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#ifndef Py_INTERNAL_PYSTATE_H #define Py_INTERNAL_PYSTATE_H #ifdef __cplusplus extern "C" { #endif #ifndef Py_BUILD_CORE # error "this header requires Py_BUILD_CORE define" #endif #include "pycore_runtime.h" /* PyRuntimeState */ /* Check if the current thread is the main thread. Use _Py_IsMainInterpreter() to check if it's the main interpreter. */ static inline int _Py_IsMainThread(void) { unsigned long thread = PyThread_get_thread_ident(); return (thread == _PyRuntime.main_thread); } static inline PyInterpreterState * _PyInterpreterState_Main(void) { return _PyRuntime.interpreters.main; } static inline int _Py_IsMainInterpreter(PyInterpreterState *interp) { return (interp == _PyInterpreterState_Main()); } static inline int _Py_IsMainInterpreterFinalizing(PyInterpreterState *interp) { /* bpo-39877: Access _PyRuntime directly rather than using tstate->interp->runtime to support calls from Python daemon threads. After Py_Finalize() has been called, tstate can be a dangling pointer: point to PyThreadState freed memory. */ return (_PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL && interp == &_PyRuntime._main_interpreter); } // Export for _xxsubinterpreters module. PyAPI_FUNC(int) _PyInterpreterState_SetRunningMain(PyInterpreterState *); PyAPI_FUNC(void) _PyInterpreterState_SetNotRunningMain(PyInterpreterState *); PyAPI_FUNC(int) _PyInterpreterState_IsRunningMain(PyInterpreterState *); static inline const PyConfig * _Py_GetMainConfig(void) { PyInterpreterState *interp = _PyInterpreterState_Main(); if (interp == NULL) { return NULL; } return _PyInterpreterState_GetConfig(interp); } /* Only handle signals on the main thread of the main interpreter. */ static inline int _Py_ThreadCanHandleSignals(PyInterpreterState *interp) { return (_Py_IsMainThread() && _Py_IsMainInterpreter(interp)); } /* Variable and static inline functions for in-line access to current thread and interpreter state */ #if defined(HAVE_THREAD_LOCAL) && !defined(Py_BUILD_CORE_MODULE) extern _Py_thread_local PyThreadState *_Py_tss_tstate; #endif PyAPI_DATA(PyThreadState *) _PyThreadState_GetCurrent(void); #ifndef NDEBUG extern int _PyThreadState_CheckConsistency(PyThreadState *tstate); #endif extern int _PyThreadState_MustExit(PyThreadState *tstate); /* Get the current Python thread state. This function is unsafe: it does not check for error and it can return NULL. The caller must hold the GIL. See also PyThreadState_Get() and _PyThreadState_UncheckedGet(). */ static inline PyThreadState* _PyThreadState_GET(void) { #if defined(HAVE_THREAD_LOCAL) && !defined(Py_BUILD_CORE_MODULE) return _Py_tss_tstate; #else return _PyThreadState_GetCurrent(); #endif } static inline void _Py_EnsureFuncTstateNotNULL(const char *func, PyThreadState *tstate) { if (tstate == NULL) { _Py_FatalErrorFunc(func, "the function must be called with the GIL held, " "after Python initialization and before Python finalization, " "but the GIL is released (the current Python thread state is NULL)"); } } // Call Py_FatalError() if tstate is NULL #define _Py_EnsureTstateNotNULL(tstate) \ _Py_EnsureFuncTstateNotNULL(__func__, (tstate)) /* Get the current interpreter state. The function is unsafe: it does not check for error and it can return NULL. The caller must hold the GIL. See also _PyInterpreterState_Get() and _PyGILState_GetInterpreterStateUnsafe(). */ static inline PyInterpreterState* _PyInterpreterState_GET(void) { PyThreadState *tstate = _PyThreadState_GET(); #ifdef Py_DEBUG _Py_EnsureTstateNotNULL(tstate); #endif return tstate->interp; } // PyThreadState functions PyAPI_FUNC(PyThreadState *) _PyThreadState_New(PyInterpreterState *interp); PyAPI_FUNC(void) _PyThreadState_Bind(PyThreadState *tstate); // We keep this around exclusively for stable ABI compatibility. PyAPI_FUNC(void) _PyThreadState_Init( PyThreadState *tstate); PyAPI_FUNC(void) _PyThreadState_DeleteExcept(PyThreadState *tstate); /* Other */ PyAPI_FUNC(PyThreadState *) _PyThreadState_Swap( _PyRuntimeState *runtime, PyThreadState *newts); PyAPI_FUNC(PyStatus) _PyInterpreterState_Enable(_PyRuntimeState *runtime); #ifdef HAVE_FORK extern PyStatus _PyInterpreterState_DeleteExceptMain(_PyRuntimeState *runtime); extern void _PySignal_AfterFork(void); #endif PyAPI_FUNC(int) _PyCrossInterpreterData_ReleaseAndRawFree(_PyCrossInterpreterData *); PyAPI_FUNC(int) _PyState_AddModule( PyThreadState *tstate, PyObject* module, PyModuleDef* def); PyAPI_FUNC(int) _PyOS_InterruptOccurred(PyThreadState *tstate); #define HEAD_LOCK(runtime) \ PyThread_acquire_lock((runtime)->interpreters.mutex, WAIT_LOCK) #define HEAD_UNLOCK(runtime) \ PyThread_release_lock((runtime)->interpreters.mutex) #ifdef __cplusplus } #endif #endif /* !Py_INTERNAL_PYSTATE_H */
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