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Subject: Re: GPARS.withPool, xml.MarkupBuilder, XmlParser and HTTPBuilder
To: users@groovy.apache.org
References: <D0374A7F-5FB7-44CA-86FA-6B121F1C2F4E@gmx.de>
From: Jochen Theodorou <blackdrag@gmx.org>
Message-ID: <576501A4.7030103@gmx.org>
Date: Sat, 18 Jun 2016 10:09:08 +0200
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archived-at: Sat, 18 Jun 2016 08:09:22 -0000

On 16.06.2016 09:40, Paolo wrote:
[...]
> So basically I have a closure called fileworker that will process a file
>
> def fileworker = {
>    open file
>    parse file, adjust some values and create XML file using MarkupBuilder
>    parse the created XML file using XmlParser
>    upload file and XML file using HTTPBuilder
> }
>
> and this closure will be used for processing the list in parallel
> (collectParallel)
>
> groovyx.gpars.GParsPool.withPool(threads) {
>                 result = list.collectParallel fileworker
> }
>
> Due to my missing experiences I am a little concerned about thread
> safety when GPARS comes into place ….

fileworker is self-contained from what I see, so you do not have to 
worry about concurrency issues in this case. You have to worry about 
those once you have data shared by multiple threads.

bye Jochen