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static void
_ensure_current_cause(PyThreadState *tstate, PyObject *cause)
{
if (cause == NULL) {
return;
}
PyObject *exc = _PyErr_GetRaisedException(tstate);
assert(exc != NULL);
assert(PyException_GetCause(exc) == NULL);
PyException_SetCause(exc, Py_NewRef(cause));
_PyErr_SetRaisedException(tstate, exc);
}
/* InterpreterError extends Exception */
static PyTypeObject _PyExc_InterpreterError = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "concurrent.interpreters.InterpreterError",
.tp_doc = PyDoc_STR("A cross-interpreter operation failed"),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
//.tp_traverse = ((PyTypeObject *)PyExc_Exception)->tp_traverse,
//.tp_clear = ((PyTypeObject *)PyExc_Exception)->tp_clear,
//.tp_base = (PyTypeObject *)PyExc_Exception,
};
PyObject *PyExc_InterpreterError = (PyObject *)&_PyExc_InterpreterError;
/* InterpreterNotFoundError extends InterpreterError */
static PyTypeObject _PyExc_InterpreterNotFoundError = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "concurrent.interpreters.InterpreterNotFoundError",
.tp_doc = PyDoc_STR("An interpreter was not found"),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC,
//.tp_traverse = ((PyTypeObject *)PyExc_Exception)->tp_traverse,
//.tp_clear = ((PyTypeObject *)PyExc_Exception)->tp_clear,
.tp_base = &_PyExc_InterpreterError,
};
PyObject *PyExc_InterpreterNotFoundError = (PyObject *)&_PyExc_InterpreterNotFoundError;
/* NotShareableError extends TypeError */
static int
_init_notshareableerror(exceptions_t *state)
{
const char *name = "concurrent.interpreters.NotShareableError";
PyObject *base = PyExc_TypeError;
PyObject *ns = NULL;
PyObject *exctype = PyErr_NewException(name, base, ns);
if (exctype == NULL) {
return -1;
}
state->PyExc_NotShareableError = exctype;
return 0;
}
static void
_fini_notshareableerror(exceptions_t *state)
{
Py_CLEAR(state->PyExc_NotShareableError);
}
static PyObject *
get_notshareableerror_type(PyThreadState *tstate)
{
_PyXI_state_t *local = _PyXI_GET_STATE(tstate->interp);
if (local == NULL) {
PyErr_Clear();
return NULL;
}
return local->exceptions.PyExc_NotShareableError;
}
static void
_ensure_notshareableerror(PyThreadState *tstate,
PyObject *cause, int force, PyObject *msgobj)
{
PyObject *ctx = _PyErr_GetRaisedException(tstate);
PyObject *exctype = get_notshareableerror_type(tstate);
if (exctype != NULL) {
if (!force && ctx != NULL && Py_TYPE(ctx) == (PyTypeObject *)exctype) {
// A NotShareableError instance is already set.
assert(cause == NULL);
_PyErr_SetRaisedException(tstate, ctx);
}
}
else {
exctype = PyExc_TypeError;
}
_PyErr_SetObject(tstate, exctype, msgobj);
// We have to set the context manually since _PyErr_SetObject() doesn't.
_PyErr_ChainExceptions1Tstate(tstate, ctx);
_ensure_current_cause(tstate, cause);
}
static void
set_notshareableerror(PyThreadState *tstate, PyObject *cause, int force, const char *msg)
{
PyObject *msgobj = PyUnicode_FromString(msg);
if (msgobj == NULL) {
assert(_PyErr_Occurred(tstate));
}
else {
_ensure_notshareableerror(tstate, cause, force, msgobj);
Py_DECREF(msgobj);
}
}
static void
format_notshareableerror_v(PyThreadState *tstate, PyObject *cause, int force,
const char *format, va_list vargs)
{
PyObject *msgobj = PyUnicode_FromFormatV(format, vargs);
if (msgobj == NULL) {
assert(_PyErr_Occurred(tstate));
}
else {
_ensure_notshareableerror(tstate, cause, force, msgobj);
Py_DECREF(msgobj);
}
}
static void
format_notshareableerror(PyThreadState *tstate, PyObject *cause, int force,
const char *format, ...)
{
va_list vargs;
va_start(vargs, format);
format_notshareableerror_v(tstate, cause, force, format, vargs);
va_end(vargs);
}
/* lifecycle */
static int
init_static_exctypes(exceptions_t *state, PyInterpreterState *interp)
{
assert(state == &_PyXI_GET_STATE(interp)->exceptions);
PyTypeObject *base = (PyTypeObject *)PyExc_Exception;
// PyExc_InterpreterError
_PyExc_InterpreterError.tp_base = base;
_PyExc_InterpreterError.tp_traverse = base->tp_traverse;
_PyExc_InterpreterError.tp_clear = base->tp_clear;
if (_PyStaticType_InitBuiltin(interp, &_PyExc_InterpreterError) < 0) {
goto error;
}
state->PyExc_InterpreterError = (PyObject *)&_PyExc_InterpreterError;
// PyExc_InterpreterNotFoundError
_PyExc_InterpreterNotFoundError.tp_traverse = base->tp_traverse;
_PyExc_InterpreterNotFoundError.tp_clear = base->tp_clear;
if (_PyStaticType_InitBuiltin(interp, &_PyExc_InterpreterNotFoundError) < 0) {
goto error;
}
state->PyExc_InterpreterNotFoundError =
(PyObject *)&_PyExc_InterpreterNotFoundError;
return 0;
error:
fini_static_exctypes(state, interp);
return -1;
}
static void
fini_static_exctypes(exceptions_t *state, PyInterpreterState *interp)
{
assert(state == &_PyXI_GET_STATE(interp)->exceptions);
if (state->PyExc_InterpreterNotFoundError != NULL) {
state->PyExc_InterpreterNotFoundError = NULL;
_PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterNotFoundError);
}
if (state->PyExc_InterpreterError != NULL) {
state->PyExc_InterpreterError = NULL;
_PyStaticType_FiniBuiltin(interp, &_PyExc_InterpreterError);
}
}
static int
init_heap_exctypes(exceptions_t *state)
{
if (_init_notshareableerror(state) < 0) {
goto error;
}
return 0;
error:
fini_heap_exctypes(state);
return -1;
}
static void
fini_heap_exctypes(exceptions_t *state)
{
_fini_notshareableerror(state);
}
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