From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- testing/web-platform/tests/tools/manifest/mputil.py | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 testing/web-platform/tests/tools/manifest/mputil.py (limited to 'testing/web-platform/tests/tools/manifest/mputil.py') diff --git a/testing/web-platform/tests/tools/manifest/mputil.py b/testing/web-platform/tests/tools/manifest/mputil.py new file mode 100644 index 0000000000..fc9d5ac94c --- /dev/null +++ b/testing/web-platform/tests/tools/manifest/mputil.py @@ -0,0 +1,14 @@ +import multiprocessing +import sys + +def max_parallelism() -> int: + cpu_count = multiprocessing.cpu_count() + if sys.platform == 'win32': + # On Python 3 on Windows, using >= MAXIMUM_WAIT_OBJECTS processes + # causes a crash in the multiprocessing module. Whilst this enum + # can technically have any value, it is usually 64. For safety, + # restrict manifest regeneration to 56 processes on Windows. + # + # See https://bugs.python.org/issue26903 and https://bugs.python.org/issue40263 + cpu_count = min(cpu_count, 56) + return cpu_count -- cgit v1.2.3