Mapserver, MONO and apache a great story

Thu Jun 7 11:26:00 EDT 2007

Hi every body

i developped a web site using Mapscript and mono 1.1.13.
This site works well if only one user uses it. When a second user is
connected,  the site scratches with the folowing error : 

At this time, this situtation is rather uncomfortable 

I would be very happy to get help !!

Thanks in advance

My configuration is the following

Mono (1.1.13) 
gtk 2.8
Apache (2.2.?) with de mod_mono compiled for it mod_mono 1.1.14
MApscript (4.8.3). 
Postgres 8.1.3 and Postgis 1.1.1
Geos 2.2.1
GDAL 1.3.1
Ming 0.30
Proj4 (4.4.9)
Libiconv 1.9.1
gd-2.0.33

All these programs has been compiler on the computer

#!/bin/sh
./configure --with-gdal=/usr/local/bin/gdal-config
--with-ogr=/usr/local/bin/gdal-config
--with-postgis=/usr/local/pgsql/bin/pg_config --with-xpm=/usr/local/lib
--with-ming --with-png --with-jpeg --with-zlib --with-libiconv--without-tiff
--with-threads --with-gif --with-proj --with-gd=/usr/local -without-wms  

The error : 

=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

Stacktrace:

in (wrapper managed-to-native) mapscriptPINVOKE:mapObj_draw
(System.Runtime.InteropServices.HandleRef) <0x4>
in (wrapper managed-to-native) mapscriptPINVOKE:mapObj_draw
(System.Runtime.InteropServices.HandleRef) <0xffffff81>
in mapObj:draw () <0x21>
in siteflash.GetFlashMap:ProcessRequest (System.Web.HttpContext) <0x1095>
in <Pipeline>__1:MoveNext () <0x10a0>
in System.Web.HttpApplication:Tick () <0x1f>
in System.Web.HttpApplication:Start (object) <0x37>
in
System.Web.HttpApplication:System.Web.IHttpAsyncHandler.BeginProcessRequest
(System.Web.HttpContext,System.AsyncCallback,object) <0x68>
in System.Web.HttpRuntime:RealProcessRequest (object) <0x1ab>
in System.Web.HttpRuntime:ProcessRequest (System.Web.HttpWorkerRequest)
<0x2c>
in Mono.WebServer.MonoWorkerRequest:ProcessRequest () <0xa>
in Mono.WebServer.BaseApplicationHost:ProcessRequest
(Mono.WebServer.MonoWorkerRequest) <0x43>
in Mono.WebServer.ModMonoApplicationHost:ProcessRequest
(int,string,string,string,string,string,int,string,int,string,string[],strin
g[]) <0xdc>
in (wrapper remoting-invoke-with-check)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest
(int,string,string,string,string,string,int,string,int,string,string[],strin
g[]) <0xffffff0a>
in (wrapper xdomain-dispatch)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest
(object,byte[]&,byte[]&,int,string,string,string,string,string,int,string,in
t,string,string[],string[]) <0xfffedaf6>
in (wrapper xdomain-invoke)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest
(int,string,string,string,string,string,int,string,int,string,string[],strin
g[]) <0xffffff6a>
in (wrapper remoting-invoke-with-check)
Mono.WebServer.ModMonoApplicationHost:ProcessRequest
(int,string,string,string,string,string,int,string,int,string,string[],strin
g[]) <0xffca8c14>
in Mono.WebServer.ModMonoWorker:InnerRun (object) <0x404>
in Mono.WebServer.ModMonoWorker:Run (object) <0x17>
in (wrapper delegate-invoke) System.MulticastDelegate:invoke_void_object
(object) <0xffffff95>
in (wrapper runtime-invoke) System.Object:runtime_invoke_void_object
(object,intptr,intptr,intptr) <0xc7371b5f>

Native stacktrace:

 /usr/lib/pkgconfig/../../bin/mono(mono_handle_native_sigsegv+0xbb)
[0x814ee2b]
 /usr/lib/pkgconfig/../../bin/mono [0x813b2cf]
 [0xffffe440]
 /usr/local/pgsql/lib/libpq.so.4(PQreset+0x1a) [0x41f2ea9a]
 /usr/local/lib/libmapscript.so(msPOSTGISLayerWhichShapes+0x724)
[0x4193fd24]
 /usr/local/lib/libmapscript.so(msLayerWhichShapes+0x39) [0x418f6e19]
 /usr/local/lib/libmapscript.so(msDrawVectorLayer+0x19c) [0x418fec8c]
 /usr/local/lib/libmapscript.so(msDrawLayer+0x90) [0x418ff150]
 /usr/local/lib/libmapscript.so(msDrawMap+0x2fd) [0x418ffe1d]
 /usr/local/lib/libmapscript.so(CSharp_mapObj_draw+0x1d) [0x418b5e3d]
 [0x4185849c]
 [0x418583ba]
 [0x41851956]
 [0x41605749]
 [0x416045d0]
 [0x416009d8]
 [0x416008b9]
 [0x41150854]
 [0x41150385]
 [0x41150343]
 [0x4114f544]
 [0x41134535]
 [0x41133c9c]
 [0x41133a7b]
 [0x4112125f]
 [0x4112109b]
 [0x40dc9bdd]
 [0x40dc9730]
 [0x40dc96f4]
 [0x40dc964e]
 /usr/lib/pkgconfig/../../bin/mono [0x813b180]
 /usr/lib/pkgconfig/../../bin/mono(mono_runtime_invoke+0x27) [0x80d63f7]
 /usr/lib/pkgconfig/../../bin/mono(mono_runtime_invoke_array+0x270)
[0x80d78c0]
 /usr/lib/pkgconfig/../../bin/mono(mono_message_invoke+0xc5) [0x80d93d5]
 /usr/lib/pkgconfig/../../bin/mono [0x80a509f]
 /usr/lib/pkgconfig/../../bin/mono [0x80a58c9]
 /usr/lib/pkgconfig/../../bin/mono [0x8099fb2]
 /usr/lib/pkgconfig/../../bin/mono [0x80f5067]
 /usr/lib/pkgconfig/../../bin/mono [0x8113175]
 /lib/tls/libpthread.so.0 [0x400e5297]
 /lib/tls/libc.so.6(__clone+0x5e) [0x401e037e]

best regards

-----------------------------------------

Xavier Mauclaire

Service informatique
GEOTER SAS
3, rue Jean Monnet
34830 Clapiers France
Tél.: +33 (0)4.67.59.18.11
Fax: +33 (0)4.67.59.18.24 

Email: xavier.mauclaire at geoter.fr

Web site: http://www.geoter.fr

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