[gdal-dev] RE: Thread Synchronization in 1.5.0?

[Martin Chapman]

Thanks for the information Frank.

Best regards,
Martin Chapman


-----Original Message-----
From: Frank Warmerdam [mailto:warmerdam at pobox.com] 
Sent: Friday, February 08, 2008 2:05 PM
To: Martin Chapman
Cc: gdal-dev at lists.osgeo.org
Subject: Re: Thread Synchronization in 1.5.0?

Martin Chapman wrote:
> Frank,
> 
>  
> 
> I see a lot of thread synchronization code in 1.5.0 but not everywhere.  
> Does this mean that some of GDAL is currently thread safe and other 
> parts are not, or is the whole library considered safe at this point?  
> Is there any public documentation on this new behavior?

Martin,

The response in the FAQ:

   http://trac.osgeo.org/gdal/wiki/FAQMiscellaneous

is still essentially accurate.  We can safely read via multiple threads
from some drivers.  Writing is not thread safe.  Many drivers have not
been reviewed and are at users-own-risk.

But I think things have improved since 1.3.0 in that some thread
related bugs have been fixed and there are more safe drivers.

Best regards,

-- 
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I set the clouds in motion - turn up   | Frank Warmerdam,
warmerdam at pobox.com
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and watch the world go round - Rush    | President OSGeo, http://osgeo.org