celery.concurrency.base

Base Execution Pool.

classcelery.concurrency.base.BasePool(limit=None, putlocks=True, forking_enable=True, callbacks_propagate=(), app=None, **options)

Task pool.

CLOSE=2

RUN=1

TERMINATE=3

classTimer(schedule:Timer|None=None, on_error:Callable[[Exception],None]|None=None, on_tick:Callable[[float],None]|None=None, on_start:Callable[[Timer],None]|None=None, max_interval:float|None=None, **kwargs:Any)

Timer thread.

Note

This is only used for transports not supporting AsyncIO.

classEntry(fun, args=None, kwargs=None)

Schedule Entry.

args

cancel()

canceled

propertycancelled

fun

kwargs

tref

Schedule

alias of Timer

call_after(*args:Any, **kwargs:Any) → Entry

call_at(*args:Any, **kwargs:Any) → Entry

call_repeatedly(*args:Any, **kwargs:Any) → Entry

cancel(tref:Entry) → None

clear() → None

empty() → bool

ensure_started() → None

enter(entry:Entry, eta:float, priority:int|None=None) → Entry

enter_after(*args:Any, **kwargs:Any) → Entry

exit_after(secs:float, priority:int=10) → None

next() → float|None

on_tick:Callable[[float],None]|None=None

propertyqueue:list

run() → None

Method representing the thread’s activity.

You may override this method in a subclass. The standard run() method invokes the callable object passed to the object’s constructor as the target argument, if any, with sequential and keyword arguments taken from the args and kwargs arguments, respectively.

running:bool=False

stop() → None

propertyactive

apply_async(target, args=None, kwargs=None, **options)

Equivalent of the apply() built-in function.

Callbacks should optimally return as soon as possible since otherwise the thread which handles the result will get blocked.

body_can_be_buffer=False

close()

did_start_ok()

flush()

propertyinfo

is_green=False

set to true if pool uses greenlets.

maintain_pool(*args, **kwargs)

propertynum_processes

on_apply(*args, **kwargs)

on_close()

on_hard_timeout(job)

on_soft_timeout(job)

on_start()

on_stop()

on_terminate()

register_with_event_loop(loop)

restart()

signal_safe=True

set to true if the pool can be shutdown from within a signal handler.

start()

stop()

task_join_will_block=True

terminate()

terminate_job(pid, signal=None)

uses_semaphore=False

only used by multiprocessing pool

celery.concurrency.base.apply_target(target, args=(), kwargs=None, callback=None, accept_callback=None, pid=None, getpid=<built-in function getpid>, propagate=(), monotonic=<built-in function monotonic>, **_)

Apply function within pool context.