使用一个循环,不断的创建线程,直到出现异常,才通知它们。python真是个好东西。
代码如下:
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import threading
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import time, random, sys
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class Counter:
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def __init__(self):
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self.lock = threading.Lock()
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self.value = 0
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def increment(self):
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self.lock.acquire()
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self.value = value = self.value + 1
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self.lock.release()
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return value
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counter = Counter()
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cond = threading.Condition()
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class Worker(threading.Thread):
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def run(self):
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print self.getName(), "-- created."
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cond.acquire()
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cond.wait()
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cond.release()
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if __name__ == '__main__':
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try:
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for i in range(3500):
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Worker().start()
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except BaseException, e:
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print "异常: ", type(e), e
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time.sleep(5)
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print "maxium i=", i
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finally:
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cond.acquire()
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cond.notifyAll()
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cond.release()
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time.sleep(3)
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print threading.currentThread().getName(), " quit"
以下是python2.7在XP下的运行结果,可能跟具体的机器物理配置也有关系。
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...........
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Thread-1021 -- created.
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Thread-1022 -- created.
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Thread-1023 -- created.
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Thread-1024 -- created.
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Thread-1025 -- created.
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Thread-1026 -- created.
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异常: can't start new thread
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Thread-1027 -- created.
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maxium i= 1027
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MainThread quit
最终只能创建1027个线程。
我后来使用python2.5.2来测了一下,也只能创建1029个线程。
储位朋友有兴趣,可以使用它来测测不同平台下,最多能创建多少个线程。
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