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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
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