1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
// Copyright 2009-2010 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_PROFILER_HEAP_PROFILER_H_
#define V8_PROFILER_HEAP_PROFILER_H_
#include <memory>
#include <vector>
#include "include/v8-profiler.h"
#include "src/base/platform/mutex.h"
#include "src/common/globals.h"
#include "src/debug/debug-interface.h"
#include "src/heap/heap.h"
namespace v8 {
namespace internal {
// Forward declarations.
class AllocationTracker;
class HeapObjectsMap;
class HeapSnapshot;
class SamplingHeapProfiler;
class StringsStorage;
class HeapProfiler : public HeapObjectAllocationTracker {
public:
explicit HeapProfiler(Heap* heap);
~HeapProfiler() override;
HeapSnapshot* TakeSnapshot(v8::ActivityControl* control,
v8::HeapProfiler::ObjectNameResolver* resolver,
bool treat_global_objects_as_roots);
bool StartSamplingHeapProfiler(uint64_t sample_interval, int stack_depth,
v8::HeapProfiler::SamplingFlags);
void StopSamplingHeapProfiler();
bool is_sampling_allocations() { return !!sampling_heap_profiler_; }
AllocationProfile* GetAllocationProfile();
void StartHeapObjectsTracking(bool track_allocations);
void StopHeapObjectsTracking();
AllocationTracker* allocation_tracker() const {
return allocation_tracker_.get();
}
HeapObjectsMap* heap_object_map() const { return ids_.get(); }
StringsStorage* names() const { return names_.get(); }
SnapshotObjectId PushHeapObjectsStats(OutputStream* stream,
int64_t* timestamp_us);
int GetSnapshotsCount() const;
bool IsTakingSnapshot() const;
HeapSnapshot* GetSnapshot(int index);
SnapshotObjectId GetSnapshotObjectId(Handle<Object> obj);
SnapshotObjectId GetSnapshotObjectId(NativeObject obj);
void DeleteAllSnapshots();
void RemoveSnapshot(HeapSnapshot* snapshot);
void ObjectMoveEvent(Address from, Address to, int size);
void AllocationEvent(Address addr, int size) override;
void UpdateObjectSizeEvent(Address addr, int size) override;
void AddBuildEmbedderGraphCallback(
v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
void RemoveBuildEmbedderGraphCallback(
v8::HeapProfiler::BuildEmbedderGraphCallback callback, void* data);
void BuildEmbedderGraph(Isolate* isolate, v8::EmbedderGraph* graph);
bool HasBuildEmbedderGraphCallback() {
return !build_embedder_graph_callbacks_.empty();
}
void SetGetDetachednessCallback(
v8::HeapProfiler::GetDetachednessCallback callback, void* data);
bool HasGetDetachednessCallback() const {
return get_detachedness_callback_.first != nullptr;
}
v8::EmbedderGraph::Node::Detachedness GetDetachedness(
const v8::Local<v8::Value> v8_value, uint16_t class_id);
bool is_tracking_object_moves() const { return is_tracking_object_moves_; }
Handle<HeapObject> FindHeapObjectById(SnapshotObjectId id);
void ClearHeapObjectMap();
Isolate* isolate() const;
void QueryObjects(Handle<Context> context,
debug::QueryObjectPredicate* predicate,
v8::PersistentValueVector<v8::Object>* objects);
private:
void MaybeClearStringsStorage();
Heap* heap() const;
// Mapping from HeapObject addresses to objects' uids.
std::unique_ptr<HeapObjectsMap> ids_;
std::vector<std::unique_ptr<HeapSnapshot>> snapshots_;
std::unique_ptr<StringsStorage> names_;
std::unique_ptr<AllocationTracker> allocation_tracker_;
bool is_tracking_object_moves_;
bool is_taking_snapshot_;
base::Mutex profiler_mutex_;
std::unique_ptr<SamplingHeapProfiler> sampling_heap_profiler_;
std::vector<std::pair<v8::HeapProfiler::BuildEmbedderGraphCallback, void*>>
build_embedder_graph_callbacks_;
std::pair<v8::HeapProfiler::GetDetachednessCallback, void*>
get_detachedness_callback_;
DISALLOW_COPY_AND_ASSIGN(HeapProfiler);
};
} // namespace internal
} // namespace v8
#endif // V8_PROFILER_HEAP_PROFILER_H_
|
