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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/snapshot/serialize.h" | 5 #include "src/snapshot/serialize.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/platform/platform.h" | 9 #include "src/base/platform/platform.h" |
| 10 #include "src/bootstrapper.h" | 10 #include "src/bootstrapper.h" |
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| 626 deserializing_user_code_ = true; | 626 deserializing_user_code_ = true; |
| 627 HandleScope scope(isolate); | 627 HandleScope scope(isolate); |
| 628 Handle<SharedFunctionInfo> result; | 628 Handle<SharedFunctionInfo> result; |
| 629 { | 629 { |
| 630 DisallowHeapAllocation no_gc; | 630 DisallowHeapAllocation no_gc; |
| 631 Object* root; | 631 Object* root; |
| 632 VisitPointer(&root); | 632 VisitPointer(&root); |
| 633 DeserializeDeferredObjects(); | 633 DeserializeDeferredObjects(); |
| 634 result = Handle<SharedFunctionInfo>(SharedFunctionInfo::cast(root)); | 634 result = Handle<SharedFunctionInfo>(SharedFunctionInfo::cast(root)); |
| 635 } | 635 } |
| 636 CommitNewInternalizedStrings(isolate); | 636 CommitPostProcessedObjects(isolate); |
| 637 return scope.CloseAndEscape(result); | 637 return scope.CloseAndEscape(result); |
| 638 } | 638 } |
| 639 } | 639 } |
| 640 | 640 |
| 641 | 641 |
| 642 Deserializer::~Deserializer() { | 642 Deserializer::~Deserializer() { |
| 643 // TODO(svenpanne) Re-enable this assertion when v8 initialization is fixed. | 643 // TODO(svenpanne) Re-enable this assertion when v8 initialization is fixed. |
| 644 // DCHECK(source_.AtEOF()); | 644 // DCHECK(source_.AtEOF()); |
| 645 attached_objects_.Dispose(); | 645 attached_objects_.Dispose(); |
| 646 } | 646 } |
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| 719 String* canonical = StringTable::LookupKeyIfExists(isolate_, &key); | 719 String* canonical = StringTable::LookupKeyIfExists(isolate_, &key); |
| 720 if (canonical == NULL) { | 720 if (canonical == NULL) { |
| 721 new_internalized_strings_.Add(handle(string)); | 721 new_internalized_strings_.Add(handle(string)); |
| 722 return string; | 722 return string; |
| 723 } else { | 723 } else { |
| 724 string->SetForwardedInternalizedString(canonical); | 724 string->SetForwardedInternalizedString(canonical); |
| 725 return canonical; | 725 return canonical; |
| 726 } | 726 } |
| 727 } | 727 } |
| 728 } else if (obj->IsScript()) { | 728 } else if (obj->IsScript()) { |
| 729 // Assign a new script id to avoid collision. | 729 new_scripts_.Add(handle(Script::cast(obj))); |
| 730 Script::cast(obj)->set_id(isolate_->heap()->NextScriptId()); | |
| 731 } else { | 730 } else { |
| 732 DCHECK(CanBeDeferred(obj)); | 731 DCHECK(CanBeDeferred(obj)); |
| 733 } | 732 } |
| 734 } | 733 } |
| 735 if (obj->IsAllocationSite()) { | 734 if (obj->IsAllocationSite()) { |
| 736 DCHECK(obj->IsAllocationSite()); | 735 DCHECK(obj->IsAllocationSite()); |
| 737 // Allocation sites are present in the snapshot, and must be linked into | 736 // Allocation sites are present in the snapshot, and must be linked into |
| 738 // a list at deserialization time. | 737 // a list at deserialization time. |
| 739 AllocationSite* site = AllocationSite::cast(obj); | 738 AllocationSite* site = AllocationSite::cast(obj); |
| 740 // TODO(mvstanton): consider treating the heap()->allocation_sites_list() | 739 // TODO(mvstanton): consider treating the heap()->allocation_sites_list() |
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| 753 if (deserializing_user_code() || space == LO_SPACE) { | 752 if (deserializing_user_code() || space == LO_SPACE) { |
| 754 new_code_objects_.Add(Code::cast(obj)); | 753 new_code_objects_.Add(Code::cast(obj)); |
| 755 } | 754 } |
| 756 } | 755 } |
| 757 // Check alignment. | 756 // Check alignment. |
| 758 DCHECK_EQ(0, Heap::GetFillToAlign(obj->address(), obj->RequiredAlignment())); | 757 DCHECK_EQ(0, Heap::GetFillToAlign(obj->address(), obj->RequiredAlignment())); |
| 759 return obj; | 758 return obj; |
| 760 } | 759 } |
| 761 | 760 |
| 762 | 761 |
| 763 void Deserializer::CommitNewInternalizedStrings(Isolate* isolate) { | 762 void Deserializer::CommitPostProcessedObjects(Isolate* isolate) { |
| 764 StringTable::EnsureCapacityForDeserialization( | 763 StringTable::EnsureCapacityForDeserialization( |
| 765 isolate, new_internalized_strings_.length()); | 764 isolate, new_internalized_strings_.length()); |
| 766 for (Handle<String> string : new_internalized_strings_) { | 765 for (Handle<String> string : new_internalized_strings_) { |
| 767 StringTableInsertionKey key(*string); | 766 StringTableInsertionKey key(*string); |
| 768 DCHECK_NULL(StringTable::LookupKeyIfExists(isolate, &key)); | 767 DCHECK_NULL(StringTable::LookupKeyIfExists(isolate, &key)); |
| 769 StringTable::LookupKey(isolate, &key); | 768 StringTable::LookupKey(isolate, &key); |
| 770 } | 769 } |
| 770 |
| 771 Heap* heap = isolate->heap(); |
| 772 Factory* factory = isolate->factory(); |
| 773 for (Handle<Script> script : new_scripts_) { |
| 774 // Assign a new script id to avoid collision. |
| 775 script->set_id(isolate_->heap()->NextScriptId()); |
| 776 // Add script to list. |
| 777 heap->set_script_list(*WeakFixedArray::Add(factory->script_list(), script)); |
| 778 } |
| 771 } | 779 } |
| 772 | 780 |
| 773 | 781 |
| 774 HeapObject* Deserializer::GetBackReferencedObject(int space) { | 782 HeapObject* Deserializer::GetBackReferencedObject(int space) { |
| 775 HeapObject* obj; | 783 HeapObject* obj; |
| 776 BackReference back_reference(source_.GetInt()); | 784 BackReference back_reference(source_.GetInt()); |
| 777 if (space == LO_SPACE) { | 785 if (space == LO_SPACE) { |
| 778 CHECK(back_reference.chunk_index() == 0); | 786 CHECK(back_reference.chunk_index() == 0); |
| 779 uint32_t index = back_reference.large_object_index(); | 787 uint32_t index = back_reference.large_object_index(); |
| 780 obj = deserialized_large_objects_[index]; | 788 obj = deserialized_large_objects_[index]; |
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| 2773 SerializedCodeData* scd = new SerializedCodeData(cached_data); | 2781 SerializedCodeData* scd = new SerializedCodeData(cached_data); |
| 2774 SanityCheckResult r = scd->SanityCheck(isolate, source); | 2782 SanityCheckResult r = scd->SanityCheck(isolate, source); |
| 2775 if (r == CHECK_SUCCESS) return scd; | 2783 if (r == CHECK_SUCCESS) return scd; |
| 2776 cached_data->Reject(); | 2784 cached_data->Reject(); |
| 2777 source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r); | 2785 source->GetIsolate()->counters()->code_cache_reject_reason()->AddSample(r); |
| 2778 delete scd; | 2786 delete scd; |
| 2779 return NULL; | 2787 return NULL; |
| 2780 } | 2788 } |
| 2781 } // namespace internal | 2789 } // namespace internal |
| 2782 } // namespace v8 | 2790 } // namespace v8 |
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