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// 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 1024

#define SPECIALIZATION_FAILURE_KINDS 60

/* 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 immortal_increfs;

uint64_t immortal_decrefs;

uint64_t interpreter_immortal_increfs;

uint64_t interpreter_immortal_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;

uint64_t objects_transitively_reachable;

uint64_t objects_not_transitively_reachable;

} 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 unknown_callee;

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];

// JIT memory stats

uint64_t jit_total_memory_size;

uint64_t jit_code_size;

uint64_t jit_trampoline_size;

uint64_t jit_data_size;

uint64_t jit_padding_size;

uint64_t jit_freed_memory_size;

uint64_t trace_total_memory_hist[_Py_UOP_HIST_SIZE];

} 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)

# define _Py_INCREF_IMMORTAL_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_immortal_increfs++; } while (0)

# define _Py_DECREF_IMMORTAL_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.interpreter_immortal_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)

# define _Py_INCREF_IMMORTAL_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.immortal_increfs++; } while (0)

# define _Py_DECREF_IMMORTAL_STAT_INC() do { if (_Py_stats) _Py_stats->object_stats.immortal_decrefs++; } while (0)

#endif

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