[gdal-dev] Multithreaded GDAL

[Martin Chapman]

Yehiyam,

 

You can read from different threads concurrently if each thread has its
own, unique GDALDataset handle.  That means call GDALOpen() from each
thread on the same file path.  Writing should be done from one thread.  

 

Best regards,

Martin

 

 

From: gdal-dev-bounces at lists.osgeo.org
[mailto:gdal-dev-bounces at lists.osgeo.org] On Behalf Of Livneh Yehiyam
Sent: Monday, December 24, 2012 7:04 AM
To: gdal-dev
Subject: [gdal-dev] Multithreaded GDAL

 

Hi all

I've tried searching for an answer online, but the most recent information
I found is more than 3 years old.

We have method that reads pixels from one data-source, performs some
manipulation, and writes it to another.

Reading is done with the Band.ReadRaster C# API. 

Writing is done with the Band.WriteRaster c# API.

 

I'd like to process several data-sets in parallel on multiple threads. 

>From what I could understand from
http://trac.osgeo.org/gdal/wiki/FAQMiscellaneous and other online sources,
"no threads can be writing to GDAL while others are reading".

Has this changed in recent versions? Is it now possible to read and write
on different threads (from different data-sets)?

 

Thanks

Yehiyam

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