1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
// Statistics on Python performance.
//
// API:
//
// - _Py_INCREF_STAT_INC() and _Py_DECREF_STAT_INC() used by Py_INCREF()
// and Py_DECREF().
// - _Py_stats variable
//
// Functions of the sys module:
//
// - sys._stats_on()
// - sys._stats_off()
// - sys._stats_clear()
// - sys._stats_dump()
//
// Python must be built with ./configure --enable-pystats to define the
// Py_STATS macro.
//
// Define _PY_INTERPRETER macro to increment interpreter_increfs and
// interpreter_decrefs. Otherwise, increment increfs and decrefs.
//
// The number of incref operations counted by `incref` and
// `interpreter_incref` is the number of increment operations, which is
// not equal to the total of all reference counts. A single increment
// operation may increase the reference count of an object by more than
// one. For example, see `_Py_RefcntAdd`.
#ifndef Py_CPYTHON_PYSTATS_H
# error "this header file must not be included directly"
#endif
#define PYSTATS_MAX_UOP_ID 512
#define SPECIALIZATION_FAILURE_KINDS 36
/* Stats for determining who is calling PyEval_EvalFrame */
#define EVAL_CALL_TOTAL 0
#define EVAL_CALL_VECTOR 1
#define EVAL_CALL_GENERATOR 2
#define EVAL_CALL_LEGACY 3
#define EVAL_CALL_FUNCTION_VECTORCALL 4
#define EVAL_CALL_BUILD_CLASS 5
#define EVAL_CALL_SLOT 6
#define EVAL_CALL_FUNCTION_EX 7
#define EVAL_CALL_API 8
#define EVAL_CALL_METHOD 9
#define EVAL_CALL_KINDS 10
typedef struct _specialization_stats {
uint64_t success;
uint64_t failure;
uint64_t hit;
uint64_t deferred;
uint64_t miss;
uint64_t deopt;
uint64_t failure_kinds[SPECIALIZATION_FAILURE_KINDS];
} SpecializationStats;
typedef struct _opcode_stats {
SpecializationStats specialization;
uint64_t execution_count;
uint64_t pair_count[256];
} OpcodeStats;
typedef struct _call_stats {
uint64_t inlined_py_calls;
uint64_t pyeval_calls;
uint64_t frames_pushed;
uint64_t frame_objects_created;
uint64_t eval_calls[EVAL_CALL_KINDS];
} CallStats;
typedef struct _object_stats {
uint64_t increfs;
uint64_t decrefs;
uint64_t interpreter_increfs;
uint64_t interpreter_decrefs;
uint64_t allocations;
uint64_t allocations512;
uint64_t allocations4k;
uint64_t allocations_big;
uint64_t frees;
uint64_t to_freelist;
uint64_t from_freelist;
uint64_t inline_values;
uint64_t dict_materialized_on_request;
uint64_t dict_materialized_new_key;
uint64_t dict_materialized_too_big;
uint64_t dict_materialized_str_subclass;
uint64_t type_cache_hits;
uint64_t type_cache_misses;
uint64_t type_cache_dunder_hits;
uint64_t type_cache_dunder_misses;
uint64_t type_cache_collisions;
/* Temporary value used during GC */
uint64_t object_visits;
} ObjectStats;
typedef struct _gc_stats {
uint64_t collections;
uint64_t object_visits;
uint64_t objects_collected;
} GCStats;
typedef struct _uop_stats {
uint64_t execution_count;
uint64_t miss;
uint64_t pair_count[PYSTATS_MAX_UOP_ID + 1];
} UOpStats;
#define _Py_UOP_HIST_SIZE 32
typedef struct _optimization_stats {
uint64_t attempts;
uint64_t traces_created;
uint64_t traces_executed;
uint64_t uops_executed;
uint64_t trace_stack_overflow;
uint64_t trace_stack_underflow;
uint64_t trace_too_long;
uint64_t trace_too_short;
uint64_t inner_loop;
uint64_t recursive_call;
uint64_t low_confidence;
uint64_t executors_invalidated;
UOpStats opcode[PYSTATS_MAX_UOP_ID + 1];
uint64_t unsupported_opcode[256];
uint64_t trace_length_hist[_Py_UOP_HIST_SIZE];
uint64_t trace_run_length_hist[_Py_UOP_HIST_SIZE];
uint64_t optimized_trace_length_hist[_Py_UOP_HIST_SIZE];
uint64_t optimizer_attempts;
uint64_t optimizer_successes;
uint64_t optimizer_failure_reason_no_memory;
uint64_t remove_globals_builtins_changed;
uint64_t remove_globals_incorrect_keys;
uint64_t error_in_opcode[PYSTATS_MAX_UOP_ID + 1];
} OptimizationStats;
typedef struct _rare_event_stats {
/* Setting an object's class, obj.__class__ = ... */
uint64_t set_class;
/* Setting the bases of a class, cls.__bases__ = ... */
uint64_t set_bases;
/* Setting the PEP 523 frame eval function, _PyInterpreterState_SetFrameEvalFunc() */
uint64_t set_eval_frame_func;
/* Modifying the builtins, __builtins__.__dict__[var] = ... */
uint64_t builtin_dict;
/* Modifying a function, e.g. func.__defaults__ = ..., etc. */
uint64_t func_modification;
/* Modifying a dict that is being watched */
uint64_t watched_dict_modification;
uint64_t watched_globals_modification;
} RareEventStats;
typedef struct _stats {
OpcodeStats opcode_stats[256];
CallStats call_stats;
ObjectStats object_stats;
OptimizationStats optimization_stats;
RareEventStats rare_event_stats;
GCStats *gc_stats;
} PyStats;
// Export for shared extensions like 'math'
PyAPI_DATA(PyStats*) _Py_stats;
#ifdef _PY_INTERPRETER
# define _Py_INCREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_increfs++; } while (0)
# define _Py_DECREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_decrefs++; } while (0)
#else
# define _Py_INCREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.increfs++; } while (0)
# define _Py_DECREF_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.decrefs++; } while (0)
#endif
|
