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opt / alt / python35 / lib64 / python3.5 / multiprocessing /

ðŸ“ ..
ðŸ“„ __init__.py(923 B)
ðŸ“ __pycache__
ðŸ“„ connection.py(30.13 KB)
ðŸ“„ context.py(10.43 KB)
ðŸ“ dummy
ðŸ“„ forkserver.py(8.02 KB)
ðŸ“„ heap.py(8.13 KB)
ðŸ“„ managers.py(35.12 KB)
ðŸ“„ pool.py(25.21 KB)
ðŸ“„ popen_fork.py(2.27 KB)
ðŸ“„ popen_forkserver.py(1.92 KB)
ðŸ“„ popen_spawn_posix.py(1.87 KB)
ðŸ“„ popen_spawn_win32.py(2.93 KB)
ðŸ“„ process.py(8.92 KB)
ðŸ“„ queues.py(10.5 KB)
ðŸ“„ reduction.py(7.92 KB)
ðŸ“„ resource_sharer.py(5.19 KB)
ðŸ“„ semaphore_tracker.py(4.71 KB)
ðŸ“„ sharedctypes.py(6.08 KB)
ðŸ“„ spawn.py(8.65 KB)
ðŸ“„ synchronize.py(11.77 KB)
ðŸ“„ util.py(11.37 KB)

Editing: popen_fork.py

import os
import sys
import signal

from . import util

__all__ = ['Popen']

#
# Start child process using fork
#

class Popen(object):
    method = 'fork'

def __init__(self, process_obj):
        sys.stdout.flush()
        sys.stderr.flush()
        self.returncode = None
        self._launch(process_obj)

def duplicate_for_child(self, fd):
        return fd

def poll(self, flag=os.WNOHANG):
        if self.returncode is None:
            while True:
                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
                else:
                    break
            if pid == self.pid:
                if os.WIFSIGNALED(sts):
                    self.returncode = -os.WTERMSIG(sts)
                else:
                    assert os.WIFEXITED(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 terminate(self):
        if self.returncode is None:
            try:
                os.kill(self.pid, signal.SIGTERM)
            except ProcessLookupError:
                pass
            except OSError:
                if self.wait(timeout=0.1) is None:
                    raise

def _launch(self, process_obj):
        code = 1
        parent_r, child_w = os.pipe()
        self.pid = os.fork()
        if self.pid == 0:
            try:
                os.close(parent_r)
                if 'random' in sys.modules:
                    import random
                    random.seed()
                code = process_obj._bootstrap()
            finally:
                os._exit(code)
        else:
            os.close(child_w)
            util.Finalize(self, os.close, (parent_r,))
            self.sentinel = parent_r

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Editing: popen_fork.py

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