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S-RECOVERY: ACTIVE | Path: /usr/lib/python3.8/multiprocessing | Next: 5s

Name	Size	Perms	Actions
__init__.py	916	R	[Edit]
__pycache__/	-	R	[Enter]
connection.py	31,685	R	[Edit]
context.py	11,257	R	[Edit]
dummy/	-	R	[Enter]
forkserver.py	12,531	R	[Edit]
heap.py	11,626	R	[Edit]
managers.py	48,917	R	[Edit]
pool.py	32,509	R	[Edit]
popen_fork.py	2,568	R	[Edit]
popen_forkserver.py	2,230	R	[Edit]
popen_spawn_posix.py	2,029	R	[Edit]
popen_spawn_win32.py	4,011	R	[Edit]
process.py	12,005	R	[Edit]
queues.py	11,690	R	[Edit]
reduction.py	9,512	R	[Edit]
resource_sharer.py	5,352	R	[Edit]
resource_tracker.py	8,613	R	[Edit]
shared_memory.py	17,422	R	[Edit]
sharedctypes.py	6,306	R	[Edit]
spawn.py	9,296	R	[Edit]
synchronize.py	11,610	R	[Edit]
util.py	13,950	R	[Edit]

import os
import signal

from . import util

__all__ = ['Popen']

#
# Start child process using fork
#

class Popen(object):
    method = 'fork'

def __init__(self, process_obj):
        util._flush_std_streams()
        self.returncode = None
        self.finalizer = None
        self._launch(process_obj)

def duplicate_for_child(self, fd):
        return fd

def poll(self, flag=os.WNOHANG):
        if self.returncode is None:
            try:
                pid, sts = os.waitpid(self.pid, flag)
            except OSError as e:
                # Child process not yet created. See #1731717
                # e.errno == errno.ECHILD == 10
                return None
            if pid == self.pid:
                if os.WIFSIGNALED(sts):
                    self.returncode = -os.WTERMSIG(sts)
                else:
                    assert os.WIFEXITED(sts), "Status is {:n}".format(sts)
                    self.returncode = os.WEXITSTATUS(sts)
        return self.returncode

def wait(self, timeout=None):
        if self.returncode is None:
            if timeout is not None:
                from multiprocessing.connection import wait
                if not wait([self.sentinel], timeout):
                    return None
            # This shouldn't block if wait() returned successfully.
            return self.poll(os.WNOHANG if timeout == 0.0 else 0)
        return self.returncode

def _send_signal(self, sig):
        if self.returncode is None:
            try:
                os.kill(self.pid, sig)
            except ProcessLookupError:
                pass
            except OSError:
                if self.wait(timeout=0.1) is None:
                    raise

def terminate(self):
        self._send_signal(signal.SIGTERM)

def kill(self):
        self._send_signal(signal.SIGKILL)

def _launch(self, process_obj):
        code = 1
        parent_r, child_w = os.pipe()
        child_r, parent_w = os.pipe()
        self.pid = os.fork()
        if self.pid == 0:
            try:
                os.close(parent_r)
                os.close(parent_w)
                code = process_obj._bootstrap(parent_sentinel=child_r)
            finally:
                os._exit(code)
        else:
            os.close(child_w)
            os.close(child_r)
            self.finalizer = util.Finalize(self, util.close_fds,
                                           (parent_r, parent_w,))
            self.sentinel = parent_r

def close(self):
        if self.finalizer is not None:
            self.finalizer()