const char* gc_reason, |
| 523 const v8::GCCallbackFlags callbackFlags) { | 523 const v8::GCCallbackFlags callbackFlags) { |
| 524 const char* collector_reason = NULL; | 524 const char* collector_reason = NULL; |
| 525 GarbageCollector collector = SelectGarbageCollector(space, &collector_reason); | 525 GarbageCollector collector = SelectGarbageCollector(space, &collector_reason); |
| 526 return CollectGarbage(collector, gc_reason, collector_reason, callbackFlags); | 526 return CollectGarbage(collector, gc_reason, collector_reason, callbackFlags); |
| 527 } | 527 } |
| 528 | 528 |
| 529 | 529 |
| 530 int64_t Heap::AdjustAmountOfExternalAllocatedMemory( | |
| 531 int64_t change_in_bytes) { | |
| 532 ASSERT(HasBeenSetUp()); | |
| 533 int64_t amount = amount_of_external_allocated_memory_ + change_in_bytes; | |
| 534 if (change_in_bytes > 0) { | |
| 535 // Avoid overflow. | |
| 536 if (amount > amount_of_external_allocated_memory_) { | |
| 537 amount_of_external_allocated_memory_ = amount; | |
| 538 } else { | |
| 539 // Give up and reset the counters in case of an overflow. | |
| 540 amount_of_external_allocated_memory_ = 0; | |
| 541 amount_of_external_allocated_memory_at_last_global_gc_ = 0; | |
| 542 } | |
| 543 int64_t amount_since_last_global_gc = PromotedExternalMemorySize(); | |
| 544 if (amount_since_last_global_gc > external_allocation_limit_) { | |
| 545 CollectAllGarbage(kNoGCFlags, "external memory allocation limit reached"); | |
| 546 } | |
| 547 } else { | |
| 548 // Avoid underflow. | |
| 549 if (amount >= 0) { | |
| 550 amount_of_external_allocated_memory_ = amount; | |
| 551 } else { | |
| 552 // Give up and reset the counters in case of an underflow. | |
| 553 amount_of_external_allocated_memory_ = 0; | |
| 554 amount_of_external_allocated_memory_at_last_global_gc_ = 0; | |
| 555 } | |
| 556 } | |
| 557 if (FLAG_trace_external_memory) { | |
| 558 PrintPID("%8.0f ms: ", isolate()->time_millis_since_init()); | |
| 559 PrintF("Adjust amount of external memory: delta=%6" V8_PTR_PREFIX "d KB, " | |
| 560 "amount=%6" V8_PTR_PREFIX "d KB, since_gc=%6" V8_PTR_PREFIX "d KB, " | |
| 561 "isolate=0x%08" V8PRIxPTR ".\n", | |
| 562 static_cast<intptr_t>(change_in_bytes / KB), | |
| 563 static_cast<intptr_t>(amount_of_external_allocated_memory_ / KB), | |
| 564 static_cast<intptr_t>(PromotedExternalMemorySize() / KB), | |
| 565 reinterpret_cast<intptr_t>(isolate())); | |
| 566 } | |
| 567 ASSERT(amount_of_external_allocated_memory_ >= 0); | |
| 568 return amount_of_external_allocated_memory_; | |
| 569 } | |
| 570 | |
| 571 | |
| 572 Isolate* Heap::isolate() { | 530 Isolate* Heap::isolate() { |
| 573 return reinterpret_cast<Isolate*>(reinterpret_cast<intptr_t>(this) - | 531 return reinterpret_cast<Isolate*>(reinterpret_cast<intptr_t>(this) - |
| 574 reinterpret_cast<size_t>(reinterpret_cast<Isolate*>(4)->heap()) + 4); | 532 reinterpret_cast<size_t>(reinterpret_cast<Isolate*>(4)->heap()) + 4); |
| 575 } | 533 } |
| 576 | 534 |
| 577 | 535 |
| 578 // Calls the FUNCTION_CALL function and retries it up to three times | 536 // Calls the FUNCTION_CALL function and retries it up to three times |
| 579 // to guarantee that any allocations performed during the call will | 537 // to guarantee that any allocations performed during the call will |
| 580 // succeed if there's enough memory. | 538 // succeed if there's enough memory. |
| 581 | 539 |
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| 767 | 725 |
| 768 | 726 |
| 769 double GCTracer::SizeOfHeapObjects() { | 727 double GCTracer::SizeOfHeapObjects() { |
| 770 return (static_cast<double>(heap_->SizeOfObjects())) / MB; | 728 return (static_cast<double>(heap_->SizeOfObjects())) / MB; |
| 771 } | 729 } |
| 772 | 730 |
| 773 | 731 |
| 774 } } // namespace v8::internal | 732 } } // namespace v8::internal |
| 775 | 733 |
| 776 #endif // V8_HEAP_INL_H_ | 734 #endif // V8_HEAP_INL_H_ |
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