Debian Patches
Status for mypaint/2.0.1-12
| Patch | Description | Author | Forwarded | Bugs | Origin | Last update |
|---|---|---|---|---|---|---|
| python3.11.patch | [PATCH] python: fix for Python 3.11 - python 3 always open in universal mode, U is default mode in 3.0, and removed in 3.11 - mypaint doesn't use ld?n?gettext, so bind_textdomain_codeset isn't needed, that function is deprecated in 3.8 and is no-ops in 3.10 and removed in 3.11 |
=?utf-8?b?xJBvw6BuIFRy4bqnbiBDw7RuZyBEYW5o?= <congdanhqx@gmail.com> | yes | 2022-11-09 | ||
| 0002-Handle-python3-distutils-removal.patch | Handle python3-distutils removal | Boyuan Yang <byang@debian.org> | yes | upstream | 2024-01-30 | |
| fix_openmp_segfault.patch | [PATCH] Acquire/release the GIL while processing tile requests Fixes crashes on some Linux distros, potentially improves performance. When handling tile requests we currently use an openmp critical block in a callback registered with libmypaint. The callback calls into Python code without locking the GIL. This sometimes crashes mypaint in numpy's memory cache allocator on some Linux distros that compile numpy with run-time asserts (without `-DNDEBUG`), like Gentoo, as numpy uses Python's GIL internally as a locking mechanism for its non-thread-safe global cache management. Acquiring the GIL in the C callback, before calling into Python, ensures that the GIL is still locked by the current thread when it reaches numpy's code, and thus prevents the crashes. We yield the GIL whenever Python code calls again into libmypaint, This allows other threads to acquire it, and concurrent callbacks to run, which prevents deadlocks that would otherwise happen while waiting for all the callbacks to finish on Python's side. When libmypaint is done we re-acquire the GIL, and return up to the callback where the GIL is released again after some Python reference count bookkeeping. The OpenMP critical block is no longer necessary after introducing the GIL locking mechanism. This would potentially improve performance as the C code in libmypaint can process multiple callbacks at the same time during the `Py_BEGIN_ALLOW_THREADS' period that yields the GIL. |
Red Rozenglass <rozenglass@protonmail.com> | not-needed | debian | upstream, https://github.com/mypaint/mypaint/commit/356716e7bacfcbb1f3ab80171fea405fdd10b2b9 | 2020-09-11 |