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Python Queue.join_thread方法代码示例

本文整理汇总了Python中multiprocessing.queues.Queue.join_thread方法的典型用法代码示例。如果您正苦于以下问题:Python Queue.join_thread方法的具体用法?Python Queue.join_thread怎么用?Python Queue.join_thread使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在multiprocessing.queues.Queue的用法示例。


在下文中一共展示了Queue.join_thread方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Python代码示例。

示例1: test_multiprocess_tasks

# 需要导入模块: from multiprocessing.queues import Queue [as 别名]
# 或者: from multiprocessing.queues.Queue import join_thread [as 别名]
def test_multiprocess_tasks():
    wait_until_convenient()
    TAG = "message_q"
    def fetch_task(queue):
        pid = os.getpid()
        count = 0
        for dq in q.listen(TAG, timeout=1):
            s = { 'pid': pid, 'data': dq }
            if dq:
                count += 1
                queue.put(s)
                sleep(uniform(0.1, 0.5)) # sleep 0.1~0.5 seconds randomly
            elif q.count(TAG) == 0:
                return count # the number of tasks done by this process


    test_items = range(0, 10000) # enqueue 10000 tasks
    for i in test_items:
        q.enqueue(TAG, i + 1)

    while q.count(TAG) != len(test_items): # wait until test data is ready
        wait_until_convenient()

    jobs = []
    wait_until_convenient()
    queue = Queue()
    start = timer()
    num_p = 30 # the number of processes to use
    for i in range(0, num_p):
        job = Process(target=fetch_task, args=(queue,))
        jobs.append(job)
        job.start() # start task process

    remaining = q.count(TAG)
    while remaining > 0: # wait until the queue is consumed completely
        remaining = q.count(TAG)
        sys.stdout.write('\rRunning test_multiprocess_tasks - remaining %5d/%5d' % (remaining, len(test_items),))
        sys.stdout.flush()
        wait_until_convenient()

    processed_data = set()
    qsize = 0
    while not queue.empty():
        item = queue.get()
        data = item.get('data')
        qsize += 1
        assert data not in processed_data, "failed test_multiprocess_tasks - data %s has been processed already" % (data, )
        processed_data.add(item.get('data'))

    queue.close()
    queue.join_thread()
    for j in jobs:
        j.join()

    assert qsize == len(test_items), "failed test_multiprocess_tasks - tasks are not complete %d/%d" % (qsize, len(test_items), )
    end = timer()
    print("\rOK test_multiprocess_tasks - %d done in %5d seconds" % (qsize, end - start))
开发者ID:smihica,项目名称:py-q4pg,代码行数:59,代码来源:test.py


注:本文中的multiprocessing.queues.Queue.join_thread方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。