[Twisted-Python] Abouth threads in twisted.

[Peter Cai]

Thanks for your reply!  But I think I have to read some source code
 of twisted to make sure what was happening behind callFromThread.

On Tue, Aug 19, 2008 at 11:58 PM, Itamar Shtull-Trauring <
itamar at itamarst.org> wrote:

> On Tue, 2008-08-19 at 20:08 +0800, Peter Cai wrote:
> > Hi All,
> >
> > QUESTION 1 : callFromThread
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >
> > I found this code snippet in twisted manual book.
> > But I don't quite get it.
> >
> > What does "run 'notThreadSafe(3)' in the event loop" means?
> >
> > Does the reactor promise that all those "notThreadSafe" functions
> > be called one by one so they won't interfere each other?
>
> They will be called in main thread, the one where you did reactor.run()
>
> > QUESTION 2 : Integrated with a threaded 3rd party library.
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > I have a C library which using a work threaded pool model.  It's
> > interface is like this.
> >
> >     void runWorkAsyn(int args, void pcallbackfunc(int));
> >
> > When runWorkAsyn is called, it dispatch work to a thread in its
> > own thread pool and call 'pcallbackfunc' in that thread when it's
> > done.
> >
> > I really got confused by how use this lib from twisted in a thread
> > safe way.
> > If I use a python callback function as pcallbackfunc and touch the
> > reactor from it,
> > it might damage the event look as most twisted APIs are not thread
> > safe.
>
> Rather than passing in callable "doSomething" as callback, pass in:
> "lambda *args: reactor.callFromThread(doSomething, *args)".
>
>
>
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