This document describes the current stable version of Celery (5.4). For development docs, go here.

Source code for celery.concurrency.solo

"""Single-threaded execution pool."""
import os

from celery import signals

from .base import BasePool, apply_target

__all__ = ('TaskPool',)

[docs] class TaskPool(BasePool): """Solo task pool (blocking, inline, fast).""" body_can_be_buffer = True def __init__(self, *args, **kwargs): super().__init__(*args, **kwargs) self.on_apply = apply_target self.limit = 1 signals.worker_process_init.send(sender=None) def _get_info(self): info = super()._get_info() info.update({ 'max-concurrency': 1, 'processes': [os.getpid()], 'max-tasks-per-child': None, 'put-guarded-by-semaphore': True, 'timeouts': (), }) return info