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GH-131238: Core header refactor (GH-131250)

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* Moves most structs in pycore_ header files into pycore_structs.h and pycore_runtime_structs.h

* Removes many cross-header dependencies
This commit is contained in:
Mark Shannon 2025-03-17 09:19:04 +00:00 • committed by GitHub
parent 3ae67ba97e
commit a1aeec61c4
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57 changed files with 1481 additions and 1356 deletions
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53
Include/cpython/code.h
View file

@ -8,25 +8,6 @@
extern "C" {
#endif
/* Total tool ids available */
#define _PY_MONITORING_TOOL_IDS 8
/* Count of all local monitoring events */
#define _PY_MONITORING_LOCAL_EVENTS 11
/* Count of all "real" monitoring events (not derived from other events) */
#define _PY_MONITORING_UNGROUPED_EVENTS 16
/* Count of all monitoring events */
#define _PY_MONITORING_EVENTS 19
/* Tables of which tools are active for each monitored event. */
typedef struct _Py_LocalMonitors {
uint8_t tools[_PY_MONITORING_LOCAL_EVENTS];
} _Py_LocalMonitors;
typedef struct _Py_GlobalMonitors {
uint8_t tools[_PY_MONITORING_UNGROUPED_EVENTS];
} _Py_GlobalMonitors;
typedef struct {
PyObject *_co_code;
PyObject *_co_varnames;
@ -34,44 +15,12 @@ typedef struct {
PyObject *_co_freevars;
} _PyCoCached;
/* Ancillary data structure used for instrumentation.
Line instrumentation creates this with sufficient
space for one entry per code unit. The total size
of the data will be `bytes_per_entry * Py_SIZE(code)` */
typedef struct {
uint8_t bytes_per_entry;
uint8_t data[1];
} _PyCoLineInstrumentationData;
typedef struct {
int size;
int capacity;
struct _PyExecutorObject *executors[1];
} _PyExecutorArray;
/* Main data structure used for instrumentation.
* This is allocated when needed for instrumentation
*/
typedef struct {
/* Monitoring specific to this code object */
_Py_LocalMonitors local_monitors;
/* Monitoring that is active on this code object */
_Py_LocalMonitors active_monitors;
/* The tools that are to be notified for events for the matching code unit */
uint8_t *tools;
/* The version of tools when they instrument the code */
uintptr_t tool_versions[_PY_MONITORING_TOOL_IDS];
/* Information to support line events */
_PyCoLineInstrumentationData *lines;
/* The tools that are to be notified for line events for the matching code unit */
uint8_t *line_tools;
/* Information to support instruction events */
/* The underlying instructions, which can themselves be instrumented */
uint8_t *per_instruction_opcodes;
/* The tools that are to be notified for instruction events for the matching code unit */
uint8_t *per_instruction_tools;
} _PyCoMonitoringData;
#ifdef Py_GIL_DISABLED
@ -151,7 +100,7 @@ typedef struct {
_PyExecutorArray *co_executors; /* executors from optimizer */ \
_PyCoCached *_co_cached; /* cached co_* attributes */ \
uintptr_t _co_instrumentation_version; /* current instrumentation version */ \
_PyCoMonitoringData *_co_monitoring; /* Monitoring data */ \
struct _PyCoMonitoringData *_co_monitoring; /* Monitoring data */ \
Py_ssize_t _co_unique_id; /* ID used for per-thread refcounting */ \
int _co_firsttraceable; /* index of first traceable instruction */ \
/* Scratch space for extra data relating to the code object. \

1
Include/cpython/object.h
View file

@ -512,7 +512,6 @@ PyAPI_FUNC(int) PyObject_VisitManagedDict(PyObject *obj, visitproc visit, void *
PyAPI_FUNC(int) _PyObject_SetManagedDict(PyObject *obj, PyObject *new_dict);
PyAPI_FUNC(void) PyObject_ClearManagedDict(PyObject *obj);
#define TYPE_MAX_WATCHERS 8
typedef int(*PyType_WatchCallback)(PyTypeObject *);
PyAPI_FUNC(int) PyType_AddWatcher(PyType_WatchCallback callback);

38
Include/internal/pycore_atexit.h
View file

@ -12,44 +12,6 @@ extern "C" {
#endif
//###############
// runtime atexit
typedef void (*atexit_callbackfunc)(void);
struct _atexit_runtime_state {
PyMutex mutex;
#define NEXITFUNCS 32
atexit_callbackfunc callbacks[NEXITFUNCS];
int ncallbacks;
};
//###################
// interpreter atexit
typedef void (*atexit_datacallbackfunc)(void *);
typedef struct atexit_callback {
atexit_datacallbackfunc func;
void *data;
struct atexit_callback *next;
} atexit_callback;
struct atexit_state {
#ifdef Py_GIL_DISABLED
PyMutex ll_callbacks_lock;
#endif
atexit_callback *ll_callbacks;
// XXX The rest of the state could be moved to the atexit module state
// and a low-level callback added for it during module exec.
// For the moment we leave it here.
// List containing tuples with callback information.
// e.g. [(func, args, kwargs), ...]
PyObject *callbacks;
};
#ifdef Py_GIL_DISABLED
# define _PyAtExit_LockCallbacks(state) PyMutex_Lock(&state->ll_callbacks_lock);

9
Include/internal/pycore_backoff.h
View file

@ -10,14 +10,7 @@ extern "C" {
#endif
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
typedef struct {
uint16_t value_and_backoff;
} _Py_BackoffCounter;
#include "pycore_structs.h" // _Py_BackoffCounter
/* 16-bit countdown counters using exponential backoff.

85
Include/internal/pycore_ceval_state.h
View file

@ -12,16 +12,6 @@ extern "C" {
#include "pycore_gil.h" // struct _gil_runtime_state
typedef int (*_Py_pending_call_func)(void *);
struct _pending_call {
_Py_pending_call_func func;
void *arg;
int flags;
};
#define PENDINGCALLSARRAYSIZE 300
#define MAXPENDINGCALLS PENDINGCALLSARRAYSIZE
/* For interpreter-level pending calls, we want to avoid spending too
much time on pending calls in any one thread, so we apply a limit. */
@ -40,69 +30,6 @@ struct _pending_call {
pending calls for the main thread. */
#define MAXPENDINGCALLSLOOP_MAIN 0
struct _pending_calls {
PyThreadState *handling_thread;
PyMutex mutex;
/* Request for running pending calls. */
int32_t npending;
/* The maximum allowed number of pending calls.
If the queue fills up to this point then _PyEval_AddPendingCall()
will return _Py_ADD_PENDING_FULL. */
int32_t max;
/* We don't want a flood of pending calls to interrupt any one thread
for too long, so we keep a limit on the number handled per pass.
A value of 0 means there is no limit (other than the maximum
size of the list of pending calls). */
int32_t maxloop;
struct _pending_call calls[PENDINGCALLSARRAYSIZE];
int first;
int next;
};
typedef enum {
PERF_STATUS_FAILED = -1, // Perf trampoline is in an invalid state
PERF_STATUS_NO_INIT = 0, // Perf trampoline is not initialized
PERF_STATUS_OK = 1, // Perf trampoline is ready to be executed
} perf_status_t;
#ifdef PY_HAVE_PERF_TRAMPOLINE
struct code_arena_st;
struct trampoline_api_st {
void* (*init_state)(void);
void (*write_state)(void* state, const void *code_addr,
unsigned int code_size, PyCodeObject* code);
int (*free_state)(void* state);
void *state;
Py_ssize_t code_padding;
};
#endif
struct _ceval_runtime_state {
struct {
#ifdef PY_HAVE_PERF_TRAMPOLINE
perf_status_t status;
int perf_trampoline_type;
Py_ssize_t extra_code_index;
struct code_arena_st *code_arena;
struct trampoline_api_st trampoline_api;
FILE *map_file;
Py_ssize_t persist_after_fork;
#else
int _not_used;
#endif
} perf;
/* Pending calls to be made only on the main thread. */
// The signal machinery falls back on this
// so it must be especially stable and efficient.
// For example, we use a preallocated array
// for the list of pending calls.
struct _pending_calls pending_mainthread;
PyMutex sys_trace_profile_mutex;
};
#ifdef PY_HAVE_PERF_TRAMPOLINE
# define _PyEval_RUNTIME_PERF_INIT \
@ -116,18 +43,6 @@ struct _ceval_runtime_state {
#endif
struct _ceval_state {
/* This variable holds the global instrumentation version. When a thread is
running, this value is overlaid onto PyThreadState.eval_breaker so that
changes in the instrumentation version will trigger the eval breaker. */
uintptr_t instrumentation_version;
int recursion_limit;
struct _gil_runtime_state *gil;
int own_gil;
struct _pending_calls pending;
};
#ifdef __cplusplus
}
#endif

33
Include/internal/pycore_code.h
View file

@ -8,30 +8,13 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_structs.h" // _Py_CODEUNIT
#include "pycore_stackref.h" // _PyStackRef
#include "pycore_lock.h" // PyMutex
#include "pycore_backoff.h" // _Py_BackoffCounter
#include "pycore_tstate.h" // _PyThreadStateImpl
/* Each instruction in a code object is a fixed-width value,
* currently 2 bytes: 1-byte opcode + 1-byte oparg. The EXTENDED_ARG
* opcode allows for larger values but the current limit is 3 uses
* of EXTENDED_ARG (see Python/compile.c), for a maximum
* 32-bit value. This aligns with the note in Python/compile.c
* (compiler_addop_i_line) indicating that the max oparg value is
* 2**32 - 1, rather than INT_MAX.
*/
typedef union {
uint16_t cache;
struct {
uint8_t code;
uint8_t arg;
} op;
_Py_BackoffCounter counter; // First cache entry of specializable op
} _Py_CODEUNIT;
#define _PyCode_CODE(CO) _Py_RVALUE((_Py_CODEUNIT *)(CO)->co_code_adaptive)
#define _PyCode_NBYTES(CO) (Py_SIZE(CO) * (Py_ssize_t)sizeof(_Py_CODEUNIT))
@ -67,16 +50,10 @@ _py_set_opcode(_Py_CODEUNIT *word, uint8_t opcode)
#define _PyCode_HAS_INSTRUMENTATION(CODE) \
(CODE->_co_instrumentation_version > 0)
struct _py_code_state {
PyMutex mutex;
// Interned constants from code objects. Used by the free-threaded build.
struct _Py_hashtable_t *constants;
};
extern PyStatus _PyCode_Init(PyInterpreterState *interp);
extern void _PyCode_Fini(PyInterpreterState *interp);
#define CODE_MAX_WATCHERS 8
/* PEP 659
* Specialization and quickening structs and helper functions
@ -185,14 +162,6 @@ typedef struct {
#define INLINE_CACHE_ENTRIES_CONTAINS_OP CACHE_ENTRIES(_PyContainsOpCache)
// Borrowed references to common callables:
struct callable_cache {
PyObject *isinstance;
PyObject *len;
PyObject *list_append;
PyObject *object__getattribute__;
};
/* "Locals plus" for a code object is the set of locals + cell vars +
* free vars. This relates to variable names as well as offsets into
* the "fast locals" storage array of execution frames. The compiler

22
Include/internal/pycore_codecs.h
View file

@ -9,6 +9,7 @@ extern "C" {
#endif
#include "pycore_lock.h" // PyMutex
#include "pycore_runtime_structs.h" // struct codecs_state
/* Initialize codecs-related state for the given interpreter, including
registering the first codec search function. Must be called before any other
@ -70,27 +71,6 @@ extern PyObject* _PyCodecInfo_GetIncrementalEncoder(
PyObject *codec_info,
const char *errors);
// Per-interpreter state used by codecs.c.
struct codecs_state {
// A list of callable objects used to search for codecs.
PyObject *search_path;
// A dict mapping codec names to codecs returned from a callable in
// search_path.
PyObject *search_cache;
// A dict mapping error handling strategies to functions to implement them.
PyObject *error_registry;
#ifdef Py_GIL_DISABLED
// Used to safely delete a specific item from search_path.
PyMutex search_path_mutex;
#endif
// Whether or not the rest of the state is initialized.
int initialized;
};
#ifdef __cplusplus
}
#endif

4
Include/internal/pycore_context.h
View file

@ -5,9 +5,7 @@
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_hamt.h" // PyHamtObject
#define CONTEXT_MAX_WATCHERS 8
#include "pycore_structs.h"
extern PyTypeObject _PyContextTokenMissing_Type;

39
Include/internal/pycore_dtoa.h
View file

@ -11,53 +11,18 @@ extern "C" {
#include "pycore_pymath.h" // _PY_SHORT_FLOAT_REPR
typedef uint32_t ULong;
struct
Bigint {
struct Bigint *next;
int k, maxwds, sign, wds;
ULong x[1];
};
#if defined(Py_USING_MEMORY_DEBUGGER) || _PY_SHORT_FLOAT_REPR == 0
struct _dtoa_state {
int _not_used;
};
#define _dtoa_state_INIT(INTERP) \
{0}
#else // !Py_USING_MEMORY_DEBUGGER && _PY_SHORT_FLOAT_REPR != 0
#else
/* The size of the Bigint freelist */
#define Bigint_Kmax 7
/* The size of the cached powers of 5 array */
#define Bigint_Pow5size 8
#ifndef PRIVATE_MEM
#define PRIVATE_MEM 2304
#endif
#define Bigint_PREALLOC_SIZE \
((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
struct _dtoa_state {
// p5s is an array of powers of 5 of the form:
// 5**(2**(i+2)) for 0 <= i < Bigint_Pow5size
struct Bigint *p5s[Bigint_Pow5size];
// XXX This should be freed during runtime fini.
struct Bigint *freelist[Bigint_Kmax+1];
double preallocated[Bigint_PREALLOC_SIZE];
double *preallocated_next;
};
#define _dtoa_state_INIT(INTERP) \
{ \
.preallocated_next = (INTERP)->dtoa.preallocated, \
}
#endif // !Py_USING_MEMORY_DEBUGGER
#endif
extern double _Py_dg_strtod(const char *str, char **ptr);
extern char* _Py_dg_dtoa(double d, int mode, int ndigits,

17
Include/internal/pycore_fileutils.h
View file

@ -9,6 +9,7 @@ extern "C" {
#endif
#include <locale.h> // struct lconv
#include "pycore_runtime_structs.h" // _Py_error_handler
/* A routine to check if a file descriptor can be select()-ed. */
@ -19,22 +20,6 @@ extern "C" {
#define _PyIsSelectable_fd(FD) ((unsigned int)(FD) < (unsigned int)FD_SETSIZE)
#endif
struct _fileutils_state {
int force_ascii;
};
typedef enum {
_Py_ERROR_UNKNOWN=0,
_Py_ERROR_STRICT,
_Py_ERROR_SURROGATEESCAPE,
_Py_ERROR_REPLACE,
_Py_ERROR_IGNORE,
_Py_ERROR_BACKSLASHREPLACE,
_Py_ERROR_SURROGATEPASS,
_Py_ERROR_XMLCHARREFREPLACE,
_Py_ERROR_OTHER
} _Py_error_handler;
// Export for '_testinternalcapi' shared extension
PyAPI_FUNC(_Py_error_handler) _Py_GetErrorHandler(const char *errors);

14
Include/internal/pycore_floatobject.h
View file

@ -17,20 +17,6 @@ extern PyStatus _PyFloat_InitTypes(PyInterpreterState *);
extern void _PyFloat_FiniType(PyInterpreterState *);
/* other API */
enum _py_float_format_type {
_py_float_format_unknown,
_py_float_format_ieee_big_endian,
_py_float_format_ieee_little_endian,
};
struct _Py_float_runtime_state {
enum _py_float_format_type float_format;
enum _py_float_format_type double_format;
};
PyAPI_FUNC(void) _PyFloat_ExactDealloc(PyObject *op);

22
Include/internal/pycore_function.h
View file

@ -16,33 +16,11 @@ extern PyObject* _PyFunction_Vectorcall(
size_t nargsf,
PyObject *kwnames);
#define FUNC_MAX_WATCHERS 8
#define FUNC_VERSION_UNSET 0
#define FUNC_VERSION_CLEARED 1
#define FUNC_VERSION_FIRST_VALID 2
#define FUNC_VERSION_CACHE_SIZE (1<<12) /* Must be a power of 2 */
struct _func_version_cache_item {
PyFunctionObject *func;
PyObject *code;
};
struct _py_func_state {
#ifdef Py_GIL_DISABLED
// Protects next_version
PyMutex mutex;
#endif
uint32_t next_version;
// Borrowed references to function and code objects whose
// func_version % FUNC_VERSION_CACHE_SIZE
// once was equal to the index in the table.
// They are cleared when the function or code object is deallocated.
struct _func_version_cache_item func_version_cache[FUNC_VERSION_CACHE_SIZE];
};
extern PyFunctionObject* _PyFunction_FromConstructor(PyFrameConstructor *constr);
static inline int

103
Include/internal/pycore_gc.h
View file

@ -8,18 +8,7 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
/* GC information is stored BEFORE the object structure. */
typedef struct {
// Tagged pointer to next object in the list.
// 0 means the object is not tracked
uintptr_t _gc_next;
// Tagged pointer to previous object in the list.
// Lowest two bits are used for flags documented later.
uintptr_t _gc_prev;
} PyGC_Head;
#define _PyGC_Head_UNUSED PyGC_Head
#include "pycore_runtime_structs.h"
/* Get an object's GC head */
@ -214,12 +203,6 @@ static inline void _PyGC_CLEAR_FINALIZED(PyObject *op) {
#endif
}
/* GC runtime state */
/* If we change this, we need to change the default value in the
signature of gc.collect. */
#define NUM_GENERATIONS 3
/*
NOTE: about untracking of mutable objects.
@ -261,90 +244,6 @@ static inline void _PyGC_CLEAR_FINALIZED(PyObject *op) {
the algorithm was refined in response to issue #14775.
*/
struct gc_generation {
PyGC_Head head;
int threshold; /* collection threshold */
int count; /* count of allocations or collections of younger
generations */
};
struct gc_collection_stats {
/* number of collected objects */
Py_ssize_t collected;
/* total number of uncollectable objects (put into gc.garbage) */
Py_ssize_t uncollectable;
};
/* Running stats per generation */
struct gc_generation_stats {
/* total number of collections */
Py_ssize_t collections;
/* total number of collected objects */
Py_ssize_t collected;
/* total number of uncollectable objects (put into gc.garbage) */
Py_ssize_t uncollectable;
};
enum _GCPhase {
GC_PHASE_MARK = 0,
GC_PHASE_COLLECT = 1
};
struct _gc_runtime_state {
/* List of objects that still need to be cleaned up, singly linked
* via their gc headers' gc_prev pointers. */
PyObject *trash_delete_later;
/* Current call-stack depth of tp_dealloc calls. */
int trash_delete_nesting;
/* Is automatic collection enabled? */
int enabled;
int debug;
/* linked lists of container objects */
struct gc_generation young;
struct gc_generation old[2];
/* a permanent generation which won't be collected */
struct gc_generation permanent_generation;
struct gc_generation_stats generation_stats[NUM_GENERATIONS];
/* true if we are currently running the collector */
int collecting;
/* list of uncollectable objects */
PyObject *garbage;
/* a list of callbacks to be invoked when collection is performed */
PyObject *callbacks;
Py_ssize_t heap_size;
Py_ssize_t work_to_do;
/* Which of the old spaces is the visited space */
int visited_space;
int phase;
#ifdef Py_GIL_DISABLED
/* This is the number of objects that survived the last full
collection. It approximates the number of long lived objects
tracked by the GC.
(by "full collection", we mean a collection of the oldest
generation). */
Py_ssize_t long_lived_total;
/* This is the number of objects that survived all "non-full"
collections, and are awaiting to undergo a full collection for
the first time. */
Py_ssize_t long_lived_pending;
/* True if gc.freeze() has been used. */
int freeze_active;
#endif
};
#ifdef Py_GIL_DISABLED
struct _gc_thread_state {
/* Thread-local allocation count. */
Py_ssize_t alloc_count;
};
#endif
extern void _PyGC_InitState(struct _gc_runtime_state *);
extern Py_ssize_t _PyGC_Collect(PyThreadState *tstate, int generation, _PyGC_Reason reason);

72
Include/internal/pycore_global_objects.h
View file

@ -8,18 +8,6 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_context.h" // _PyContextTokenMissing
#include "pycore_gc.h" // _PyGC_Head_UNUSED
#include "pycore_global_strings.h" // struct _Py_global_strings
#include "pycore_hamt.h" // PyHamtNode_Bitmap
#include "pycore_hashtable.h" // _Py_hashtable_t
#include "pycore_typeobject.h" // pytype_slotdef
// These would be in pycore_long.h if it weren't for an include cycle.
#define _PY_NSMALLPOSINTS 257
#define _PY_NSMALLNEGINTS 5
// Only immutable objects should be considered runtime-global.
// All others must be per-interpreter.
@ -29,76 +17,16 @@ extern "C" {
#define _Py_SINGLETON(NAME) \
_Py_GLOBAL_OBJECT(singletons.NAME)
struct _Py_cached_objects {
// XXX We could statically allocate the hashtable.
_Py_hashtable_t *interned_strings;
};
struct _Py_static_objects {
struct {
/* Small integers are preallocated in this array so that they
* can be shared.
* The integers that are preallocated are those in the range
* -_PY_NSMALLNEGINTS (inclusive) to _PY_NSMALLPOSINTS (exclusive).
*/
PyLongObject small_ints[_PY_NSMALLNEGINTS + _PY_NSMALLPOSINTS];
PyBytesObject bytes_empty;
struct {
PyBytesObject ob;
char eos;
} bytes_characters[256];
struct _Py_global_strings strings;
_PyGC_Head_UNUSED _tuple_empty_gc_not_used;
PyTupleObject tuple_empty;
_PyGC_Head_UNUSED _hamt_bitmap_node_empty_gc_not_used;
PyHamtNode_Bitmap hamt_bitmap_node_empty;
_PyContextTokenMissing context_token_missing;
} singletons;
};
#define _Py_INTERP_CACHED_OBJECT(interp, NAME) \
(interp)->cached_objects.NAME
struct _Py_interp_cached_objects {
#ifdef Py_GIL_DISABLED
PyMutex interned_mutex;
#endif
PyObject *interned_strings;
/* object.__reduce__ */
PyObject *objreduce;
PyObject *type_slots_pname;
pytype_slotdef *type_slots_ptrs[MAX_EQUIV];
/* TypeVar and related types */
PyTypeObject *generic_type;
PyTypeObject *typevar_type;
PyTypeObject *typevartuple_type;
PyTypeObject *paramspec_type;
PyTypeObject *paramspecargs_type;
PyTypeObject *paramspeckwargs_type;
PyTypeObject *constevaluator_type;
};
#define _Py_INTERP_STATIC_OBJECT(interp, NAME) \
(interp)->static_objects.NAME
#define _Py_INTERP_SINGLETON(interp, NAME) \
_Py_INTERP_STATIC_OBJECT(interp, singletons.NAME)
struct _Py_interp_static_objects {
struct {
int _not_used;
// hamt_empty is here instead of global because of its weakreflist.
_PyGC_Head_UNUSED _hamt_empty_gc_not_used;
PyHamtObject hamt_empty;
PyBaseExceptionObject last_resort_memory_error;
} singletons;
};
#ifdef __cplusplus
}

2
Include/internal/pycore_global_strings.h
View file

@ -8,6 +8,8 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_global_objects.h" // struct _Py_SINGLETON
// The data structure & init here are inspired by Tools/build/deepfreeze.py.
// All field names generated by ASCII_STR() have a common prefix,

23
Include/internal/pycore_hamt.h
View file

@ -5,6 +5,7 @@
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_structs.h" // PyHamtNode
/*
HAMT tree is shaped by hashes of keys. Every group of 5 bits of a hash denotes
@ -34,28 +35,6 @@ extern PyTypeObject _PyHamtItems_Type;
#define PyHamt_Check(o) Py_IS_TYPE((o), &_PyHamt_Type)
/* Abstract tree node. */
typedef struct {
PyObject_HEAD
} PyHamtNode;
/* An HAMT immutable mapping collection. */
typedef struct {
PyObject_HEAD
PyHamtNode *h_root;
PyObject *h_weakreflist;
Py_ssize_t h_count;
} PyHamtObject;
typedef struct {
PyObject_VAR_HEAD
uint32_t b_bitmap;
PyObject *b_array[1];
} PyHamtNode_Bitmap;
/* A struct to hold the state of depth-first traverse of the tree.
HAMT is an immutable collection. Iterators will hold a strong reference

68
Include/internal/pycore_import.h
View file

@ -10,6 +10,7 @@ extern "C" {
#endif
#include "pycore_lock.h" // PyMutex
#include "pycore_runtime_structs.h" // _import_state
#include "pycore_hashtable.h" // _Py_hashtable_t
extern int _PyImport_IsInitialized(PyInterpreterState *);
@ -31,73 +32,6 @@ extern int _PyImport_FixupBuiltin(
PyObject *modules
);
struct _import_runtime_state {
/* The builtin modules (defined in config.c). */
struct _inittab *inittab;
/* The most recent value assigned to a PyModuleDef.m_base.m_index.
This is incremented each time PyModuleDef_Init() is called,
which is just about every time an extension module is imported.
See PyInterpreterState.modules_by_index for more info. */
Py_ssize_t last_module_index;
struct {
/* A lock to guard the cache. */
PyMutex mutex;
/* The actual cache of (filename, name, PyModuleDef) for modules.
Only legacy (single-phase init) extension modules are added
and only if they support multiple initialization (m_size >= 0)
or are imported in the main interpreter.
This is initialized lazily in fix_up_extension() in import.c.
Modules are added there and looked up in _imp.find_extension(). */
_Py_hashtable_t *hashtable;
} extensions;
/* Package context -- the full module name for package imports */
const char * pkgcontext;
};
struct _import_state {
/* cached sys.modules dictionary */
PyObject *modules;
/* This is the list of module objects for all legacy (single-phase init)
extension modules ever loaded in this process (i.e. imported
in this interpreter or in any other). Py_None stands in for
modules that haven't actually been imported in this interpreter.
A module's index (PyModuleDef.m_base.m_index) is used to look up
the corresponding module object for this interpreter, if any.
(See PyState_FindModule().) When any extension module
is initialized during import, its moduledef gets initialized by
PyModuleDef_Init(), and the first time that happens for each
PyModuleDef, its index gets set to the current value of
a global counter (see _PyRuntimeState.imports.last_module_index).
The entry for that index in this interpreter remains unset until
the module is actually imported here. (Py_None is used as
a placeholder.) Note that multi-phase init modules always get
an index for which there will never be a module set.
This is initialized lazily in PyState_AddModule(), which is also
where modules get added. */
PyObject *modules_by_index;
/* importlib module._bootstrap */
PyObject *importlib;
/* override for config->use_frozen_modules (for tests)
(-1: "off", 1: "on", 0: no override) */
int override_frozen_modules;
int override_multi_interp_extensions_check;
#ifdef HAVE_DLOPEN
int dlopenflags;
#endif
PyObject *import_func;
/* The global import lock. */
_PyRecursiveMutex lock;
/* diagnostic info in PyImport_ImportModuleLevelObject() */
struct {
int import_level;
PyTime_t accumulated;
int header;
} find_and_load;
};
#ifdef HAVE_DLOPEN
# include <dlfcn.h> // RTLD_NOW, RTLD_LAZY
# if HAVE_DECL_RTLD_NOW

24
Include/internal/pycore_index_pool.h
View file

@ -13,32 +13,12 @@ extern "C" {
#ifdef Py_GIL_DISABLED
#include "pycore_interp_structs.h"
// This contains code for allocating unique indices in an array. It is used by
// the free-threaded build to assign each thread a globally unique index into
// each code object's thread-local bytecode array.
// A min-heap of indices
typedef struct _PyIndexHeap {
int32_t *values;
// Number of items stored in values
Py_ssize_t size;
// Maximum number of items that can be stored in values
Py_ssize_t capacity;
} _PyIndexHeap;
// An unbounded pool of indices. Indices are allocated starting from 0. They
// may be released back to the pool once they are no longer in use.
typedef struct _PyIndexPool {
PyMutex mutex;
// Min heap of indices available for allocation
_PyIndexHeap free_indices;
// Next index to allocate if no free indices are available
int32_t next_index;
} _PyIndexPool;
// Allocate the smallest available index. Returns -1 on error.
extern int32_t _PyIndexPool_AllocIndex(_PyIndexPool *indices);

71
Include/internal/pycore_instruments.h
View file

@ -5,14 +5,12 @@
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_frame.h" // _PyInterpreterFrame
#include "pycore_structs.h" // _Py_CODEUNIT
#ifdef __cplusplus
extern "C" {
#endif
#define PY_MONITORING_TOOL_IDS 8
typedef uint32_t _PyMonitoringEventSet;
/* Tool IDs */
@ -36,32 +34,32 @@ int _PyMonitoring_GetLocalEvents(PyCodeObject *code, int tool_id, _PyMonitoringE
extern int
_Py_call_instrumentation(PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *instr);
struct _PyInterpreterFrame *frame, _Py_CODEUNIT *instr);
extern int
_Py_call_instrumentation_line(PyThreadState *tstate, _PyInterpreterFrame* frame,
_Py_call_instrumentation_line(PyThreadState *tstate, struct _PyInterpreterFrame* frame,
_Py_CODEUNIT *instr, _Py_CODEUNIT *prev);
extern int
_Py_call_instrumentation_instruction(
PyThreadState *tstate, _PyInterpreterFrame* frame, _Py_CODEUNIT *instr);
PyThreadState *tstate, struct _PyInterpreterFrame* frame, _Py_CODEUNIT *instr);
_Py_CODEUNIT *
_Py_call_instrumentation_jump(
_Py_CODEUNIT *instr, PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *src, _Py_CODEUNIT *dest);
struct _PyInterpreterFrame *frame, _Py_CODEUNIT *src, _Py_CODEUNIT *dest);
extern int
_Py_call_instrumentation_arg(PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg);
struct _PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg);
extern int
_Py_call_instrumentation_2args(PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
struct _PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
extern void
_Py_call_instrumentation_exc2(PyThreadState *tstate, int event,
_PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
struct _PyInterpreterFrame *frame, _Py_CODEUNIT *instr, PyObject *arg0, PyObject *arg1);
extern int
_Py_Instrumentation_GetLine(PyCodeObject *code, int index);
@ -69,6 +67,59 @@ _Py_Instrumentation_GetLine(PyCodeObject *code, int index);
extern PyObject _PyInstrumentation_MISSING;
extern PyObject _PyInstrumentation_DISABLE;
/* Total tool ids available */
#define PY_MONITORING_TOOL_IDS 8
/* Count of all local monitoring events */
#define _PY_MONITORING_LOCAL_EVENTS 11
/* Count of all "real" monitoring events (not derived from other events) */
#define _PY_MONITORING_UNGROUPED_EVENTS 16
/* Count of all monitoring events */
#define _PY_MONITORING_EVENTS 19
/* Tables of which tools are active for each monitored event. */
typedef struct _Py_LocalMonitors {
uint8_t tools[_PY_MONITORING_LOCAL_EVENTS];
} _Py_LocalMonitors;
typedef struct _Py_GlobalMonitors {
uint8_t tools[_PY_MONITORING_UNGROUPED_EVENTS];
} _Py_GlobalMonitors;
/* Ancillary data structure used for instrumentation.
Line instrumentation creates this with sufficient
space for one entry per code unit. The total size
of the data will be `bytes_per_entry * Py_SIZE(code)` */
typedef struct {
uint8_t bytes_per_entry;
uint8_t data[1];
} _PyCoLineInstrumentationData;
/* Main data structure used for instrumentation.
* This is allocated when needed for instrumentation
*/
typedef struct _PyCoMonitoringData {
/* Monitoring specific to this code object */
_Py_LocalMonitors local_monitors;
/* Monitoring that is active on this code object */
_Py_LocalMonitors active_monitors;
/* The tools that are to be notified for events for the matching code unit */
uint8_t *tools;
/* The version of tools when they instrument the code */
uintptr_t tool_versions[PY_MONITORING_TOOL_IDS];
/* Information to support line events */
_PyCoLineInstrumentationData *lines;
/* The tools that are to be notified for line events for the matching code unit */
uint8_t *line_tools;
/* Information to support instruction events */
/* The underlying instructions, which can themselves be instrumented */
uint8_t *per_instruction_opcodes;
/* The tools that are to be notified for instruction events for the matching code unit */
uint8_t *per_instruction_tools;
} _PyCoMonitoringData;
#ifdef __cplusplus
}
#endif

251
Include/internal/pycore_interp.h
View file

@ -10,8 +10,7 @@ extern "C" {
#include <stdbool.h> // bool
#include "pycore_ast_state.h" // struct ast_state
#include "pycore_atexit.h" // struct atexit_state
#include "pycore_runtime_structs.h"
#include "pycore_ceval_state.h" // struct _ceval_state
#include "pycore_code.h" // struct callable_cache
#include "pycore_codecs.h" // struct codecs_state
@ -43,70 +42,9 @@ extern "C" {
#include "pycore_warnings.h" // struct _warnings_runtime_state
struct _Py_long_state {
int max_str_digits;
};
// Support for stop-the-world events. This exists in both the PyRuntime struct
// for global pauses and in each PyInterpreterState for per-interpreter pauses.
struct _stoptheworld_state {
PyMutex mutex; // Serializes stop-the-world attempts.
// NOTE: The below fields are protected by HEAD_LOCK(runtime), not by the
// above mutex.
bool requested; // Set when a pause is requested.
bool world_stopped; // Set when the world is stopped.
bool is_global; // Set when contained in PyRuntime struct.
PyEvent stop_event; // Set when thread_countdown reaches zero.
Py_ssize_t thread_countdown; // Number of threads that must pause.
PyThreadState *requester; // Thread that requested the pause (may be NULL).
};
#ifdef Py_GIL_DISABLED
// This should be prime but otherwise the choice is arbitrary. A larger value
// increases concurrency at the expense of memory.
# define NUM_WEAKREF_LIST_LOCKS 127
#endif
/* cross-interpreter data registry */
/* Tracks some rare events per-interpreter, used by the optimizer to turn on/off
specific optimizations. */
typedef struct _rare_events {
/* Setting an object's class, obj.__class__ = ... */
uint8_t set_class;
/* Setting the bases of a class, cls.__bases__ = ... */
uint8_t set_bases;
/* Setting the PEP 523 frame eval function, _PyInterpreterState_SetFrameEvalFunc() */
uint8_t set_eval_frame_func;
/* Modifying the builtins, __builtins__.__dict__[var] = ... */
uint8_t builtin_dict;
/* Modifying a function, e.g. func.__defaults__ = ..., etc. */
uint8_t func_modification;
} _rare_events;
/* interpreter state */
/* PyInterpreterState holds the global state for one of the runtime's
interpreters. Typically the initial (main) interpreter is the only one.
The PyInterpreterState typedef is in Include/pytypedefs.h.
*/
struct _is {
/* This struct contains the eval_breaker,
* which is by far the hottest field in this struct
* and should be placed at the beginning. */
struct _ceval_state ceval;
PyInterpreterState *next;
int64_t id;
Py_ssize_t id_refcount;
int requires_idref;
#define _PyInterpreterState_WHENCE_NOTSET -1
#define _PyInterpreterState_WHENCE_UNKNOWN 0
#define _PyInterpreterState_WHENCE_RUNTIME 1
@ -115,193 +53,6 @@ struct _is {
#define _PyInterpreterState_WHENCE_XI 4
#define _PyInterpreterState_WHENCE_STDLIB 5
#define _PyInterpreterState_WHENCE_MAX 5
long _whence;
/* Has been initialized to a safe state.
In order to be effective, this must be set to 0 during or right
after allocation. */
int _initialized;
/* Has been fully initialized via pylifecycle.c. */
int _ready;
int finalizing;
uintptr_t last_restart_version;
struct pythreads {
uint64_t next_unique_id;
/* The linked list of threads, newest first. */
PyThreadState *head;
_PyThreadStateImpl *preallocated;
/* The thread currently executing in the __main__ module, if any. */
PyThreadState *main;
/* Used in Modules/_threadmodule.c. */
Py_ssize_t count;
/* Support for runtime thread stack size tuning.
A value of 0 means using the platform's default stack size
or the size specified by the THREAD_STACK_SIZE macro. */
/* Used in Python/thread.c. */
size_t stacksize;
} threads;
/* Reference to the _PyRuntime global variable. This field exists
to not have to pass runtime in addition to tstate to a function.
Get runtime from tstate: tstate->interp->runtime. */
struct pyruntimestate *runtime;
/* Set by Py_EndInterpreter().
Use _PyInterpreterState_GetFinalizing()
and _PyInterpreterState_SetFinalizing()
to access it, don't access it directly. */
PyThreadState* _finalizing;
/* The ID of the OS thread in which we are finalizing. */
unsigned long _finalizing_id;
struct _gc_runtime_state gc;
/* The following fields are here to avoid allocation during init.
The data is exposed through PyInterpreterState pointer fields.
These fields should not be accessed directly outside of init.
All other PyInterpreterState pointer fields are populated when
needed and default to NULL.
For now there are some exceptions to that rule, which require
allocation during init. These will be addressed on a case-by-case
basis. Also see _PyRuntimeState regarding the various mutex fields.
*/
// Dictionary of the sys module
PyObject *sysdict;
// Dictionary of the builtins module
PyObject *builtins;
struct _import_state imports;
/* The per-interpreter GIL, which might not be used. */
struct _gil_runtime_state _gil;
/* ---------- IMPORTANT ---------------------------
The fields above this line are declared as early as
possible to facilitate out-of-process observability
tools. */
struct codecs_state codecs;
PyConfig config;
unsigned long feature_flags;
PyObject *dict; /* Stores per-interpreter state */
PyObject *sysdict_copy;
PyObject *builtins_copy;
// Initialized to _PyEval_EvalFrameDefault().
_PyFrameEvalFunction eval_frame;
PyFunction_WatchCallback func_watchers[FUNC_MAX_WATCHERS];
// One bit is set for each non-NULL entry in func_watchers
uint8_t active_func_watchers;
Py_ssize_t co_extra_user_count;
freefunc co_extra_freefuncs[MAX_CO_EXTRA_USERS];
/* cross-interpreter data and utils */
_PyXI_state_t xi;
#ifdef HAVE_FORK
PyObject *before_forkers;
PyObject *after_forkers_parent;
PyObject *after_forkers_child;
#endif
struct _warnings_runtime_state warnings;
struct atexit_state atexit;
struct _stoptheworld_state stoptheworld;
struct _qsbr_shared qsbr;
#if defined(Py_GIL_DISABLED)
struct _mimalloc_interp_state mimalloc;
struct _brc_state brc; // biased reference counting state
struct _Py_unique_id_pool unique_ids; // object ids for per-thread refcounts
PyMutex weakref_locks[NUM_WEAKREF_LIST_LOCKS];
_PyIndexPool tlbc_indices;
#endif
// Per-interpreter list of tasks, any lingering tasks from thread
// states gets added here and removed from the corresponding
// thread state's list.
struct llist_node asyncio_tasks_head;
// `asyncio_tasks_lock` is used when tasks are moved
// from thread's list to interpreter's list.
PyMutex asyncio_tasks_lock;
// Per-interpreter state for the obmalloc allocator. For the main
// interpreter and for all interpreters that don't have their
// own obmalloc state, this points to the static structure in
// obmalloc.c obmalloc_state_main. For other interpreters, it is
// heap allocated by _PyMem_init_obmalloc() and freed when the
// interpreter structure is freed. In the case of a heap allocated
// obmalloc state, it is not safe to hold on to or use memory after
// the interpreter is freed. The obmalloc state corresponding to
// that allocated memory is gone. See free_obmalloc_arenas() for
// more comments.
struct _obmalloc_state *obmalloc;
PyObject *audit_hooks;
PyType_WatchCallback type_watchers[TYPE_MAX_WATCHERS];
PyCode_WatchCallback code_watchers[CODE_MAX_WATCHERS];
PyContext_WatchCallback context_watchers[CONTEXT_MAX_WATCHERS];
// One bit is set for each non-NULL entry in code_watchers
uint8_t active_code_watchers;
uint8_t active_context_watchers;
struct _py_object_state object_state;
struct _Py_unicode_state unicode;
struct _Py_long_state long_state;
struct _dtoa_state dtoa;
struct _py_func_state func_state;
struct _py_code_state code_state;
struct _Py_dict_state dict_state;
struct _Py_exc_state exc_state;
struct _Py_mem_interp_free_queue mem_free_queue;
struct ast_state ast;
struct types_state types;
struct callable_cache callable_cache;
bool jit;
_PyExecutorObject *executor_list_head;
size_t trace_run_counter;
_rare_events rare_events;
PyDict_WatchCallback builtins_dict_watcher;
_Py_GlobalMonitors monitors;
bool sys_profile_initialized;
bool sys_trace_initialized;
Py_ssize_t sys_profiling_threads; /* Count of threads with c_profilefunc set */
Py_ssize_t sys_tracing_threads; /* Count of threads with c_tracefunc set */
PyObject *monitoring_callables[PY_MONITORING_TOOL_IDS][_PY_MONITORING_EVENTS];
PyObject *monitoring_tool_names[PY_MONITORING_TOOL_IDS];
uintptr_t monitoring_tool_versions[PY_MONITORING_TOOL_IDS];
struct _Py_interp_cached_objects cached_objects;
struct _Py_interp_static_objects static_objects;
Py_ssize_t _interactive_src_count;
/* the initial PyInterpreterState.threads.head */
_PyThreadStateImpl _initial_thread;
// _initial_thread should be the last field of PyInterpreterState.
// See https://github.com/python/cpython/issues/127117.
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
uint64_t next_stackref;
_Py_hashtable_t *open_stackrefs_table;
# ifdef Py_STACKREF_CLOSE_DEBUG
_Py_hashtable_t *closed_stackrefs_table;
# endif
#endif
};
/* other API */

967
Include/internal/pycore_interp_structs.h Normal file
View file

@ -0,0 +1,967 @@
#ifndef Py_INTERNAL_INTERP_STRUCTS_H
#define Py_INTERNAL_INTERP_STRUCTS_H
#ifdef __cplusplus
extern "C" {
#endif
#include "pycore_structs.h"
#include "pycore_pymath.h" // _PY_SHORT_FLOAT_REPR
#include "pycore_llist.h"
#include "pycore_ast_state.h" // struct ast_state
/* This file contains the struct definitions for interpreter state
* and other necessary structs */
#define CODE_MAX_WATCHERS 8
#define CONTEXT_MAX_WATCHERS 8
#define FUNC_MAX_WATCHERS 8
#define TYPE_MAX_WATCHERS 8
#ifdef Py_GIL_DISABLED
// This should be prime but otherwise the choice is arbitrary. A larger value
// increases concurrency at the expense of memory.
# define NUM_WEAKREF_LIST_LOCKS 127
#endif
typedef int (*_Py_pending_call_func)(void *);
struct _pending_call {
_Py_pending_call_func func;
void *arg;
int flags;
};
#define PENDINGCALLSARRAYSIZE 300
struct _pending_calls {
PyThreadState *handling_thread;
PyMutex mutex;
/* Request for running pending calls. */
int32_t npending;
/* The maximum allowed number of pending calls.
If the queue fills up to this point then _PyEval_AddPendingCall()
will return _Py_ADD_PENDING_FULL. */
int32_t max;
/* We don't want a flood of pending calls to interrupt any one thread
for too long, so we keep a limit on the number handled per pass.
A value of 0 means there is no limit (other than the maximum
size of the list of pending calls). */
int32_t maxloop;
struct _pending_call calls[PENDINGCALLSARRAYSIZE];
int first;
int next;
};
typedef enum {
PERF_STATUS_FAILED = -1, // Perf trampoline is in an invalid state
PERF_STATUS_NO_INIT = 0, // Perf trampoline is not initialized
PERF_STATUS_OK = 1, // Perf trampoline is ready to be executed
} perf_status_t;
#ifdef PY_HAVE_PERF_TRAMPOLINE
struct code_arena_st;
struct trampoline_api_st {
void* (*init_state)(void);
void (*write_state)(void* state, const void *code_addr,
unsigned int code_size, PyCodeObject* code);
int (*free_state)(void* state);
void *state;
Py_ssize_t code_padding;
};
#endif
struct _ceval_runtime_state {
struct {
#ifdef PY_HAVE_PERF_TRAMPOLINE
perf_status_t status;
int perf_trampoline_type;
Py_ssize_t extra_code_index;
struct code_arena_st *code_arena;
struct trampoline_api_st trampoline_api;
FILE *map_file;
Py_ssize_t persist_after_fork;
#else
int _not_used;
#endif
} perf;
/* Pending calls to be made only on the main thread. */
// The signal machinery falls back on this
// so it must be especially stable and efficient.
// For example, we use a preallocated array
// for the list of pending calls.
struct _pending_calls pending_mainthread;
PyMutex sys_trace_profile_mutex;
};
struct _ceval_state {
/* This variable holds the global instrumentation version. When a thread is
running, this value is overlaid onto PyThreadState.eval_breaker so that
changes in the instrumentation version will trigger the eval breaker. */
uintptr_t instrumentation_version;
int recursion_limit;
struct _gil_runtime_state *gil;
int own_gil;
struct _pending_calls pending;
};
//###############
// runtime atexit
typedef void (*atexit_callbackfunc)(void);
struct _atexit_runtime_state {
PyMutex mutex;
#define NEXITFUNCS 32
atexit_callbackfunc callbacks[NEXITFUNCS];
int ncallbacks;
};
//###################
// interpreter atexit
typedef void (*atexit_datacallbackfunc)(void *);
typedef struct atexit_callback {
atexit_datacallbackfunc func;
void *data;
struct atexit_callback *next;
} atexit_callback;
struct atexit_state {
#ifdef Py_GIL_DISABLED
PyMutex ll_callbacks_lock;
#endif
atexit_callback *ll_callbacks;
// XXX The rest of the state could be moved to the atexit module state
// and a low-level callback added for it during module exec.
// For the moment we leave it here.
// List containing tuples with callback information.
// e.g. [(func, args, kwargs), ...]
PyObject *callbacks;
};
/****** Garbage collector **********/
/* GC information is stored BEFORE the object structure. */
typedef struct {
// Tagged pointer to next object in the list.
// 0 means the object is not tracked
uintptr_t _gc_next;
// Tagged pointer to previous object in the list.
// Lowest two bits are used for flags documented later.
uintptr_t _gc_prev;
} PyGC_Head;
#define _PyGC_Head_UNUSED PyGC_Head
struct gc_generation {
PyGC_Head head;
int threshold; /* collection threshold */
int count; /* count of allocations or collections of younger
generations */
};
struct gc_collection_stats {
/* number of collected objects */
Py_ssize_t collected;
/* total number of uncollectable objects (put into gc.garbage) */
Py_ssize_t uncollectable;
};
/* Running stats per generation */
struct gc_generation_stats {
/* total number of collections */
Py_ssize_t collections;
/* total number of collected objects */
Py_ssize_t collected;
/* total number of uncollectable objects (put into gc.garbage) */
Py_ssize_t uncollectable;
};
enum _GCPhase {
GC_PHASE_MARK = 0,
GC_PHASE_COLLECT = 1
};
/* If we change this, we need to change the default value in the
signature of gc.collect. */
#define NUM_GENERATIONS 3
struct _gc_runtime_state {
/* List of objects that still need to be cleaned up, singly linked
* via their gc headers' gc_prev pointers. */
PyObject *trash_delete_later;
/* Current call-stack depth of tp_dealloc calls. */
int trash_delete_nesting;
/* Is automatic collection enabled? */
int enabled;
int debug;
/* linked lists of container objects */
struct gc_generation young;
struct gc_generation old[2];
/* a permanent generation which won't be collected */
struct gc_generation permanent_generation;
struct gc_generation_stats generation_stats[NUM_GENERATIONS];
/* true if we are currently running the collector */
int collecting;
/* list of uncollectable objects */
PyObject *garbage;
/* a list of callbacks to be invoked when collection is performed */
PyObject *callbacks;
Py_ssize_t heap_size;
Py_ssize_t work_to_do;
/* Which of the old spaces is the visited space */
int visited_space;
int phase;
#ifdef Py_GIL_DISABLED
/* This is the number of objects that survived the last full
collection. It approximates the number of long lived objects
tracked by the GC.
(by "full collection", we mean a collection of the oldest
generation). */
Py_ssize_t long_lived_total;
/* This is the number of objects that survived all "non-full"
collections, and are awaiting to undergo a full collection for
the first time. */
Py_ssize_t long_lived_pending;
/* True if gc.freeze() has been used. */
int freeze_active;
#endif
};
#ifdef Py_GIL_DISABLED
struct _gc_thread_state {
/* Thread-local allocation count. */
Py_ssize_t alloc_count;
};
#endif
#include "pycore_gil.h"
/****** Thread state **************/
#include "pytypedefs.h"
#include "pystate.h"
#include "pycore_tstate.h"
/**** Import ********/
struct _import_runtime_state {
/* The builtin modules (defined in config.c). */
struct _inittab *inittab;
/* The most recent value assigned to a PyModuleDef.m_base.m_index.
This is incremented each time PyModuleDef_Init() is called,
which is just about every time an extension module is imported.
See PyInterpreterState.modules_by_index for more info. */
Py_ssize_t last_module_index;
struct {
/* A lock to guard the cache. */
PyMutex mutex;
/* The actual cache of (filename, name, PyModuleDef) for modules.
Only legacy (single-phase init) extension modules are added
and only if they support multiple initialization (m_size >= 0)
or are imported in the main interpreter.
This is initialized lazily in fix_up_extension() in import.c.
Modules are added there and looked up in _imp.find_extension(). */
struct _Py_hashtable_t *hashtable;
} extensions;
/* Package context -- the full module name for package imports */
const char * pkgcontext;
};
struct _import_state {
/* cached sys.modules dictionary */
PyObject *modules;
/* This is the list of module objects for all legacy (single-phase init)
extension modules ever loaded in this process (i.e. imported
in this interpreter or in any other). Py_None stands in for
modules that haven't actually been imported in this interpreter.
A module's index (PyModuleDef.m_base.m_index) is used to look up
the corresponding module object for this interpreter, if any.
(See PyState_FindModule().) When any extension module
is initialized during import, its moduledef gets initialized by
PyModuleDef_Init(), and the first time that happens for each
PyModuleDef, its index gets set to the current value of
a global counter (see _PyRuntimeState.imports.last_module_index).
The entry for that index in this interpreter remains unset until
the module is actually imported here. (Py_None is used as
a placeholder.) Note that multi-phase init modules always get
an index for which there will never be a module set.
This is initialized lazily in PyState_AddModule(), which is also
where modules get added. */
PyObject *modules_by_index;
/* importlib module._bootstrap */
PyObject *importlib;
/* override for config->use_frozen_modules (for tests)
(-1: "off", 1: "on", 0: no override) */
int override_frozen_modules;
int override_multi_interp_extensions_check;
#ifdef HAVE_DLOPEN
int dlopenflags;
#endif
PyObject *import_func;
/* The global import lock. */
_PyRecursiveMutex lock;
/* diagnostic info in PyImport_ImportModuleLevelObject() */
struct {
int import_level;
PyTime_t accumulated;
int header;
} find_and_load;
};
/********** Interpreter state **************/
#include "pycore_object_state.h"
#include "pycore_crossinterp.h"
struct _Py_long_state {
int max_str_digits;
};
struct codecs_state {
// A list of callable objects used to search for codecs.
PyObject *search_path;
// A dict mapping codec names to codecs returned from a callable in
// search_path.
PyObject *search_cache;
// A dict mapping error handling strategies to functions to implement them.
PyObject *error_registry;
#ifdef Py_GIL_DISABLED
// Used to safely delete a specific item from search_path.
PyMutex search_path_mutex;
#endif
// Whether or not the rest of the state is initialized.
int initialized;
};
// Support for stop-the-world events. This exists in both the PyRuntime struct
// for global pauses and in each PyInterpreterState for per-interpreter pauses.
struct _stoptheworld_state {
PyMutex mutex; // Serializes stop-the-world attempts.
// NOTE: The below fields are protected by HEAD_LOCK(runtime), not by the
// above mutex.
bool requested; // Set when a pause is requested.
bool world_stopped; // Set when the world is stopped.
bool is_global; // Set when contained in PyRuntime struct.
PyEvent stop_event; // Set when thread_countdown reaches zero.
Py_ssize_t thread_countdown; // Number of threads that must pause.
PyThreadState *requester; // Thread that requested the pause (may be NULL).
};
/* Tracks some rare events per-interpreter, used by the optimizer to turn on/off
specific optimizations. */
typedef struct _rare_events {
/* Setting an object's class, obj.__class__ = ... */
uint8_t set_class;
/* Setting the bases of a class, cls.__bases__ = ... */
uint8_t set_bases;
/* Setting the PEP 523 frame eval function, _PyInterpreterState_SetFrameEvalFunc() */
uint8_t set_eval_frame_func;
/* Modifying the builtins, __builtins__.__dict__[var] = ... */
uint8_t builtin_dict;
/* Modifying a function, e.g. func.__defaults__ = ..., etc. */
uint8_t func_modification;
} _rare_events;
struct
Bigint {
struct Bigint *next;
int k, maxwds, sign, wds;
uint32_t x[1];
};
#if defined(Py_USING_MEMORY_DEBUGGER) || _PY_SHORT_FLOAT_REPR == 0
struct _dtoa_state {
int _not_used;
};
#else // !Py_USING_MEMORY_DEBUGGER && _PY_SHORT_FLOAT_REPR != 0
/* The size of the Bigint freelist */
#define Bigint_Kmax 7
/* The size of the cached powers of 5 array */
#define Bigint_Pow5size 8
#ifndef PRIVATE_MEM
#define PRIVATE_MEM 2304
#endif
#define Bigint_PREALLOC_SIZE \
((PRIVATE_MEM+sizeof(double)-1)/sizeof(double))
struct _dtoa_state {
// p5s is an array of powers of 5 of the form:
// 5**(2**(i+2)) for 0 <= i < Bigint_Pow5size
struct Bigint *p5s[Bigint_Pow5size];
// XXX This should be freed during runtime fini.
struct Bigint *freelist[Bigint_Kmax+1];
double preallocated[Bigint_PREALLOC_SIZE];
double *preallocated_next;
};
#endif // !Py_USING_MEMORY_DEBUGGER
struct _py_code_state {
PyMutex mutex;
// Interned constants from code objects. Used by the free-threaded build.
struct _Py_hashtable_t *constants;
};
#define FUNC_VERSION_CACHE_SIZE (1<<12) /* Must be a power of 2 */
struct _func_version_cache_item {
PyFunctionObject *func;
PyObject *code;
};
struct _py_func_state {
#ifdef Py_GIL_DISABLED
// Protects next_version
PyMutex mutex;
#endif
uint32_t next_version;
// Borrowed references to function and code objects whose
// func_version % FUNC_VERSION_CACHE_SIZE
// once was equal to the index in the table.
// They are cleared when the function or code object is deallocated.
struct _func_version_cache_item func_version_cache[FUNC_VERSION_CACHE_SIZE];
};
#include "pycore_dict_state.h"
#include "pycore_exceptions.h"
/****** type state *********/
/* For now we hard-code this to a value for which we are confident
all the static builtin types will fit (for all builds). */
#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES 200
#define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10
#define _Py_MAX_MANAGED_STATIC_TYPES \
(_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES + _Py_MAX_MANAGED_STATIC_EXT_TYPES)
struct _types_runtime_state {
/* Used to set PyTypeObject.tp_version_tag for core static types. */
// bpo-42745: next_version_tag remains shared by all interpreters
// because of static types.
unsigned int next_version_tag;
struct {
struct {
PyTypeObject *type;
int64_t interp_count;
} types[_Py_MAX_MANAGED_STATIC_TYPES];
} managed_static;
};
// Type attribute lookup cache: speed up attribute and method lookups,
// see _PyType_Lookup().
struct type_cache_entry {
unsigned int version; // initialized from type->tp_version_tag
#ifdef Py_GIL_DISABLED
_PySeqLock sequence;
#endif
PyObject *name; // reference to exactly a str or None
PyObject *value; // borrowed reference or NULL
};
#define MCACHE_SIZE_EXP 12
struct type_cache {
struct type_cache_entry hashtable[1 << MCACHE_SIZE_EXP];
};
typedef struct {
PyTypeObject *type;
int isbuiltin;
int readying;
int ready;
// XXX tp_dict can probably be statically allocated,
// instead of dynamically and stored on the interpreter.
PyObject *tp_dict;
PyObject *tp_subclasses;
/* We never clean up weakrefs for static builtin types since
they will effectively never get triggered. However, there
are also some diagnostic uses for the list of weakrefs,
so we still keep it. */
PyObject *tp_weaklist;
} managed_static_type_state;
#define TYPE_VERSION_CACHE_SIZE (1<<12) /* Must be a power of 2 */
struct types_state {
/* Used to set PyTypeObject.tp_version_tag.
It starts at _Py_MAX_GLOBAL_TYPE_VERSION_TAG + 1,
where all those lower numbers are used for core static types. */
unsigned int next_version_tag;
struct type_cache type_cache;
/* Every static builtin type is initialized for each interpreter
during its own initialization, including for the main interpreter
during global runtime initialization. This is done by calling
_PyStaticType_InitBuiltin().
The first time a static builtin type is initialized, all the
normal PyType_Ready() stuff happens. The only difference from
normal is that there are three PyTypeObject fields holding
objects which are stored here (on PyInterpreterState) rather
than in the corresponding PyTypeObject fields. Those are:
tp_dict (cls.__dict__), tp_subclasses (cls.__subclasses__),
and tp_weaklist.
When a subinterpreter is initialized, each static builtin type
is still initialized, but only the interpreter-specific portion,
namely those three objects.
Those objects are stored in the PyInterpreterState.types.builtins
array, at the index corresponding to each specific static builtin
type. That index (a size_t value) is stored in the tp_subclasses
field. For static builtin types, we re-purposed the now-unused
tp_subclasses to avoid adding another field to PyTypeObject.
In all other cases tp_subclasses holds a dict like before.
(The field was previously defined as PyObject*, but is now void*
to reflect its dual use.)
The index for each static builtin type isn't statically assigned.
Instead it is calculated the first time a type is initialized
(by the main interpreter). The index matches the order in which
the type was initialized relative to the others. The actual
value comes from the current value of num_builtins_initialized,
as each type is initialized for the main interpreter.
num_builtins_initialized is incremented once for each static
builtin type. Once initialization is over for a subinterpreter,
the value will be the same as for all other interpreters. */
struct {
size_t num_initialized;
managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES];
} builtins;
/* We apply a similar strategy for managed extension modules. */
struct {
size_t num_initialized;
size_t next_index;
managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_EXT_TYPES];
} for_extensions;
PyMutex mutex;
// Borrowed references to type objects whose
// tp_version_tag % TYPE_VERSION_CACHE_SIZE
// once was equal to the index in the table.
// They are cleared when the type object is deallocated.
PyTypeObject *type_version_cache[TYPE_VERSION_CACHE_SIZE];
};
struct _warnings_runtime_state {
/* Both 'filters' and 'onceregistry' can be set in warnings.py;
get_warnings_attr() will reset these variables accordingly. */
PyObject *filters; /* List */
PyObject *once_registry; /* Dict */
PyObject *default_action; /* String */
_PyRecursiveMutex lock;
long filters_version;
};
struct _Py_mem_interp_free_queue {
int has_work; // true if the queue is not empty
PyMutex mutex; // protects the queue
struct llist_node head; // queue of _mem_work_chunk items
};
/****** Unicode state *********/
typedef enum {
_Py_ERROR_UNKNOWN=0,
_Py_ERROR_STRICT,
_Py_ERROR_SURROGATEESCAPE,
_Py_ERROR_REPLACE,
_Py_ERROR_IGNORE,
_Py_ERROR_BACKSLASHREPLACE,
_Py_ERROR_SURROGATEPASS,
_Py_ERROR_XMLCHARREFREPLACE,
_Py_ERROR_OTHER
} _Py_error_handler;
struct _Py_unicode_runtime_ids {
PyMutex mutex;
// next_index value must be preserved when Py_Initialize()/Py_Finalize()
// is called multiple times: see _PyUnicode_FromId() implementation.
Py_ssize_t next_index;
};
struct _Py_unicode_runtime_state {
struct _Py_unicode_runtime_ids ids;
};
/* fs_codec.encoding is initialized to NULL.
Later, it is set to a non-NULL string by _PyUnicode_InitEncodings(). */
struct _Py_unicode_fs_codec {
char *encoding; // Filesystem encoding (encoded to UTF-8)
int utf8; // encoding=="utf-8"?
char *errors; // Filesystem errors (encoded to UTF-8)
_Py_error_handler error_handler;
};
struct _Py_unicode_ids {
Py_ssize_t size;
PyObject **array;
};
#include "pycore_ucnhash.h"
struct _Py_unicode_state {
struct _Py_unicode_fs_codec fs_codec;
_PyUnicode_Name_CAPI *ucnhash_capi;
// Unicode identifiers (_Py_Identifier): see _PyUnicode_FromId()
struct _Py_unicode_ids ids;
};
// Borrowed references to common callables:
struct callable_cache {
PyObject *isinstance;
PyObject *len;
PyObject *list_append;
PyObject *object__getattribute__;
};
#include "pycore_obmalloc.h"
/* Length of array of slotdef pointers used to store slots with the
same __name__. There should be at most MAX_EQUIV-1 slotdef entries with
the same __name__, for any __name__. Since that's a static property, it is
appropriate to declare fixed-size arrays for this. */
#define MAX_EQUIV 10
typedef struct wrapperbase pytype_slotdef;
struct _Py_interp_cached_objects {
#ifdef Py_GIL_DISABLED
PyMutex interned_mutex;
#endif
PyObject *interned_strings;
/* object.__reduce__ */
PyObject *objreduce;
PyObject *type_slots_pname;
pytype_slotdef *type_slots_ptrs[MAX_EQUIV];
/* TypeVar and related types */
PyTypeObject *generic_type;
PyTypeObject *typevar_type;
PyTypeObject *typevartuple_type;
PyTypeObject *paramspec_type;
PyTypeObject *paramspecargs_type;
PyTypeObject *paramspeckwargs_type;
PyTypeObject *constevaluator_type;
};
struct _Py_interp_static_objects {
struct {
int _not_used;
// hamt_empty is here instead of global because of its weakreflist.
_PyGC_Head_UNUSED _hamt_empty_gc_not_used;
PyHamtObject hamt_empty;
PyBaseExceptionObject last_resort_memory_error;
} singletons;
};
#include "pycore_instruments.h"
#ifdef Py_GIL_DISABLED
// A min-heap of indices
typedef struct _PyIndexHeap {
int32_t *values;
// Number of items stored in values
Py_ssize_t size;
// Maximum number of items that can be stored in values
Py_ssize_t capacity;
} _PyIndexHeap;
// An unbounded pool of indices. Indices are allocated starting from 0. They
// may be released back to the pool once they are no longer in use.
typedef struct _PyIndexPool {
PyMutex mutex;
// Min heap of indices available for allocation
_PyIndexHeap free_indices;
// Next index to allocate if no free indices are available
int32_t next_index;
} _PyIndexPool;
typedef union _Py_unique_id_entry {
// Points to the next free type id, when part of the freelist
union _Py_unique_id_entry *next;
// Stores the object when the id is assigned
PyObject *obj;
} _Py_unique_id_entry;
struct _Py_unique_id_pool {
PyMutex mutex;
// combined table of object with allocated unique ids and unallocated ids.
_Py_unique_id_entry *table;
// Next entry to allocate inside 'table' or NULL
_Py_unique_id_entry *freelist;
// size of 'table'
Py_ssize_t size;
};
#endif
/* PyInterpreterState holds the global state for one of the runtime's
interpreters. Typically the initial (main) interpreter is the only one.
The PyInterpreterState typedef is in Include/pytypedefs.h.
*/
struct _is {
/* This struct contains the eval_breaker,
* which is by far the hottest field in this struct
* and should be placed at the beginning. */
struct _ceval_state ceval;
PyInterpreterState *next;
int64_t id;
Py_ssize_t id_refcount;
int requires_idref;
long _whence;
/* Has been initialized to a safe state.
In order to be effective, this must be set to 0 during or right
after allocation. */
int _initialized;
/* Has been fully initialized via pylifecycle.c. */
int _ready;
int finalizing;
uintptr_t last_restart_version;
struct pythreads {
uint64_t next_unique_id;
/* The linked list of threads, newest first. */
PyThreadState *head;
_PyThreadStateImpl *preallocated;
/* The thread currently executing in the __main__ module, if any. */
PyThreadState *main;
/* Used in Modules/_threadmodule.c. */
Py_ssize_t count;
/* Support for runtime thread stack size tuning.
A value of 0 means using the platform's default stack size
or the size specified by the THREAD_STACK_SIZE macro. */
/* Used in Python/thread.c. */
size_t stacksize;
} threads;
/* Reference to the _PyRuntime global variable. This field exists
to not have to pass runtime in addition to tstate to a function.
Get runtime from tstate: tstate->interp->runtime. */
struct pyruntimestate *runtime;
/* Set by Py_EndInterpreter().
Use _PyInterpreterState_GetFinalizing()
and _PyInterpreterState_SetFinalizing()
to access it, don't access it directly. */
PyThreadState* _finalizing;
/* The ID of the OS thread in which we are finalizing. */
unsigned long _finalizing_id;
struct _gc_runtime_state gc;
/* The following fields are here to avoid allocation during init.
The data is exposed through PyInterpreterState pointer fields.
These fields should not be accessed directly outside of init.
All other PyInterpreterState pointer fields are populated when
needed and default to NULL.
For now there are some exceptions to that rule, which require
allocation during init. These will be addressed on a case-by-case
basis. Also see _PyRuntimeState regarding the various mutex fields.
*/
// Dictionary of the sys module
PyObject *sysdict;
// Dictionary of the builtins module
PyObject *builtins;
struct _import_state imports;
/* The per-interpreter GIL, which might not be used. */
struct _gil_runtime_state _gil;
/* ---------- IMPORTANT ---------------------------
The fields above this line are declared as early as
possible to facilitate out-of-process observability
tools. */
struct codecs_state codecs;
PyConfig config;
unsigned long feature_flags;
PyObject *dict; /* Stores per-interpreter state */
PyObject *sysdict_copy;
PyObject *builtins_copy;
// Initialized to _PyEval_EvalFrameDefault().
_PyFrameEvalFunction eval_frame;
PyFunction_WatchCallback func_watchers[FUNC_MAX_WATCHERS];
// One bit is set for each non-NULL entry in func_watchers
uint8_t active_func_watchers;
Py_ssize_t co_extra_user_count;
freefunc co_extra_freefuncs[MAX_CO_EXTRA_USERS];
/* cross-interpreter data and utils */
_PyXI_state_t xi;
#ifdef HAVE_FORK
PyObject *before_forkers;
PyObject *after_forkers_parent;
PyObject *after_forkers_child;
#endif
struct _warnings_runtime_state warnings;
struct atexit_state atexit;
struct _stoptheworld_state stoptheworld;
struct _qsbr_shared qsbr;
#if defined(Py_GIL_DISABLED)
struct _mimalloc_interp_state mimalloc;
struct _brc_state brc; // biased reference counting state
struct _Py_unique_id_pool unique_ids; // object ids for per-thread refcounts
PyMutex weakref_locks[NUM_WEAKREF_LIST_LOCKS];
_PyIndexPool tlbc_indices;
#endif
// Per-interpreter list of tasks, any lingering tasks from thread
// states gets added here and removed from the corresponding
// thread state's list.
struct llist_node asyncio_tasks_head;
// `asyncio_tasks_lock` is used when tasks are moved
// from thread's list to interpreter's list.
PyMutex asyncio_tasks_lock;
// Per-interpreter state for the obmalloc allocator. For the main
// interpreter and for all interpreters that don't have their
// own obmalloc state, this points to the static structure in
// obmalloc.c obmalloc_state_main. For other interpreters, it is
// heap allocated by _PyMem_init_obmalloc() and freed when the
// interpreter structure is freed. In the case of a heap allocated
// obmalloc state, it is not safe to hold on to or use memory after
// the interpreter is freed. The obmalloc state corresponding to
// that allocated memory is gone. See free_obmalloc_arenas() for
// more comments.
struct _obmalloc_state *obmalloc;
PyObject *audit_hooks;
PyType_WatchCallback type_watchers[TYPE_MAX_WATCHERS];
PyCode_WatchCallback code_watchers[CODE_MAX_WATCHERS];
PyContext_WatchCallback context_watchers[CONTEXT_MAX_WATCHERS];
// One bit is set for each non-NULL entry in code_watchers
uint8_t active_code_watchers;
uint8_t active_context_watchers;
struct _py_object_state object_state;
struct _Py_unicode_state unicode;
struct _Py_long_state long_state;
struct _dtoa_state dtoa;
struct _py_func_state func_state;
struct _py_code_state code_state;
struct _Py_dict_state dict_state;
struct _Py_exc_state exc_state;
struct _Py_mem_interp_free_queue mem_free_queue;
struct ast_state ast;
struct types_state types;
struct callable_cache callable_cache;
bool jit;
struct _PyExecutorObject *executor_list_head;
size_t trace_run_counter;
_rare_events rare_events;
PyDict_WatchCallback builtins_dict_watcher;
_Py_GlobalMonitors monitors;
bool sys_profile_initialized;
bool sys_trace_initialized;
Py_ssize_t sys_profiling_threads; /* Count of threads with c_profilefunc set */
Py_ssize_t sys_tracing_threads; /* Count of threads with c_tracefunc set */
PyObject *monitoring_callables[PY_MONITORING_TOOL_IDS][_PY_MONITORING_EVENTS];
PyObject *monitoring_tool_names[PY_MONITORING_TOOL_IDS];
uintptr_t monitoring_tool_versions[PY_MONITORING_TOOL_IDS];
struct _Py_interp_cached_objects cached_objects;
struct _Py_interp_static_objects static_objects;
Py_ssize_t _interactive_src_count;
/* the initial PyInterpreterState.threads.head */
_PyThreadStateImpl _initial_thread;
// _initial_thread should be the last field of PyInterpreterState.
// See https://github.com/python/cpython/issues/127117.
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
uint64_t next_stackref;
_Py_hashtable_t *open_stackrefs_table;
# ifdef Py_STACKREF_CLOSE_DEBUG
_Py_hashtable_t *closed_stackrefs_table;
# endif
#endif
};
#ifdef __cplusplus
}
#endif
#endif /* Py_INTERNAL_INTERP_STRUCTS_H */

3
Include/internal/pycore_long.h
View file

@ -9,7 +9,8 @@ extern "C" {
#endif
#include "pycore_bytesobject.h" // _PyBytesWriter
#include "pycore_global_objects.h"// _PY_NSMALLNEGINTS
#include "pycore_runtime_structs.h"// _PY_NSMALLNEGINTS
#include "pycore_global_objects.h"// _PY_SINGLETON
#include "pycore_runtime.h" // _PyRuntime
/*

17
Include/internal/pycore_parser.h
View file

@ -13,23 +13,6 @@ extern "C" {
#include "pycore_global_strings.h" // _Py_DECLARE_STR()
#include "pycore_pyarena.h" // PyArena
#ifdef Py_DEBUG
#define _PYPEGEN_NSTATISTICS 2000
#endif
struct _parser_runtime_state {
#ifdef Py_DEBUG
long memo_statistics[_PYPEGEN_NSTATISTICS];
#ifdef Py_GIL_DISABLED
PyMutex mutex;
#endif
#else
int _not_used;
#endif
struct _expr dummy_name;
};
_Py_DECLARE_STR(empty, "")
#if defined(Py_DEBUG) && defined(Py_GIL_DISABLED)
#define _parser_runtime_state_INIT \

13
Include/internal/pycore_pyhash.h
View file

@ -71,19 +71,6 @@ extern int _Py_HashSecret_Initialized;
#endif
struct pyhash_runtime_state {
struct {
#ifndef MS_WINDOWS
int fd;
dev_t st_dev;
ino_t st_ino;
#else
// This is a placeholder so the struct isn't empty on Windows.
int _not_used;
#endif
} urandom_cache;
};
#ifndef MS_WINDOWS
# define _py_urandom_cache_INIT \
{ \

28
Include/internal/pycore_pymem.h
View file

@ -27,34 +27,6 @@ PyAPI_FUNC(char*) _PyMem_Strdup(const char *str);
// wcsdup() using PyMem_RawMalloc()
extern wchar_t* _PyMem_RawWcsdup(const wchar_t *str);
typedef struct {
/* We tag each block with an API ID in order to tag API violations */
char api_id;
PyMemAllocatorEx alloc;
} debug_alloc_api_t;
struct _pymem_allocators {
PyMutex mutex;
struct {
PyMemAllocatorEx raw;
PyMemAllocatorEx mem;
PyMemAllocatorEx obj;
} standard;
struct {
debug_alloc_api_t raw;
debug_alloc_api_t mem;
debug_alloc_api_t obj;
} debug;
int is_debug_enabled;
PyObjectArenaAllocator obj_arena;
};
struct _Py_mem_interp_free_queue {
int has_work; // true if the queue is not empty
PyMutex mutex; // protects the queue
struct llist_node head; // queue of _mem_work_chunk items
};
/* Special bytes broadcast into debug memory blocks at appropriate times.
Strings of these are unlikely to be valid addresses, floats, ints or
7-bit ASCII.

4
Include/internal/pycore_pystate.h
View file

@ -8,8 +8,10 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_runtime.h" // _PyRuntime
#include "pycore_runtime_structs.h" // _PyRuntime
#include "pycore_runtime.h" // _PyRuntimeState_GetFinalizing
#include "pycore_tstate.h" // _PyThreadStateImpl
#include "pycore_interp.h" // _PyInterpreterState_GetConfig
// Values for PyThreadState.state. A thread must be in the "attached" state
// before calling most Python APIs. If the GIL is enabled, then "attached"

196
Include/internal/pycore_runtime.h
View file

@ -8,201 +8,9 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_atexit.h" // struct _atexit_runtime_state
#include "pycore_audit.h" // _Py_AuditHookEntry
#include "pycore_ceval_state.h" // struct _ceval_runtime_state
#include "pycore_crossinterp.h" // _PyXI_global_state_t
#include "pycore_debug_offsets.h" // _Py_DebugOffsets
#include "pycore_faulthandler.h" // struct _faulthandler_runtime_state
#include "pycore_floatobject.h" // struct _Py_float_runtime_state
#include "pycore_import.h" // struct _import_runtime_state
#include "pycore_interp.h" // PyInterpreterState
#include "pycore_object_state.h" // struct _py_object_runtime_state
#include "pycore_parser.h" // struct _parser_runtime_state
#include "pycore_pyhash.h" // struct pyhash_runtime_state
#include "pycore_pymem.h" // struct _pymem_allocators
#include "pycore_pythread.h" // struct _pythread_runtime_state
#include "pycore_signal.h" // struct _signals_runtime_state
#include "pycore_time.h" // struct _PyTime_runtime_state
#include "pycore_tracemalloc.h" // struct _tracemalloc_runtime_state
#include "pycore_typeobject.h" // struct _types_runtime_state
#include "pycore_unicodeobject.h" // struct _Py_unicode_runtime_state
#include "pycore_runtime_structs.h"
/* Full Python runtime state */
/* _PyRuntimeState holds the global state for the CPython runtime.
That data is exported by the internal API as a global variable
(_PyRuntime, defined near the top of pylifecycle.c).
*/
typedef struct pyruntimestate {
/* This field must be first to facilitate locating it by out of process
* debuggers. Out of process debuggers will use the offsets contained in this
* field to be able to locate other fields in several interpreter structures
* in a way that doesn't require them to know the exact layout of those
* structures.
*
* IMPORTANT:
* This struct is **NOT** backwards compatible between minor version of the
* interpreter and the members, order of members and size can change between
* minor versions. This struct is only guaranteed to be stable between patch
* versions for a given minor version of the interpreter.
*/
_Py_DebugOffsets debug_offsets;
/* Has been initialized to a safe state.
In order to be effective, this must be set to 0 during or right
after allocation. */
int _initialized;
/* Is running Py_PreInitialize()? */
int preinitializing;
/* Is Python preinitialized? Set to 1 by Py_PreInitialize() */
int preinitialized;
/* Is Python core initialized? Set to 1 by _Py_InitializeCore() */
int core_initialized;
/* Is Python fully initialized? Set to 1 by Py_Initialize() */
int initialized;
/* Set by Py_FinalizeEx(). Only reset to NULL if Py_Initialize()
is called again.
Use _PyRuntimeState_GetFinalizing() and _PyRuntimeState_SetFinalizing()
to access it, don't access it directly. */
PyThreadState *_finalizing;
/* The ID of the OS thread in which we are finalizing. */
unsigned long _finalizing_id;
struct pyinterpreters {
PyMutex mutex;
/* The linked list of interpreters, newest first. */
PyInterpreterState *head;
/* The runtime's initial interpreter, which has a special role
in the operation of the runtime. It is also often the only
interpreter. */
PyInterpreterState *main;
/* next_id is an auto-numbered sequence of small
integers. It gets initialized in _PyInterpreterState_Enable(),
which is called in Py_Initialize(), and used in
PyInterpreterState_New(). A negative interpreter ID
indicates an error occurred. The main interpreter will
always have an ID of 0. Overflow results in a RuntimeError.
If that becomes a problem later then we can adjust, e.g. by
using a Python int. */
int64_t next_id;
} interpreters;
/* Platform-specific identifier and PyThreadState, respectively, for the
main thread in the main interpreter. */
unsigned long main_thread;
PyThreadState *main_tstate;
/* ---------- IMPORTANT ---------------------------
The fields above this line are declared as early as
possible to facilitate out-of-process observability
tools. */
/* cross-interpreter data and utils */
_PyXI_global_state_t xi;
struct _pymem_allocators allocators;
struct _obmalloc_global_state obmalloc;
struct pyhash_runtime_state pyhash_state;
struct _pythread_runtime_state threads;
struct _signals_runtime_state signals;
/* Used for the thread state bound to the current thread. */
Py_tss_t autoTSSkey;
/* Used instead of PyThreadState.trash when there is not current tstate. */
Py_tss_t trashTSSkey;
PyWideStringList orig_argv;
struct _parser_runtime_state parser;
struct _atexit_runtime_state atexit;
struct _import_runtime_state imports;
struct _ceval_runtime_state ceval;
struct _gilstate_runtime_state {
/* bpo-26558: Flag to disable PyGILState_Check().
If set to non-zero, PyGILState_Check() always return 1. */
int check_enabled;
/* The single PyInterpreterState used by this process'
GILState implementation
*/
/* TODO: Given interp_main, it may be possible to kill this ref */
PyInterpreterState *autoInterpreterState;
} gilstate;
struct _getargs_runtime_state {
struct _PyArg_Parser *static_parsers;
} getargs;
struct _fileutils_state fileutils;
struct _faulthandler_runtime_state faulthandler;
struct _tracemalloc_runtime_state tracemalloc;
struct _reftracer_runtime_state ref_tracer;
// The rwmutex is used to prevent overlapping global and per-interpreter
// stop-the-world events. Global stop-the-world events lock the mutex
// exclusively (as a "writer"), while per-interpreter stop-the-world events
// lock it non-exclusively (as "readers").
_PyRWMutex stoptheworld_mutex;
struct _stoptheworld_state stoptheworld;
PyPreConfig preconfig;
// Audit values must be preserved when Py_Initialize()/Py_Finalize()
// is called multiple times.
Py_OpenCodeHookFunction open_code_hook;
void *open_code_userdata;
struct {
PyMutex mutex;
_Py_AuditHookEntry *head;
} audit_hooks;
struct _py_object_runtime_state object_state;
struct _Py_float_runtime_state float_state;
struct _Py_unicode_runtime_state unicode_state;
struct _types_runtime_state types;
struct _Py_time_runtime_state time;
#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
// Used in "Python/emscripten_trampoline.c" to choose between type
// reflection trampoline and EM_JS trampoline.
int (*emscripten_count_args_function)(PyCFunctionWithKeywords func);
#endif
/* All the objects that are shared by the runtime's interpreters. */
struct _Py_cached_objects cached_objects;
struct _Py_static_objects static_objects;
/* The following fields are here to avoid allocation during init.
The data is exposed through _PyRuntimeState pointer fields.
These fields should not be accessed directly outside of init.
All other _PyRuntimeState pointer fields are populated when
needed and default to NULL.
For now there are some exceptions to that rule, which require
allocation during init. These will be addressed on a case-by-case
basis. Most notably, we don't pre-allocated the several mutex
(PyThread_type_lock) fields, because on Windows we only ever get
a pointer type.
*/
/* _PyRuntimeState.interpreters.main */
PyInterpreterState _main_interpreter;
// _main_interpreter should be the last field of _PyRuntimeState.
// See https://github.com/python/cpython/issues/127117.
} _PyRuntimeState;
/* other API */
/* API */
// Export _PyRuntime for shared extensions which use it in static inline
// functions for best performance, like _Py_IsMainThread() or _Py_ID().

2
Include/internal/pycore_runtime_init.h
View file

@ -8,11 +8,13 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_structs.h"
#include "pycore_ceval_state.h" // _PyEval_RUNTIME_PERF_INIT
#include "pycore_debug_offsets.h" // _Py_DebugOffsets_INIT()
#include "pycore_faulthandler.h" // _faulthandler_runtime_state_INIT
#include "pycore_floatobject.h" // _py_float_format_unknown
#include "pycore_function.h"
#include "pycore_hamt.h" // _PyHamt_BitmapNode_Type
#include "pycore_object.h" // _PyObject_HEAD_INIT
#include "pycore_obmalloc_init.h" // _obmalloc_global_state_INIT
#include "pycore_parser.h" // _parser_runtime_state_INIT

317
Include/internal/pycore_runtime_structs.h Normal file
View file

@ -0,0 +1,317 @@
#ifndef Py_INTERNAL_RUNTIME_STRUCTS_H
#define Py_INTERNAL_RUNTIME_STRUCTS_H
#ifdef __cplusplus
extern "C" {
#endif
/* This file contains the struct definitions for the runtime, interpreter
* and thread states, plus all smaller structs contained therein */
#include "pycore_structs.h"
#include "pycore_interp_structs.h"
/************ Runtime state ************/
typedef struct {
/* We tag each block with an API ID in order to tag API violations */
char api_id;
PyMemAllocatorEx alloc;
} debug_alloc_api_t;
struct _pymem_allocators {
PyMutex mutex;
struct {
PyMemAllocatorEx raw;
PyMemAllocatorEx mem;
PyMemAllocatorEx obj;
} standard;
struct {
debug_alloc_api_t raw;
debug_alloc_api_t mem;
debug_alloc_api_t obj;
} debug;
int is_debug_enabled;
PyObjectArenaAllocator obj_arena;
};
enum _py_float_format_type {
_py_float_format_unknown,
_py_float_format_ieee_big_endian,
_py_float_format_ieee_little_endian,
};
struct _Py_float_runtime_state {
enum _py_float_format_type float_format;
enum _py_float_format_type double_format;
};
struct pyhash_runtime_state {
struct {
#ifndef MS_WINDOWS
int fd;
dev_t st_dev;
ino_t st_ino;
#else
// This is a placeholder so the struct isn't empty on Windows.
int _not_used;
#endif
} urandom_cache;
};
#include "pycore_tracemalloc.h"
struct _fileutils_state {
int force_ascii;
};
#include "pycore_debug_offsets.h"
#include "pycore_signal.h"
#include "pycore_faulthandler.h"
#include "pycore_pythread.h"
#include "pycore_ast.h"
#ifdef Py_DEBUG
#define _PYPEGEN_NSTATISTICS 2000
#endif
struct _parser_runtime_state {
#ifdef Py_DEBUG
long memo_statistics[_PYPEGEN_NSTATISTICS];
#ifdef Py_GIL_DISABLED
PyMutex mutex;
#endif
#else
int _not_used;
#endif
struct _expr dummy_name;
};
typedef struct {
PyTime_t numer;
PyTime_t denom;
} _PyTimeFraction;
struct _Py_time_runtime_state {
#if defined(MS_WINDOWS) || defined(__APPLE__)
_PyTimeFraction base;
#else
char _unused;
#endif
};
struct _Py_cached_objects {
// XXX We could statically allocate the hashtable.
_Py_hashtable_t *interned_strings;
};
// These would be in pycore_long.h if it weren't for an include cycle.
#define _PY_NSMALLPOSINTS 257
#define _PY_NSMALLNEGINTS 5
#include "pycore_global_strings.h"
struct _Py_static_objects {
struct {
/* Small integers are preallocated in this array so that they
* can be shared.
* The integers that are preallocated are those in the range
* -_PY_NSMALLNEGINTS (inclusive) to _PY_NSMALLPOSINTS (exclusive).
*/
PyLongObject small_ints[_PY_NSMALLNEGINTS + _PY_NSMALLPOSINTS];
PyBytesObject bytes_empty;
struct {
PyBytesObject ob;
char eos;
} bytes_characters[256];
struct _Py_global_strings strings;
_PyGC_Head_UNUSED _tuple_empty_gc_not_used;
PyTupleObject tuple_empty;
_PyGC_Head_UNUSED _hamt_bitmap_node_empty_gc_not_used;
PyHamtNode_Bitmap hamt_bitmap_node_empty;
_PyContextTokenMissing context_token_missing;
} singletons;
};
/* Full Python runtime state */
/* _PyRuntimeState holds the global state for the CPython runtime.
That data is exported by the internal API as a global variable
(_PyRuntime, defined near the top of pylifecycle.c).
*/
typedef struct pyruntimestate {
/* This field must be first to facilitate locating it by out of process
* debuggers. Out of process debuggers will use the offsets contained in this
* field to be able to locate other fields in several interpreter structures
* in a way that doesn't require them to know the exact layout of those
* structures.
*
* IMPORTANT:
* This struct is **NOT** backwards compatible between minor version of the
* interpreter and the members, order of members and size can change between
* minor versions. This struct is only guaranteed to be stable between patch
* versions for a given minor version of the interpreter.
*/
_Py_DebugOffsets debug_offsets;
/* Has been initialized to a safe state.
In order to be effective, this must be set to 0 during or right
after allocation. */
int _initialized;
/* Is running Py_PreInitialize()? */
int preinitializing;
/* Is Python preinitialized? Set to 1 by Py_PreInitialize() */
int preinitialized;
/* Is Python core initialized? Set to 1 by _Py_InitializeCore() */
int core_initialized;
/* Is Python fully initialized? Set to 1 by Py_Initialize() */
int initialized;
/* Set by Py_FinalizeEx(). Only reset to NULL if Py_Initialize()
is called again.
Use _PyRuntimeState_GetFinalizing() and _PyRuntimeState_SetFinalizing()
to access it, don't access it directly. */
PyThreadState *_finalizing;
/* The ID of the OS thread in which we are finalizing. */
unsigned long _finalizing_id;
struct pyinterpreters {
PyMutex mutex;
/* The linked list of interpreters, newest first. */
PyInterpreterState *head;
/* The runtime's initial interpreter, which has a special role
in the operation of the runtime. It is also often the only
interpreter. */
PyInterpreterState *main;
/* next_id is an auto-numbered sequence of small
integers. It gets initialized in _PyInterpreterState_Enable(),
which is called in Py_Initialize(), and used in
PyInterpreterState_New(). A negative interpreter ID
indicates an error occurred. The main interpreter will
always have an ID of 0. Overflow results in a RuntimeError.
If that becomes a problem later then we can adjust, e.g. by
using a Python int. */
int64_t next_id;
} interpreters;
/* Platform-specific identifier and PyThreadState, respectively, for the
main thread in the main interpreter. */
unsigned long main_thread;
PyThreadState *main_tstate;
/* ---------- IMPORTANT ---------------------------
The fields above this line are declared as early as
possible to facilitate out-of-process observability
tools. */
/* cross-interpreter data and utils */
_PyXI_global_state_t xi;
struct _pymem_allocators allocators;
struct _obmalloc_global_state obmalloc;
struct pyhash_runtime_state pyhash_state;
struct _pythread_runtime_state threads;
struct _signals_runtime_state signals;
/* Used for the thread state bound to the current thread. */
Py_tss_t autoTSSkey;
/* Used instead of PyThreadState.trash when there is not current tstate. */
Py_tss_t trashTSSkey;
PyWideStringList orig_argv;
struct _parser_runtime_state parser;
struct _atexit_runtime_state atexit;
struct _import_runtime_state imports;
struct _ceval_runtime_state ceval;
struct _gilstate_runtime_state {
/* bpo-26558: Flag to disable PyGILState_Check().
If set to non-zero, PyGILState_Check() always return 1. */
int check_enabled;
/* The single PyInterpreterState used by this process'
GILState implementation
*/
/* TODO: Given interp_main, it may be possible to kill this ref */
PyInterpreterState *autoInterpreterState;
} gilstate;
struct _getargs_runtime_state {
struct _PyArg_Parser *static_parsers;
} getargs;
struct _fileutils_state fileutils;
struct _faulthandler_runtime_state faulthandler;
struct _tracemalloc_runtime_state tracemalloc;
struct _reftracer_runtime_state ref_tracer;
// The rwmutex is used to prevent overlapping global and per-interpreter
// stop-the-world events. Global stop-the-world events lock the mutex
// exclusively (as a "writer"), while per-interpreter stop-the-world events
// lock it non-exclusively (as "readers").
_PyRWMutex stoptheworld_mutex;
struct _stoptheworld_state stoptheworld;
PyPreConfig preconfig;
// Audit values must be preserved when Py_Initialize()/Py_Finalize()
// is called multiple times.
Py_OpenCodeHookFunction open_code_hook;
void *open_code_userdata;
struct {
PyMutex mutex;
struct _Py_AuditHookEntry *head;
} audit_hooks;
struct _py_object_runtime_state object_state;
struct _Py_float_runtime_state float_state;
struct _Py_unicode_runtime_state unicode_state;
struct _types_runtime_state types;
struct _Py_time_runtime_state time;
#if defined(__EMSCRIPTEN__) && defined(PY_CALL_TRAMPOLINE)
// Used in "Python/emscripten_trampoline.c" to choose between type
// reflection trampoline and EM_JS trampoline.
int (*emscripten_count_args_function)(PyCFunctionWithKeywords func);
#endif
/* All the objects that are shared by the runtime's interpreters. */
struct _Py_cached_objects cached_objects;
struct _Py_static_objects static_objects;
/* The following fields are here to avoid allocation during init.
The data is exposed through _PyRuntimeState pointer fields.
These fields should not be accessed directly outside of init.
All other _PyRuntimeState pointer fields are populated when
needed and default to NULL.
For now there are some exceptions to that rule, which require
allocation during init. These will be addressed on a case-by-case
basis. Most notably, we don't pre-allocated the several mutex
(PyThread_type_lock) fields, because on Windows we only ever get
a pointer type.
*/
/* _PyRuntimeState.interpreters.main */
PyInterpreterState _main_interpreter;
// _main_interpreter should be the last field of _PyRuntimeState.
// See https://github.com/python/cpython/issues/127117.
} _PyRuntimeState;
#ifdef __cplusplus
}
#endif
#endif /* Py_INTERNAL_RUNTIME_STRUCTS_H */

11
Include/internal/pycore_stackref.h
View file

@ -4,9 +4,6 @@
extern "C" {
#endif
// Define this to get precise tracking of stackrefs.
// #define Py_STACKREF_DEBUG 1
// Define this to get precise tracking of closed stackrefs.
// This will use unbounded memory, as it can only grow.
// Use this to track double closes in short-lived programs
@ -60,10 +57,6 @@ extern "C" {
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
typedef union _PyStackRef {
uint64_t index;
} _PyStackRef;
#define Py_TAG_BITS 0
PyAPI_FUNC(PyObject *) _Py_stackref_get_object(_PyStackRef ref);
@ -203,10 +196,6 @@ PyStackRef_IsHeapSafe(_PyStackRef ref)
#else
typedef union _PyStackRef {
uintptr_t bits;
} _PyStackRef;
#ifdef Py_GIL_DISABLED

74
Include/internal/pycore_structs.h Normal file
View file

@ -0,0 +1,74 @@
#ifndef Py_INTERNAL_STRUCTS_H
#define Py_INTERNAL_STRUCTS_H
#ifdef __cplusplus
extern "C" {
#endif
/* This files contains various key structs that are widely used
* and do not depend on other headers. */
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
typedef struct {
uint16_t value_and_backoff;
} _Py_BackoffCounter;
/* Each instruction in a code object is a fixed-width value,
* currently 2 bytes: 1-byte opcode + 1-byte oparg. The EXTENDED_ARG
* opcode allows for larger values but the current limit is 3 uses
* of EXTENDED_ARG (see Python/compile.c), for a maximum
* 32-bit value. This aligns with the note in Python/compile.c
* (compiler_addop_i_line) indicating that the max oparg value is
* 2**32 - 1, rather than INT_MAX.
*/
typedef union {
uint16_t cache;
struct {
uint8_t code;
uint8_t arg;
} op;
_Py_BackoffCounter counter; // First cache entry of specializable op
} _Py_CODEUNIT;
/* Abstract tree node. */
typedef struct {
PyObject_HEAD
} PyHamtNode;
/* An HAMT immutable mapping collection. */
typedef struct {
PyObject_HEAD
PyHamtNode *h_root;
PyObject *h_weakreflist;
Py_ssize_t h_count;
} PyHamtObject;
typedef struct {
PyObject_VAR_HEAD
uint32_t b_bitmap;
PyObject *b_array[1];
} PyHamtNode_Bitmap;
#include "pycore_context.h"
// Define this to get precise tracking of stackrefs.
// #define Py_STACKREF_DEBUG 1
typedef union _PyStackRef {
#if !defined(Py_GIL_DISABLED) && defined(Py_STACKREF_DEBUG)
uint64_t index;
#else
uintptr_t bits;
#endif
} _PyStackRef;
#ifdef __cplusplus
}
#endif
#endif /* Py_INTERNAL_STRUCTS_H */

17
Include/internal/pycore_time.h
View file

@ -57,6 +57,7 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_runtime_structs.h"
#ifdef __clang__
struct timeval;
@ -307,11 +308,6 @@ PyAPI_FUNC(PyTime_t) _PyDeadline_Get(PyTime_t deadline);
// --- _PyTimeFraction -------------------------------------------------------
typedef struct {
PyTime_t numer;
PyTime_t denom;
} _PyTimeFraction;
// Set a fraction.
// Return 0 on success.
// Return -1 if the fraction is invalid.
@ -330,17 +326,6 @@ extern PyTime_t _PyTimeFraction_Mul(
extern double _PyTimeFraction_Resolution(
const _PyTimeFraction *frac);
// --- _Py_time_runtime_state ------------------------------------------------
struct _Py_time_runtime_state {
#if defined(MS_WINDOWS) || defined(__APPLE__)
_PyTimeFraction base;
#else
char _unused;
#endif
};
extern PyStatus _PyTime_Init(struct _Py_time_runtime_state *state);
#ifdef __cplusplus

132
Include/internal/pycore_typeobject.h
View file

@ -10,6 +10,7 @@ extern "C" {
#include "pycore_moduleobject.h" // PyModuleObject
#include "pycore_lock.h" // PyMutex
#include "pycore_runtime_structs.h" // type state
/* state */
@ -32,126 +33,6 @@ extern "C" {
#define _Py_TYPE_BASE_VERSION_TAG (2<<16)
#define _Py_MAX_GLOBAL_TYPE_VERSION_TAG (_Py_TYPE_BASE_VERSION_TAG - 1)
/* For now we hard-code this to a value for which we are confident
all the static builtin types will fit (for all builds). */
#define _Py_MAX_MANAGED_STATIC_BUILTIN_TYPES 200
#define _Py_MAX_MANAGED_STATIC_EXT_TYPES 10
#define _Py_MAX_MANAGED_STATIC_TYPES \
(_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES + _Py_MAX_MANAGED_STATIC_EXT_TYPES)
struct _types_runtime_state {
/* Used to set PyTypeObject.tp_version_tag for core static types. */
// bpo-42745: next_version_tag remains shared by all interpreters
// because of static types.
unsigned int next_version_tag;
struct {
struct {
PyTypeObject *type;
int64_t interp_count;
} types[_Py_MAX_MANAGED_STATIC_TYPES];
} managed_static;
};
// Type attribute lookup cache: speed up attribute and method lookups,
// see _PyType_Lookup().
struct type_cache_entry {
unsigned int version; // initialized from type->tp_version_tag
#ifdef Py_GIL_DISABLED
_PySeqLock sequence;
#endif
PyObject *name; // reference to exactly a str or None
PyObject *value; // borrowed reference or NULL
};
#define MCACHE_SIZE_EXP 12
struct type_cache {
struct type_cache_entry hashtable[1 << MCACHE_SIZE_EXP];
};
typedef struct {
PyTypeObject *type;
int isbuiltin;
int readying;
int ready;
// XXX tp_dict can probably be statically allocated,
// instead of dynamically and stored on the interpreter.
PyObject *tp_dict;
PyObject *tp_subclasses;
/* We never clean up weakrefs for static builtin types since
they will effectively never get triggered. However, there
are also some diagnostic uses for the list of weakrefs,
so we still keep it. */
PyObject *tp_weaklist;
} managed_static_type_state;
#define TYPE_VERSION_CACHE_SIZE (1<<12) /* Must be a power of 2 */
struct types_state {
/* Used to set PyTypeObject.tp_version_tag.
It starts at _Py_MAX_GLOBAL_TYPE_VERSION_TAG + 1,
where all those lower numbers are used for core static types. */
unsigned int next_version_tag;
struct type_cache type_cache;
/* Every static builtin type is initialized for each interpreter
during its own initialization, including for the main interpreter
during global runtime initialization. This is done by calling
_PyStaticType_InitBuiltin().
The first time a static builtin type is initialized, all the
normal PyType_Ready() stuff happens. The only difference from
normal is that there are three PyTypeObject fields holding
objects which are stored here (on PyInterpreterState) rather
than in the corresponding PyTypeObject fields. Those are:
tp_dict (cls.__dict__), tp_subclasses (cls.__subclasses__),
and tp_weaklist.
When a subinterpreter is initialized, each static builtin type
is still initialized, but only the interpreter-specific portion,
namely those three objects.
Those objects are stored in the PyInterpreterState.types.builtins
array, at the index corresponding to each specific static builtin
type. That index (a size_t value) is stored in the tp_subclasses
field. For static builtin types, we re-purposed the now-unused
tp_subclasses to avoid adding another field to PyTypeObject.
In all other cases tp_subclasses holds a dict like before.
(The field was previously defined as PyObject*, but is now void*
to reflect its dual use.)
The index for each static builtin type isn't statically assigned.
Instead it is calculated the first time a type is initialized
(by the main interpreter). The index matches the order in which
the type was initialized relative to the others. The actual
value comes from the current value of num_builtins_initialized,
as each type is initialized for the main interpreter.
num_builtins_initialized is incremented once for each static
builtin type. Once initialization is over for a subinterpreter,
the value will be the same as for all other interpreters. */
struct {
size_t num_initialized;
managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_BUILTIN_TYPES];
} builtins;
/* We apply a similar strategy for managed extension modules. */
struct {
size_t num_initialized;
size_t next_index;
managed_static_type_state initialized[_Py_MAX_MANAGED_STATIC_EXT_TYPES];
} for_extensions;
PyMutex mutex;
// Borrowed references to type objects whose
// tp_version_tag % TYPE_VERSION_CACHE_SIZE
// once was equal to the index in the table.
// They are cleared when the type object is deallocated.
PyTypeObject *type_version_cache[TYPE_VERSION_CACHE_SIZE];
};
/* runtime lifecycle */
@ -161,17 +42,6 @@ extern void _PyTypes_FiniExtTypes(PyInterpreterState *interp);
extern void _PyTypes_Fini(PyInterpreterState *);
extern void _PyTypes_AfterFork(void);
/* other API */
/* Length of array of slotdef pointers used to store slots with the
same __name__. There should be at most MAX_EQUIV-1 slotdef entries with
the same __name__, for any __name__. Since that's a static property, it is
appropriate to declare fixed-size arrays for this. */
#define MAX_EQUIV 10
typedef struct wrapperbase pytype_slotdef;
static inline PyObject **
_PyStaticType_GET_WEAKREFS_LISTPTR(managed_static_type_state *state)
{

34
Include/internal/pycore_unicodeobject.h
View file

@ -287,40 +287,6 @@ extern void _PyUnicode_InternStatic(PyInterpreterState *interp, PyObject **);
/* --- Other API ---------------------------------------------------------- */
struct _Py_unicode_runtime_ids {
PyMutex mutex;
// next_index value must be preserved when Py_Initialize()/Py_Finalize()
// is called multiple times: see _PyUnicode_FromId() implementation.
Py_ssize_t next_index;
};
struct _Py_unicode_runtime_state {
struct _Py_unicode_runtime_ids ids;
};
/* fs_codec.encoding is initialized to NULL.
Later, it is set to a non-NULL string by _PyUnicode_InitEncodings(). */
struct _Py_unicode_fs_codec {
char *encoding; // Filesystem encoding (encoded to UTF-8)
int utf8; // encoding=="utf-8"?
char *errors; // Filesystem errors (encoded to UTF-8)
_Py_error_handler error_handler;
};
struct _Py_unicode_ids {
Py_ssize_t size;
PyObject **array;
};
struct _Py_unicode_state {
struct _Py_unicode_fs_codec fs_codec;
_PyUnicode_Name_CAPI *ucnhash_capi;
// Unicode identifiers (_Py_Identifier): see _PyUnicode_FromId()
struct _Py_unicode_ids ids;
};
extern void _PyUnicode_ClearInterned(PyInterpreterState *interp);
// Like PyUnicode_AsUTF8(), but check for embedded null characters.

20
Include/internal/pycore_uniqueid.h
View file

@ -24,26 +24,6 @@ extern "C" {
// Each entry implicitly represents a unique id based on its offset in the
// table. Non-allocated entries form a free-list via the 'next' pointer.
// Allocated entries store the corresponding PyObject.
typedef union _Py_unique_id_entry {
// Points to the next free type id, when part of the freelist
union _Py_unique_id_entry *next;
// Stores the object when the id is assigned
PyObject *obj;
} _Py_unique_id_entry;
struct _Py_unique_id_pool {
PyMutex mutex;
// combined table of object with allocated unique ids and unallocated ids.
_Py_unique_id_entry *table;
// Next entry to allocate inside 'table' or NULL
_Py_unique_id_entry *freelist;
// size of 'table'
Py_ssize_t size;
};
#define _Py_INVALID_UNIQUE_ID 0

10
Include/internal/pycore_warnings.h
View file

@ -8,16 +8,6 @@ extern "C" {
# error "this header requires Py_BUILD_CORE define"
#endif
struct _warnings_runtime_state {
/* Both 'filters' and 'onceregistry' can be set in warnings.py;
get_warnings_attr() will reset these variables accordingly. */
PyObject *filters; /* List */
PyObject *once_registry; /* Dict */
PyObject *default_action; /* String */
_PyRecursiveMutex lock;
long filters_version;
};
extern int _PyWarnings_InitState(PyInterpreterState *interp);
extern PyObject* _PyWarnings_Init(void);

3
Makefile.pre.in
View file

@ -1255,6 +1255,7 @@ PYTHON_HEADERS= \
$(srcdir)/Include/internal/pycore_instruments.h \
$(srcdir)/Include/internal/pycore_instruction_sequence.h \
$(srcdir)/Include/internal/pycore_interp.h \
$(srcdir)/Include/internal/pycore_interp_structs.h \
$(srcdir)/Include/internal/pycore_intrinsics.h \
$(srcdir)/Include/internal/pycore_jit.h \
$(srcdir)/Include/internal/pycore_list.h \
@ -1297,11 +1298,13 @@ PYTHON_HEADERS= \
$(srcdir)/Include/internal/pycore_runtime.h \
$(srcdir)/Include/internal/pycore_runtime_init.h \
$(srcdir)/Include/internal/pycore_runtime_init_generated.h \
$(srcdir)/Include/internal/pycore_runtime_structs.h \
$(srcdir)/Include/internal/pycore_semaphore.h \
$(srcdir)/Include/internal/pycore_setobject.h \
$(srcdir)/Include/internal/pycore_signal.h \
$(srcdir)/Include/internal/pycore_sliceobject.h \
$(srcdir)/Include/internal/pycore_strhex.h \
$(srcdir)/Include/internal/pycore_structs.h \
$(srcdir)/Include/internal/pycore_structseq.h \
$(srcdir)/Include/internal/pycore_symtable.h \
$(srcdir)/Include/internal/pycore_sysmodule.h \

1
Modules/_codecsmodule.c
View file

@ -32,6 +32,7 @@ Copyright (c) Corporation for National Research Initiatives.
#include "Python.h"
#include "pycore_codecs.h" // _PyCodec_Lookup()
#include "pycore_unicodeobject.h" // _PyUnicode_EncodeCharmap
#ifdef MS_WINDOWS
#include <windows.h>

1
Modules/_cursesmodule.c
View file

@ -109,6 +109,7 @@ static const char PyCursesVersion[] = "2.2";
#include "pycore_long.h" // _PyLong_GetZero()
#include "pycore_structseq.h" // _PyStructSequence_NewType()
#include "pycore_sysmodule.h" // _PySys_GetOptionalAttrString()
#include "pycore_fileutils.h" // _Py_set_inheritable
#ifdef __hpux
#define STRICT_SYSV_CURSES

1
Modules/_tkinter.c
View file

@ -32,6 +32,7 @@ Copyright (C) 1994 Steen Lumholt.
#include "pycore_long.h" // _PyLong_IsNegative()
#include "pycore_sysmodule.h" // _PySys_GetOptionalAttrString()
#include "pycore_unicodeobject.h" // _PyUnicode_AsUTF8String
#ifdef MS_WINDOWS
# include <windows.h>

2
Objects/genobject.c
View file

@ -3,6 +3,8 @@
#define _PY_INTERPRETER
#include "Python.h"
#include "pycore_genobject.h"
#include "pycore_call.h" // _PyObject_CallNoArgs()
#include "pycore_ceval.h" // _PyEval_EvalFrame()
#include "pycore_frame.h" // _PyInterpreterFrame

1
Objects/listobject.c
View file

@ -13,6 +13,7 @@
#include "pycore_modsupport.h" // _PyArg_NoKwnames()
#include "pycore_object.h" // _PyObject_GC_TRACK(), _PyDebugAllocatorStats()
#include "pycore_tuple.h" // _PyTuple_FromArray()
#include "pycore_typeobject.h" // _Py_TYPE_VERSION_LIST
#include "pycore_setobject.h" // _PySet_NextEntry()
#include <stddef.h>

1
Objects/object.c
View file

@ -14,6 +14,7 @@
#include "pycore_initconfig.h" // _PyStatus_EXCEPTION()
#include "pycore_instruction_sequence.h" // _PyInstructionSequence_Type
#include "pycore_hashtable.h" // _Py_hashtable_new()
#include "pycore_hamt.h" // _PyHamtItems_Type
#include "pycore_memoryobject.h" // _PyManagedBuffer_Type
#include "pycore_namespace.h" // _PyNamespace_Type
#include "pycore_object.h" // PyAPI_DATA() _Py_SwappedOp definition

1
Objects/unicodeobject.c
View file

@ -53,6 +53,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#include "pycore_object.h" // _PyObject_GC_TRACK(), _Py_FatalRefcountError()
#include "pycore_pathconfig.h" // _Py_DumpPathConfig()
#include "pycore_pyerrors.h" // _PyUnicodeTranslateError_Create()
#include "pycore_pyhash.h" // _Py_HashSecret_t
#include "pycore_pylifecycle.h" // _Py_SetFileSystemEncoding()
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_ucnhash.h" // _PyUnicode_Name_CAPI

3
Parser/pegen.c
View file

@ -1,7 +1,10 @@
#include <Python.h>
#include "pycore_ast.h" // _PyAST_Validate(),
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_parser.h" // _PYPEGEN_NSTATISTICS
#include "pycore_pyerrors.h" // PyExc_IncompleteInputError
#include "pycore_runtime.h" // _PyRuntime
#include "pycore_unicodeobject.h" // _PyUnicode_InternImmortal
#include <errcode.h>
#include "lexer/lexer.h"

1
Python/bootstrap_hash.c
View file

@ -1,6 +1,7 @@
#include "Python.h"
#include "pycore_fileutils.h" // _Py_fstat_noraise()
#include "pycore_initconfig.h"
#include "pycore_pyhash.h" // _Py_HashSecret_t
#include "pycore_pylifecycle.h" // _PyOS_URandomNonblock()
#include "pycore_runtime.h" // _PyRuntime

3
Python/dtoa.c
View file

@ -122,6 +122,7 @@
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include <stdlib.h> // exit()
/* if _PY_SHORT_FLOAT_REPR == 0, then don't even try to compile
the following code */
#if _PY_SHORT_FLOAT_REPR == 1
@ -157,7 +158,7 @@
#endif
// ULong is defined in pycore_dtoa.h.
typedef uint32_t ULong;
typedef int32_t Long;
typedef uint64_t ULLong;

1
Python/formatter_unicode.c
View file

@ -5,6 +5,7 @@
#include "Python.h"
#include "pycore_fileutils.h" // _Py_GetLocaleconvNumeric()
#include "pycore_long.h" // _PyLong_FormatWriter()
#include "pycore_unicodeobject.h" // PyUnicode_MAX_CHAR_VALUE()
#include <locale.h>
/* Raises an exception about an unknown presentation type for this

1
Python/initconfig.c
View file

@ -8,6 +8,7 @@
#include "pycore_pyerrors.h" // _PyErr_GetRaisedException()
#include "pycore_pylifecycle.h" // _Py_PreInitializeFromConfig()
#include "pycore_pymem.h" // _PyMem_DefaultRawMalloc()
#include "pycore_pyhash.h" // _Py_HashSecret
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_pystats.h" // _Py_StatsOn()
#include "pycore_sysmodule.h" // _PySys_SetIntMaxStrDigits()

1
Python/instrumentation.c
View file

@ -18,6 +18,7 @@
#include "pycore_pyatomic_ft_wrappers.h" // FT_ATOMIC_STORE_UINTPTR_RELEASE
#include "pycore_pyerrors.h"
#include "pycore_pystate.h" // _PyInterpreterState_GET()
#include "pycore_runtime_structs.h" // _PyCoMonitoringData
/* Uncomment this to dump debugging output when assertions fail */
// #define INSTRUMENT_DEBUG 1

1
Python/interpconfig.c
View file

@ -1,6 +1,7 @@
/* PyInterpreterConfig API */
#include "Python.h"
#include "pycore_interp.h" // Py_RTFLAGS
#include "pycore_pylifecycle.h"
#include <stdbool.h>

3
Python/intrinsics.c
View file

@ -5,12 +5,15 @@
#include "pycore_frame.h"
#include "pycore_function.h"
#include "pycore_global_objects.h"
#include "pycore_genobject.h" // _PyAsyncGenValueWrapperNew
#include "pycore_compile.h" // _PyCompile_GetUnaryIntrinsicName, etc
#include "pycore_intrinsics.h" // INTRINSIC_PRINT
#include "pycore_pyerrors.h" // _PyErr_SetString()
#include "pycore_runtime.h" // _Py_ID()
#include "pycore_sysmodule.h" // _PySys_GetRequiredAttr()
#include "pycore_tuple.h" // _PyTuple_FromArray()
#include "pycore_typevarobject.h" // _Py_make_typevar()
#include "pycore_unicodeobject.h" // _PyUnicode_FromASCII
/******** Unary functions ********/

4
Python/pylifecycle.c
View file

@ -1,7 +1,8 @@
/* Python interpreter top-level routines, including init/exit */
#include "Python.h"
#include "pycore_runtime_structs.h"
#include "pycore_unicodeobject.h"
#include "pycore_audit.h" // _PySys_ClearAuditHooks()
#include "pycore_call.h" // _PyObject_CallMethod()
#include "pycore_ceval.h" // _PyEval_FiniGIL()
@ -13,6 +14,7 @@
#include "pycore_freelist.h" // _PyObject_ClearFreeLists()
#include "pycore_floatobject.h" // _PyFloat_InitTypes()
#include "pycore_global_objects_fini_generated.h" // "_PyStaticObjects_CheckRefcnt()
#include "pycore_hamt.h" // _PyHamt_Type
#include "pycore_import.h" // _PyImport_BootstrapImp()
#include "pycore_initconfig.h" // _PyStatus_OK()
#include "pycore_list.h" // _PyList_Fini()

3
Python/pystate.c
View file

@ -2,6 +2,8 @@
/* Thread and interpreter state structures and their interfaces */
#include "Python.h"
#include "pycore_runtime_structs.h"
#include "pycore_abstract.h" // _PyIndex_Check()
#include "pycore_audit.h" // _Py_AuditHookEntry
#include "pycore_ceval.h"
@ -18,6 +20,7 @@
#include "pycore_pylifecycle.h" // _PyAST_Fini()
#include "pycore_pymem.h" // _PyMem_DebugEnabled()
#include "pycore_pystate.h"
#include "pycore_runtime.h" // _PyRuntime
#include "pycore_runtime_init.h" // _PyRuntimeState_INIT
#include "pycore_stackref.h" // Py_STACKREF_DEBUG
#include "pycore_time.h" // _PyTime_Init()

1
Python/suggestions.c
View file

@ -3,6 +3,7 @@
#include "pycore_frame.h"
#include "pycore_pyerrors.h" // export _Py_UTF8_Edit_Cost()
#include "pycore_runtime.h" // _Py_ID()
#include "pycore_unicodeobject.h" // _PyUnicode_Equal()
#define MAX_CANDIDATE_ITEMS 750
#define MAX_STRING_SIZE 40

2
Tools/build/generate_global_objects.py
View file

@ -277,7 +277,7 @@ def generate_runtime_init(identifiers, strings):
# First get some info from the declarations.
nsmallposints = None
nsmallnegints = None
with open(os.path.join(INTERNAL, 'pycore_global_objects.h')) as infile:
with open(os.path.join(INTERNAL, 'pycore_runtime_structs.h')) as infile:
for line in infile:
if line.startswith('#define _PY_NSMALLPOSINTS'):
nsmallposints = int(line.split()[-1])