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_PROFILER_HEAP_SNAPSHOT_GENERATOR_INL_H_ |
6 | #define V8_PROFILER_HEAP_SNAPSHOT_GENERATOR_INL_H_ |
7 | |
8 | #include "src/profiler/heap-snapshot-generator.h" |
9 | |
10 | #include "src/profiler/heap-profiler.h" |
11 | #include "src/string-hasher-inl.h" |
12 | |
13 | namespace v8 { |
14 | namespace internal { |
15 | |
16 | HeapEntry* HeapGraphEdge::from() const { |
17 | return &snapshot()->entries()[from_index()]; |
18 | } |
19 | |
20 | Isolate* HeapGraphEdge::isolate() const { return to_entry_->isolate(); } |
21 | |
22 | HeapSnapshot* HeapGraphEdge::snapshot() const { |
23 | return to_entry_->snapshot(); |
24 | } |
25 | |
26 | int HeapEntry::set_children_index(int index) { |
27 | // Note: children_count_ and children_end_index_ are parts of a union. |
28 | int next_index = index + children_count_; |
29 | children_end_index_ = index; |
30 | return next_index; |
31 | } |
32 | |
33 | void HeapEntry::add_child(HeapGraphEdge* edge) { |
34 | snapshot_->children()[children_end_index_++] = edge; |
35 | } |
36 | |
37 | HeapGraphEdge* HeapEntry::child(int i) { return children_begin()[i]; } |
38 | |
39 | std::vector<HeapGraphEdge*>::iterator HeapEntry::children_begin() const { |
40 | return index_ == 0 ? snapshot_->children().begin() |
41 | : snapshot_->entries()[index_ - 1].children_end(); |
42 | } |
43 | |
44 | std::vector<HeapGraphEdge*>::iterator HeapEntry::children_end() const { |
45 | DCHECK_GE(children_end_index_, 0); |
46 | return snapshot_->children().begin() + children_end_index_; |
47 | } |
48 | |
49 | int HeapEntry::children_count() const { |
50 | return static_cast<int>(children_end() - children_begin()); |
51 | } |
52 | |
53 | Isolate* HeapEntry::isolate() const { return snapshot_->profiler()->isolate(); } |
54 | |
55 | uint32_t HeapSnapshotJSONSerializer::StringHash(const void* string) { |
56 | const char* s = reinterpret_cast<const char*>(string); |
57 | int len = static_cast<int>(strlen(s)); |
58 | return StringHasher::HashSequentialString(s, len, |
59 | v8::internal::kZeroHashSeed); |
60 | } |
61 | |
62 | int HeapSnapshotJSONSerializer::to_node_index(const HeapEntry* e) { |
63 | return to_node_index(e->index()); |
64 | } |
65 | |
66 | int HeapSnapshotJSONSerializer::to_node_index(int entry_index) { |
67 | return entry_index * kNodeFieldsCount; |
68 | } |
69 | |
70 | } // namespace internal |
71 | } // namespace v8 |
72 | |
73 | #endif // V8_PROFILER_HEAP_SNAPSHOT_GENERATOR_INL_H_ |
74 |