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// Copyright 2013 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_HEAP_SNAPSHOT_GENERATOR_INL_H_
#define V8_HEAP_SNAPSHOT_GENERATOR_INL_H_
#include "heap-snapshot-generator.h"
namespace v8 {
namespace internal {
HeapEntry* HeapGraphEdge::from() const {
return &snapshot()->entries()[from_index_];
}
HeapSnapshot* HeapGraphEdge::snapshot() const {
return to_entry_->snapshot();
}
int HeapEntry::index() const {
return static_cast<int>(this - &snapshot_->entries().first());
}
int HeapEntry::set_children_index(int index) {
children_index_ = index;
int next_index = index + children_count_;
children_count_ = 0;
return next_index;
}
HeapGraphEdge** HeapEntry::children_arr() {
ASSERT(children_index_ >= 0);
SLOW_ASSERT(children_index_ < snapshot_->children().length() ||
(children_index_ == snapshot_->children().length() &&
children_count_ == 0));
return &snapshot_->children().first() + children_index_;
}
SnapshotObjectId HeapObjectsMap::GetNthGcSubrootId(int delta) {
return kGcRootsFirstSubrootId + delta * kObjectIdStep;
}
HeapObject* V8HeapExplorer::GetNthGcSubrootObject(int delta) {
return reinterpret_cast<HeapObject*>(
reinterpret_cast<char*>(kFirstGcSubrootObject) +
delta * HeapObjectsMap::kObjectIdStep);
}
int V8HeapExplorer::GetGcSubrootOrder(HeapObject* subroot) {
return static_cast<int>(
(reinterpret_cast<char*>(subroot) -
reinterpret_cast<char*>(kFirstGcSubrootObject)) /
HeapObjectsMap::kObjectIdStep);
}
} } // namespace v8::internal
#endif // V8_HEAP_SNAPSHOT_GENERATOR_INL_H_
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