OLD | NEW |
1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 the V8 project 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 V8_V8_PROFILER_H_ | 5 #ifndef V8_V8_PROFILER_H_ |
6 #define V8_V8_PROFILER_H_ | 6 #define V8_V8_PROFILER_H_ |
7 | 7 |
8 #include <vector> | 8 #include <vector> |
9 #include "v8.h" // NOLINT(build/include) | 9 #include "v8.h" // NOLINT(build/include) |
10 | 10 |
(...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
53 // samples don't care. | 53 // samples don't care. |
54 enum RecordCEntryFrame { kIncludeCEntryFrame, kSkipCEntryFrame }; | 54 enum RecordCEntryFrame { kIncludeCEntryFrame, kSkipCEntryFrame }; |
55 | 55 |
56 TickSample() | 56 TickSample() |
57 : state(OTHER), | 57 : state(OTHER), |
58 pc(nullptr), | 58 pc(nullptr), |
59 external_callback_entry(nullptr), | 59 external_callback_entry(nullptr), |
60 frames_count(0), | 60 frames_count(0), |
61 has_external_callback(false), | 61 has_external_callback(false), |
62 update_stats(true) {} | 62 update_stats(true) {} |
| 63 |
| 64 /** |
| 65 * Initialize a tick sample from the isolate. |
| 66 * \param isolate The isolate. |
| 67 * \param state Execution state. |
| 68 * \param record_c_entry_frame Include or skip the runtime function. |
| 69 * \param update_stats Whether update the sample to the aggregated stats. |
| 70 * \param use_simulator_reg_state When set to true and V8 is running under a |
| 71 * simulator, the method will use the simulator |
| 72 * register state rather than the one provided |
| 73 * with |state| argument. Otherwise the method |
| 74 * will use provided register |state| as is. |
| 75 */ |
63 void Init(Isolate* isolate, const v8::RegisterState& state, | 76 void Init(Isolate* isolate, const v8::RegisterState& state, |
64 RecordCEntryFrame record_c_entry_frame, bool update_stats); | 77 RecordCEntryFrame record_c_entry_frame, bool update_stats, |
65 static bool GetStackSample(Isolate* isolate, const v8::RegisterState& state, | 78 bool use_simulator_reg_state = true); |
| 79 /** |
| 80 * Get a call stack sample from the isolate. |
| 81 * \param isolate The isolate. |
| 82 * \param state Register state. |
| 83 * \param record_c_entry_frame Include or skip the runtime function. |
| 84 * \param frames Caller allocated buffer to store stack frames. |
| 85 * \param frames_limit Maximum number of frames to capture. The buffer must |
| 86 * be large enough to hold the number of frames. |
| 87 * \param sample_info The sample info is filled up by the function |
| 88 * provides number of actual captured stack frames and |
| 89 * the current VM state. |
| 90 * \param use_simulator_reg_state When set to true and V8 is running under a |
| 91 * simulator, the method will use the simulator |
| 92 * register state rather than the one provided |
| 93 * with |state| argument. Otherwise the method |
| 94 * will use provided register |state| as is. |
| 95 * \note GetStackSample is thread and signal safe and should only be called |
| 96 * when the JS thread is paused or interrupted. |
| 97 * Otherwise the behavior is undefined. |
| 98 */ |
| 99 static bool GetStackSample(Isolate* isolate, v8::RegisterState* state, |
66 RecordCEntryFrame record_c_entry_frame, | 100 RecordCEntryFrame record_c_entry_frame, |
67 void** frames, size_t frames_limit, | 101 void** frames, size_t frames_limit, |
68 v8::SampleInfo* sample_info); | 102 v8::SampleInfo* sample_info, |
| 103 bool use_simulator_reg_state = true); |
69 StateTag state; // The state of the VM. | 104 StateTag state; // The state of the VM. |
70 void* pc; // Instruction pointer. | 105 void* pc; // Instruction pointer. |
71 union { | 106 union { |
72 void* tos; // Top stack value (*sp). | 107 void* tos; // Top stack value (*sp). |
73 void* external_callback_entry; | 108 void* external_callback_entry; |
74 }; | 109 }; |
75 static const unsigned kMaxFramesCountLog2 = 8; | 110 static const unsigned kMaxFramesCountLog2 = 8; |
76 static const unsigned kMaxFramesCount = (1 << kMaxFramesCountLog2) - 1; | 111 static const unsigned kMaxFramesCount = (1 << kMaxFramesCountLog2) - 1; |
77 void* stack[kMaxFramesCount]; // Call stack. | 112 void* stack[kMaxFramesCount]; // Call stack. |
78 unsigned frames_count : kMaxFramesCountLog2; // Number of captured frames. | 113 unsigned frames_count : kMaxFramesCountLog2; // Number of captured frames. |
(...skipping 746 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
825 uint32_t index; // Index of the time interval that was changed. | 860 uint32_t index; // Index of the time interval that was changed. |
826 uint32_t count; // New value of count field for the interval with this index. | 861 uint32_t count; // New value of count field for the interval with this index. |
827 uint32_t size; // New value of size field for the interval with this index. | 862 uint32_t size; // New value of size field for the interval with this index. |
828 }; | 863 }; |
829 | 864 |
830 | 865 |
831 } // namespace v8 | 866 } // namespace v8 |
832 | 867 |
833 | 868 |
834 #endif // V8_V8_PROFILER_H_ | 869 #endif // V8_V8_PROFILER_H_ |
OLD | NEW |