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Side by Side Diff: runtime/vm/object_graph.h

Issue 2481873005: clang-format runtime/vm (Closed)
Patch Set: Merge Created 4 years, 1 month ago
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1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 #ifndef RUNTIME_VM_OBJECT_GRAPH_H_ 5 #ifndef RUNTIME_VM_OBJECT_GRAPH_H_
6 #define RUNTIME_VM_OBJECT_GRAPH_H_ 6 #define RUNTIME_VM_OBJECT_GRAPH_H_
7 7
8 #include "vm/allocation.h" 8 #include "vm/allocation.h"
9 #include "vm/object.h" 9 #include "vm/object.h"
10 10
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22 22
23 // Allows climbing the search tree all the way to the root. 23 // Allows climbing the search tree all the way to the root.
24 class StackIterator { 24 class StackIterator {
25 public: 25 public:
26 // The object this iterator currently points to. 26 // The object this iterator currently points to.
27 RawObject* Get() const; 27 RawObject* Get() const;
28 // Returns false if there is no parent. 28 // Returns false if there is no parent.
29 bool MoveToParent(); 29 bool MoveToParent();
30 // Offset into parent for the pointer to current object. -1 if no parent. 30 // Offset into parent for the pointer to current object. -1 if no parent.
31 intptr_t OffsetFromParentInWords() const; 31 intptr_t OffsetFromParentInWords() const;
32
32 private: 33 private:
33 StackIterator(const Stack* stack, intptr_t index) 34 StackIterator(const Stack* stack, intptr_t index)
34 : stack_(stack), index_(index) { } 35 : stack_(stack), index_(index) {}
35 const Stack* stack_; 36 const Stack* stack_;
36 intptr_t index_; 37 intptr_t index_;
37 friend class ObjectGraph::Stack; 38 friend class ObjectGraph::Stack;
38 DISALLOW_IMPLICIT_CONSTRUCTORS(StackIterator); 39 DISALLOW_IMPLICIT_CONSTRUCTORS(StackIterator);
39 }; 40 };
40 41
41 class Visitor { 42 class Visitor {
42 public: 43 public:
43 // Directs how the search should continue after visiting an object. 44 // Directs how the search should continue after visiting an object.
44 enum Direction { 45 enum Direction {
45 kProceed, // Recurse on this object's pointers. 46 kProceed, // Recurse on this object's pointers.
46 kBacktrack, // Ignore this object's pointers. 47 kBacktrack, // Ignore this object's pointers.
47 kAbort, // Terminate the entire search immediately. 48 kAbort, // Terminate the entire search immediately.
48 }; 49 };
49 virtual ~Visitor() { } 50 virtual ~Visitor() {}
50 // Visits the object pointed to by *it. The iterator is only valid 51 // Visits the object pointed to by *it. The iterator is only valid
51 // during this call. This method must not allocate from the heap or 52 // during this call. This method must not allocate from the heap or
52 // trigger GC in any way. 53 // trigger GC in any way.
53 virtual Direction VisitObject(StackIterator* it) = 0; 54 virtual Direction VisitObject(StackIterator* it) = 0;
54 }; 55 };
55 56
56 explicit ObjectGraph(Thread* thread); 57 explicit ObjectGraph(Thread* thread);
57 ~ObjectGraph(); 58 ~ObjectGraph();
58 59
59 // Visits all strongly reachable objects in the isolate's heap, in a 60 // Visits all strongly reachable objects in the isolate's heap, in a
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99 // TODO(koda): Document format; support streaming/chunking. 100 // TODO(koda): Document format; support streaming/chunking.
100 intptr_t Serialize(WriteStream* stream, bool collect_garbage); 101 intptr_t Serialize(WriteStream* stream, bool collect_garbage);
101 102
102 private: 103 private:
103 DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectGraph); 104 DISALLOW_IMPLICIT_CONSTRUCTORS(ObjectGraph);
104 }; 105 };
105 106
106 } // namespace dart 107 } // namespace dart
107 108
108 #endif // RUNTIME_VM_OBJECT_GRAPH_H_ 109 #endif // RUNTIME_VM_OBJECT_GRAPH_H_
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