Re: apr_file_open() and non blocking IO

[Graham Leggett]

On 28 Feb 2010, at 2:20 PM, Dan Poirier wrote:

I am trying to open a fifo on disk with the O_NONBLOCK flag set,  
and I
notice that apr's apr_file_open() cannot do this.

As a result, if nobody else is already reading from the fifo,
apr_file_open blocks, and this is the behaviour I want to avoid.

Does anyone know of any reason why this wouldn't work?

Seems reasonable.  Have you tried it, or is this still hypothetical?

I have used it extensively on unix (Linux and MacOSX) within software  
that makes extensive use of an event driven architecture, however my  
knowledge of Windows is limited.

I have code that I would like to eventually have compiled on Windows,  
but if I support Windows, I can no longer support unix, thus the  
problem. I wanted to check first that there was nothing controversial  
I was missing.

It looks like the new flag is using the same bit as  
APR_FOPEN_ROTATING.

That's because the patch was created before running the svn update  
that brought in APR_FOPEN_ROTATING, it's already been fixed.

Regards,
Graham
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