def _bootstrap(self):
from multiprocessing 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:
pass
# 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
def set_shared(self, params, tasks, force=False):
"""Configures the mandatory shared resources.
Updates `params`. Places tasks in `taskq`.
Args:
params (dict): Parameters.
tasks (dict): Tasks.
Keyword Args:
force (bool): Forces task into `taskq`, regardless of whether it is already complete.
"""
# Create a client that will the set the actual resource data.
params["save"] = self.save
client = SCManager(user=self.user, address=self.address,
authkey=self.authkey)
client.connect()
# Update params.
client.params().update(params)
# Update tasks.
taskq = client.taskq()
for task in tasks.itervalues():
if force or not task.get("complete", False):
taskq.put(task)
util.info("[Server] Shared data successfully created.")
del client
def _send_result(local, remote, retries):
"""Send a task's result file to remote location.
Args:
local (str): Path of local file.
remote (str): Path of remote file.
retries (int): Number of retries to perform.
Return:
(bool): Indicates whether send was successful.
"""
send_str = "{} (local) > {} (remote)".format(local, remote)
sent_pths = ()
for r in xrange(retries):
sent_pths = ssh.put(local, remote)
if sent_pths.succeeded and remote in sent_pths:
sent = True
break
else:
msg = "[Client] {}/{} failed send retries ({}){{}}".format(
r + 1, retries, send_str)
if r + 1 < retries:
util.info(msg.format(", retrying..."))
else:
util.info(msg.format(", exiting."))
else:
sent = False
# sys.exit(0) # raise NetworkError(msg.format("."))
return sent
def bootstrap_2_6_6(self):
"""Pulled from python 2.6.6. Needed to ensure we have the fix from
http://bugs.python.org/issue5313 when running on python version 2.6.2
or lower."""
try:
self._children = set()
self._counter = itertools.count(1)
try:
sys.stdin.close()
sys.stdin = open(os.devnull)
except (OSError, ValueError):
pass
multiprocessing._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 type(e.args[0]) is int:
exitcode = e.args[0]
else:
sys.stderr.write(e.args[0] + "\n")
sys.stderr.flush()
exitcode = 1
def _after_fork(self):
self._manager = None
try:
self._incref()
except Exception, e:
# the proxy may just be for a manager which has shutdown
util.info('incref failed: %s' % e)
def _bootstrap(self):
from multiprocessing 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 type(e.args[0]) is int:
exitcode = e.args[0]
else:
sys.stderr.write(e.args[0] + '\n')
sys.stderr.flush()
exitcode = 1
def shutdown(self, c):
try:
try:
util.debug('manager received shutdown message')
c.send(('#RETURN', None))
if sys.stdout != sys.__stdout__:
util.debug('resetting stdout, stderr')
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
util._run_finalizers(0)
for p in active_children():
util.debug('terminating a child process of manager')
p.terminate()
for p in active_children():
util.debug('terminating a child process of manager')
p.join()
util._run_finalizers()
util.info('manager exiting with exitcode 0')
except:
import traceback
traceback.print_exc()
finally:
exit(0)
return
def shutdown(self, c):
'''
Shutdown this process
'''
try:
try:
util.debug('manager received shutdown message')
c.send(('#RETURN', None))
if sys.stdout != sys.__stdout__:
util.debug('resetting stdout, stderr')
sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__
util._run_finalizers(0)
for p in active_children():
util.debug('terminating a child process of manager')
p.terminate()
for p in active_children():
util.debug('terminating a child process of manager')
p.join()
util._run_finalizers()
util.info('manager exiting with exitcode 0')
except:
import traceback
traceback.print_exc()
finally:
exit(0)
def _after_fork(self):
self._manager = None
try:
self._incref()
except Exception as e:
# the proxy may just be for a manager which has shutdown
util.info('incref failed: %s' % e)
def _feed(buffer, notempty, send_bytes, writelock, close, ignore_epipe,
queue_sem):
while True:
try:
with notempty:
if not buffer:
notempty.wait()
try:
while True:
obj = buffer.popleft()
if obj is _sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
obj = ForkingPickler.dumps(obj)
if sys.platform == 'win32':
send_bytes(obj)
else:
with writelock:
send_bytes(obj)
except IndexError: # 当buffer为空时popleft会抛出异常
pass
except Exception as e:
if ignore_epipe and getattr(e, 'errno', 0) == errno.EPIPE:
return
# Since this runs in a daemon thread the resources it uses may be become unusable while the process is cleaning up.
# We ignore errors which happen after the process has started to cleanup.
if is_exiting():
info('error in queue thread: %s', e)
return
else:
# Since the object has not been sent in the queue, we need to decrease the size of the queue.
# The error acts as if the object had been silently removed from the queue and this step is necessary to have a properly working queue.
queue_sem.release()
traceback.print_exc()
def _feed(buffer, notempty, send, writelock, close, ignore_epipe):
debug('starting thread to feed data to pipe')
from .util import is_exiting
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
if sys.platform != 'win32':
wacquire = writelock.acquire
wrelease = writelock.release
else:
wacquire = None
try:
while 1:
nacquire()
try:
if not buffer:
nwait()
finally:
nrelease()
try:
while 1:
obj = bpopleft()
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
send(obj)
# Delete references to object. See issue16284
del obj
else:
wacquire()
try:
send(obj)
# Delete references to object. See issue16284
del obj
finally:
wrelease()
except IndexError:
pass
except Exception as e:
if ignore_epipe and getattr(e, 'errno', 0) == errno.EPIPE:
return
# Since this runs in a daemon thread the resources it uses
# may be become unusable while the process is cleaning up.
# We ignore errors which happen after the process has
# started to cleanup.
try:
if is_exiting():
info('error in queue thread: %s', e)
else:
import traceback
traceback.print_exc()
except Exception:
pass
def _after_fork(self):
self._manager = None
try:
self._incref()
except Exception as e:
util.info('incref failed: %s' % e)
return
def _run_server(cls, registry, address, authkey, serializer, writer, initializer = None, initargs = ()):
if initializer is not None:
initializer(*initargs)
server = cls._Server(registry, address, authkey, serializer)
writer.send(server.address)
writer.close()
util.info('manager serving at %r', server.address)
server.serve_forever()
def _after_fork(self):
self._manager = None
try:
self._incref()
except Exception as e:
util.info('incref failed: %s' % e)
return
def _feed(buffer, notempty, send_bytes, writelock, close, reducers,
ignore_epipe, onerror, queue_sem):
util.debug('starting thread to feed data to pipe')
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
if sys.platform != 'win32':
wacquire = writelock.acquire
wrelease = writelock.release
else:
wacquire = None
while 1:
try:
nacquire()
try:
if not buffer:
nwait()
finally:
nrelease()
try:
while 1:
obj = bpopleft()
if obj is sentinel:
util.debug('feeder thread got sentinel -- exiting')
close()
return
# serialize the data before acquiring the lock
obj_ = CustomizableLokyPickler.dumps(
obj, reducers=reducers)
if wacquire is None:
send_bytes(obj_)
else:
wacquire()
try:
send_bytes(obj_)
finally:
wrelease()
# Remove references early to avoid leaking memory
del obj, obj_
except IndexError:
pass
except BaseException as e:
if ignore_epipe and getattr(e, 'errno', 0) == errno.EPIPE:
return
# Since this runs in a daemon thread the resources it uses
# may be become unusable while the process is cleaning up.
# We ignore errors which happen after the process has
# started to cleanup.
if util.is_exiting():
util.info('error in queue thread: %s', e)
return
else:
queue_sem.release()
onerror(e, obj)
def _feed(buffer, notempty, send, writelock, close, ignore_epipe):
debug('starting thread to feed data to pipe')
from .util import is_exiting
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
if sys.platform != 'win32':
wacquire = writelock.acquire
wrelease = writelock.release
else:
wacquire = None
try:
while 1:
nacquire()
try:
if not buffer:
nwait()
finally:
nrelease()
try:
while 1:
obj = bpopleft()
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
send(obj)
else:
wacquire()
try:
send(obj)
finally:
wrelease()
except IndexError:
pass
except Exception as e:
if ignore_epipe and getattr(e, 'errno', 0) == errno.EPIPE:
return
# Since this runs in a daemon thread the resources it uses
# may be become unusable while the process is cleaning up.
# We ignore errors which happen after the process has
# started to cleanup.
try:
if is_exiting():
info('error in queue thread: %s', e)
else:
import traceback
traceback.print_exc()
except Exception:
pass
def _run_server(cls, registry, address, authkey, serializer, writer, initializer = None, initargs = ()):
"""
Create a server, report its address and run it
"""
if initializer is not None:
initializer(*initargs)
server = cls._Server(registry, address, authkey, serializer)
writer.send(server.address)
writer.close()
util.info('manager serving at %r', server.address)
server.serve_forever()
return
def _feed(buffer, notempty, send, writelock, close):
debug('starting thread to feed data to pipe')
from .util import is_exiting
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
if sys.platform != 'win32':
wacquire = writelock.acquire
wrelease = writelock.release
else:
wacquire = None
try:
while 1:
nacquire()
try:
if not buffer:
nwait()
finally:
nrelease()
try:
while 1:
obj = bpopleft()
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
send(obj)
else:
wacquire()
try:
send(obj)
finally:
wrelease()
except IndexError:
pass
except Exception as e:
try:
if is_exiting():
info('error in queue thread: %s', e)
else:
import traceback
traceback.print_exc()
except Exception:
pass
return
def _feed(buffer, notempty, send, writelock, close):
debug('starting thread to feed data to pipe')
from .util import is_exiting
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
if sys.platform != 'win32':
wacquire = writelock.acquire
wrelease = writelock.release
else:
wacquire = None
try:
while 1:
nacquire()
try:
if not buffer:
nwait()
finally:
nrelease()
try:
while 1:
obj = bpopleft()
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
send(obj)
else:
wacquire()
try:
send(obj)
finally:
wrelease()
except IndexError:
pass
except Exception as e:
try:
if is_exiting():
info('error in queue thread: %s', e)
else:
import traceback
traceback.print_exc()
except Exception:
pass
return
def _finalize_manager(process, address, authkey, state, _Client):
'''
Shutdown the manager process; will be registered as a finalizer
'''
if process.is_alive():
util.info('sending shutdown message to manager')
try:
conn = _Client(address, authkey=authkey)
try:
managers.dispatch(conn, None, 'shutdown')
finally:
conn.close()
except Exception:
pass
process.join(timeout=0.2)
if process.is_alive():
util.info('manager still alive')
if hasattr(process, 'terminate'):
util.info('trying to `terminate()` manager process')
try:
process.terminate()
process.join(timeout=0.1)
# XXX: catch the OS error ... something weird is going on here..
except OSError:
pass
if process.is_alive():
util.info('manager still alive after terminate')
state.value = managers.State.SHUTDOWN
try:
del managers.BaseProxy._address_to_local[address]
except KeyError:
pass
def _run_server(cls, registry, address, authkey, serializer, writer,
conn_writer, initializer=None, initargs=()):
""" Create a server, report its address and run it."""
if initializer is not None:
initializer(*initargs)
# Create server.
server = cls._Server(registry, fqaddr(address), authkey, serializer,
conn_writer)
# Inform parent process of the server's address.
writer.send(server.address)
writer.close()
# Run the manager.
util.info("Server running at {}:{}.".format(*server.address))
server.serve_forever()
def _finalize_manager(process, address, authkey, state, conns, _Client):
""" Shutdown the manager process; will be registered as a
finalizer."""
if process.is_alive():
util.info("Sending shutdown message to manager.")
try:
conn = _Client(fqaddr(address), authkey=authkey)
try:
dispatch(conn, None, "shutdown")
finally:
conn.close()
except Exception:
pass
for conn in conns:
conn.close()
process.join(timeout=0.2)
if process.is_alive():
util.info("Manager still alive.")
if hasattr(process, "terminate"):
util.info("Trying to `terminate()` manager process.")
process.terminate()
process.join(timeout=0.1)
if process.is_alive():
util.info("Manager still alive after terminate.")
state.value = State.SHUTDOWN
try:
del BaseProxy._address_to_local[fqaddr(address)]
except KeyError:
pass
def _finalize_manager(process, address, authkey, state, _Client):
'''
Shutdown the manager process; will be registered as a finalizer
'''
if process.is_alive():
util.info('sending shutdown message to manager')
try:
conn = _Client(address, authkey=authkey)
try:
managers.dispatch(conn, None, 'shutdown')
finally:
conn.close()
except Exception:
pass
process.join(timeout=0.2)
if process.is_alive():
util.info('manager still alive')
if hasattr(process, 'terminate'):
util.info('trying to `terminate()` manager process')
try:
process.terminate()
process.join(timeout=0.1)
# XXX: catch the OS error ... something weird is going on here..
except OSError:
pass
if process.is_alive():
util.info('manager still alive after terminate')
state.value = managers.State.SHUTDOWN
try:
del managers.BaseProxy._address_to_local[address]
except KeyError:
pass
def _finalize_manager(process, address, authkey, state, _Client):
if process.is_alive():
util.info('sending shutdown message to manager')
try:
conn = _Client(address, authkey=authkey)
try:
dispatch(conn, None, 'shutdown')
finally:
conn.close()
except Exception:
pass
process.join(timeout=0.2)
if process.is_alive():
util.info('manager still alive')
if hasattr(process, 'terminate'):
util.info('trying to `terminate()` manager process')
process.terminate()
process.join(timeout=0.1)
if process.is_alive():
util.info('manager still alive after terminate')
state.value = State.SHUTDOWN
try:
del BaseProxy._address_to_local[address]
except KeyError:
pass
def _run_server(cls, registry, address, authkey, serializer, writer):
'''
Create a server, report its address and run it
'''
# create server
server = cls._Server(registry, address, authkey, serializer)
# inform parent process of the server's address
writer.send(server.address)
writer.close()
# run the manager
util.info('manager serving at %r', server.address)
server.serve_forever()
def _finalize_manager(process, address, authkey, state, _Client):
if process.is_alive():
util.info('sending shutdown message to manager')
try:
conn = _Client(address, authkey=authkey)
try:
dispatch(conn, None, 'shutdown')
finally:
conn.close()
except Exception:
pass
process.join(timeout=0.2)
if process.is_alive():
util.info('manager still alive')
if hasattr(process, 'terminate'):
util.info('trying to `terminate()` manager process')
process.terminate()
process.join(timeout=0.1)
if process.is_alive():
util.info('manager still alive after terminate')
state.value = State.SHUTDOWN
try:
del BaseProxy._address_to_local[address]
except KeyError:
pass
return
def _worker_process(self, finish, job, taskq, doneq, max_run_retries=3,
max_send_retries=10):
"""Run a set of jobs."""
job.setup()
run_retries = 0
exitcode = 0
# Loop over tasks.
while not taskq.empty():
# Pop task off queue.
task = taskq.get()
success = False
T0 = Time.time()
try:
progress, tmp_fid = job.run(task)
except EOFError as err:
# Report what went wrong and retry.
util.debug("[Client] {}".format(err.msg))
msg = "[Client] {}/{} failed run retries, {{}}".format(
run_retries, max_run_retries)
if run_retries < max_run_retries:
run_retries += 1
util.debug(msg.format("retrying..."))
else:
util.debug(msg.format("exiting."))
raise err
else:
# Send results.
sent = send_result(tmp_fid, task, retries=max_send_retries)
if sent or not self.save:
# Mark simulation as complete.
task["complete"] = True
# Task is done.
doneq.put(task)
success = True
# Report progress.
progress.task = (taskq.qsize(), T0.delta())
progress.report()
finally:
if not success:
# Task did not complete successfully: put it back in taskq.
taskq.put(task)
taskq.task_done()
exitcode = 0
if finish.is_set():
exitcode = 100
break
job.teardown()
util.info("[Client] Process complete: {}.".format(ProcLabel()))
sys.exit(exitcode)
def _global_after_fork():
# Previously every app would call:
# `register_after_fork(app, app._after_fork)`
# but this created a leak as `register_after_fork` stores concrete object
# references and once registered an object cannot be removed without
# touching and iterating over the private afterfork registry list.
#
# See Issue #1949
from celery import _state
from multiprocessing.util import info
for app in _state.apps:
try:
app._after_fork()
except Exception as exc:
info('after forker raised exception: %r' % (exc, ), exc_info=1)
def _global_after_fork():
# Previously every app would call:
# `register_after_fork(app, app._after_fork)`
# but this created a leak as `register_after_fork` stores concrete object
# references and once registered an object cannot be removed without
# touching and iterating over the private afterfork registry list.
#
# See Issue #1949
from celery import _state
from multiprocessing.util import info
for app in _state.apps:
try:
app._after_fork()
except Exception as exc:
info('after forker raised exception: %r' % (exc, ), exc_info=1)
def _feed(buffer, notempty, send, writelock, close):
debug('starting thread to feed data to pipe')
from .util import is_exiting
nacquire = notempty.acquire
nrelease = notempty.release
nwait = notempty.wait
bpopleft = buffer.popleft
sentinel = _sentinel
wacquire = writelock.acquire
wrelease = writelock.release
try:
while 1:
try:
while 1:
obj = bpopleft()
if obj is sentinel:
debug('feeder thread got sentinel -- exiting')
close()
return
if wacquire is None:
send(obj)
else:
wacquire()
try:
send(obj)
finally:
wrelease()
except IndexError:
pass
yield "Done for now"
except Exception as e:
# Since this runs in a daemon thread the resources it uses
# may be become unusable while the process is cleaning up.
# We ignore errors which happen after the process has
# started to cleanup.
try:
if is_exiting():
info('error in queue thread: %s', e)
else:
import traceback
traceback.print_exc()
except Exception:
pass
def _malloc(self, size):
i = bisect.bisect_left(self._lengths, size)
if i == len(self._lengths):
length = self._roundup(max(self._size, size), mmap.PAGESIZE)
self._size *= 2
info('allocating a new mmap of length %d', length)
arena = Arena(length)
self._arenas.append(arena)
return (arena, 0, length)
length = self._lengths[i]
seq = self._len_to_seq[length]
block = seq.pop()
if not seq:
del self._len_to_seq[length]
del self._lengths[i]
arena, start, stop = block
del self._start_to_block[arena, start]
del self._stop_to_block[arena, stop]
return block
def get_shared(self):
"""Get shared data from server.
Return:
(tuple: dict, multiprocessing.JoinableQueue,
multiprocessing.Queue, multiprocessing.JoinableQueue):
Parameters, shared queue for tasks, shared queue for done
tasks, shared queue for active connections.
"""
params = self.params()
self.Job = params["Job"]
taskq = self.taskq()
doneq = self.doneq()
activeq = self.activeq()
util.info("[Client] Received shared data.")
# Notify the server that this client is active.
activeq.put(self.host)
return params, taskq, doneq, activeq
def _malloc(self, size):
i = bisect.bisect_left(self._lengths, size)
if i == len(self._lengths):
length = self._roundup(max(self._size, size), mmap.PAGESIZE)
self._size *= 2
info('allocating a new mmap of length %d', length)
arena = Arena(length)
self._arenas.append(arena)
return (arena, 0, length)
length = self._lengths[i]
seq = self._len_to_seq[length]
block = seq.pop()
if not seq:
del self._len_to_seq[length]
del self._lengths[i]
arena, start, stop = block
del self._start_to_block[arena, start]
del self._stop_to_block[arena, stop]
return block
def start(self, params, tasks, force=False):
"""Start server.
Args:
params (dict): Parameters.
tasks (dict): Tasks.
Keyword Args:
force (bool): Forces task into `taskq`, regardless of whether
it is already complete.
"""
super(ServerManager, self).start()
self.set_shared(params, tasks, force=force)
# Monitor the tasks and update the tasks file as completed tasks
# arrive from the clients.
self.manage_tasks(tasks)
self.shutdown()
util.info("[Server] Jobs complete. Shutting down.")
sys.exit(0)
def _malloc(self, size):
# returns a large enough block -- it might be much larger
i = bisect.bisect_left(self._lengths, size)
if i == len(self._lengths):
length = self._roundup(max(self._size, size), mmap.PAGESIZE)
self._size *= 2
info('allocating a new mmap of length %d', length)
arena = Arena(length)
self._arenas.append(arena)
return (arena, 0, length)
else:
length = self._lengths[i]
seq = self._len_to_seq[length]
block = seq.pop()
if not seq:
del self._len_to_seq[length], self._lengths[i]
(arena, start, stop) = block
del self._start_to_block[(arena, start)]
del self._stop_to_block[(arena, stop)]
return block
def _malloc(self, size):
# returns a large enough block -- it might be much larger
i = bisect.bisect_left(self._lengths, size)
if i == len(self._lengths):
length = self._roundup(max(self._size, size), mmap.PAGESIZE)
self._size *= 2
info('allocating a new mmap of length %d', length)
arena = Arena(length)
self._arenas.append(arena)
return (arena, 0, length)
else:
length = self._lengths[i]
seq = self._len_to_seq[length]
block = seq.pop()
if not seq:
del self._len_to_seq[length], self._lengths[i]
(arena, start, stop) = block
del self._start_to_block[(arena, start)]
del self._stop_to_block[(arena, stop)]
return block
def _spawn(self, finish, params, taskq, doneq, args, kwargs):
"""Spawn a job process.
Args:
finish (multiprocessing.Event): Signals that process is finished.
params (dict): Parameters.
taskq (multiprocessing.JoinableQueue): Shared queue for tasks.
doneq (multiprocessing.Queue): Shared queue for done tasks.
args (tuple): Arguments for ``_worker_process``.
kwargs (dict): Keyword arguments for ``_worker_process``.
Return:
(multiprocessing.Process): Worker process.
"""
# Initialize the job.
job = self.Job(params, *args, **kwargs)
proc = Process(target=self._worker_process,
args=(finish, job, taskq, doneq))
util.info("[Client] Spawning process: '{}'".format(proc.name))
return proc
def handle_request(self, c):
funcname = result = request = None
try:
connection.deliver_challenge(c, self.authkey)
connection.answer_challenge(c, self.authkey)
request = c.recv()
ignore, funcname, args, kwds = request
assert funcname in self.public, '%r unrecognized' % funcname
func = getattr(self, funcname)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
try:
result = func(c, *args, **kwds)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
msg = ('#RETURN', result)
try:
c.send(msg)
except Exception as e:
try:
c.send(('#TRACEBACK', format_exc()))
except Exception:
pass
util.info('Failure to send message: %r', msg)
util.info(' ... request was %r', request)
util.info(' ... exception was %r', e)
c.close()
def report(self):
""" Outputs formatted progress text."""
util.info("\n")
if self.task:
util.info(self.task)
if self.msg:
util.info(self.msg)
def bootstrap_2_6_6(self):
"""Pulled from python 2.6.6. Needed to ensure we have the fix from
http://bugs.python.org/issue5313 when running on python version 2.6.2
or lower."""
try:
self._children = set()
self._counter = itertools.count(1)
try:
sys.stdin.close()
sys.stdin = open(os.devnull)
except (OSError, ValueError):
pass
multiprocessing._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 as e:
if not e.args:
exitcode = 1
elif type(e.args[0]) is int:
exitcode = e.args[0]
else:
sys.stderr.write(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
def handle_request(self, c):
funcname = result = request = None
try:
connection.deliver_challenge(c, self.authkey)
connection.answer_challenge(c, self.authkey)
request = c.recv()
ignore, funcname, args, kwds = request
func = getattr(self, funcname)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
try:
result = func(c, *args, **kwds)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
msg = ('#RETURN', result)
try:
c.send(msg)
except Exception as e:
try:
c.send(('#TRACEBACK', format_exc()))
except Exception:
pass
util.info('Failure to send message: %r', msg)
util.info(' ... request was %r', request)
util.info(' ... exception was %r', e)
c.close()
return
def handle_request(self, c):
'''
Handle a new connection
'''
funcname = result = request = None
try:
connection.deliver_challenge(c, self.authkey)
connection.answer_challenge(c, self.authkey)
request = c.recv()
ignore, funcname, args, kwds = request
assert funcname in self.public, '%r unrecognized' % funcname
func = getattr(self, funcname)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
try:
result = func(c, *args, **kwds)
except Exception:
msg = ('#TRACEBACK', format_exc())
else:
msg = ('#RETURN', result)
try:
c.send(msg)
except Exception, e:
try:
c.send(('#TRACEBACK', format_exc()))
except Exception:
pass
util.info('Failure to send message: %r', msg)
util.info(' ... request was %r', request)
util.info(' ... exception was %r', e)
def start(self, n_procs=None, args=(), kwargs={}, timeout=1e5):
""" Start the client.
Keyword Args:
n_procs (int): Number of processes to run.
args (tuple): Arguments for ``_worker_process``.
kwargs (dict): Keyword arguments for ``_worker_process``.
timeout (float): Time to run process before signaling that it
be restarted. This circumvents memory leaks.
"""
if n_procs is None:
n_procs = cpu_count()
self.connect()
params, taskq, doneq, activeq = self.get_shared()
kwargs["save"] = params.pop("save", False)
if kwargs["save"]:
setup_send(self.user, self.address[0])
# Arguments for each thread's worker.
worker_args = (params, taskq, doneq, args, kwargs)
worker_kwargs = dict(timeout=timeout)
threads = []
# Control each process with a Thread that can time itself.
util.info("[Client] Starting processes...")
for iproc in xrange(n_procs):
name = "Thread_{:02d}".format(iproc)
thread = Thread(name=name, target=self._worker_thread,
args=worker_args, kwargs=worker_kwargs)
threads.append(thread)
thread.start()
thread.join(timeout=0.2)
# Wait until all threads have completed.
for thread in threads:
thread.join()
# Notifies the server that this client is done.
activeq.task_done()
util.info("[Client] Jobs complete.")
sys.exit(0)
def manage_tasks(self, tasks):
"""Receives completed tasks from the clients and updates the
tasks file.
Args:
tasks (dict): Tasks.
"""
t0 = Time.time()
tasks_pth = path(self.params().get("tasks_pth", ""))
n_tasks = len(tasks)
n_done0 = n_tasks - self.taskq().qsize()
n_done = n_done0
util.info("[Server] Tasks queued. {}/{} ({:.1f}%%) complete.".format(
n_done, n_tasks, n_done / n_tasks * 100))
save_time = Time.time()
# Set up a thread that joins self.taskq and only returns once
# all the tasks have completed. The while loops continues as
# long as taskq_thread is alive.
taskq_thread = Thread(name="taskq", target=self._taskq_worker,
args=(self.taskq,))
taskq_thread.start()
while taskq_thread.is_alive():
# Wait for a done task to arrive.
task = self.doneq().get()
# Update the master tasks dict.
task_name = task["task_name"]
tasks[task_name].update(task)
if tasks_pth and save_time.delta() > 10.:
# Save task to disk.
update_tasks_file(tasks_pth, tasks, overwrite=True)
save_time = Time.time()
# Report progress.
n_done += 1
percent = float(n_done) / n_tasks * 100.
dt = t0.delta()
time_per_task = dt / float(n_done - n_done0)
n_left = n_tasks - n_done
t_left = Time(time_per_task * n_left)
util.info("[Server] Task `{}` complete:\n\t\t {}/{} ({:.2f}%) {} "
"\n\t\t Time left: {}.".format(
task_name, n_done, n_tasks, percent, dt, t_left))
# Save tasks to disk one last time.
update_tasks_file(tasks_pth, tasks, overwrite=True)
# Wait for the clients to d/c.
clients = []
while not self.activeq().empty():
clients.append(self.activeq().get())
util.debug("[Server] Waiting for clients to disconnect:\n\t{}.".format(
"\n\t".join(clients)))
self.activeq().join()
time.sleep(0.5)
self.activeq().close()
self.taskq().close()
self.doneq().close()
util.info("[Server] Tasks completed.")
def serve_client(self, conn):
util.debug('starting server thread to service %r', threading.current_thread().name)
recv = conn.recv
send = conn.send
id_to_obj = self.id_to_obj
while not self.stop:
try:
methodname = obj = None
request = recv()
ident, methodname, args, kwds = request
obj, exposed, gettypeid = id_to_obj[ident]
if methodname not in exposed:
raise AttributeError('method %r of %r object is not in exposed=%r' % (methodname, type(obj), exposed))
function = getattr(obj, methodname)
try:
res = function(*args, **kwds)
except Exception as e:
msg = ('#ERROR', e)
else:
typeid = gettypeid and gettypeid.get(methodname, None)
if typeid:
rident, rexposed = self.create(conn, typeid, res)
token = Token(typeid, self.address, rident)
msg = ('#PROXY', (rexposed, token))
else:
msg = ('#RETURN', res)
except AttributeError:
if methodname is None:
msg = ('#TRACEBACK', format_exc())
else:
try:
fallback_func = self.fallback_mapping[methodname]
result = fallback_func(self, conn, ident, obj, *args, **kwds)
msg = ('#RETURN', result)
except Exception:
msg = ('#TRACEBACK', format_exc())
except EOFError:
util.debug('got EOF -- exiting thread serving %r', threading.current_thread().name)
sys.exit(0)
except Exception:
msg = ('#TRACEBACK', format_exc())
try:
try:
send(msg)
except Exception as e:
send(('#UNSERIALIZABLE', repr(msg)))
except Exception as e:
util.info('exception in thread serving %r', threading.current_thread().name)
util.info(' ... message was %r', msg)
util.info(' ... exception was %r', e)
conn.close()
sys.exit(1)
def _worker_thread(self, params, taskq, doneq, args, kwargs, timeout=1e5):
"""Target function to be run in a thread, which manages the job
process.
Args:
params (dict): Parameters.
taskq (multiprocessing.JoinableQueue): Shared queue for tasks.
doneq (multiprocessing.Queue): Shared queue for done tasks.
args (tuple): Arguments for ``_worker_process``.
kwargs (dict): Keyword arguments for ``_worker_process``.
Keyword Args:
timeout (float): Time to run process before signaling that it
be restarted. This circumvents memory leaks.
"""
util.info("[Client] Starting thread: {}.".format(current_thread()))
finish = Event()
# Loop until taskq is empty.
while True:
try:
if taskq.empty():
break
except (EOFError, IOError):
break
finish.clear()
# Spawn a process.
proc = self._spawn(finish, params, taskq, doneq, args, kwargs)
proc.start()
# Wait for timeout (or until the proc finishes), then
# signal it to finish and wait until it returns.
proc.join(timeout=timeout)
finish.set()
proc.join()
# Check that the exit was not an error.
if proc.exitcode == 100:
util.info("[Client] Process killed, restarting.")
elif proc.exitcode > 0:
raise ProcError(proc)
util.info("[Client] Ending thread: {}.".format(current_thread()))
sys.exit(0)
if not e.args:
exitcode = 1
elif type(e.args[0]) is int:
exitcode = e.args[0]
else:
sys.stderr.write(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 multiprocessing.forking import Popen
if not Popen.thread_is_spawning():
raise TypeError('Pickling an AuthenticationString object is '
'disallowed for security reasons')
return AuthenticationString, (bytes(self), )
except EOFError:
util.debug('got EOF -- exiting thread serving %r',
threading.current_thread().name)
sys.exit(0)
except Exception:
msg = ('#TRACEBACK', format_exc())
try:
try:
send(msg)
except Exception, e:
send(('#UNSERIALIZABLE', repr(msg)))
except Exception, e:
util.info('exception in thread serving %r',
threading.current_thread().name)
util.info(' ... message was %r', msg)
util.info(' ... exception was %r', e)
conn.close()
sys.exit(1)
def fallback_getvalue(self, conn, ident, obj):
return obj
def fallback_str(self, conn, ident, obj):
return str(obj)
def fallback_repr(self, conn, ident, obj):
return repr(obj)
fallback_mapping = {
def serve_client(self, conn):
util.debug('starting server thread to service %r',
threading.current_thread().name)
recv = conn.recv
send = conn.send
id_to_obj = self.id_to_obj
while not self.stop:
try:
methodname = obj = None
request = recv()
ident, methodname, args, kwds = request
obj, exposed, gettypeid = id_to_obj[ident]
if methodname not in exposed:
raise AttributeError(
'method %r of %r object is not in exposed=%r' %
(methodname, type(obj), exposed))
function = getattr(obj, methodname)
try:
res = function(*args, **kwds)
except Exception as e:
msg = ('#ERROR', e)
else:
typeid = gettypeid and gettypeid.get(methodname, None)
if typeid:
rident, rexposed = self.create(conn, typeid, res)
token = Token(typeid, self.address, rident)
msg = ('#PROXY', (rexposed, token))
else:
msg = ('#RETURN', res)
except AttributeError:
if methodname is None:
msg = ('#TRACEBACK', format_exc())
else:
try:
fallback_func = self.fallback_mapping[methodname]
result = fallback_func(self, conn, ident, obj, *args,
**kwds)
msg = ('#RETURN', result)
except Exception:
msg = ('#TRACEBACK', format_exc())
except EOFError:
util.debug('got EOF -- exiting thread serving %r',
threading.current_thread().name)
sys.exit(0)
except Exception:
msg = ('#TRACEBACK', format_exc())
try:
try:
send(msg)
except Exception as e:
send(('#UNSERIALIZABLE', repr(msg)))
except Exception as e:
util.info('exception in thread serving %r',
threading.current_thread().name)
util.info(' ... message was %r', msg)
util.info(' ... exception was %r', e)
conn.close()
sys.exit(1)
return