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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Is this for MapScript? Should really let Tamas chime in. A single mapObj instance is modified during the course of a request once ingested from the mapfile. For
example, it holds a populated label cache and other changes made after it is loaded specific to a request. So I guess that means one mapObj per thread.<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> kelly elton [mailto:its.the.doc@gmail.com]
<br>
<b>Sent:</b> Thursday, November 05, 2015 4:35 PM<br>
<b>To:</b> Lime, Steve D (MNIT) <Steve.Lime@state.mn.us>; mapserver-users@lists.osgeo.org<br>
<b>Subject:</b> Re: [mapserver-users] Thread Safety<o:p></o:p></span></p>
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<p class="MsoNormal">To be sure, are you saying I can use a single map object for multiple threads, or will I need to have one map object per thread? What would you suggest?<o:p></o:p></p>
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<p class="MsoNormal">On Thu, Nov 5, 2015 at 5:33 PM Lime, Steve D (MNIT) <<a href="mailto:Steve.Lime@state.mn.us">Steve.Lime@state.mn.us</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You should be fine. I believe there are locks (mutex) around places where this is known to be a problem.
I’ve never heard user reports of issues in this regard.</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Steve</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> mapserver-users [mailto:<a href="mailto:mapserver-users-bounces@lists.osgeo.org" target="_blank">mapserver-users-bounces@lists.osgeo.org</a>]
<b>On Behalf Of </b>kelly elton<br>
<b>Sent:</b> Thursday, November 05, 2015 4:07 PM<br>
<b>To:</b> <a href="mailto:mapserver-users@lists.osgeo.org" target="_blank">mapserver-users@lists.osgeo.org</a><br>
<b>Subject:</b> [mapserver-users] Thread Safety</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Say....if I have two processes using the mapserver dll, are they going to conflict?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I'm noticing on the website it says "OGR layers: use unsafe CPL services"...In my map file I have 'CONNECTIONTYPE OGR'....what I do with the map object is project, and then draw
to png, and that's about it....this isn't thread safe then? What about if I have multiple map objects, one per thread....is that thread safe?<o:p></o:p></p>
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