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How to free memory properly in Lua autoAssemble?

 
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Jane
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PostPosted: Fri Jul 21, 2017 3:47 pm    Post subject: How to free memory properly in Lua autoAssemble? Reply with quote

I've been told before that dealloc does not work in autoAssemble disable section string, if this is the case then how can I free the memory allocated in the first section

Would this work?

Code:

function enable()
    autoAssemble([[
 
    alloc(hook,124)
    registersymbol(hook)
    //etc..

    ]])
end

function disable()
    autoAssemble([[

    unregistersymbol(hook)

    ]])

    deAlloc('hook')
end
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panraven
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PostPosted: Fri Jul 21, 2017 4:12 pm    Post subject: Reply with quote

Try search "disableinfo".
eg. http://forum.cheatengine.org/viewtopic.php?t=604767#5726898

Note that in ce 6.7 with disableinfo, the autoAssemble script can be exactly same in a memory record with [ENABLE]/[DISABLE]section, except the 'memrec' variable in Lua block {$lua}.

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mgr.inz.Player
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PostPosted: Fri Jul 21, 2017 4:52 pm    Post subject: Re: How to free memory properly in Lua autoAssemble? Reply with quote

deAlloc, it is the oldest solution since CE6.5, it should do the trick. But, it is not perfect if you have more than one alloc.


e.g. you have this memory record AA script:
Code:
[ENABLE]
alloc(InfiniteHealth,2048,BlackOps3.exe)
aobscanmodule(InfiniteHealthAOB,BlackOps3.exe,8B 83 C8 02 00 00 48 8B)
registersymbol(InfiniteHealthAOB)
label(return)

InfiniteHealth:
  mov [rbx+000002C8],#999
  jmp return

InfiniteHealthAOB:
  jmp InfiniteHealth
  nop
return:

[DISABLE]
InfiniteHealthAOB:
  db 8B 83 C8 02 00 00

unregistersymbol(InfiniteHealthAOB)

dealloc(InfiniteHealth)



version with deAlloc will look like this:
Code:
InfiniteHealth_enable = [[
alloc(InfiniteHealth,2048,BlackOps3.exe)
label(InfiniteHealthUserSymbol)
registersymbol(InfiniteHealthUserSymbol)

aobscanmodule(InfiniteHealthAOB,BlackOps3.exe,8B 83 C8 02 00 00 48 8B)
registersymbol(InfiniteHealthAOB)
label(return)

InfiniteHealth:
InfiniteHealthUserSymbol:
  mov [rbx+000002C8],#999
  jmp return

InfiniteHealthAOB:
  jmp InfiniteHealth
  nop
return:
]]

InfiniteHealth_disable = [[
InfiniteHealthAOB:
  db 8B 83 C8 02 00 00

unregistersymbol(InfiniteHealthAOB)
]]

function enableInfiniteHealthCheat()
  if not InfiniteHealthCheatIsEnabled then
    InfiniteHealthCheatIsEnabled = autoAssemble(InfiniteHealth_enable)
  end
end

function disableInfiniteHealthCheat()
  if InfiniteHealthCheatIsEnabled then
    if autoAssemble(InfiniteHealth_disable) then
      deAlloc('InfiniteHealthUserSymbol')
      unregisterSymbol('InfiniteHealthUserSymbol')
      InfiniteHealthCheatIsEnabled = false
    end
  end
end








With CE6.7, this:
Code:
InfiniteHealthScript = [[
[ENABLE]
alloc(InfiniteHealth,2048,BlackOps3.exe)
aobscanmodule(InfiniteHealthAOB,BlackOps3.exe,8B 83 C8 02 00 00 48 8B)
registersymbol(InfiniteHealthAOB)
label(return)

InfiniteHealth:
  mov [rbx+000002C8],#999
  jmp return

InfiniteHealthAOB:
  jmp InfiniteHealth
  nop
return:

[DISABLE]
InfiniteHealthAOB:
  db 8B 83 C8 02 00 00

unregistersymbol(InfiniteHealthAOB)

dealloc(InfiniteHealth)
]]

function enableInfiniteHealthCheat()
  if not InfiniteHealthCheatIsEnabled then
    InfiniteHealthCheatIsEnabled,InfiniteHealthCheatDisableinfo = autoAssemble(InfiniteHealthScript)
  end
end

function disableInfiniteHealthCheat()
  if InfiniteHealthCheatIsEnabled then
    if autoAssemble(InfiniteHealthScript,InfiniteHealthCheatDisableinfo) then
      InfiniteHealthCheatIsEnabled = false
    end
  end
end

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Last edited by mgr.inz.Player on Fri Jul 21, 2017 5:04 pm; edited 3 times in total
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dl748
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PostPosted: Fri Jul 21, 2017 4:52 pm    Post subject: Reply with quote

I've found this to be cumbersome. I generally use allocateSharedMemory(), I can't wait until deallocateShareMemory() works but right now, I do a single allocation and just reuse when needed.
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Jane
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PostPosted: Fri Jul 21, 2017 6:15 pm    Post subject: Reply with quote

Thanks guys didn't know about disableinfo being added, works as intended
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