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testing threading
imanay -
r159:160
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1 import threading
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2 import datetime
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3
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4 class ThreadClass(threading.Thread):
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5
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6 def run(self):
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7 now = datetime.datetime.now()
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8 print "%s says Hello World at time: %s" % (self.getName(), now)
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9
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10 for i in range(2):
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11 t = ThreadClass()
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12 t.start() No newline at end of file
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1 import urllib2
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2 import time
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3
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4 hosts = ["http://yahoo.com", "http://google.com", "http://amazon.com",
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5 "http://ibm.com", "http://apple.com"]
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6
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7 start = time.time()
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8 #grabs urls of hosts and prints first 1024 bytes of page
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9 for host in hosts:
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10 url = urllib2.urlopen(host)
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11 print url.read(1024)
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12
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13 print "Elapsed Time: %s" % (time.time() - start) No newline at end of file
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1 #!/usr/bin/env python
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2 import Queue
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3 import threading
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4 import urllib2
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5 import time
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6
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7 hosts = ["http://yahoo.com", "http://google.com", "http://amazon.com",
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8 "http://ibm.com", "http://apple.com"]
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9
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10 queue = Queue.Queue()
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11
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12 class ThreadUrl(threading.Thread):
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13 """Threaded Url Grab"""
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14 def __init__(self, queue):
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15 threading.Thread.__init__(self)
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16 self.queue = queue
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17
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18 def run(self):
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19 while True:
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20 #grabs host from queue
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21 host = self.queue.get()
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22
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23 #grabs urls of hosts and prints first 1024 bytes of page
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24 url = urllib2.urlopen(host)
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25 print url.read(1024)
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26
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27 #signals to queue job is done
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28 self.queue.task_done()
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29
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30 start = time.time()
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31
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32 def main():
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33 #spawn a pool of threads, and pass them queue instance
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34 for i in range(5):
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35 t = ThreadUrl(queue)
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36 t.setDaemon(True)
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37 t.start()
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38 #populate queue with data
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39 for host in hosts:
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40 queue.put(host)
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41 queue.join()
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42
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43 main()
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44 print "Elapsed Time: %s" % (time.time() - start) No newline at end of file
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