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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ | 5 #ifndef BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ |
6 #define BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ | 6 #define BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 | 9 |
10 #include "base/atomicops.h" | 10 #include "base/atomicops.h" |
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46 // Returns the thread-local instance, creating one if necessary. Returns | 46 // Returns the thread-local instance, creating one if necessary. Returns |
47 // always a valid instance, unless it is called re-entrantly, in which case | 47 // always a valid instance, unless it is called re-entrantly, in which case |
48 // returns nullptr in the nested calls. | 48 // returns nullptr in the nested calls. |
49 static AllocationContextTracker* GetInstanceForCurrentThread(); | 49 static AllocationContextTracker* GetInstanceForCurrentThread(); |
50 | 50 |
51 // Set the thread name in the AllocationContextTracker of the current thread | 51 // Set the thread name in the AllocationContextTracker of the current thread |
52 // if capture is enabled. | 52 // if capture is enabled. |
53 static void SetCurrentThreadName(const char* name); | 53 static void SetCurrentThreadName(const char* name); |
54 | 54 |
55 // Pushes a frame onto the thread-local pseudo stack. | 55 // Pushes a frame onto the thread-local pseudo stack. |
56 void PushPseudoStackFrame(StackFrame frame); | 56 void PushPseudoStackFrame(const char* trace_event_name); |
57 | 57 |
58 // Pops a frame from the thread-local pseudo stack. | 58 // Pops a frame from the thread-local pseudo stack. |
59 void PopPseudoStackFrame(StackFrame frame); | 59 void PopPseudoStackFrame(const char* trace_event_name); |
60 | 60 |
61 // Push and pop current task's context. A stack is used to support nested | 61 // Push and pop current task's context. A stack is used to support nested |
62 // tasks and the top of the stack will be used in allocation context. | 62 // tasks and the top of the stack will be used in allocation context. |
63 void PushCurrentTaskContext(const char* context); | 63 void PushCurrentTaskContext(const char* context); |
64 void PopCurrentTaskContext(const char* context); | 64 void PopCurrentTaskContext(const char* context); |
65 | 65 |
66 // Returns a snapshot of the current thread-local context. | 66 // Returns a snapshot of the current thread-local context. |
67 AllocationContext GetContextSnapshot(); | 67 AllocationContext GetContextSnapshot(); |
68 | 68 |
69 ~AllocationContextTracker(); | 69 ~AllocationContextTracker(); |
70 | 70 |
71 private: | 71 private: |
72 AllocationContextTracker(); | 72 AllocationContextTracker(); |
73 | 73 |
74 static subtle::Atomic32 capture_enabled_; | 74 static subtle::Atomic32 capture_enabled_; |
75 | 75 |
76 // The pseudo stack where frames are |TRACE_EVENT| names. | 76 // The pseudo stack where frames are |TRACE_EVENT| names. |
77 std::vector<StackFrame> pseudo_stack_; | 77 std::vector<const char*> pseudo_stack_; |
78 | 78 |
79 // The thread name is used as the first entry in the pseudo stack. | 79 // The thread name is used as the first entry in the pseudo stack. |
80 const char* thread_name_; | 80 const char* thread_name_; |
81 | 81 |
82 // Stack of tasks' contexts. Context serves as a different dimension than | 82 // Stack of tasks' contexts. Context serves as a different dimension than |
83 // pseudo stack to cluster allocations. | 83 // pseudo stack to cluster allocations. |
84 std::vector<const char*> task_contexts_; | 84 std::vector<const char*> task_contexts_; |
85 | 85 |
86 DISALLOW_COPY_AND_ASSIGN(AllocationContextTracker); | 86 DISALLOW_COPY_AND_ASSIGN(AllocationContextTracker); |
87 }; | 87 }; |
88 | 88 |
89 } // namespace trace_event | 89 } // namespace trace_event |
90 } // namespace base | 90 } // namespace base |
91 | 91 |
92 #endif // BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ | 92 #endif // BASE_TRACE_EVENT_HEAP_PROFILER_ALLOCATION_CONTEXT_TRACKER_H_ |
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