I've often wondered if the CLR Interlocked methods work with
IronPython. It seems that Interlocked.Increment works fine with module
globals (see attached script.) Whether it works fine in general I
don't know. Does anybody know anything about this?
-Dan
>ipy interlockedinc.py
UnsafeCount: -32081
SafeCount: 0
>ipy interlockedinc.py
UnsafeCount: -27749
SafeCount: 0
>ipy interlockedinc.py
UnsafeCount: -37339
SafeCount: 0
>ipy interlockedinc.py
UnsafeCount: -39461
SafeCount: 0
>ipy interlockedinc.py
UnsafeCount: 23175
SafeCount: 0
from System.Threading import Thread, ThreadStart, Interlocked
def main():
thread1 = Thread(ThreadStart(thread_method))
thread2 = Thread(ThreadStart(thread_method))
thread3 = Thread(ThreadStart(thread_method))
thread1.Start()
thread2.Start()
thread3.Start()
thread1.Join()
thread2.Join()
thread3.Join()
print 'UnsafeCount: %d\nSafeCount: %d' % (UnsafeCount, SafeCount)
UnsafeCount = 0
SafeCount = 0
def thread_method():
global UnsafeCount, SafeCount
for i in xrange(100000):
UnsafeCount += 1
Interlocked.Increment(SafeCount)
for i in xrange(100000):
UnsafeCount -= 1
Interlocked.Decrement(SafeCount)
if __name__ == '__main__':
main()
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