Just search the mailing lists for java mapscript, you should find plenty of references. The MapServerHelper class object i. By looking at MS4W build notes it seems like thread safety ought to be supported, but you can check for yourself as follows: You can try check for Mapserver Error instances benn throw in a catch block. To avoid thread issues, you can create all mapserver objects inside the given method, if using it in a servlet.

ms4w 3.0.6

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The MapServerHelper class object i. By looking at MS4W build notes it seems like thread safety ought to be supported, but you can check for yourself as follows:.

Email Required, but never shown. Just search the mailing lists for java mapscript, you should find plenty of references. Is there any particular way to create thread-safe mapObj and using it?

By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Asked 5 years, 10 months ago. Attached is log file generated in E: Thanx for replying back.

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[mapserver-users] How to enable GetFeatureInfo in MS4w ?

I have used successfully Java mapscript myself in many web apps. You can try check for Mapserver Error instances benn throw in a catch block. I have mz4w common mapObj with all its properties like mapHeightmapWidthboundingBox coords shared by different mapping functionality methods such as zoom-in,zoom-out,pan,fullExtent,etc.

Sign up or log in Sign up using Google. From a performance point of view there is no significant overhead, but the latter approach is critical for stability. Can ms4e suggest a better way to create and use mapObj in a thread-safe way? Shiva Shiva 35 6 6 bronze badges.

ms4w 3.0.6

Improving the question-asking experience. Say a thread from one request is doing zoomIn and another thread request comes in for pan at the same time the mapObj property is accessed by both the requests ms4a tomcat crashes.

The best answers are 30.6 up and rise to the top. To avoid thread issues, you can create all mapserver objects inside the given method, if using it in a servlet. This helped reduce the tomcat crashing issue.

ms4w 3.0.6

How to fix this? I did try marking all the method declarations as synchronized in the edu. The GIS application has polygon,line and point spatial layers. Will making the method declarations in edu.

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ms4w 3.0.6

By looking at MS4W build notes it seems like thread safety ought 3.06 be supported, but you can check for yourself as follows: I have no direct experience with MS4W but Mapserver can be used safely in threaded environments, provided that some simple precautions are taken.

That being said as Thomas pointed out you must not use or reuse Mapscript objects across requests: Post as a guest Name.

[MS4W-Users] MS4W 3.0.6 available

Missing to set some properties on objects, like layer type, can push you into some of those crashes. How do we handle problem users?

ms4e For a starting checklist consult the Mapserver FAQ, which has an entry just for thread safety. It should report the features that have been enabled at build time, something like the following:.

Sign up using Facebook. It should report the features that have been enabled at build time, something like the following: