Return report allocated memory

Hi,

thank you very much. It hleped indeed.

Kind regards,

Maik

Hi Fernando,

may anyone correct me if I'm wrong, but here is my idea:

Increasing jvm's memory will not directly help returning allocated memory. But a little JVM tuning can make the garbage collection via the Xms and Xmn parameters more efficient (look here for example: http://www.caucho.com/resin-3.0/performance/jvm-tuning.xtp).

The ARIS installation and administrationguide(unfortunatly only the german one) lists some hints on memory optimization within the scripting chapter:

•  Keep no lists of ARIS objects in global Variables.
•  With the help of "short" functions data is kept only as long as needed.
•  It is advisable to empty lists containing many objects, if they are no longer needed.

Not really helpful in my opinion. Anyway, I don't know if the garbage collection is working properly for ARIS reports. It's supposed to return memory of an object if there is no reference to this object left(garbage collection by reference).

But there is something else you can try:

Use the delete operator for (global) lists of objects. There is only one problem: It is impossible to delete objects with the DontDelete-Attribute set, such as variable and function declarations in global and function code. So you have to use a little workaround to do so.

First of all: the delete operater returns true if the deletion was successful respectively false if the deletion failed. So here is an Example:

var globalModelList = new Array();
function main(){
    var selectedGroups = ArisData.getSelectedGroups();
    globalModelList = getModelsMatchingCertainCriteriaOutOf(selectedGroups);
    // DO SOMETHING WITH globalModellist
    delete selectedGroups; // false 
    typeof(selectedGroups); // object
}
// other code 
main();
delete globalModelList; // false
typeof(globalModelList); // object

What you have to do is setting variables explicitly as a an object's property. Look at the different use of selectedGroups in the following snippit:

var globalModelList = new Array();
function main(){
    var localVariablesObject = new Object();
    localVariablesObject.selectedGroups = ArisData.getSelectedGroups();
    globalModelList = getModelsMatchingCertainCriteriaOutOf(localVariablesObject.selectedGroups);
    // DO SOMETHING WITH globalModellist
    delete localVariablesObject.selectedGroups; // true 
    typeof(localVariablesObject.selectedGroups); // undefined
}
// other code
main();
delete globalModelList; // false
typeof(globalModelList); // object

Now can do the same with globalModelList, except that you don't have to create a variable object, because you already got one(this).

var GLOBAL_OBJECT = this;
GLOBAL_OBJECT.globalModelList = new Array();
function main(){
    var localVariablesObject = new Object();
    localVariablesObject.selectedGroups = ArisData.getSelectedGroups();
    globalModelList = getModelsMatchingCertainCriteriaOutOf(localVariablesObject.selectedGroups);
    // DO SOMETHING WITH globalModellist
    delete localVariablesObject.selectedGroups; // true 
    typeof(localVariablesObject.selectedGroups); // undefined
}
// other code
main();
delete globalModelList; // true
typeof(globalModelList); // undefined

Let me know, if this is of any help to you.

Regards,

Maik