November 18, 2008 02:34pm pst

1. TheLearn... 407,610
2. jaime_oliv... 375,605
3. Fernando... 274,481
4. Dhaest 149,323
5. p_davis 136,515
6. angelIII 130,230
7. philipjonat... 121,970
8. emoreau 116,052
9. Idle_Mind 113,737
10. graye 104,930
11. ragi0017 103,883
12. ShazbotOK 94,470
13. ororiole 93,514
14. naspinski 92,990
15. prairiedog 89,048
16. jcoehoorn 85,290
17. ZachSmith 83,600
18. BondinASP 82,007
19. gregoryyo... 80,665
20. TechTiger... 78,963
21. GreenGho... 70,920
22. jandromeda 70,285
23. jpaulino 67,265
24. BillyDvD 65,415
25. margajet24 62,348

1. TheLearn... 636,084
2. jaime_oliv... 551,572
3. Fernando... 357,708
4. p_davis 208,900
5. gregoryyo... 208,715
6. Dhaest 183,123
7. Idle_Mind 174,827
8. angelIII 169,780
9. emoreau 148,609
10. gauthampj 127,805
11. graye 125,780
12. philipjonat... 121,970
13. JimBrandley 117,431
14. ragi0017 110,883
15. ShazbotOK 107,638
16. GreenGho... 104,910
17. jcoehoorn 101,915
18. dstanley9 100,134
19. surajguptha 98,150
20. ororiole 93,514
21. naspinski 92,990
22. prairiedog 89,548
23. ZachSmith 83,600
24. BondinASP 82,007
25. TechTiger... 79,563

12.04.2007 at 03:34PM PST, ID: 23001814

	[x] Attachment Details

[x]

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6.6

Need to Solve Memory Leak with CodeDom/Need to find out how to use AppDomain to unload Asslembly

Asked by Steelsteed in Microsoft Visual C#.Net, Visual Studio, .NET Framework 2.x

Tags: leak, memory, appdomain, codedom

Hi,

I have the created the class shown in the code snippet from various sources around the net. The code is supposed to give me a class that I can use to evaluate Javascript on the fly.

Sample usage is

private Evaluator eval = new Evaluator();
string x=eval.EvalJScript("(6*5)/3");

the variable x will get the value of 10. as you can see, this is very useful for quite a number of things. This code works very well to do what I need, however I am getting a problem. Every Time I create a new Evaluator Class, its loading a new assembly into the app, and so after a while, a huge amount of memory is being leaked and wasted. Considering I am using this from within an asp.net app, after a while the asp.net process uses too much memory and gets recycled. What I need is to find a way to unload the assembly when I am finished with it. I have been reading around the net and have discovered that you are supposed to create a seperate AppDomain, load the assembly created by CodeDom into this AppDomain, and then destroy this seperate AppDomain when finished to force the unload of the assembly. My problem now is I have found no help on how to actually do this with my code below. Can anyone help or give an example on how I may achieve this with my code.

Many Thanks,

Steed.Start Free Trial

         
           
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             public class Evaluator
    {
        Type evaluatorType;
        object evaluator;
 
        public string EvalJScript(string JScript)
        {
            return evaluatorType.InvokeMember("Eval", BindingFlags.InvokeMethod, null, evaluator, new object[] { JScript }).ToString();
        }
 
 
        public Evaluator()  //class constructor
        {
            string JScriptSource =
            @"package Evaluator
            {
            class Evaluator
            {
            public function Eval(expr : String) : String
            {
            return eval(expr, ""unsafe"");
            }
            }
            }";
 
            CodeDomProvider compiler = CodeDomProvider.CreateProvider("JScript");
            CompilerParameters parameters = new CompilerParameters();
            parameters.CompilerOptions = "/t:library";
            parameters.GenerateInMemory = true;
            CompilerResults results = compiler.CompileAssemblyFromSource(parameters, JScriptSource);
            Assembly assembly = results.CompiledAssembly;
            evaluatorType = assembly.GetType("Evaluator.Evaluator");
            evaluator = Activator.CreateInstance(evaluatorType);
        }
 
    }

           
         

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Need to Solve Memory Leak with CodeDom/Need to find out how to use AppDomain to unload Asslembly

Asked by Steelsteed in Microsoft Visual C#.Net, Visual Studio, .NET Framework 2.x

Tags: leak, memory, appdomain, codedom

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