I'm using Lasso 9.2.5 on CentOS 6.4

I need a reliable way to get parameters from the main script to an asynchronously processed block of code.

I am trying to loop through a large list of PDFs so that I can use dmtxread to get information from a datamatrix-barcode coversheet on each PDF.

I am using this basic format:

{

shell('/usr/bin/convert -scale 25% -quality 100 -density 576 /longpath/source/13-02386osc.pdf[0] /longpath/png/13-02386osc.png')

shell('/usr/bin/dmtxread --page=1 -n --square-deviation=30 --threshold=15 /longpath/png/13-02386osc.png')

}->asasync();

Which does seem to spawn a new thread and doesn't delay the main script, but I can not, FOR THE LIFE OF ME, figure out how to get information into this asasync block. Globals are not an option for my environment.

I have tried:

}
// do stuff
}->asasync(-params(array('PDFFileName'='13-02386osc.pdf', 'PDFPath'='/long/path/')))

I have also tried Bil's method (from: http://www.lassosoft.com/Spawning-Asynchronous-Threads):

}
Lasso_ExecutionTimeLimit(60 * 60); // in seconds, set this to something reasonable, currently set to 1 hour
Thread_SetPriority(Thread_GetCurrentID, Thread_Priority_Low); // set priority to low, give more priority to normal web requests (can also make it high if needed)

// recreate vars - don't change the code below - this makes all the vars on the page available to the async thread

iterate(params->find('-vars')->get(1)->value, local('var')) => {^
var(#var->name=#var->value)
^}
}->asasync(-params=array( '-vars' = vars))

Both of these options give me an error similar to this in Lasso 9.5.2 on CentOS 6.4
Error Msg: Definition Not Found: capture->asasync(-params=array) Candidates were: capture->asasync()

I have even tried Bil's suggestion of using include_url(-postparms(), -nodata) as an endpoint api but that doesn't seem to spawn an independent thread at all in Lasso 9. I just sit and wait and wait as though the processing was done from the main script.

Any suggestions are VERY welcome.
Thanks!
Ari



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