unhandled exceptin : Unhandled Memory Exception

BlitzMax Forums/BlitzMax Programming/unhandled exceptin : Unhandled Memory Exception

Insane Games (Posted 2005) [#1]

hy :) i was programming and found it unhandled exceptin : Unhandled Memory Exception Error can anyone tell what is this? Because i'm lost! don't know if it's a internal blitzmax error or mine. Thanks :)

tonyg (Posted 2005) [#2]

Have you got debug switched on for a better error or any example code?

Insane Games (Posted 2005) [#3]

ok, i've two lines inside a method blitzmax shows this error on the first line, if i comment the first line, it shows the same error in the second, if i comment the second, and add a third line, it shows the same error at the third line!!! i just don't know what's is it.. the code is big, a lot of bmx files, etc... lolz.. i dun know ... really dun thx

Tom (Posted 2005) [#4]

Paste the offending lines here, else no one can help.

Scott Shaver (Posted 2005) [#5]

I think there are a large number of posible causes for this, not all of them have to due with memory. For instance I had a divide by zero bug that caused the same error message. It was neccessary to put in print statements to find where the program was acutally bombing out. For fun if you are using FlushMem comment it out, if you aren't using it put it in the main program loop. Just to see if it makes a difference.

Insane Games (Posted 2005) [#6]

well i've verified and i'm not makin division by 0.. i've already have commented and uncommented the flushmem lines.. and the error continues i've tried the print statements and it just showed me that the error is inside a single method that calls another two! because if i comment it, the error not happens anymore. But i'll have a NullPointer... =/ the lines are inside that method Method initGame () Print "a" Self.adminDepartament = AdminDepartament.createAdminDepartament( Size.createSize( 10, 10 ) ) Print "b" Self.clock = Clock.createClock( NORMAL ) Print "c" EndMethod and it justs prints "a" but if inside the method createAdminDepartament i put some print at the first line of it, it's NOT printed!!! it's like blitzmax abort the execution when the method is called... i just can't understand... thx :)

Sweenie (Posted 2005) [#7]

I get these all the time. Very common when working with external functions which tries to write to "forbidden" parts of the memory due to passing faulty pointers or external functions using the wrong calling convention. External functions using the wrong calling convention can be tricky to spot sometimes since they can actually be called a couple of times until the stack is messed up.

Scott Shaver (Posted 2005) [#8]

I'd say that you might be getting a null pointer reference in the Size.createSize() call. put some print statements in there to see if it gets all the way through.

Insane Games (Posted 2005) [#9]

thx for the tip but i'm have verified and i'm not getting a null pointer in Size.createSize(). should i contact mark? lolz thx

regaa (Posted 2005) [#10]

Also you should have all included files open in the ide, otherwise the debugger won t mark the error line if the error is in a file which is closed. It took time for me to realize that, lol.

skidracer (Posted 2005) [#11]

Double clicking on the entries in the debug window will open the file with the offending line. From personal experience I would check to see if you forgot a Return statement in your CreateSize function / method.

Insane Games (Posted 2005) [#12]

ok guys I've tried oppened ALL the files and error continues without logical cause... I've verified all the methods that returns something and ALL the returns are there!!! no one missing!!! i can't understand... =/ thx

skidracer (Posted 2005) [#13]

put in a temporary variable like so and at the debugstop you can check to see what your variables are doing local size:TSize=Size.createSize( 10, 10 ) debugstop Self.adminDepartament=AdminDepartament.createAdminDepartament( size ) also, use Strict at the top of your program to avoid spelling mistakes and don't call your type and your instances the same name - (blitzmax is not case sensitive so adminDepartament and AdminDepartament are exactly the same token and so could mean a variety of things in the code above) Perhaps you meant to write Self.adminDepartament=TAdminDepartament.createAdminDepartament( size ) which would use the Type and not the uninitialized instance to locate the createAdminDepartament Function (it surely is not a method???)

Insane Games (Posted 2005) [#14]

ok i used the DebugStop now and before it too... and all the values of variables are all correct!!! the Strict appears at the top of all files!!! yes it is a Function.. i've already verified it too... for all types envolved. i tried the TAdminDepartament and BlitzMax do not even compiled it. It said that the identifier TAdminDepartament wasn't found. i'm lost... thx

skidracer (Posted 2005) [#15]

Call your Type TAdminDepartment and your field AdminDepartment that way BlitzMax knows exactly what you are referring to. At the moment I think the compiler suspects you are actually wanting: self.AdminDepartment=Self.AdminDepartment.CreateAdminDepartment() which is causing a null pointer because the right hand side is using the null Self.AdminDepartment field not the TAdminDepartment type to locate the CreateAdmin function.

Insane Games (Posted 2005) [#16]

thx i've tried it too, using self.AdminDepartment=Self.AdminDepartment.CreateAdminDepartment() but the error continue... =/

BlitzSupport (Posted 2005) [#17]

Did you change the name of the type and the field like Skids suggested?

Insane Games (Posted 2005) [#18]

yes i have and the error continues...

skidracer (Posted 2005) [#19]

sorry I was a bit ambiguous, what you do want to do is this: self.AdminDepartment=TAdminDepartment.CreateAdminDepartment()

Insane Games (Posted 2005) [#20]

me? i have an atribute (field) in my class (type) called adminDepartment : AdminDepartment when im calling AdminDepartment.CreateAdminDepartment() the function CreateAdminDepartment() returns me a new AdminDepartament instance. :)

Insane Games (Posted 2005) [#21]

So, i put all my files in a host (http://www.insanegames.v10.com.br/all.zip) please, cold anyone help me, this is to my final project and i don't wanna convert to java (and learn java 2d...) Please! Tks by now! PS: The code is written in Brazilian Portuguese...

Sweenie (Posted 2005) [#22]

Check the change of the typename in the code below... Jogo.bmx 'Jogo ' @author Daniel Castro Scapin ' 'Abriga, controla e atualiza elementos lógicos chaves ' 'Depende: ' DepartamentoAdministrativo (administração da lógica do jogo) ' Relogio (tempo relativo do jogo ao real) ' Atualizador (atualização gráfica e lógica) Strict Import "DepartamentoAdministrativo.bmx" Import "Relogio.bmx" Import "Atualizador.bmx" Type Jogo Field departamentoAdministrativo : TDepartamentoAdministrativo Field relogio : Relogio 'Private 'horas inicial e final do dia Const RELOGIO_INICIAL : String = "07:00:00" Const RELOGIO_FINAL : String = "12:00:00" 'Private 'velocidades do jogo Const RAPIDO : Float = 0.0001 Const NORMAL : Float = 0.001 Const LENTO : Float = 0.01 'Construtor Function criarJogo : Jogo () Local myjogo : Jogo = New Jogo myjogo.inicializarJogo() Return myjogo EndFunction Method inicializarJogo () 'cria um deptoAdm que tem um mapa de tamanho dado Local tam:Tamanho = Tamanho.criarTamanho( 10, 10 ) Self.departamentoAdministrativo = TDepartamentoAdministrativo.criarDepartamentoAdministrativo(Tam) Self.relogio = Relogio.criarRelogio( NORMAL ) EndMethod 'Private Method atualizar () Atualizador.atualizar( departamentoAdministrativo, relogio ) relogio.atualizar() 'quando a hora final é atingida o estado das estruturas é 'atualizado If( relogio.estaIgual( RELOGIO_FINAL ) ) Then departamentoAdministrativo.atualizarEstruturas() relogio.setRelogioIgual( RELOGIO_INICIAL ) EndIf EndMethod 'Public Method aumentarVelocidade() relogio.setSegundoImaginario( Max( RAPIDO, relogio.getSegundoImaginario()/10 ) ) EndMethod Method diminuirVelocidade() relogio.setSegundoImaginario( Min( LENTO, relogio.getSegundoImaginario()*10 ) ) EndMethod Method normalizarVelocidade() relogio.setSegundoImaginario( NORMAL ) EndMethod Method executar () FlushKeys While Not KeyHit( KEY_ESCAPE ) Cls atualizar() Flip FlushMem Wend FlushMem EndMethod EndType DepartamentoAdministrativo.bmx 'DepartamentoAdministrativo ' 'O Objetivo desse tipo é nos fornecer o numero total de alunos matriculados na escola, e a 'capacidade de poder matricular e desmatricular algum aluno ' 'dependencia ' NotaGradual ' Secretaria ' SalaDeAula ' Horario ' Relatorio ' Aluno ' Professor ' NPC ' Mapa ' Relogio ' Strict Import "Secretaria.bmx" Import "Horario.bmx" Import "Relatorio.bmx" Import "NotaGradual.bmx" Import "Aluno.bmx" Import "Mapa.bmx" Import "Construtor.bmx" Import "Relogio.bmx" Type TDepartamentoAdministrativo 'Atributos 'compõe o departamento, necessária para a existencia desse Field secretaria : Secretaria 'grade das Listas de escalacao dos professores para as salas Field horario : Horario 'relatorio com informações sobre a escola Field relatorio : Relatorio 'nota atribuida a escola pelo MinisterioDaEducacao Field notaGradual : NotaGradual 'privado, serve para proporcionar a construcao de Estruturas Field mapa : Mapa 'Construtor Function criarDepartamentoAdministrativo : TDepartamentoAdministrativo( areaMapa : Tamanho ) Local departamento : TDepartamentoAdministrativo = New TDepartamentoAdministrativo departamento.inicializarDepartamentoAdministrativo( areaMapa ) Return departamento EndFunction Method inicializarDepartamentoAdministrativo( areaMapa : Tamanho ) Self.secretaria = Secretaria.criarSecretaria() Self.horario = Horario.criarHorario() Self.notaGradual = NotaGradual.criarNotaGradual() 'inicia com nota média Self.mapa = Mapa.criarMapa( areaMapa.getLargura(), areaMapa.getAltura() ) Self.gerarRelatorio() EndMethod 'Setters e Getters Method getSecretaria : Secretaria () Return secretaria EndMethod Method getHorario : Horario () Return horario EndMethod Method setHorario ( horario : Horario ) Self.horario = horario EndMethod Method getRelatorio : Relatorio () Return Relatorio EndMethod Method gerarRelatorio () Self.relatorio = Relatorio.criarRelatorio( secretaria.getNumeroDeAlunos(), secretaria.getNumeroDeProfessores() ) EndMethod Method getNotaGradual : NotaGradual () Return notaGradual EndMethod Method setNotaGradual ( nota : NotaGradual ) Self.notaGradual = nota EndMethod Method getMapa : Mapa () Return mapa EndMethod 'adiciona uma estrutura ao Mapa Method adicionarEstrutura ( estrutura : Estrutura ) Construtor.construir( estrutura, mapa ) EndMethod Method atualizarEstruturas () For Local linha : Int = 0 To mapa.getTamanho().getLargura()-1 For Local coluna : Int = 0 To mapa.getTamanho().getAltura()-1 Local terreno : Terreno = mapa.getTerreno( linha, coluna ) If( ( Not terreno.estaVazio() ) And ( Not terreno.ocupadoPorTerreno() ) ) Then terreno.getOcupador().getEstado().proximoEstado() EndIf Next Next EndMethod EndType You will have to change the secreteria.bmx file as well since you will get the same error on that... Basically the problem is that you shouldn't have a type field with the same name as an existing type... like this line... Field secretaria : Secretaria

Insane Games (Posted 2005) [#23]

yeah!!! :D thx that was the problem: "Basically the problem is that you shouldn't have a type field with the same name as an existing type..." thank you all for helping us out :D :)))

Insane Games (Posted 2005) [#24]

ps: the code was removed from the server... when we finish the game it'll be opensource :)) and we'll public it here!!! ths a lot again :D

Sweenie (Posted 2005) [#25]

Actually, it's what skidracer suggested all along but I guess you misunderstood him. :)

nikolai (Posted 2005) [#26]

Crazy !! I have the same problem !! Thank to this post I found the bug