使用python測測你的系統最多能建立多少個線程

使用python測測你的系統最多能建立多少個線程

2012-12-09 08:27:00     我來說兩句       作者：iihero

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使用一個迴圈，不斷的建立線程，直到出現異常，才通知它們。python真是個好東西。
代碼如下：
#!/usr/bin/env python
#coding=gbk

import threading
import time, random,  sys

class Counter:
    def __init__(self):
        self.lock = threading.Lock()
        self.value = 0

    def increment(self):
        self.lock.acquire()
        self.value = value = self.value + 1
        self.lock.release()
        return value

counter = Counter()
cond = threading.Condition()

class Worker(threading.Thread):

    def run(self):
        print self.getName(),  "-- created."
        cond.acquire()
        #for i in range(10):
            # pretend we're doing something that takes 10?00 ms
            #value = counter.increment()
            # time.sleep(random.randint(10, 100) / 1000.0)
        cond.wait()
        #print self.getName(), "-- task", "finished"
        cond.release()
       

if __name__ == '__main__':
   
        try:
            for i in range(3500):
                Worker().start() # start a worker
        except BaseException,  e:
            print "異常: ", type(e),  e
            time.sleep(5)
            print "maxium i=",  i
        finally:
            cond.acquire()
            cond.notifyAll()
            cond.release()
            time.sleep(3)
            print threading.currentThread().getName(),  " quit"

以下是python2.7在XP下的運行結果，可能跟具體的機器物理配置也有關係。
...........
Thread-1021 -- created.
Thread-1022 -- created. www.2cto.com
Thread-1023 -- created.
Thread-1024 -- created.
Thread-1025 -- created.
Thread-1026 -- created.
異常:  <class 'thread.error'> can't start new thread
Thread-1027 -- created.
maxium i= 1027
MainThread  quit