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use swim_c_sys::{int, long};
use crate::moduleobject::PyModuleDef;
use crate::object::PyObject;

#[cfg(Py_3_6)]
pub const MAX_CO_EXTRA_USERS: int = 255;

pub enum PyInterpreterState {
    // Opaque.
}

pub enum PyThreadState {
    // Opaque.
}

extern "C" {
    pub fn PyInterpreterState_New() -> *mut PyInterpreterState;
    pub fn PyInterpreterState_Clear(arg1: *mut PyInterpreterState);
    pub fn PyInterpreterState_Delete(arg1: *mut PyInterpreterState);
    //fn _PyState_AddModule(arg1: *mut PyObject, arg2: *mut PyModuleDef) -> int;
    pub fn PyState_FindModule(arg1: *mut PyModuleDef) -> *mut PyObject;
    pub fn PyThreadState_New(arg1: *mut PyInterpreterState) -> *mut PyThreadState;
    //fn _PyThreadState_Prealloc(arg1: *mut PyInterpreterState) -> *mut PyThreadState;
    //fn _PyThreadState_Init(arg1: *mut PyThreadState);
    pub fn PyThreadState_Clear(arg1: *mut PyThreadState);
    pub fn PyThreadState_Delete(arg1: *mut PyThreadState);
    #[cfg(py_sys_config="WITH_THREAD")]
    pub fn PyThreadState_DeleteCurrent();
    pub fn PyThreadState_Get() -> *mut PyThreadState;
    pub fn PyThreadState_Swap(arg1: *mut PyThreadState) -> *mut PyThreadState;
    pub fn PyThreadState_GetDict() -> *mut PyObject;
    pub fn PyThreadState_SetAsyncExc(arg1: long, arg2: *mut PyObject) -> int;
}

#[derive(Clone, Copy)]
#[repr(C)]
pub enum PyGILState_STATE {
    PyGILState_LOCKED,
    PyGILState_UNLOCKED,
}

extern "C" {
    pub fn PyGILState_Ensure() -> PyGILState_STATE;
    pub fn PyGILState_Release(arg1: PyGILState_STATE);
    pub fn PyGILState_GetThisThreadState() -> *mut PyThreadState;
}

#[inline(always)]
pub unsafe fn PyThreadState_GET() -> *mut PyThreadState {
    PyThreadState_Get()
}