delta/cpython-git.git/Python/pystate.c, branch v3.7.13

bpo-20526: Fix PyThreadState_Clear(): don't decref frame (GH-19120) (GH-19136) (GH-19137)

2020-03-24T16:56:01+00:00

PyThreadState.frame is a borrowed reference, not a strong reference:
PyThreadState_Clear() must not call Py_CLEAR(tstate->frame).

Remove test_threading.test_warnings_at_exit(): we cannot warranty
that the Python thread state of daemon threads is cleared in a
reliable way during Python shutdown.

(cherry picked from commit 5804f878e779712e803be927ca8a6df389d82cdf)
(cherry picked from commit e97c8b0688bc62959ced477d842fcd37992ef649)

bpo-39776: Lock ++interp->tstate_next_unique_id (GH-18746)

2020-03-03T08:19:58+00:00

- Threads created by PyGILState_Ensure() could have a duplicate tstate->id.

(cherry picked from commit b3b9ade4a3d3fe00d933bcd8fc5c5c755d1024f9)

closes bpo-38124: Fix bounds check in PyState_AddModule. (GH-16007)

2019-09-12T00:02:50+00:00

The >=, checking whether a module index was in already in the module-by-index list, needed to be strict.

Also, fold nested ifs into one and fix some bad spacing.
(cherry picked from commit 39de95b746c990e6a2fe9af5fad01747f58b2e5f)

Co-authored-by: Benjamin Peterson

[3.7] bpo-34408: Prevent a null pointer dereference and resource leakage in `PyInterpreterState_New()` (GH-8767) (GH-13237)

2019-05-10T20:16:19+00:00

* A pointer in `PyInterpreterState_New()` could have been `NULL` when being dereferenced.

* Memory was leaked in `PyInterpreterState_New()` when taking some error-handling code path.
(cherry picked from commit 95d630e)

Co-authored-by: Pablo Galindo

bpo-35414: Add a missing Py_INCREF(Py_None) in PyState_RemoveModule(). (GH-10914)

2018-12-05T07:51:08+00:00

(cherry picked from commit 2a893430c9c8378cbdfac95895a64fa07aaff9ed)

Co-authored-by: Zackery Spytz

bpo-33612: Remove PyThreadState_Clear() assertion (GH-7069) (GH-7074)

2018-05-23T19:58:21+00:00

bpo-25612, bpo-33612: Remove an assertion from PyThreadState_Clear()
which failed at Python shutdown or on fork if a thread was running a
generator.
(cherry picked from commit b6dccf54fd3bac9c87348d96f9d6b571608c15bc)

Co-authored-by: Victor Stinner

bpo-32604: Remove xid registry. (#6813)

2018-05-15T13:56:18+00:00

Remove the interpreters testing helper (and xid registry).

bpo-33005: Fix _PyGILState_Reinit() (GH-6001)

2018-03-06T13:52:27+00:00

Fix a crash on fork when using a custom memory allocator (ex: using
PYTHONMALLOC env var).

_PyGILState_Reinit() and _PyInterpreterState_Enable() now use the
default RAW memory allocator to allocate a new interpreters mutex on
fork.
(cherry picked from commit 5d92647102fac9e116b98ab8bbc632eeed501c34)

Co-authored-by: Victor Stinner

bpo-32604: Swap threads only if the interpreter is different. (gh-5783)

2018-02-21T00:09:41+00:00

The CPython runtime assumes that there is a one-to-one relationship (for a given interpreter) between PyThreadState and OS threads. Sending and receiving on a channel in the same interpreter was causing crashes because of this (specifically due to a check in PyThreadState_Swap()). The solution is to not switch threads if the interpreter is the same.
(cherry picked from commit f53d9f2778a87bdd48eb9030f782a4ebf9e7622f)

Co-authored-by: Eric Snow

bpo-32604: Clean up created subinterpreters before runtime finalization. (gh-5710)

2018-02-17T02:15:24+00:00

(cherry picked from commit 4c6955e2b0ccf88c705f8d1fac685a8e65f9699e)

Co-authored-by: Eric Snow