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

Issue 2514113002: Dump stack trace on segfault in the VM. (Closed)
Patch Set: fix build Created 4 years, 1 month ago
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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"
(...skipping 36 matching lines...) Expand 10 before | Expand all | Expand 10 after
47 class Profiler : public AllStatic { 47 class Profiler : public AllStatic {
48 public: 48 public:
49 static void InitOnce(); 49 static void InitOnce();
50 static void Shutdown(); 50 static void Shutdown();
51 51
52 static void SetSampleDepth(intptr_t depth); 52 static void SetSampleDepth(intptr_t depth);
53 static void SetSamplePeriod(intptr_t period); 53 static void SetSamplePeriod(intptr_t period);
54 54
55 static SampleBuffer* sample_buffer() { return sample_buffer_; } 55 static SampleBuffer* sample_buffer() { return sample_buffer_; }
56 56
57 static void DumpStackTrace(void* context);
57 static void DumpStackTrace(bool native_stack_trace = true); 58 static void DumpStackTrace(bool native_stack_trace = true);
58 59
59 static void SampleAllocation(Thread* thread, intptr_t cid); 60 static void SampleAllocation(Thread* thread, intptr_t cid);
60 61
61 // SampleThread is called from inside the signal handler and hence it is very 62 // SampleThread is called from inside the signal handler and hence it is very
62 // critical that the implementation of SampleThread does not do any of the 63 // critical that the implementation of SampleThread does not do any of the
63 // following: 64 // following:
64 // * Accessing TLS -- Because on Windows the callback will be running in a 65 // * Accessing TLS -- Because on Windows the callback will be running in a
65 // different thread. 66 // different thread.
66 // * Allocating memory -- Because this takes locks which may already be 67 // * Allocating memory -- Because this takes locks which may already be
67 // held, resulting in a dead lock. 68 // held, resulting in a dead lock.
68 // * Taking a lock -- See above. 69 // * Taking a lock -- See above.
69 static void SampleThread(Thread* thread, const InterruptedThreadState& state); 70 static void SampleThread(Thread* thread, const InterruptedThreadState& state);
70 71
71 static ProfilerCounters counters() { 72 static ProfilerCounters counters() {
72 // Copies the counter values. 73 // Copies the counter values.
73 return counters_; 74 return counters_;
74 } 75 }
75 76
76 private: 77 private:
78 static void DumpStackTrace(bool native_stack_trace,
79 uword sp,
80 uword fp,
81 uword pc);
82
77 // Does not walk the thread's stack. 83 // Does not walk the thread's stack.
78 static void SampleThreadSingleFrame(Thread* thread, uintptr_t pc); 84 static void SampleThreadSingleFrame(Thread* thread, uintptr_t pc);
79 static bool initialized_; 85 static bool initialized_;
80 86
81 static SampleBuffer* sample_buffer_; 87 static SampleBuffer* sample_buffer_;
82 88
83 static ProfilerCounters counters_; 89 static ProfilerCounters counters_;
84 90
85 friend class Thread; 91 friend class Thread;
86 }; 92 };
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606 private: 612 private:
607 ZoneGrowableArray<ProcessedSample*> samples_; 613 ZoneGrowableArray<ProcessedSample*> samples_;
608 CodeLookupTable* code_lookup_table_; 614 CodeLookupTable* code_lookup_table_;
609 615
610 DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer); 616 DISALLOW_COPY_AND_ASSIGN(ProcessedSampleBuffer);
611 }; 617 };
612 618
613 } // namespace dart 619 } // namespace dart
614 620
615 #endif // RUNTIME_VM_PROFILER_H_ 621 #endif // RUNTIME_VM_PROFILER_H_
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