Solved

Memory leak

Posted on 2008-09-29
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Last Modified: 2010-04-15
Experts,

I've developed a service which works fine, however I've noticed the memory usage for the application (whilst there are no processes taking place) incrememt slowly, by about 6k every seven seconds.

I'm concerned that this may cause problems in the long term, and I'd like to find out what could be causing this.  

Should I consider setting the variables to null after the program cycle (while true loop) has completed?
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Question by:mhouldridge
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7 Comments
 
LVL 21

Expert Comment

by:silemone
ID: 22596574
Actually, you should consider not only setting them to null, but also disposing of them whenever possible
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LVL 15

Expert Comment

by:angus_young_acdc
ID: 22596598
Yes where possible if you're not using something you should dispose it.  Certain things don't look like they would cause a problem but if you have a constantly running loop, and objects are being used and then not disposed of, they will simply all be "dumped" into a big pile, and then after the next loop that lot will go in the "pile", and so on.  Basically adding up to a lot of cost and wasted memory.
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Author Comment

by:mhouldridge
ID: 22596678
Hi,

Thanks for the info.  I get problems with integers, attempting to set to null....

With Cannot convert to null error.

Is there a generic method for settings variables of any type to null.
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LVL 15

Accepted Solution

by:
angus_young_acdc earned 500 total points
ID: 22596836
There certainly is, here is an example:
int? myIntger = 3;  // Declare the integer with a ? to state that its nullable

myIntger = null; // Then you can just set it to null when necessary
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LVL 21

Expert Comment

by:silemone
ID: 22596851
if your integers are not nullabe, then you can only set them to 0...null is only for objects...
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LVL 21

Expert Comment

by:silemone
ID: 22596870
as angus has shown, making integer type nullable or any primative, you must add a ? behind it...
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Author Comment

by:mhouldridge
ID: 22596899
Hi,

Thanks for the info guys...

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