Re: [Jython-users] theading problem on Solaris ?

[tiga263 <ome...@gm...>]

There is the same problem on Linux but less frequently
I found a solution to bypass all these problems and that works perfectly
I use the J2SE 5 java.util.concurrent packages in particular the class
java.util.concurrent.atomic.AtomicLong
But this that not explain the weakness oj Jython implementation on
threading.

Hope this help
Olivier



tiga263 wrote:
> 
> Hello,
> 
> I use the load test tool  "The Grinder" release Beta 33 with Jython2.1 and
> the threading library to protect a critical section (just an increment).
> Here is an extract of my code.
> My objective is to increment the self.iccid variable in order to have a
> unique identifier between threads
> 
> 
> from threading import Condition
> 
> class TestRunner:
>     def __init__(self):
>         self.cv    = Condition()  # Used to synchronise thread   
> activity.
>         self.iccid=None
>         self.resourcesObject=None
>         self.pkg_id=None
>         self.max_iccid=None
>         self.firstRun=1
>         # Rampup Thread
>         # >>> sleep <<<
>         wait_time=grinder.threadID * sleepInitRampup
>         grinder.sleep(wait_time)
> 
>     def    __getICCID(self):
>         #
>         # Secured multi-threaded ICCID incrementation
>         #
>         global ICCID
>         self.cv.acquire()
>         try:
>             self.iccid=    str(ICCID)
>             ICCID+=1
>         finally:
>             self.cv.release()
> 
> When i use Solaris 9, i have threading problems : several threads do not
> respect the mutex (I see this with a print of self.iccid)
> I use the JVM 1.5_10
> 
> I have not these problems on a Linux Redhat 4 server - the same code works
> perfectly.
> What is your advice to investigate this ?
> Did your ever saw this kind of problem ?
> 
> Should i do a try with a pure java concurent library instead of python
> threading.condition ?
> 
> Thanks,
> Olivier
> 
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