Gecko [ gandhischool.edu.np ]

Name	Size	Permission
__pycache__	[ DIR ]	drwxr-xr-x
test	[ DIR ]	drwxr-xr-x
__init__.py	505 B	-rw-r--r--
_convenience.py	894 B	-rw-r--r--
_ithreads.py	1.7 KB	-rw-r--r--
_memory.py	1.56 KB	-rw-r--r--
_pool.py	2.21 KB	-rw-r--r--
_team.py	6.98 KB	-rw-r--r--
_threadworker.py	3.21 KB	-rw-r--r--

Code Editor : _memory.py

# -*- test-case-name: twisted._threads.test.test_memory -*-
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.

"""
Implementation of an in-memory worker that defers execution.
"""

from zope.interface import implementer

from . import IWorker
from ._convenience import Quit

NoMoreWork = object()

@implementer(IWorker)
class MemoryWorker:
    """
    An L{IWorker} that queues work for later performance.

@ivar _quit: a flag indicating
    @type _quit: L{Quit}
    """

def __init__(self, pending=list):
        """
        Create a L{MemoryWorker}.
        """
        self._quit = Quit()
        self._pending = pending()

def do(self, work):
        """
        Queue some work for to perform later; see L{createMemoryWorker}.

@param work: The work to perform.
        """
        self._quit.check()
        self._pending.append(work)

def quit(self):
        """
        Quit this worker.
        """
        self._quit.set()
        self._pending.append(NoMoreWork)

def createMemoryWorker():
    """
    Create an L{IWorker} that does nothing but defer work, to be performed
    later.

@return: a worker that will enqueue work to perform later, and a callable
        that will perform one element of that work.
    @rtype: 2-L{tuple} of (L{IWorker}, L{callable})
    """

def perform():
        if not worker._pending:
            return False
        if worker._pending[0] is NoMoreWork:
            return False
        worker._pending.pop(0)()
        return True

worker = MemoryWorker()
    return (worker, perform)

${this.title}

Code Editor : _memory.py