Java Mapscript

Fri Sep 22 10:23:44 EDT 2006

Umberto,

I think that I'm creating a map for each request.

It's something like...

mapObj map = new mapObj("/usr/local/mapserver/mapfile.map");
map.setSize(w,h);
map.setExtent(rectObj);
imageObj imgObj = map.draw();
imgObj.save(path, map);

Is that right?

Best Regards,

Fred

On 9/22/06, Umberto Nicoletti <umberto.nicoletti at gmail.com> wrote:
>
> Frederico,
> are you sharing the same map object among threads i.e. you have one
> mapObj per web application that is shared between all users or you
> reuse the mapserver objects across http requests?
>
> The recommended (and so far the only known to work in webapps) is to
> create a new mapObj with every request. The overhead is unnoticeable.
>
> Umberto
>
>
>
> On 9/21/06, Frederico Lucca <fredlucca at gmail.com> wrote:
> > Umberto,
> >
> > Here are the information that I can give.
> >
> > Linux porto 2.4.29 #25 Thu Jan 20 17:21:56 PST 2005 i686 unknown unknown
> > GNU/Linux
> >
> > gcc (GCC) 3.3.4
> >
> > MapServer version 4.8.4 OUTPUT=GIF OUTPUT=PNG OUTPUT=JPEG OUTPUT=WBMP
> > OUTPUT=SVG SUPPORTS=PROJ SUPPORTS=FREETYPE SUPPORTS=WMS_SERVER
> > SUPPORTS=THREADS INPUT=EPPL7 INPUT=OGR INPUT=GDAL INPUT=SHAPEFILE
> >
> > java version "1.5.0_06"
> > Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
> > Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
> >
> > SWIG Version 1.3.29
> > Compiled with g++ [i686-pc-linux-gnu]
> >
> > gdal 1.3.2
> >
> > proj 4.4.9
> >
> > tomcat 5.5.9
> >
> > I configure --with-threads --with-ogr --with-gdal --with-proj
> >
> > The code is simple like open, setExtent, draw
> >
> > Best Regards,
> >
> > Fred
> >
> >
> >  On 9/21/06, Umberto Nicoletti <umberto.nicoletti at gmail.com> wrote:
> > > On 9/21/06, Frederico Lucca <fredlucca at gmail.com> wrote:
> > > > Hello list,
> > > >
> > > > I'm having trouble with mapserver and java mapscript, my tomcat
> broke
> > with
> > > > this error after some requests.
> > > > Could someone help me?
> > >
> > > I would, but I need more details. There is a java mapscript doc on
> > > mapserver web site that has a section exactly about what you need to
> > > tell us to help us help you ;-).
> > >
> > > Umberto
> > >
> > > >
> > > > Best Regards,
> > > >
> > > > Fred
> > > >
> > > > #
> > > > # An unexpected error has been detected by HotSpot Virtual Machine:
> > > >
> > > > #
> > > > # SIGSEGV (0xb) at pc=0x400eb3fd, pid=17455, tid=376856
> > > > #
> > > > # Java VM: Java HotSpot(TM) Client VM (1.5.0_06-b05 mixed mode,
> sharing)
> > > > # Problematic frame:
> > > > # C [libc.so.6+0x683fd] mempcpy+0x2d
> > > > #
> > > >
> > > >
> > > > --------------- T H R E A D ---------------
> > > >
> > > > Current thread (0x08204c28): JavaThread "http-8080-Processor15"
> daemon
> > > > [_thread_in_native, id=17480]
> > > >
> > > > Stack: [0xbca01000,0xbcc00000), sp=0xbcbfe21c, free space=2036k
> > > >
> > > > Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
> > C=native
> > > > code)
> > > > C [libc.so.6+0x683fd] mempcpy+0x2d
> > > > C [libc.so.6+0x5dba3]
> > > > C [libc.so.6+0x5ee48] _IO_sgetn+0x28
> > > > C [ libc.so.6+0x539f4] _IO_fread+0x74
> > > >
> > > > C [libmapscript.so+0x545d5] msSHPOpen+0x425
> > > > C [libmapscript.so+0x562a9] msSHPOpenFile+0x59
> > > > C [libmapscript.so+0x57de1] msShapeFileLayerOpen+0x91
> > > > C [ libmapscript.so+0x80d11] msLayerOpen+0x71
> > > > C [libmapscript.so+0x8c3f6
> > > > ] msDrawVectorLayer+0xe6
> > > > C [libmapscript.so+0x8c155] msDrawLayer+0x95
> > > > C [libmapscript.so+0x8b9de] msDrawMap+0x42e
> > > > C [ libmapscript.so+0x2c59c]
> > > > C [libmapscript.so+0x3e825]
> > > >
> > Java_edu_umn_gis_mapscript_mapscriptJNI_mapObj_1draw+0x35
> > > >
> > > > j edu.umn.gis.mapscript.mapscriptJNI.mapObj_draw(J)J+0
> > > > j
> > > > edu.umn.gis.mapscript.mapObj.draw
> > ()Ledu/umn/gis/mapscript/imageObj;+4
> > > > j
> > > >
> > br.com.multispectral.mapapp.MapServerApp.export(Ljava/lang/String;)V+4
> > > > j TileServer.exportExact
> > > >
> > (Lbr/com/multispectral/mapapp/MapServerApp;DDDLjava/lang/String;II)V+61
> > > > j
> > > >
> > TileServer.processRequest
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+248
> > > > j
> > > >
> > TileServer.doPost
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+3
> > > >
> > > > j
> > > >
> > javax.servlet.http.HttpServlet.service
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+139
> > > > j
> > > >
> > javax.servlet.http.HttpServlet.service
> (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+30
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
> (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+354
> > > > j
> > > >
> > org.apache.catalina.core.ApplicationFilterChain.doFilter
> > (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+101
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.StandardWrapperValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+670
> > > > j
> > > >
> > org.apache.catalina.core.StandardContextValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+285
> > > >
> > > > j
> > > > org.apache.catalina.core.StandardHostValve.invoke
> >
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+64
> > > > j
> > > >
> > org.apache.catalina.valves.ErrorReportValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+6
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.StandardEngineValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+42
> > > > j
> > > > org.apache.catalina.connector.CoyoteAdapter.service
> > (Lorg/apache/coyote/Request;Lorg/apache/coyote/Response;)V+141
> > > >
> > > > j
> > > >
> > org.apache.coyote.http11.Http11Processor.process
> (Ljava/io/InputStream;Ljava/io/OutputStream;)V+521
> > > > j
> > > >
> >
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection
> > (Lorg/apache/tomcat/util/net/TcpConnection;[Ljava/lang/Object;)V+113
> > > >
> > > > j
> > > >
> > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
> (Ljava/net/Socket;Lorg/apache/tomcat/util/net/TcpConnection;[Ljava/lang/Object;)V+45
> > > > j
> > > >
> > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
> ([Ljava/lang/Object;)V+102
> > > >
> > > > j
> > > >
> > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run()V+167
> > > > j java.lang.Thread.run ()V+11
> > > > v ~StubRoutines::call_stub
> > > > V [libjvm.so+0x174fec]
> > > > V [libjvm.so+0x2821f8]
> > > > V [libjvm.so+0x174845]
> > > >
> > > > V [libjvm.so+0x1748de]
> > > > V [libjvm.so+0x1ebee5]
> > > > V [libjvm.so+0x2ea563 ]
> > > > V [libjvm.so+0x282d08]
> > > > C [libpthread.so.0+0x654e]
> > > >
> > > > Java frames: (J=compiled Java code, j=interpreted, Vv=VM code)
> > > >
> > > > j edu.umn.gis.mapscript.mapscriptJNI.mapObj_draw(J)J+0
> > > > j
> > > >
> > edu.umn.gis.mapscript.mapObj.draw()Ledu/umn/gis/mapscript/imageObj;+4
> > > > j
> > > >
> > br.com.multispectral.mapapp.MapServerApp.export(Ljava/lang/String;)V+4
> > > > j TileServer.exportExact
> > > >
> > (Lbr/com/multispectral/mapapp/MapServerApp;DDDLjava/lang/String;II)V+61
> > > > j
> > > >
> > TileServer.processRequest
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+248
> > > > j
> > > >
> > TileServer.doPost
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+3
> > > >
> > > > j
> > > >
> > javax.servlet.http.HttpServlet.service
> (Ljavax/servlet/http/HttpServletRequest;Ljavax/servlet/http/HttpServletResponse;)V+139
> > > > j
> > > >
> > javax.servlet.http.HttpServlet.service
> (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+30
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter
> (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+354
> > > > j
> > > >
> > org.apache.catalina.core.ApplicationFilterChain.doFilter
> > (Ljavax/servlet/ServletRequest;Ljavax/servlet/ServletResponse;)V+101
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.StandardWrapperValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+670
> > > > j
> > > >
> > org.apache.catalina.core.StandardContextValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+285
> > > >
> > > > j
> > > > org.apache.catalina.core.StandardHostValve.invoke
> >
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+64
> > > > j
> > > >
> > org.apache.catalina.valves.ErrorReportValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+6
> > > >
> > > > j
> > > >
> > org.apache.catalina.core.StandardEngineValve.invoke
> (Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;)V+42
> > > > j
> > > > org.apache.catalina.connector.CoyoteAdapter.service
> > (Lorg/apache/coyote/Request;Lorg/apache/coyote/Response;)V+141
> > > >
> > > > j
> > > >
> > org.apache.coyote.http11.Http11Processor.process
> (Ljava/io/InputStream;Ljava/io/OutputStream;)V+521
> > > > j
> > > >
> >
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection
> > (Lorg/apache/tomcat/util/net/TcpConnection;[Ljava/lang/Object;)V+113
> > > >
> > > > j
> > > >
> > org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket
> (Ljava/net/Socket;Lorg/apache/tomcat/util/net/TcpConnection;[Ljava/lang/Object;)V+45
> > > > j
> > > >
> > org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt
> ([Ljava/lang/Object;)V+102
> > > >
> > > > j
> > > >
> > org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run()V+167
> > > > j java.lang.Thread.run ()V+11
> > > > v ~StubRoutines::call_stub
> > > >
> > > > 40000000-40015000 r-xp 00000000 08:01 12210 /lib/ld-
> > > > 2.3.4.so
> > > > 40015000-40017000 rw-p 00014000 08:01 12210 /lib/ld- 2.3.4.so
> > > > 40017000-40018000 r--p 00000000 00:00 0
> > > > 40018000-40019000 rwxp 00001000 00:00 0
> > > > 40019000-4001f000 r-xp 00000000 08:01 144145
> > > >
> > /usr/lib/jdk1.5.0_06/jre/lib/i386/native_threads/libhpi.so
> > > >
> > > > 4001f000-40020000 rw-p 00006000 08:01 144145
> > > >
> > /usr/lib/jdk1.5.0_06/jre/lib/i386/native_threads/libhpi.so
> > > > 40020000-40027000 r-xp 00000000 08:01 12445 /lib/libnss_compat-
> 2.3.4.so
> > > >
> > > > 40027000-40029000 rw-p 00006000 08:01 12445 /lib/libnss_compat-
> 2.3.4.so
> > > > 40029000-4002b000 r--s 00000000 08:01 149512
> > > > /usr/lib/jdk1.5.0_06/jre/lib/ext/dnsns.jar
> > > > 4002b000-4002c000 rw-p 00000000 00:00 0
> > > >
> > > > 4002c000-4003a000 r-xp 00000000 08:01 12452 /lib/libpthread-0.10.so
> > > > 4003a000-4003c000 rw-p 0000d000 08:01 12452 /lib/libpthread- 0.10.so
> > > > 4003c000-4007e000 rw-p 00000000 00:00 0
> > > >
> > > > 4007e000-40080000 r-xp 00000000 08:01 12441 /lib/libdl-2.3.4.so
> > > > 40080000-40082000 rw-p 00001000 08:01 12441 /lib/libdl- 2.3.4.so
> > > > 40082000-40083000 rw-p 00000000 00:00 0
> > > >
> > > > 40083000-40199000 r-xp 00000000 08:01 12438 /lib/libc-2.3.4.so
> > > > 40199000-4019a000 ---p 00116000 08:01 12438 /lib/libc- 2.3.4.so
> > > > 4019a000-4019b000 r--p 00116000 08:01 12438 /lib/libc-
> > > > 2.3.4.so
> > > > 4019b000-4019e000 rw-p 00117000 08:01 12438 /lib/libc- 2.3.4.so
> > > > 46862000-46863000 r-xp 00000000 08:01 12419 /usr/lib/gconv/ISO8859-
> 1.so
> > > >
> > > > 46863000-46864000 ---p 00001000 08:01 12419 /usr/lib/gconv/ISO8859-
> 1.so
> > > > 46864000-46866000 rw-p 00001000 08:01 12419 /usr/lib/gconv/ISO8859-
> 1.so
> > > > 46874000-4688f000 r-xp 00000000 08:02 521
> /usr/local/lib/libgd.so.2.0.0
> > > >
> > > > 4688f000-468af000 rw-p 0001a000 08:02 521
> /usr/local/lib/libgd.so.2.0.0
> > > > 468af000-468c3000 rw-p 00000000 00:00 0
> > > > 468c3000-468df000 r-xp 00000000 08:01 201 /usr/lib/libjpeg.so.62.0.0
> > > > 468df000-468e0000 rw-p 0001b000 08:01 201 /usr/lib/libjpeg.so.62.0.0
> > > >
> > > > 468e0000-468f0000 r-xp 00000000 08:01 59294 /usr/lib/libz.so.1.2.2
> > > > 468f0000-468f1000 rw-p 0000f000 08:01 59294 /usr/lib/libz.so.1.2.2
> > > > 468f1000-468f8000 r-xp 00000000 08:01 194 /usr/lib/libgcc_s.so.1
> > > >
> > > > 468f8000-468f9000 rw-p 00007000 08:01 194 /usr/lib/libgcc_s.so.1
> > > > 468f9000-468ff000 r-xp 00000000 08:01 52949
> /usr/lib/libungif.so.4.1.2
> > > > 468ff000-46900000 rw-p 00006000 08:01 52949
> /usr/lib/libungif.so.4.1.2
> > > >
> > > > 46900000-469fb000 rw-p 000c4000 00:00 0
> > > > 469fb000-46a00000 ---p 000e5000 00:00 0
> > > > 46a00000-46af4000 r-xp 00000000 08:02 1019
> > /usr/local/lib/libmapscript.so
> > > > 46af4000-46af8000 rw-p 000f3000 08:02 1019
> > /usr/local/lib/libmapscript.so
> > > >
> > > > 46af8000-46afa000 rw-p 00000000 00:00 0
> > > > 46afa000-46b5b000 r-xp 00000000 08:02 1035
> > > > /usr/local/lib/libfreetype.so.6.3.10
> > > > 46b5b000-46b5e000 rw-p 00061000 08:02 1035
> > > > /usr/local/lib/libfreetype.so.6.3.10
> > > >
> > > > 46b5e000-46b8e000 r-xp 00000000 08:01 210 /usr/lib/libpng.so.3.1.2.8
> > > > 46b8e000-46b8f000 rw-p 0002f000 08:01 210 /usr/lib/libpng.so.3.1.2.8
> > > > 46b8f000-46bc4000 r-xp 00000000 08:02 383
> > /usr/local/lib/libproj.so.0.5.0
> > > >
> > > > 46bc4000-46bc6000 rw-p 00035000 08:02 383
> > /usr/local/lib/libproj.so.0.5.0
> > > > 46bc6000-46edd000 r-xp 00000000 08:02 4586
> > > > /usr/local/lib/libgdal.so.1.10.0
> > > > 46edd000-46f32000 rw-p 00316000 08:02 4586
> > > > /usr/local/lib/libgdal.so.1.10.0
> > > >
> > > > 46f32000-46f47000 rw-p 00000000 00:00 0
> > > > 46f47000-46fe2000 r-xp 00000000 08:01 141965
> /usr/lib/libstdc++.so.5.0.6
> > > > 46fe2000-46ff9000 rw-p 0009b000 08:01 141965
> /usr/lib/libstdc++.so.5.0.6
> > > > 46ff9000-46ffe000 rw-p 00000000 00:00 0
> > > >
> > > > 46ffe000-4700c000 r-xp 00000000 08:01 69690
> > /usr/X11R6/lib/libXpm.so.4.11
> > > > 4700c000-4700d000 rw-p 0000e000 08:01 69690
> > /usr/X11R6/lib/libXpm.so.4.11
> > > > 4700d000-470d3000 r-xp 00000000 08:01 69832
> /usr/X11R6/lib/libX11.so.6.2
> > > >
> > > > 470d3000-470d7000 rw-p 000c6000 08:01 69832
> /usr/X11R6/lib/libX11.so.6.2
> > > > 470d7000-470fa000 r-xp 00000000 08:01 69699
> > > > /usr/X11R6/lib/libfontconfig.so.1.0.4
> > > > 470fa000-470fd000 rw-p 00022000 08:01 69699
> > > > /usr/X11R6/lib/libfontconfig.so.1.0.4
> > > >
> > > > 470fd000-470fe000 rw-p 00000000 00:00 0
> > > > 470fe000-4712e000 r-xp 00000000 08:01 184
> /usr/lib/libpng12.so.0.1.2.8
> > > > 4712e000-4712f000 rw-p 0002f000 08:01 184
> /usr/lib/libpng12.so.0.1.2.8
> > > > 4712f000-4724f000 r-xp 00000000 08:02 4327
> > > > /usr/local/lib/libNCSEcw.so.0.0.0
> > > >
> > > > 4724f000-47258000 rw-p 00120000 08:02 4327
> > > > /usr/local/lib/libNCSEcw.so.0.0.0
> > > > 47258000-47265000 rw-p 00000000 00:00 0
> > > > 47265000-47279000 r-xp 00000000 08:02 4339
> > > > /usr/local/lib/libNCSCnet.so.0.0.0
> > > >
> > > > 47279000-4727a000 rw-p 00014000 08:02 4339
> > > > /usr/local/lib/libNCSCnet.so.0.0.0
> > > > 4727a000-47299000 r-xp 00000000 08:02 4334
> > > > /usr/local/lib/libNCSUtil.so.0.0.0
> > > > 47299000-4729b000 rw-p 0001e000 08:02 4334
> > > > /usr/local/lib/libNCSUtil.so.0.0.0
> > > >
> > > > 4729b000-4729c000 rw-p 00000000 00:00 0
> > > > 4729c000-472e7000 r-xp 00000000 08:01 52823
> /usr/lib/libtiff.so.3.7.1
> > > > 472e7000-472e9000 rw-p 0004a000 08:01 52823
> /usr/lib/libtiff.so.3.7.1
> > > >
> > > > --------------- S Y S T E M ---------------
> > > >
> > > >
> > > > OS:Linux
> > > > uname:Linux 2.4.29 #25 Thu Jan 20 17:21:56 PST 2005 i686
> > > > libc:glibc 2.3.4 linuxthreads-0.10 (fixed stack)
> > > > rlimit: STACK 2044k, CORE 0k, NPROC 7168, NOFILE 1024, AS infinity
> > > > load average:3.44 2.84
> > > >  1.27
> > > >
> > > > CPU:total 1 family 15, cmov, cx8, fxsr, mmx, sse, sse2, ht
> > > >
> > > > Memory: 4k page, physical 904220k(52168k free), swap
> 2097136k(1994124k
> > free)
> > > >
> > > > vm_info: Java HotSpot(TM) Client VM (1.5.0_06-b05) for linux-x86,
> built
> > on
> > > > Nov 10 2005 12:08:33 by java_re with gcc
> > > > 3.2.1-7a (J2SE release)
> > > >
> > > >
> > > >
> > > > --
> > > > "Everything under the sun is in tune
> > > > But the sun is eclipsed by the moon"
> > >
> >
> >
> >
> > --
> >
> >  "Everything under the sun is in tune
> > But the sun is eclipsed by the moon"
>

-- 
"Everything under the sun is in tune
But the sun is eclipsed by the moon"
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