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# Thread and interpreter state structures and their interfaces
from .object cimport PyObject
cdef extern from "Python.h":
# We make these an opague types. If the user wants specific attributes,
# they can be declared manually.
ctypedef struct PyInterpreterState:
pass
ctypedef struct PyThreadState:
pass
ctypedef struct PyFrameObject:
pass
# This is not actually a struct, but make sure it can never be coerced to
# an int or used in arithmetic expressions
ctypedef struct PyGILState_STATE
# The type of the trace function registered using PyEval_SetProfile() and
# PyEval_SetTrace().
# Py_tracefunc return -1 when raising an exception, or 0 for success.
ctypedef int (*Py_tracefunc)(PyObject *, PyFrameObject *, int, PyObject *)
# The following values are used for 'what' for tracefunc functions
enum:
PyTrace_CALL
PyTrace_EXCEPTION
PyTrace_LINE
PyTrace_RETURN
PyTrace_C_CALL
PyTrace_C_EXCEPTION
PyTrace_C_RETURN
PyInterpreterState * PyInterpreterState_New()
void PyInterpreterState_Clear(PyInterpreterState *)
void PyInterpreterState_Delete(PyInterpreterState *)
PyThreadState * PyThreadState_New(PyInterpreterState *)
void PyThreadState_Clear(PyThreadState *)
void PyThreadState_Delete(PyThreadState *)
PyThreadState * PyThreadState_Get()
PyThreadState * PyThreadState_Swap(PyThreadState *)
PyObject * PyThreadState_GetDict()
int PyThreadState_SetAsyncExc(long, PyObject *)
# Ensure that the current thread is ready to call the Python
# C API, regardless of the current state of Python, or of its
# thread lock. This may be called as many times as desired
# by a thread so long as each call is matched with a call to
# PyGILState_Release(). In general, other thread-state APIs may
# be used between _Ensure() and _Release() calls, so long as the
# thread-state is restored to its previous state before the Release().
# For example, normal use of the Py_BEGIN_ALLOW_THREADS/
# Py_END_ALLOW_THREADS macros are acceptable.
# The return value is an opaque "handle" to the thread state when
# PyGILState_Ensure() was called, and must be passed to
# PyGILState_Release() to ensure Python is left in the same state. Even
# though recursive calls are allowed, these handles can *not* be shared -
# each unique call to PyGILState_Ensure must save the handle for its
# call to PyGILState_Release.
# When the function returns, the current thread will hold the GIL.
# Failure is a fatal error.
PyGILState_STATE PyGILState_Ensure()
# Release any resources previously acquired. After this call, Python's
# state will be the same as it was prior to the corresponding
# PyGILState_Ensure() call (but generally this state will be unknown to
# the caller, hence the use of the GILState API.)
# Every call to PyGILState_Ensure must be matched by a call to
# PyGILState_Release on the same thread.
void PyGILState_Release(PyGILState_STATE)
# Routines for advanced debuggers, requested by David Beazley.
# Don't use unless you know what you are doing!
PyInterpreterState * PyInterpreterState_Head()
PyInterpreterState * PyInterpreterState_Next(PyInterpreterState *)
PyThreadState * PyInterpreterState_ThreadHead(PyInterpreterState *)
PyThreadState * PyThreadState_Next(PyThreadState *)