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✏️ /usr/lib64/python3.9/multiprocessing/popen_spawn_posix.py

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import io
import os

from .context import reduction, set_spawning_popen
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, fd):
        self.fd = fd
    def detach(self):
        return self.fd

#
# Start child process using a fresh interpreter
#

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

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

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

def _launch(self, process_obj):
        from . import resource_tracker
        tracker_fd = resource_tracker.getfd()
        self._fds.append(tracker_fd)
        prep_data = spawn.get_preparation_data(process_obj._name)
        fp = io.BytesIO()
        set_spawning_popen(self)
        try:
            reduction.dump(prep_data, fp)
            reduction.dump(process_obj, fp)
        finally:
            set_spawning_popen(None)

parent_r = child_w = child_r = parent_w = None
        try:
            parent_r, child_w = os.pipe()
            child_r, parent_w = os.pipe()
            cmd = spawn.get_command_line(tracker_fd=tracker_fd,
                                         pipe_handle=child_r)
            self._fds.extend([child_r, child_w])
            self.pid = util.spawnv_passfds(spawn.get_executable(),
                                           cmd, self._fds)
            self.sentinel = parent_r
            with open(parent_w, 'wb', closefd=False) as f:
                f.write(fp.getbuffer())
        finally:
            fds_to_close = []
            for fd in (parent_r, parent_w):
                if fd is not None:
                    fds_to_close.append(fd)
            self.finalizer = util.Finalize(self, util.close_fds, fds_to_close)

for fd in (child_r, child_w):
                if fd is not None:
                    os.close(fd)

Batal

⬅ python3.9 23 item

Nama	Tipe	Ukuran	Diubah	Perm	Aksi
📁 __pycache__	dir	—	18/06/26 03:11	0755	📂
📁 dummy	dir	—	18/06/26 03:11	0755	📂
🐍 __init__.py	py	916 B	01/11/25 01:40	0644	✏️ ⬇
🐍 connection.py	py	31.1 KB	20/05/26 23:51	0644	✏️ ⬇
🐍 context.py	py	11 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 forkserver.py	py	11.9 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 heap.py	py	11.4 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 managers.py	py	46.2 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 pool.py	py	31.8 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 popen_fork.py	py	2.3 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 popen_forkserver.py	py	2.2 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 popen_spawn_posix.py	py	2 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 popen_spawn_win32.py	py	3.9 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 process.py	py	11.7 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 queues.py	py	11.7 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 reduction.py	py	9.3 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 resource_sharer.py	py	5 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 resource_tracker.py	py	8.4 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 shared_memory.py	py	18 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 sharedctypes.py	py	6.2 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 spawn.py	py	9.1 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 synchronize.py	py	11.3 KB	01/11/25 01:40	0644	✏️ ⬇
🐍 util.py	py	13.7 KB	01/11/25 01:40	0644	✏️ ⬇

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