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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 RUNTIME_VM_PROFILER_H_ | 5 #ifndef RUNTIME_VM_PROFILER_H_ |
6 #define RUNTIME_VM_PROFILER_H_ | 6 #define RUNTIME_VM_PROFILER_H_ |
7 | 7 |
8 #include "vm/allocation.h" | 8 #include "vm/allocation.h" |
9 #include "vm/bitfield.h" | 9 #include "vm/bitfield.h" |
10 #include "vm/code_observers.h" | 10 #include "vm/code_observers.h" |
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52 public: | 52 public: |
53 static void InitOnce(); | 53 static void InitOnce(); |
54 static void Shutdown(); | 54 static void Shutdown(); |
55 | 55 |
56 static void SetSampleDepth(intptr_t depth); | 56 static void SetSampleDepth(intptr_t depth); |
57 static void SetSamplePeriod(intptr_t period); | 57 static void SetSamplePeriod(intptr_t period); |
58 | 58 |
59 static SampleBuffer* sample_buffer() { return sample_buffer_; } | 59 static SampleBuffer* sample_buffer() { return sample_buffer_; } |
60 | 60 |
61 static void DumpStackTrace(void* context); | 61 static void DumpStackTrace(void* context); |
62 static void DumpStackTrace(); | 62 static void DumpStackTrace(bool for_crash = true); |
63 | 63 |
64 static void SampleAllocation(Thread* thread, intptr_t cid); | 64 static void SampleAllocation(Thread* thread, intptr_t cid); |
65 static Sample* SampleNativeAllocation(intptr_t skip_count, | 65 static Sample* SampleNativeAllocation(intptr_t skip_count, |
66 uword address, | 66 uword address, |
67 uintptr_t allocation_size); | 67 uintptr_t allocation_size); |
68 | 68 |
69 // SampleThread is called from inside the signal handler and hence it is very | 69 // SampleThread is called from inside the signal handler and hence it is very |
70 // critical that the implementation of SampleThread does not do any of the | 70 // critical that the implementation of SampleThread does not do any of the |
71 // following: | 71 // following: |
72 // * Accessing TLS -- Because on Windows the callback will be running in a | 72 // * Accessing TLS -- Because on Windows the callback will be running in a |
73 // different thread. | 73 // different thread. |
74 // * Allocating memory -- Because this takes locks which may already be | 74 // * Allocating memory -- Because this takes locks which may already be |
75 // held, resulting in a dead lock. | 75 // held, resulting in a dead lock. |
76 // * Taking a lock -- See above. | 76 // * Taking a lock -- See above. |
77 static void SampleThread(Thread* thread, const InterruptedThreadState& state); | 77 static void SampleThread(Thread* thread, const InterruptedThreadState& state); |
78 | 78 |
79 static ProfilerCounters counters() { | 79 static ProfilerCounters counters() { |
80 // Copies the counter values. | 80 // Copies the counter values. |
81 return counters_; | 81 return counters_; |
82 } | 82 } |
83 | 83 |
84 private: | 84 private: |
85 static void DumpStackTrace(uword sp, uword fp, uword pc); | 85 static void DumpStackTrace(uword sp, uword fp, uword pc, bool for_crash); |
86 | 86 |
87 // Does not walk the thread's stack. | 87 // Does not walk the thread's stack. |
88 static void SampleThreadSingleFrame(Thread* thread, uintptr_t pc); | 88 static void SampleThreadSingleFrame(Thread* thread, uintptr_t pc); |
89 static bool initialized_; | 89 static bool initialized_; |
90 | 90 |
91 static SampleBuffer* sample_buffer_; | 91 static SampleBuffer* sample_buffer_; |
92 | 92 |
93 static ProfilerCounters counters_; | 93 static ProfilerCounters counters_; |
94 | 94 |
95 friend class Thread; | 95 friend class Thread; |
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699 private: | 699 private: |
700 ZoneGrowableArray<ProcessedSample*> samples_; | 700 ZoneGrowableArray<ProcessedSample*> samples_; |
701 CodeLookupTable* code_lookup_table_; | 701 CodeLookupTable* code_lookup_table_; |
702 | 702 |
703 DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer); | 703 DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer); |
704 }; | 704 }; |
705 | 705 |
706 } // namespace dart | 706 } // namespace dart |
707 | 707 |
708 #endif // RUNTIME_VM_PROFILER_H_ | 708 #endif // RUNTIME_VM_PROFILER_H_ |
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