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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-04-07 20:15
dummy	[ DIR ]	drwxr-xr-x	2025-04-07 20:15
__init__.py	916 B	-rw-r--r--	2024-11-30 21:22
connection.py	30.86 KB	-rw-r--r--	2024-11-30 21:22
context.py	11.33 KB	-rw-r--r--	2024-11-30 21:22
forkserver.py	11.86 KB	-rw-r--r--	2024-11-30 21:22
heap.py	11.35 KB	-rw-r--r--	2024-11-30 21:22
managers.py	46.57 KB	-rw-r--r--	2024-11-30 21:22
pool.py	31.99 KB	-rw-r--r--	2024-11-30 21:22
popen_fork.py	2.32 KB	-rw-r--r--	2024-11-30 21:22
popen_forkserver.py	2.18 KB	-rw-r--r--	2024-11-30 21:22
popen_spawn_posix.py	1.98 KB	-rw-r--r--	2024-11-30 21:22
popen_spawn_win32.py	3.93 KB	-rw-r--r--	2024-11-30 21:22
process.py	11.82 KB	-rw-r--r--	2024-11-30 21:22
queues.py	11.74 KB	-rw-r--r--	2024-11-30 21:22
reduction.py	9.29 KB	-rw-r--r--	2024-11-30 21:22
resource_sharer.py	5.01 KB	-rw-r--r--	2024-11-30 21:22
resource_tracker.py	8.76 KB	-rw-r--r--	2024-11-30 21:22
shared_memory.py	18.03 KB	-rw-r--r--	2024-11-30 21:22
sharedctypes.py	6.16 KB	-rw-r--r--	2024-11-30 21:22
spawn.py	9.2 KB	-rw-r--r--	2024-11-30 21:22
synchronize.py	11.5 KB	-rw-r--r--	2024-11-30 21:22
util.py	13.74 KB	-rw-r--r--	2024-11-30 21:22

Rename

import io
import os

from .context import reduction, set_spawning_popen
if not reduction.HAVE_SEND_HANDLE:
    raise ImportError('No support for sending fds between processes')
from . import forkserver
from . import popen_fork
from . import spawn
from . import util

__all__ = ['Popen']

#
# Wrapper for an fd used while launching a process
#

class _DupFd(object):
    def __init__(self, ind):
        self.ind = ind
    def detach(self):
        return forkserver.get_inherited_fds()[self.ind]

#
# Start child process using a server process
#

class Popen(popen_fork.Popen):
    method = 'forkserver'
    DupFd = _DupFd

def __init__(self, process_obj):
        self._fds = []
        super().__init__(process_obj)

def duplicate_for_child(self, fd):
        self._fds.append(fd)
        return len(self._fds) - 1

def _launch(self, process_obj):
        prep_data = spawn.get_preparation_data(process_obj._name)
        buf = io.BytesIO()
        set_spawning_popen(self)
        try:
            reduction.dump(prep_data, buf)
            reduction.dump(process_obj, buf)
        finally:
            set_spawning_popen(None)

self.sentinel, w = forkserver.connect_to_new_process(self._fds)
        # Keep a duplicate of the data pipe's write end as a sentinel of the
        # parent process used by the child process.
        _parent_w = os.dup(w)
        self.finalizer = util.Finalize(self, util.close_fds,
                                       (_parent_w, self.sentinel))
        with open(w, 'wb', closefd=True) as f:
            f.write(buf.getbuffer())
        self.pid = forkserver.read_signed(self.sentinel)

def poll(self, flag=os.WNOHANG):
        if self.returncode is None:
            from multiprocessing.connection import wait
            timeout = 0 if flag == os.WNOHANG else None
            if not wait([self.sentinel], timeout):
                return None
            try:
                self.returncode = forkserver.read_signed(self.sentinel)
            except (OSError, EOFError):
                # This should not happen usually, but perhaps the forkserver
                # process itself got killed
                self.returncode = 255

return self.returncode