Skip to content

gh-100227: Make the Global Interned Dict Safe for Isolated Interpreters #102925

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ericsnowcurrently merged 17 commits into from
Mar 23, 2023
Merged

gh-100227: Make the Global Interned Dict Safe for Isolated Interpreters #102925

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
17 commits
Select commit Hold shift + click to select a range
546b934
Factor out add_threadstate().
ericsnowcurrently Mar 21, 2023
0bcd136
Add _PyThreadState_InitDetached().
ericsnowcurrently Mar 21, 2023
35d5310
Add _PyThreadState_ClearDetached().
ericsnowcurrently Mar 21, 2023
cba9e34
Add _PyRuntime.cached_objects.main_tstate.
ericsnowcurrently Mar 21, 2023
3b1bb8b
Add _Py_AcquireGlobalObjectsState() and _Py_ReleaseGlobalObjectsState().
ericsnowcurrently Mar 22, 2023
eb42aa1
Add _Py_AddToGlobalDict().
ericsnowcurrently Mar 22, 2023
4e9da2d
Drop _Py_AcquireGlobalObjectsState() and _Py_ReleaseGlobalObjectsStat…
ericsnowcurrently Mar 22, 2023
6216207
Add acquire_global_objects_lock() and release_global_objects_lock().
ericsnowcurrently Mar 22, 2023
3c007c0
Add some TODO comments.
ericsnowcurrently Mar 13, 2023
7d95514
Factor out store_interned().
ericsnowcurrently Mar 20, 2023
5c20b84
Store a thread state to use just for interned strings.
ericsnowcurrently Mar 20, 2023
a3ae02a
Always use the main interpreter when possibly resizing the interned d…
ericsnowcurrently Mar 20, 2023
d5fbc37
Use _PyRuntime.cached_objects.main_tstate instead.
ericsnowcurrently Mar 21, 2023
459325f
Add _PyThreadState_IsBound() and _PyThreadState_Unbind().
ericsnowcurrently Mar 21, 2023
4f25244
Make sure the one-off tstate is bound before using it.
ericsnowcurrently Mar 21, 2023
e68535a
Use _Py_AcquireGlobalObjectsState() in store_interned().
ericsnowcurrently Mar 22, 2023
22753b3
Use _Py_AddToGlobalDict().
ericsnowcurrently Mar 22, 2023
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Prev Previous commit
Next Next commit
Store a thread state to use just for interned strings.
  • Loading branch information
@ericsnowcurrently
ericsnowcurrently committed Mar 22, 2023
commit 5c20b84033b1a71a0e8db0245bfb6973f0482b32
5 changes: 5 additions & 0 deletions Include/internal/pycore_unicodeobject.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,11 @@ struct _Py_unicode_runtime_ids {
};

struct _Py_unicode_runtime_state {
struct {
PyThreadState *tstate;
/* The actual interned dict is at
_PyRuntime.cached_objects.interned_strings. */
} interned;
struct _Py_unicode_runtime_ids ids;
};

Expand Down
30 changes: 30 additions & 0 deletions Objects/unicodeobject.c
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -14585,6 +14585,34 @@ _PyUnicode_InitTypes(PyInterpreterState *interp)
}


static PyThreadState *
get_interned_tstate(void)
{
PyThreadState *tstate = _PyRuntime.unicode_state.interned.tstate;
if (tstate == NULL) {
PyInterpreterState *main_interp = _PyInterpreterState_Main();
/* We do not "bind" the thread state here. */
tstate = _PyThreadState_New(main_interp);
if (tstate == NULL) {
PyErr_Clear();
return NULL;
}
_PyRuntime.unicode_state.interned.tstate = tstate;
}
return tstate;
}

static void
clear_interned_tstate(void)
{
PyThreadState *tstate = _PyRuntime.unicode_state.interned.tstate;
if (tstate != NULL) {
_PyRuntime.unicode_state.interned.tstate = NULL;
PyThreadState_Clear(tstate);
PyThreadState_Delete(tstate);
}
}

static inline PyObject *
store_interned(PyObject *obj)
{
Expand Down Expand Up @@ -14710,6 +14738,8 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
PyDict_Clear(interned);
Py_DECREF(interned);
set_interned_dict(NULL);

clear_interned_tstate();
}


Expand Down