Server: appserver-7f0f8755-nginx-15961cad18524ec5a9db05f2a6a7e440
Current directory: /usr/lib/python2.7/multiprocessing
Software: nginx/1.27.5
Shell Command
Create a new file
Upload file
File: process.py
# # Module providing the `Process` class which emulates `threading.Thread` # # multiprocessing/process.py # # Copyright (c) 2006-2008, R Oudkerk # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions # are met: # # 1. Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # 2. Redistributions in binary form must reproduce the above copyright # notice, this list of conditions and the following disclaimer in the # documentation and/or other materials provided with the distribution. # 3. Neither the name of author nor the names of any contributors may be # used to endorse or promote products derived from this software # without specific prior written permission. # # THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE # ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE # FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS # OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY # OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF # SUCH DAMAGE. # __all__ = ['Process', 'current_process', 'active_children'] # # Imports # import os import sys import signal import itertools # # # try: ORIGINAL_DIR = os.path.abspath(os.getcwd()) except OSError: ORIGINAL_DIR = None # # Public functions # def current_process(): ''' Return process object representing the current process ''' return _current_process def active_children(): ''' Return list of process objects corresponding to live child processes ''' _cleanup() return list(_current_process._children) # # # def _cleanup(): # check for processes which have finished for p in list(_current_process._children): if p._popen.poll() is not None: _current_process._children.discard(p) # # The `Process` class # class Process(object): ''' Process objects represent activity that is run in a separate process The class is analagous to `threading.Thread` ''' _Popen = None def __init__(self, group=None, target=None, name=None, args=(), kwargs={}): assert group is None, 'group argument must be None for now' count = _current_process._counter.next() self._identity = _current_process._identity + (count,) self._authkey = _current_process._authkey self._daemonic = _current_process._daemonic self._tempdir = _current_process._tempdir self._parent_pid = os.getpid() self._popen = None self._target = target self._args = tuple(args) self._kwargs = dict(kwargs) self._name = name or type(self).__name__ + '-' + \ ':'.join(str(i) for i in self._identity) def run(self): ''' Method to be run in sub-process; can be overridden in sub-class ''' if self._target: self._target(*self._args, **self._kwargs) def start(self): ''' Start child process ''' assert self._popen is None, 'cannot start a process twice' assert self._parent_pid == os.getpid(), \ 'can only start a process object created by current process' assert not _current_process._daemonic, \ 'daemonic processes are not allowed to have children' _cleanup() if self._Popen is not None: Popen = self._Popen else: from .forking import Popen self._popen = Popen(self) _current_process._children.add(self) def terminate(self): ''' Terminate process; sends SIGTERM signal or uses TerminateProcess() ''' self._popen.terminate() def join(self, timeout=None): ''' Wait until child process terminates ''' assert self._parent_pid == os.getpid(), 'can only join a child process' assert self._popen is not None, 'can only join a started process' res = self._popen.wait(timeout) if res is not None: _current_process._children.discard(self) def is_alive(self): ''' Return whether process is alive ''' if self is _current_process: return True assert self._parent_pid == os.getpid(), 'can only test a child process' if self._popen is None: return False self._popen.poll() return self._popen.returncode is None @property def name(self): return self._name @name.setter def name(self, name): assert isinstance(name, basestring), 'name must be a string' self._name = name @property def daemon(self): ''' Return whether process is a daemon ''' return self._daemonic @daemon.setter def daemon(self, daemonic): ''' Set whether process is a daemon ''' assert self._popen is None, 'process has already started' self._daemonic = daemonic @property def authkey(self): return self._authkey @authkey.setter def authkey(self, authkey): ''' Set authorization key of process ''' self._authkey = AuthenticationString(authkey) @property def exitcode(self): ''' Return exit code of process or `None` if it has yet to stop ''' if self._popen is None: return self._popen return self._popen.poll() @property def ident(self): ''' Return identifier (PID) of process or `None` if it has yet to start ''' if self is _current_process: return os.getpid() else: return self._popen and self._popen.pid pid = ident def __repr__(self): if self is _current_process: status = 'started' elif self._parent_pid != os.getpid(): status = 'unknown' elif self._popen is None: status = 'initial' else: if self._popen.poll() is not None: status = self.exitcode else: status = 'started' if type(status) is int: if status == 0: status = 'stopped' else: status = 'stopped[%s]' % _exitcode_to_name.get(status, status) return '<%s(%s, %s%s)>' % (type(self).__name__, self._name, status, self._daemonic and ' daemon' or '') ## def _bootstrap(self): from . import util global _current_process try: self._children = set() self._counter = itertools.count(1) try: sys.stdin.close() sys.stdin = open(os.devnull) except (OSError, ValueError): pass _current_process = self util._finalizer_registry.clear() util._run_after_forkers() util.info('child process calling self.run()') try: self.run() exitcode = 0 finally: util._exit_function() except SystemExit, e: if not e.args: exitcode = 1 elif isinstance(e.args[0], int): exitcode = e.args[0] else: sys.stderr.write(str(e.args[0]) + '\n') sys.stderr.flush() exitcode = 1 except: exitcode = 1 import traceback sys.stderr.write('Process %s:\n' % self.name) sys.stderr.flush() traceback.print_exc() util.info('process exiting with exitcode %d' % exitcode) return exitcode # # We subclass bytes to avoid accidental transmission of auth keys over network # class AuthenticationString(bytes): def __reduce__(self): from .forking import Popen if not Popen.thread_is_spawning(): raise TypeError( 'Pickling an AuthenticationString object is ' 'disallowed for security reasons' ) return AuthenticationString, (bytes(self),) # # Create object representing the main process # class _MainProcess(Process): def __init__(self): self._identity = () self._daemonic = False self._name = 'MainProcess' self._parent_pid = None self._popen = None self._counter = itertools.count(1) self._children = set() self._authkey = AuthenticationString(os.urandom(32)) self._tempdir = None _current_process = _MainProcess() del _MainProcess # # Give names to some return codes # _exitcode_to_name = {} for name, signum in signal.__dict__.items(): if name[:3]=='SIG' and '_' not in name: _exitcode_to_name[-signum] = name
.
25 Items
Change directory
Remove directory
Rename directory
..
442 Items
Change directory
Remove directory
Rename directory
__init__.py
7.62 KB
Edit
Delete
Copy
Move
Remame
__init__.pyc
8.22 KB
Edit
Delete
Copy
Move
Remame
connection.py
14.37 KB
Edit
Delete
Copy
Move
Remame
connection.pyc
13.98 KB
Edit
Delete
Copy
Move
Remame
dummy
4 Items
Change directory
Remove directory
Rename directory
forking.py
16.68 KB
Edit
Delete
Copy
Move
Remame
forking.pyc
14.01 KB
Edit
Delete
Copy
Move
Remame
heap.py
8.38 KB
Edit
Delete
Copy
Move
Remame
heap.pyc
6.71 KB
Edit
Delete
Copy
Move
Remame
managers.py
35.78 KB
Edit
Delete
Copy
Move
Remame
managers.pyc
37.23 KB
Edit
Delete
Copy
Move
Remame
pool.py
23.44 KB
Edit
Delete
Copy
Move
Remame
pool.pyc
21.85 KB
Edit
Delete
Copy
Move
Remame
process.py
9.15 KB
Edit
Delete
Copy
Move
Remame
process.pyc
9.22 KB
Edit
Delete
Copy
Move
Remame
queues.py
12.04 KB
Edit
Delete
Copy
Move
Remame
queues.pyc
11.21 KB
Edit
Delete
Copy
Move
Remame
reduction.py
6.43 KB
Edit
Delete
Copy
Move
Remame
reduction.pyc
5.84 KB
Edit
Delete
Copy
Move
Remame
sharedctypes.py
7.57 KB
Edit
Delete
Copy
Move
Remame
sharedctypes.pyc
8.38 KB
Edit
Delete
Copy
Move
Remame
synchronize.py
10.4 KB
Edit
Delete
Copy
Move
Remame
synchronize.pyc
10.69 KB
Edit
Delete
Copy
Move
Remame
util.py
10.61 KB
Edit
Delete
Copy
Move
Remame
util.pyc
9.84 KB
Edit
Delete
Copy
Move
Remame