[Python.NET] Python 2.4 hang when calling .NET dll function
Torgeir Johansen
torgeir.johansen at chello.no
Fri Mar 25 18:19:39 CET 2005
Great, Brian.
I successfully reproduced the state with a very simple application. Here is very dumb python program that uses the CLR:
from CLR.System import String
class cSharpCaller( object ):
def __init__( self ):
print "Created a cSharpCaller instance"
self.__cSharpString = None
def createCSharpString( self, str ):
self.__cSharpString = String( str )
def returnCSharpString( self ):
return self.__cSharpString.ToString()
And if I test this with this (dumb) threethreaded testprogram:
import threading, thread, time
from cSharpCaller import cSharpCaller
def start_threads(amount=5):
for i in range(amount):
thread = threading.Thread(target=process_thread )
print "starting thread ", thread.getName()
thread.start()
def process_thread( ):
print "thread started "
for i in range( 2 ):
print "Hi, I'm a thread"
time.sleep( 1 )
cs = cSharpCaller( )
cs.createCSharpString( "created from a thread" )
print "cs.returnCSharpString() = ", cs.returnCSharpString()
print "thread %s ended"
start_threads( 3 )
I get this output:
starting thread thread0
thread started
Hi, I'm thread %s
starting thread thread1
thread started
Hi, I'm thread %s
starting thread thread2
thread started
Hi, I'm thread %s
Hi, I'm thread %s
Hi, I'm thread %s
Hi, I'm thread %s
Created a cSharpCaller instance
Created a cSharpCaller instance
cs.returnCSharpString() =
and I have to CTRL+Pause to get out of the hang. Clearly hangs on the first String.ToString() method call.
Regards,
Torgeir
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