mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-09-21 11:28:58 +03:00
51 lines
1.6 KiB
Python
51 lines
1.6 KiB
Python
# A monkey patch of the base distutils.ccompiler to use parallel builds
|
|
# Tested on 2.7, looks to be identical to 3.3.
|
|
|
|
from multiprocessing import Pool, cpu_count
|
|
from distutils.ccompiler import CCompiler
|
|
import os
|
|
|
|
# hideous monkeypatching. but. but. but.
|
|
def _mp_compile_one(tp):
|
|
(self, obj, build, cc_args, extra_postargs, pp_opts) = tp
|
|
try:
|
|
src, ext = build[obj]
|
|
except KeyError:
|
|
return
|
|
self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
|
|
return
|
|
|
|
def _mp_compile(self, sources, output_dir=None, macros=None,
|
|
include_dirs=None, debug=0, extra_preargs=None,
|
|
extra_postargs=None, depends=None):
|
|
"""Compile one or more source files.
|
|
|
|
see distutils.ccompiler.CCompiler.compile for comments.
|
|
"""
|
|
# A concrete compiler class can either override this method
|
|
# entirely or implement _compile().
|
|
|
|
macros, objects, extra_postargs, pp_opts, build = \
|
|
self._setup_compile(output_dir, macros, include_dirs, sources,
|
|
depends, extra_postargs)
|
|
cc_args = self._get_cc_args(pp_opts, debug, extra_preargs)
|
|
|
|
|
|
try:
|
|
max_procs = int(os.environ.get('MAX_CONCURRENCY', cpu_count()))
|
|
except:
|
|
max_procs = None
|
|
pool = Pool(max_procs)
|
|
try:
|
|
print ("Building using %d processes" % pool._processes)
|
|
except: pass
|
|
arr = [(self, obj, build, cc_args, extra_postargs, pp_opts) for obj in objects]
|
|
results = pool.map_async(_mp_compile_one,arr)
|
|
|
|
pool.close()
|
|
pool.join()
|
|
# Return *all* object filenames, not just the ones we just built.
|
|
return objects
|
|
|
|
CCompiler.compile = _mp_compile
|