diff options
Diffstat (limited to 'dev-python/cython/files/cython-0.29.22-spawn-multiprocessing.patch')
| -rw-r--r-- | dev-python/cython/files/cython-0.29.22-spawn-multiprocessing.patch | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/dev-python/cython/files/cython-0.29.22-spawn-multiprocessing.patch b/dev-python/cython/files/cython-0.29.22-spawn-multiprocessing.patch new file mode 100644 index 000000000000..15b6f968e4bc --- /dev/null +++ b/dev-python/cython/files/cython-0.29.22-spawn-multiprocessing.patch @@ -0,0 +1,27 @@ +Needed to prevent a loop while calling cythonize on macOS - or any platform +defaulting to the 'spawn' method, as Python 3.8 does on Darwin. + +https://github.com/cython/cython/pull/3263 + +[Rebased on 0.29.22] + +From 15ae78bb74a856836dd64828326f4f0812d36520 Mon Sep 17 00:00:00 2001 +From: Marcel Bargull <marcel.bargull@udo.edu> +Date: Fri, 6 Dec 2019 18:21:19 +0100 +Subject: [PATCH] Disable parallel cythonization for "spawn" start method. + +--- +--- a/Cython/Build/Dependencies.py ++++ b/Cython/Build/Dependencies.py +@@ -1071,6 +1071,11 @@ def cythonize(module_list, exclude=None, nthreads=0, aliases=None, quiet=False, + + if N <= 1: + nthreads = 0 ++ if nthreads: ++ import multiprocessing ++ if multiprocessing.get_start_method() == 'spawn': ++ print('Disabling parallel cythonization for "spawn" process start method.') ++ nthreads = 0 + if nthreads: + # Requires multiprocessing (or Python >= 2.6) + try: |