Xiaofan,
I'm using python 2.7.
I'm for sure are interested of building libftdi myself, but I'm not sure if the
-threads fixes all my issues, it should help anyway, so I want to do a quick
testdrive.
The intention of -threads for swig is to release the cPython GIL
(http://wiki.python.org/moin/GlobalInterpreterLock) on library calls. This
means that the operating system will switch to another process/thread while
waiting for the latency of the USB-communication.
If using the command line option -threads, SWIG will use this mechanism for all
calls. This can be fine-tuned in the input file for SWIG (.i). But like I said
earlier, if I see a good enough benefit for my purpose, I can try to do this
later on.
If you can provide the compiled results with -threads for python 2.7, I can do
my tests. I can come back to you later for compiling this myself if needed. I
think I need only _ftdi1.pyd and ftdi1.py
(svhb1000ATgmailDOTcom)
Thanks
-----Original Message-----
From: Xiaofan Chen [mailto:xiaofanc@xxxxxxxxx]
Sent: donderdag 22 augustus 2013 3:38
To: libftdi@xxxxxxxxxxxxxxxxxxxxxxx
Subject: Re: : adding -threads to SWIG build step?
On Tue, Aug 20, 2013 at 4:42 PM, Vanheesbeke Stefaan
<Stefaan.Vanheesbeke@xxxxxxxxxxxxxx> wrote:
> Is anyone using the python bindings for libftdi 1.x?
>
> I want to use it with a multithreaded application in Python. But this
> needs the -threads options for the SWIG build step (release the
> python GIL on library calls to the driver).
>
> Can someone add this as an extra output to the build process (so an
> extra directory appears with the -threads build)
>
> I was able to test this on Linux successfully, but it's not possible
> for me to do the same on Windows. Very much appreciate if someone can
> make a windows-build of libftdi-1.0 with the -threads added to swig.
I am not a Python expert but I have been able to build the Python binding under
Windows. Which Python version are you using? What should I do to add -threads
option to Swig?
Or maybe you can tell me your problems when building libftdi Python bindings
under Windows so that I can help you there?
--
Xiaofan
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