FazBrowse GitHub Viewer | Trending |
URL:
| Home
Tools: [Download Repo ZIP]   [Original HTTPS Page]

[3.12] gh-124785: Revert "[3.12] gh-116510: Fix a crash due to shared immortal interned strings. (gh-124541)" by nascheme · Pull Request #124814 · python/cpython · GitHub

/ cpython Public

[3.12] gh-124785: Revert "[3.12] gh-116510: Fix a crash due to shared immortal interned strings. (gh-124541)" #124814

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
Yhg1s merged 1 commit into from
Oct 1, 2024
Conversation 0 Commits 1 Checks 0 Files changed
Merged

[3.12] gh-124785: Revert "[3.12] gh-116510: Fix a crash due to shared immortal interned strings. (gh-124541)" #124814

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension .c  (1) .rst  (1) All 2 file types selected
Deleted files Viewed files
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Unified
Split
Hide whitespace
Diff view
Unified
Split
Hide whitespace
5 changes: 0 additions & 5 deletions Misc/NEWS.d/next/Core_and_Builtins/2024-09-25-12-37-58.gh-issue-116510.WeBAx1.rst
Show comments
View file
Open in desktop

This file was deleted.

48 changes: 6 additions & 42 deletions Objects/unicodeobject.c
Show comments
View file
Open in desktop
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
Show hidden characters
Original file line number Diff line number Diff line change
Expand Up @@ -286,37 +286,13 @@ hashtable_unicode_compare(const void *key1, const void *key2)
}
}

/* Return true if this interpreter should share the main interpreter's
intern_dict. That's important for interpreters which load basic
single-phase init extension modules (m_size == -1). There could be interned
immortal strings that are shared between interpreters, due to the
PyDict_Update(mdict, m_copy) call in import_find_extension().

It's not safe to deallocate those strings until all interpreters that
potentially use them are freed. By storing them in the main interpreter, we
ensure they get freed after all other interpreters are freed.
*/
static bool
has_shared_intern_dict(PyInterpreterState *interp)
{
PyInterpreterState *main_interp = _PyInterpreterState_Main();
return interp != main_interp && interp->feature_flags & Py_RTFLAGS_USE_MAIN_OBMALLOC;
}

static int
init_interned_dict(PyInterpreterState *interp)
{
assert(get_interned_dict(interp) == NULL);
PyObject *interned;
if (has_shared_intern_dict(interp)) {
interned = get_interned_dict(_PyInterpreterState_Main());
Py_INCREF(interned);
}
else {
interned = PyDict_New();
if (interned == NULL) {
return -1;
}
PyObject *interned = interned = PyDict_New();
if (interned == NULL) {
return -1;
}
_Py_INTERP_CACHED_OBJECT(interp, interned_strings) = interned;
return 0;
Expand All @@ -327,10 +303,7 @@ clear_interned_dict(PyInterpreterState *interp)
{
PyObject *interned = get_interned_dict(interp);
if (interned != NULL) {
if (!has_shared_intern_dict(interp)) {
// only clear if the dict belongs to this interpreter
PyDict_Clear(interned);
}
PyDict_Clear(interned);
Py_DECREF(interned);
_Py_INTERP_CACHED_OBJECT(interp, interned_strings) = NULL;
}
Expand Down Expand Up @@ -15163,13 +15136,6 @@ _PyUnicode_ClearInterned(PyInterpreterState *interp)
}
assert(PyDict_CheckExact(interned));

if (has_shared_intern_dict(interp)) {
// the dict doesn't belong to this interpreter, skip the debug
// checks on it and just clear the pointer to it
clear_interned_dict(interp);
return;
}

#ifdef INTERNED_STATS
fprintf(stderr, "releasing %zd interned strings\n",
PyDict_GET_SIZE(interned));
Expand Down Expand Up @@ -15688,10 +15654,8 @@ _PyUnicode_Fini(PyInterpreterState *interp)
{
struct _Py_unicode_state *state = &interp->unicode;

if (!has_shared_intern_dict(interp)) {
// _PyUnicode_ClearInterned() must be called before _PyUnicode_Fini()
assert(get_interned_dict(interp) == NULL);
}
// _PyUnicode_ClearInterned() must be called before _PyUnicode_Fini()
assert(get_interned_dict(interp) == NULL);

_PyUnicode_FiniEncodings(&state->fs_codec);

Expand Down
Back | FazBrowse Home | New Git URL