1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_HEAP_SNAPSHOT_GENERATOR_INL_H_ 6 #define V8_HEAP_SNAPSHOT_GENERATOR_INL_H_ 7 8 #include "src/heap-snapshot-generator.h" 9 10 namespace v8 { 11 namespace internal { 12 13 14 HeapEntry* HeapGraphEdge::from() const { 15 return &snapshot()->entries()[from_index_]; 16 } 17 18 19 HeapSnapshot* HeapGraphEdge::snapshot() const { 20 return to_entry_->snapshot(); 21 } 22 23 24 int HeapEntry::index() const { 25 return static_cast<int>(this - &snapshot_->entries().first()); 26 } 27 28 29 int HeapEntry::set_children_index(int index) { 30 children_index_ = index; 31 int next_index = index + children_count_; 32 children_count_ = 0; 33 return next_index; 34 } 35 36 37 HeapGraphEdge** HeapEntry::children_arr() { 38 ASSERT(children_index_ >= 0); 39 SLOW_ASSERT(children_index_ < snapshot_->children().length() || 40 (children_index_ == snapshot_->children().length() && 41 children_count_ == 0)); 42 return &snapshot_->children().first() + children_index_; 43 } 44 45 46 SnapshotObjectId HeapObjectsMap::GetNthGcSubrootId(int delta) { 47 return kGcRootsFirstSubrootId + delta * kObjectIdStep; 48 } 49 50 51 HeapObject* V8HeapExplorer::GetNthGcSubrootObject(int delta) { 52 return reinterpret_cast<HeapObject*>( 53 reinterpret_cast<char*>(kFirstGcSubrootObject) + 54 delta * HeapObjectsMap::kObjectIdStep); 55 } 56 57 58 int V8HeapExplorer::GetGcSubrootOrder(HeapObject* subroot) { 59 return static_cast<int>( 60 (reinterpret_cast<char*>(subroot) - 61 reinterpret_cast<char*>(kFirstGcSubrootObject)) / 62 HeapObjectsMap::kObjectIdStep); 63 } 64 65 } } // namespace v8::internal 66 67 #endif // V8_HEAP_SNAPSHOT_GENERATOR_INL_H_ 68
