{"id":203791,"date":"2020-11-25T14:27:41","date_gmt":"2020-11-25T06:27:41","guid":{"rendered":"http:\/\/4563.org\/?p=203791"},"modified":"2020-11-25T14:27:41","modified_gmt":"2020-11-25T06:27:41","slug":"%e5%90%84%e4%bd%8d%e5%a4%a7%e4%bd%ac%ef%bc%8c%e5%b0%8f%e5%bc%9f%e4%bd%bf%e7%94%a8-gevent-%e9%81%87%e5%88%b0%e4%ba%86-loopexit-%e7%9a%84%e9%94%99%e8%af%af","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=203791","title":{"rendered":"\u5404\u4f4d\u5927\u4f6c\uff0c\u5c0f\u5f1f\u4f7f\u7528 gevent \u9047\u5230\u4e86 loopexit \u7684\u9519\u8bef"},"content":{"rendered":"<div>\n<div>\n<div>\n<h1>                  \u5404\u4f4d\u5927\u4f6c\uff0c\u5c0f\u5f1f\u4f7f\u7528 gevent \u9047\u5230\u4e86 loopexit \u7684\u9519\u8bef               <\/h1>\n<p> <\/p>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : xiangyuhahah <\/span>  <span><i><\/i> 4<\/span> <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<div isfirst=\"1\"> <\/p>\n<p>\u6211\u8fd9\u8fb9\u9047\u5230\u4e00\u4e2a\u95ee\u9898\uff0c\u4f7f\u7528 gevent \u7684\u65f6\u5019\uff0c\u62a5\u4e86 loopexit \u7684\u9519\u8bef\u3002<\/p>\n<pre><code>import random from Queue import Empty import gevent from gevent.queue import *  import gevent.monkey gevent.monkey.patch_all()   q = Queue() workers = []   def do_work(wid, value):     gevent.sleep(random.randint(0,2))     print 'Task', value, 'done', wid     return   def worker(wid):     while True:         try:             item = q.get()             if item:                 do_work(wid, item)         except StopIteration:             break         except Empty:             break   def producer():     for i in range(4):         workers.append(gevent.spawn(worker, random.randint(1, 888888)))      for item in range(1, 9):         q.put(item)   producer() gevent.joinall(workers) <\/code><\/pre>\n<p>\u6211\u67e5\u4e86\u7f51\u4e0a\u7684\u8d44\u6599\uff0c\u770b\u4e86 gevent \u7684\u539f\u7406\uff0c\u4f46\u662f\u6ca1\u600e\u4e48\u770b\u660e\u767d\u3002\u7f51\u4e0a\u4e3b\u6d41\u7684\u89e3\u91ca\u662f\u4efb\u52a1\u6d41\u5df2\u7ecf\u6d88\u8d39\u5b8c\u4e86\uff0c\u534f\u7a0b\u90fd\u5728\u505a waiter \u7684\u64cd\u4f5c\uff0c\u5bfc\u81f4 gevent \u7684 joinall \u5931\u8d25\u4e86\u3002\u6211\u6ca1\u6709\u7406\u89e3\u8fd9\u4e2a\u8fc7\u7a0b\u3002\u73b0\u5728\u7684\u6211\u7684\u89e3\u51b3\u529e\u6cd5\u662f\uff0c\u6d88\u8d39\u5b8c\u4efb\u52a1\u4e4b\u540e\u534f\u7a0b\u4f1a\u62a5\u7a7a\u7684\u9519\u8bef\uff0c\u6355\u6349\u4e00\u4e0b\u5c31\u9000\u51fa\u534f\u7a0b\u3002\u4f46\u662f\u6211\u611f\u89c9\u8fd9\u6837\u53ea\u662f\u63a9\u76d6\u4e86\u95ee\u9898\uff0c\u6ca1\u6709\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<pre><code>item = q.get() &gt;&gt;item = q.get(block=False) <\/code><\/pre>\n<p>\u5404\u4f4d\u5927\u4f6c\u600e\u4e48\u7406\u89e3 loopexit \uff1f<\/p>\n<\/p><\/div>\n<div> <b>\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (<span>2<\/span>)        <\/div>\n<div> <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<ul>\n<li data-pid=\"4227451\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : cz5424 <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u611f\u89c9\u662f Queue()\uff0c\u5982\u679c\u60f3\u8981\u591a\u7ebf\u7a0b\u591a\u8fdb\u7a0b\u548c\u534f\u7a0b\uff0c\u4e00\u822c\u4f1a\u907f\u514d\u5168\u5c40\u53d8\u91cf                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li data-pid=\"4227452\" data-uid=\"2\">\n<div>\n<div>\n<div> <span>\u8cc7\u6df1\u5927\u4f6c : catxo <\/span>  <\/div>\n<div> <i title=\"\u5f15\u7528\"><\/i>  <span>          <\/span> <\/div>\n<\/p><\/div>\n<div>                                                             \u4f60\u7684 worker \u662f\u4e00\u4e2a\u5faa\u73af\uff0c\u6ca1\u6709\u9000\u51fa\u6761\u4ef6<br \/>\u4e00\u822c\u90fd\u662f\u5224\u65ad item \u4e3a\u7a7a\u4f5c\u4e3a\u9000\u51fa\u6761\u4ef6<br \/>&#8220;`python<br \/> item = q.get()<br \/> if not item:<br \/> break<br \/> do_work(wid, item)<br \/>&#8220;`<\/p>\n<p>producer \u91cc\u9762\uff0c\u52a0\u4e0a<br \/>&#8220;`python<br \/> for _ in range(4):<br \/> q.put(None)<br \/>&#8220;`                                                            <\/div>\n<\/p><\/div>\n<\/li>\n<li>\n","protected":false},"excerpt":{"rendered":"<p>\u5404\u4f4d\u5927\u4f6c\uff0c\u5c0f\u5f1f\u4f7f\u7528 gevent &hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/203791"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=203791"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/203791\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=203791"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=203791"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=203791"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}