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#ifndef Py_INTERNAL_RUNTIME_H
#define Py_INTERNAL_RUNTIME_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_atomic.h" /* _Py_atomic_address */
#include "pycore_gil.h" // struct _gil_runtime_state
#include "pycore_global_objects.h" // struct _Py_global_objects
#include "pycore_unicodeobject.h" // struct _Py_unicode_runtime_ids
/* ceval state */
struct _ceval_runtime_state {
/* Request for checking signals. It is shared by all interpreters (see
bpo-40513). Any thread of any interpreter can receive a signal, but only
the main thread of the main interpreter can handle signals: see
_Py_ThreadCanHandleSignals(). */
_Py_atomic_int signals_pending;
#ifndef EXPERIMENTAL_ISOLATED_SUBINTERPRETERS
struct _gil_runtime_state gil;
#endif
};
/* GIL state */
struct _gilstate_runtime_state {
/* bpo-26558: Flag to disable PyGILState_Check().
If set to non-zero, PyGILState_Check() always return 1. */
int check_enabled;
/* Assuming the current thread holds the GIL, this is the
PyThreadState for the current thread. */
_Py_atomic_address tstate_current;
/* The single PyInterpreterState used by this process'
GILState implementation
*/
/* TODO: Given interp_main, it may be possible to kill this ref */
PyInterpreterState *autoInterpreterState;
Py_tss_t autoTSSkey;
};
/* Runtime audit hook state */
typedef struct _Py_AuditHookEntry {
struct _Py_AuditHookEntry *next;
Py_AuditHookFunction hookCFunction;
void *userData;
} _Py_AuditHookEntry;
/* Full Python runtime state */
typedef struct pyruntimestate {
/* 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. */
_Py_atomic_address _finalizing;
struct pyinterpreters {
PyThread_type_lock mutex;
PyInterpreterState *head;
PyInterpreterState *main;
/* _next_interp_id is an auto-numbered sequence of small
integers. It gets initialized in _PyInterpreterState_Init(),
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;
// XXX Remove this field once we have a tp_* slot.
struct _xidregistry {
PyThread_type_lock mutex;
struct _xidregitem *head;
} xidregistry;
unsigned long main_thread;
#define NEXITFUNCS 32
void (*exitfuncs[NEXITFUNCS])(void);
int nexitfuncs;
struct _ceval_runtime_state ceval;
struct _gilstate_runtime_state gilstate;
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;
_Py_AuditHookEntry *audit_hook_head;
struct _Py_unicode_runtime_ids unicode_ids;
struct _Py_global_objects global_objects;
// If anything gets added after global_objects then
// _PyRuntimeState_reset() needs to get updated to clear it.
} _PyRuntimeState;
#define _PyRuntimeState_INIT \
{ \
.global_objects = _Py_global_objects_INIT, \
}
/* Note: _PyRuntimeState_INIT sets other fields to 0/NULL */
static inline void
_PyRuntimeState_reset(_PyRuntimeState *runtime)
{
/* Make it match _PyRuntimeState_INIT. */
memset(runtime, 0, (size_t)&runtime->global_objects - (size_t)runtime);
_Py_global_objects_reset(&runtime->global_objects);
}
PyAPI_DATA(_PyRuntimeState) _PyRuntime;
PyAPI_FUNC(PyStatus) _PyRuntimeState_Init(_PyRuntimeState *runtime);
PyAPI_FUNC(void) _PyRuntimeState_Fini(_PyRuntimeState *runtime);
#ifdef HAVE_FORK
extern PyStatus _PyRuntimeState_ReInitThreads(_PyRuntimeState *runtime);
#endif
/* Initialize _PyRuntimeState.
Return NULL on success, or return an error message on failure. */
PyAPI_FUNC(PyStatus) _PyRuntime_Initialize(void);
PyAPI_FUNC(void) _PyRuntime_Finalize(void);
static inline PyThreadState*
_PyRuntimeState_GetFinalizing(_PyRuntimeState *runtime) {
return (PyThreadState*)_Py_atomic_load_relaxed(&runtime->_finalizing);
}
static inline void
_PyRuntimeState_SetFinalizing(_PyRuntimeState *runtime, PyThreadState *tstate) {
_Py_atomic_store_relaxed(&runtime->_finalizing, (uintptr_t)tstate);
}
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_RUNTIME_H */
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