8000 bpo-32146: multiprocessing freeze_support needed outside win32 by bbayles · Pull Request #5195 · python/cpython · GitHub
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bpo-32146: multiprocessing freeze_support needed outside win32 #5195

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bpo-32146: multiprocessing freeze_support needed outside win32 #5195

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7b90728
bpo-32146: freeze_support can apply to non-Windows platforms also
bbayles Jan 11, 2018
b0d30bc
bpo-32146: Provisional fix for non-Windows executables (spawn)
bbayles Jan 13, 2018
8baf4e4
bpo-32146: Provisional fix for non-Windows executables (forkserver)
bbayles Jan 14, 2018
64456d9
bpo-32146: Move commandline checks to separate functions
bbayles Jan 14, 2018
748c2f1
bpo-32146: Add Misc/NEWS entry for freeze_support enhancements
bbayles Jan 14, 2018
3a0964a
bpo-32146: Use dummy --multiprocessing- command line arguments
bbayles Jan 14, 2018
7b49c00
bpo-32146: Only use special command line arguments when frozen
bbayles Jan 15, 2018
26a6313
bpo-32146: Factor out command line manipulation for testing
bbayles Jan 15, 2018
afdd553
bpo-32146: Add note to docs about freeze_support on Unix
bbayles Jan 15, 2018
d72742d
bpo-32146: Add missing backtick
bbayles Jan 15, 2018
97e6a9d
bpo-32146: Fix and add test for extra preload modules
bbayles Jan 16, 2018
f0ca86b
bpo-32146: Fix up comments
bbayles Jan 29, 2018
fce2afc
Merge branch 'master' into unix-freezesupport-3.7
bbayles Jul 13, 2018
5a8e3c8
Merge remote-tracking branch 'upstream/master' into unix-freezesuppor…
bbayles Jul 15, 2018
23e9c64
Merge branch 'master' into unix-freezesupport-3.7
bbayles Jan 11, 2019
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bpo-32146: Provisional fix for non-Windows executables (forkserver)
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@bbayles
bbayles committed Jan 14, 2018
commit 8baf4e4fc686c8e35d4e702bb78812453fe35077
18 changes: 17 additions & 1 deletion Lib/multiprocessing/spawn.py
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Expand Up @@ -8,6 +8,7 @@
# Licensed to PSF under a Contributor Agreement.
#

import ast
import os
import sys
import runpy
Expand Down Expand Up @@ -83,7 +84,22 @@ def freeze_support():
from multiprocessing.semaphore_tracker import main;
main(r)
sys.exit()
# TODO: fix the command line for the fork server (unix)
# fix the command line for the fork server (unix)
elif (
(len(sys.argv) >= 3) and
(sys.argv[-2] == '-c') and
('forkserver import main;' in sys.argv[-1])
):
cmd = sys.argv[-1]
main_args = cmd.split('main(')[1].rsplit(')', 1)[0].split(', ', 3)
listener_fd = int(main_args[0])
alive_r = int(main_args[1])
preload = ast.literal_eval(main_args[2])
kwds = ast.literal_eval(main_args[3][2:])

from multiprocessing.forkserver import main
main(listener_fd, alive_r, preload, **kwds)
sys.exit()


def get_command_line(**kwds):
Expand Down
0