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1 // Copyright 2013 the V8 project authors. All rights reserved. | |
2 // Redistribution and use in source and binary forms, with or without | |
3 // modification, are permitted provided that the following conditions are | |
4 // met: | |
5 // | |
6 // * Redistributions of source code must retain the above copyright | |
7 // notice, this list of conditions and the following disclaimer. | |
8 // * Redistributions in binary form must reproduce the above | |
9 // copyright notice, this list of conditions and the following | |
10 // disclaimer in the documentation and/or other materials provided | |
11 // with the distribution. | |
12 // * Neither the name of Google Inc. nor the names of its | |
13 // contributors may be used to endorse or promote products derived | |
14 // from this software without specific prior written permission. | |
15 // | |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 #ifndef V8_ALLOCATION_TRACKER_H_ | |
29 #define V8_ALLOCATION_TRACKER_H_ | |
30 | |
31 namespace v8 { | |
32 namespace internal { | |
33 | |
34 class HeapObjectsMap; | |
35 class HeapObjectsMap; | |
loislo
2013/10/16 15:14:08
duplicate
yurys
2013/10/17 15:27:35
Done.
| |
36 | |
37 class AllocationTraceTree; | |
38 | |
39 class AllocationTraceNode { | |
40 public: | |
41 AllocationTraceNode(AllocationTraceTree* tree, | |
42 SnapshotObjectId shared_function_info_id); | |
43 ~AllocationTraceNode(); | |
44 AllocationTraceNode* FindChild(SnapshotObjectId shared_function_info_id); | |
45 AllocationTraceNode* FindOrAddChild(SnapshotObjectId shared_function_info_id); | |
46 void AddAllocation(unsigned size); | |
47 | |
48 SnapshotObjectId function_id() const { return function_id_; } | |
49 unsigned allocation_size() const { return total_size_; } | |
50 unsigned allocation_count() const { return allocation_count_; } | |
51 unsigned id() const { return id_; } | |
52 Vector<AllocationTraceNode*> children() const { return children_.ToVector(); } | |
53 | |
54 void Print(int indent); | |
55 | |
56 private: | |
57 AllocationTraceTree* tree_; | |
58 SnapshotObjectId function_id_; | |
59 unsigned total_size_; | |
60 unsigned allocation_count_; | |
61 unsigned id_; | |
62 List<AllocationTraceNode*> children_; | |
63 | |
64 DISALLOW_COPY_AND_ASSIGN(AllocationTraceNode); | |
65 }; | |
66 | |
67 | |
68 class AllocationTraceTree { | |
69 public: | |
70 AllocationTraceTree(); | |
71 ~AllocationTraceTree(); | |
72 AllocationTraceNode* AddPathFromEnd(const Vector<SnapshotObjectId>& path); | |
73 AllocationTraceNode* root() { return &root_; } | |
74 unsigned next_node_id() { return next_node_id_++; } | |
75 void Print(); | |
76 | |
77 private: | |
78 unsigned next_node_id_; | |
79 AllocationTraceNode root_; | |
80 | |
81 DISALLOW_COPY_AND_ASSIGN(AllocationTraceTree); | |
82 }; | |
83 | |
84 | |
85 class AllocationTracker { | |
86 public: | |
87 struct FunctionInfo { | |
88 FunctionInfo() | |
89 : name(NULL), | |
90 script_name(NULL), | |
91 script_id(0), | |
92 line(-1), | |
93 column(-1) {} | |
94 const char* name; | |
95 const char* script_name; | |
96 int script_id; | |
97 int line; | |
98 int column; | |
99 }; | |
100 | |
101 AllocationTracker(HeapObjectsMap* ids, StringsStorage* names); | |
102 ~AllocationTracker(); | |
103 | |
104 void PrepareForSerialization(); | |
105 void NewObjectEvent(Address addr, int size); | |
106 | |
107 AllocationTraceTree* allocation_traces() { return &allocation_traces_; } | |
108 HashMap* id_to_function_info() { return &id_to_function_info_; } | |
109 | |
110 private: | |
111 void AddFunctionInfo(SharedFunctionInfo* info, SnapshotObjectId id); | |
112 | |
113 class UnresolvedLocation { | |
114 public: | |
115 UnresolvedLocation(Script* script, int start, FunctionInfo* info); | |
116 ~UnresolvedLocation(); | |
117 void Resolve(); | |
118 | |
119 private: | |
120 static void HandleWeakScript(v8::Isolate* isolate, | |
121 v8::Persistent<v8::Value>* obj, | |
122 void* data); | |
123 Handle<Script> script_; | |
124 int start_position_; | |
125 FunctionInfo* info_; | |
126 }; | |
127 static void DeleteUnresolvedLocation(UnresolvedLocation** location); | |
128 | |
129 HeapObjectsMap* ids_; | |
130 StringsStorage* names_; | |
131 AllocationTraceTree allocation_traces_; | |
132 static const int kMaxAllocationTraceLength = 64; | |
133 SnapshotObjectId allocation_trace_buffer_[kMaxAllocationTraceLength]; | |
134 HashMap id_to_function_info_; | |
135 List<UnresolvedLocation*> unresolved_locations_; | |
136 | |
137 DISALLOW_COPY_AND_ASSIGN(AllocationTracker); | |
138 }; | |
139 | |
140 } } // namespace v8::internal | |
141 | |
142 #endif // V8_ALLOCATION_TRACKER_H_ | |
143 | |
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