LlSetMemoryLimit

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Summary

Function: integer llSetMemoryLimit( integer limit );

Request limit bytes to be reserved for this script.
Returns the integer TRUE or FALSE indicating if the memory limit was set.

• integer limit

Specification

This function's behavior is dependent upon the VM the script is using. Mono is the new VM, LSO is the old VM.

Mono
Sets the memory limit for the script.
  • The memory limit can be set up to 64k.
  • The memory limit can not be set lower than the memory currently in use by the script.
  • All new scripts start with a limit of 64k
  • All existing scripts have a limit of 64k
  • A lower limit will effect the amount of memory reported in the viewer UI and by llGetObjectDetails.
  • The memory limit is not the amount of real memory actually used by the script, just the upper limit on it.
LSO
Has no effect on LSO scripts which will always use exactly 16k

Caveats

Mono
llSetMemoryLimit(n) is ignored and 64KBytes will be the memory limit, when n is too small
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Examples

<lsl> // Memory-walkthrough by Daemonika Nightfire (daemonika.nightfire)

integer limit = 20000; // <- bytes

Test() {

   llSetText("Limited Memory " + (string)llGetMemoryLimit() +
             "\nUsed Memory " + (string)llGetUsedMemory() +
             "\nFree Memory " + (string)llGetFreeMemory(),<1,1,1>,1);

}

default {

   state_entry()
   {
       llSetMemoryLimit(limit);
       
       llScriptProfiler(PROFILE_SCRIPT_MEMORY);
       Test();
       llScriptProfiler(PROFILE_NONE);
       
       llSay(0,"This script used at most " + (string)llGetSPMaxMemory() + " bytes of memory during Test.");
   }

}

// Result:

// Floating Text: // Limited Memory 20000 // Used Memory 4972 // Free Memory 15100

// Chat: // [05:11] Object: This script used at most 4972 bytes of memory during Test.

</lsl>

See Also

Functions

•  llGetFreeMemory
•  llGetUsedMemory
•  llGetObjectDetails

Deep Notes

History

  • Scheduled for RC Magnum channel, week of August 3, 2011.

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Signature

function integer llSetMemoryLimit( integer limit );