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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, 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 VM_PROFILER_H_ | 5 #ifndef VM_PROFILER_H_ |
6 #define VM_PROFILER_H_ | 6 #define VM_PROFILER_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/code_observers.h" | 9 #include "vm/code_observers.h" |
10 #include "vm/globals.h" | 10 #include "vm/globals.h" |
11 #include "vm/thread.h" | 11 #include "vm/thread.h" |
12 #include "vm/thread_interrupter.h" | 12 #include "vm/thread_interrupter.h" |
13 | 13 |
14 namespace dart { | 14 namespace dart { |
15 | 15 |
16 // Forward declarations. | 16 // Forward declarations. |
17 class JSONArray; | 17 class JSONArray; |
18 class JSONStream; | 18 class JSONStream; |
| 19 class ProfilerCodeRegionTable; |
19 struct Sample; | 20 struct Sample; |
20 | 21 |
21 // Profiler | 22 // Profiler |
22 class Profiler : public AllStatic { | 23 class Profiler : public AllStatic { |
23 public: | 24 public: |
24 static void InitOnce(); | 25 static void InitOnce(); |
25 static void Shutdown(); | 26 static void Shutdown(); |
26 | 27 |
27 static void InitProfilingForIsolate(Isolate* isolate, | 28 static void InitProfilingForIsolate(Isolate* isolate, |
28 bool shared_buffer = false); | 29 bool shared_buffer = false); |
29 static void ShutdownProfilingForIsolate(Isolate* isolate); | 30 static void ShutdownProfilingForIsolate(Isolate* isolate); |
30 | 31 |
31 static void BeginExecution(Isolate* isolate); | 32 static void BeginExecution(Isolate* isolate); |
32 static void EndExecution(Isolate* isolate); | 33 static void EndExecution(Isolate* isolate); |
33 | 34 |
34 static void PrintToJSONStream(Isolate* isolate, JSONStream* stream); | 35 static void PrintToJSONStream(Isolate* isolate, JSONStream* stream, |
35 | 36 bool full); |
36 static void WriteTracing(Isolate* isolate); | 37 static void WriteProfile(Isolate* isolate); |
37 | 38 |
38 static SampleBuffer* sample_buffer() { | 39 static SampleBuffer* sample_buffer() { |
39 return sample_buffer_; | 40 return sample_buffer_; |
40 } | 41 } |
41 | 42 |
42 private: | 43 private: |
43 static bool initialized_; | 44 static bool initialized_; |
44 static Monitor* monitor_; | 45 static Monitor* monitor_; |
45 | 46 |
46 static void WriteTracingSample(Isolate* isolate, intptr_t pid, | 47 static intptr_t ProcessSamples(Isolate* isolate, |
47 Sample* sample, JSONArray& events); | 48 ProfilerCodeRegionTable* code_region_table, |
| 49 SampleBuffer* sample_buffer); |
| 50 |
| 51 static intptr_t ProcessSample(Isolate* isolate, |
| 52 ProfilerCodeRegionTable* code_region_table, |
| 53 Sample* sample); |
48 | 54 |
49 static void RecordTickInterruptCallback(const InterruptedThreadState& state, | 55 static void RecordTickInterruptCallback(const InterruptedThreadState& state, |
50 void* data); | 56 void* data); |
51 | 57 |
52 static void RecordSampleInterruptCallback(const InterruptedThreadState& state, | 58 static void RecordSampleInterruptCallback(const InterruptedThreadState& state, |
53 void* data); | 59 void* data); |
54 | 60 |
55 static SampleBuffer* sample_buffer_; | 61 static SampleBuffer* sample_buffer_; |
56 }; | 62 }; |
57 | 63 |
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69 | 75 |
70 private: | 76 private: |
71 SampleBuffer* sample_buffer_; | 77 SampleBuffer* sample_buffer_; |
72 bool own_sample_buffer_; | 78 bool own_sample_buffer_; |
73 DISALLOW_COPY_AND_ASSIGN(IsolateProfilerData); | 79 DISALLOW_COPY_AND_ASSIGN(IsolateProfilerData); |
74 }; | 80 }; |
75 | 81 |
76 | 82 |
77 // Profile sample. | 83 // Profile sample. |
78 struct Sample { | 84 struct Sample { |
79 static const char* kLookupSymbol; | |
80 static const char* kNoSymbol; | |
81 static const char* kNoFrame; | |
82 static const intptr_t kNumStackFrames = 6; | 85 static const intptr_t kNumStackFrames = 6; |
83 enum SampleType { | 86 enum SampleType { |
84 kIsolateStart, | 87 kIsolateStart, |
85 kIsolateStop, | 88 kIsolateStop, |
86 kIsolateSample, | 89 kIsolateSample, |
87 }; | 90 }; |
88 int64_t timestamp; | 91 int64_t timestamp; |
89 ThreadId tid; | 92 ThreadId tid; |
90 Isolate* isolate; | 93 Isolate* isolate; |
91 uintptr_t pcs[kNumStackFrames]; | 94 uintptr_t pcs[kNumStackFrames]; |
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102 public: | 105 public: |
103 static const intptr_t kDefaultBufferCapacity = 120000; // 2 minutes @ 1000hz. | 106 static const intptr_t kDefaultBufferCapacity = 120000; // 2 minutes @ 1000hz. |
104 | 107 |
105 explicit SampleBuffer(intptr_t capacity = kDefaultBufferCapacity); | 108 explicit SampleBuffer(intptr_t capacity = kDefaultBufferCapacity); |
106 ~SampleBuffer(); | 109 ~SampleBuffer(); |
107 | 110 |
108 intptr_t capacity() const { return capacity_; } | 111 intptr_t capacity() const { return capacity_; } |
109 | 112 |
110 Sample* ReserveSample(); | 113 Sample* ReserveSample(); |
111 | 114 |
112 Sample* GetSample(intptr_t i) const { | 115 Sample GetSample(intptr_t i) const { |
113 ASSERT(i >= 0); | 116 ASSERT(i >= 0); |
114 ASSERT(i < capacity_); | 117 ASSERT(i < capacity_); |
115 return &samples_[i]; | 118 return samples_[i]; |
116 } | 119 } |
117 | 120 |
118 private: | 121 private: |
119 Sample* samples_; | 122 Sample* samples_; |
120 intptr_t capacity_; | 123 intptr_t capacity_; |
121 uintptr_t cursor_; | 124 uintptr_t cursor_; |
122 | 125 |
123 DISALLOW_COPY_AND_ASSIGN(SampleBuffer); | 126 DISALLOW_COPY_AND_ASSIGN(SampleBuffer); |
124 }; | 127 }; |
125 | 128 |
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149 const uintptr_t original_pc_; | 152 const uintptr_t original_pc_; |
150 const uintptr_t original_fp_; | 153 const uintptr_t original_fp_; |
151 const uintptr_t original_sp_; | 154 const uintptr_t original_sp_; |
152 uintptr_t lower_bound_; | 155 uintptr_t lower_bound_; |
153 }; | 156 }; |
154 | 157 |
155 | 158 |
156 } // namespace dart | 159 } // namespace dart |
157 | 160 |
158 #endif // VM_PROFILER_H_ | 161 #endif // VM_PROFILER_H_ |
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