Problems with querybypoint and shapelib

[Fernando Simon]

Hi,
    You can use the "synchronized" in your code to guarantee that only
one thread access the source of data.
    Best regards.

Fernando Simon


Umberto Nicoletti wrote:
> How did you compile mapserver and java mapscript (give the configure
> arguments exactly)? Did you use the -use-threads argument?
>
> Have you read the docs on mapserver web site (search for java):
> http://mapserver.gis.umn.edu/docs/howto/javamapscript ?
>
> Regards,
> Umberto
>
>
>
> On 6/1/06, Frederico Lucca <fredlucca at gmail.com> wrote:
>> Hello list,
>>
>> After a couple of request at same time my Tomcat broke with this error:
>>
>> # Java VM: Java HotSpot(TM) Server VM (
>> 1.5.0_06-b05 mixed mode)
>>
>> # Problematic frame:
>> # C [libc.so.6+0x6c91c] mempcpy+0x1c
>> #
>>
>> --------------- T H R E A D ---------------
>>
>> Current thread (0x6d049348): JavaThread "http-8080-Processor23" daemon
>> [_thread_in_native, id=11434]
>>
>>
>> siginfo:si_signo=11, si_errno=0, si_code=1, si_addr=0x00000000
>>
>> Stack: [0x6c06d000,0x6c0ee000), sp=0x6c0ebad4, free space=506k
>> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code,
>> C=native
>> code)
>>
>> C [libc.so.6+0x6c91c] mempcpy+0x1c
>> C [libc.so.6+0x60b08] _IO_sgetn+0x28
>> C [libc.so.6+0x5548e] _IO_fread+0x8e
>> C [libmapscript.so+0x6b968] msSHPOpen+0x478
>> C [libmapscript.so+0x6bba5] msSHPOpenFile+0x55
>>
>> C [libmapscript.so+0x6bdce] msShapeFileLayerOpen+0x8e
>> C [libmapscript.so+0x95341] msLayerOpen+0x61
>> C [libmapscript.so+0x86362] msQueryByPoint+0x172
>> C [libmapscript.so+0x57f4d] layerObj_queryByPoint+0x4d
>>
>> C [libmapscript.so+0x57fc1]
>> Java_edu_umn_gis_mapscript_mapscriptJNI_layerObj_1queryByPoint+0x61
>> j
>> edu.umn.gis.mapscript.mapscriptJNI.layerObj_queryByPoint(JJJID)I+0
>>
>> --------------- S Y S T E M ---------------
>>
>>
>> OS:Mandriva Linux release 2007.0 (Cooker) for i586
>>
>> uname:Linux 2.6.16-1mdksmp #1 SMP Fri May 19 19:16:59 CEST 2006 i686
>> libc:glibc 2.4 NPTL 2.4
>>
>>
>> I have already heard about a problem with swig and java, how can I
>> fix it if
>> this is the problem?
>>
>> Could somebody help me?
>>
>> Thanks in advance,
>>
>> Fred
>>
>>
>> -- 
>> "Everything under the sun is in tune
>> But the sun is eclipsed by the moon"
>>
>