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Editing: pycore_runtime.h
#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_interp.h" // PyInterpreterState #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; struct _gil_runtime_state gil; }; /* 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 */ /* _PyRuntimeState holds the global state for the CPython runtime. That data is exposed in the internal API as a static variable (_PyRuntime). */ 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; /* 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_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; /* All the objects that are shared by the runtime's interpreters. */ struct _Py_global_objects global_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. */ /* PyInterpreterState.interpreters.main */ PyInterpreterState _main_interpreter; } _PyRuntimeState; /* other API */ 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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