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Michael
*From:* users-boun...@lists.ironpython.com
[mailto:users-boun...@lists.ironpython.com] *On Behalf Of *Michael
Foord
*Sent:* Monday, December 15, 2008 12:53 PM
*To:* Discussion of IronPython
*Subject:* Re: [IronPython] IronPython and file descriptors
2008/12
] IronPython and file descriptors
2008/12/15 Dino Viehland di...@microsoft.com
mailto:di...@microsoft.com
Presumably CPython is linking against msvcrt and is using the C
abstraction rather than calling the Win32 APIs which return handles
directly.
As Curt said the biggest problem for us
Hi,
At the moment file.fileno() returns an arbitrary identifier of a python
file rather than a true file descriptor. This is semi-blocking the
Ironclad port of PIL.
Code in PIL gets an integer using fileno() and passes it directly to C
code where a call to write() is made. To fix this one
There's no such thing as a file descriptor number in .NET -- or, for that
matter, in Windows itself! :) (The latter is something of a semantic point,
of course, as a HANDLE serves something of the same role in Win32 as a file
descriptor number does in Unix.)
If you have a FileStream, I think you
Not so: Though admittedly you have to do quite a bit of work to get the
file descriptor into .NET.
http://msdn.microsoft.com/en-us/library/bdts1c9x(VS.71).aspx
To clarify - the C library was written to work with Python (not
IronPython) and is not my code.
Thanks,
Tom
Curt Hagenlocher
Ah, that was the function I was looking for.
Sure, the file descriptor exists in the C library under Windows. But the C
library is basically doing exactly the same thing as IronPython is; it's
maintaining the file descriptor number as an abstraction on top of the
HANDLE that the operating system
Agreed. It is certainly possible with some work to get a file descriptor
and pass it to C code.
This is not the problem, however. Ironclad's aim (eventually) is to
allow *arbitrary* C extensions to work with Ironpython without changing
the extensions. Ctypes aim is to allow arbitrary C code
On Mon, Dec 15, 2008 at 11:18 AM, Tom Wright
tom.wri...@resolversystems.com wrote:
Agreed. It is certainly possible with some work to get a file descriptor and
pass it to C code.
This is not the problem, however. Ironclad's aim (eventually) is to allow
*arbitrary* C extensions to work with
I think I understand the motivation pretty well; what I'm saying is that I
don't see that this is possible. IronPython has no access to the table
being used by the C library to map between Windows HANDLEs and clib file
descriptors, so we can't return a clib-compatible fd.
Even if we were to
, December 15, 2008 10:21 AM
To: Discussion of IronPython
Subject: Re: [IronPython] IronPython and file descriptors
On Mon, Dec 15, 2008 at 11:18 AM, Tom Wright
tom.wri...@resolversystems.com wrote:
Agreed. It is certainly possible with some work to get a file descriptor and
pass it to C code
, 2008 10:21 AM
To: Discussion of IronPython
Subject: Re: [IronPython] IronPython and file descriptors
On Mon, Dec 15, 2008 at 11:18 AM, Tom Wright
tom.wri...@resolversystems.com wrote:
Agreed. It is certainly possible with some work to get a file descriptor
and
pass it to C code
...@lists.ironpython.com] On Behalf Of Slide
Sent: Monday, December 15, 2008 10:21 AM
To: Discussion of IronPython
Subject: Re: [IronPython] IronPython and file descriptors
On Mon, Dec 15, 2008 at 11:18 AM, Tom Wright
tom.wri...@resolversystems.com wrote:
Agreed. It is certainly possible with some work
*Sent:* Monday, December 15, 2008 12:53 PM
*To:* Discussion of IronPython
*Subject:* Re: [IronPython] IronPython and file descriptors
2008/12/15 Dino Viehland di...@microsoft.com
mailto:di...@microsoft.com
Presumably CPython is linking against msvcrt and is using the C
abstraction rather than
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