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gh-76785: Use Pending Calls When Releasing Cross-Interpreter Data #109556

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Merged
ericsnowcurrently merged 11 commits into from
Sep 19, 2023
Merged

gh-76785: Use Pending Calls When Releasing Cross-Interpreter Data #109556

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fb807e3
Use the raw allocator.
ericsnowcurrently Aug 30, 2023
e96eefc
Drop the unnecessary arg to _release_xid_data().
ericsnowcurrently Sep 9, 2023
53e1029
Pass a flag to _release_xid_data().
ericsnowcurrently Sep 7, 2023
8ef9b95
Add the _Py_pending_call_func typedef.
ericsnowcurrently Sep 7, 2023
daa7f32
Do not bother freeing the data if not set.
ericsnowcurrently Sep 7, 2023
5d94456
Use pending calls when releasing cross-interpreter data.
ericsnowcurrently Sep 7, 2023
c610c41
Use _release_xidata_pending() indirectly.
ericsnowcurrently Sep 7, 2023
1d12503
Optionally free the provided XID after releasing.
ericsnowcurrently Sep 7, 2023
0b5a84a
Add _PyCrossInterpreterData_ReleaseAndRawFree().
ericsnowcurrently Sep 7, 2023
ac9d0db
Fix _release_xid_data().
ericsnowcurrently Sep 19, 2023
f38f44b
Do not directly free the XI data in _channelitem_clear().
ericsnowcurrently Sep 19, 2023
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Optionally free the provided XID after releasing.
  • Loading branch information
@ericsnowcurrently
ericsnowcurrently committed Sep 9, 2023
commit 1d125033320311fec845bf39fb47878fecc63a30
34 changes: 31 additions & 3 deletions Python/pystate.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2424,12 +2424,25 @@ _release_xidata_pending(void *data)
return 0;
}

int
_PyCrossInterpreterData_Release(_PyCrossInterpreterData *data)
static int
_xidata_release_and_rawfree_pending(void *data)
{
_xidata_clear((_PyCrossInterpreterData *)data);
PyMem_RawFree(data);
return 0;
}

static int
_xidata_release(_PyCrossInterpreterData *data, int rawfree)
{
if ((data->data == NULL || data->free == NULL) && data->obj == NULL) {
// Nothing to release!
data->data = NULL;
if (rawfree) {
PyMem_RawFree(data);
}
else {
data->data = NULL;
}
return 0;
}

Expand All @@ -2440,21 +2453,36 @@ _PyCrossInterpreterData_Release(_PyCrossInterpreterData *data)
// This function shouldn't have been called.
// XXX Someone leaked some memory...
assert(PyErr_Occurred());
if (rawfree) {
PyMem_RawFree(data);
}
return -1;
}

// "Release" the data and/or the object.
if (interp == current_fast_get(interp->runtime)->interp) {
_xidata_clear(data);
if (rawfree) {
PyMem_RawFree(data);
}
}
else {
_Py_pending_call_func func = _release_xidata_pending;
if (rawfree) {
func = _xidata_release_and_rawfree_pending;
}
// XXX Emit a warning if this fails?
_PyEval_AddPendingCall(interp, func, data, 0);
}
return 0;
}

int
_PyCrossInterpreterData_Release(_PyCrossInterpreterData *data)
{
return _xidata_release(data, 0);
}

/* registry of {type -> crossinterpdatafunc} */

/* For now we use a global registry of shareable classes. An
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