Robert,
I am using version osg 1.2 on Red Hat Linux Enterprise 4. I am using "top" or System Monitor to monitor the growth in how much memory is being used.
I have a test case where my driver calls the routine osgpick, which is a modified osgpick.cpp where the main was changed to osgpick.
After the viewer comes up, I hit escape which causes the viewer to go away and return to the driver. The driver then sleeps for 3 seconds so I can check if the memory usage has change and it hasn't, it is still ~90mb. I then call osgpick again and the memory usage grows by ~80mb. In the driver below you'll see what my test is:
#include "osgpick.h"
#include <stdio.h>
int main( int argc, char **argv )
{
int returnValue;
returnValue = osgpick( argc, argv );
sleep(3);
returnValue = osgpick( argc, argv );
return 0;
}
What I want to do and what OpenSceneGraph is used for may be two different things. The intent of our application was to use OpenSceneGraph to view a 3d Model of building and to get the x,y,z information on a building model to place another model. The position information and normal information is then passed onto another routine which uses this information. The viewer was to be initiated after choosing a building to view on a 2d map. We would be looking at many different buildings, so the thought was that we would open and closing the viewer as needed.
I am asking these questions not to accuse OpenSceneGraph of Memory Leaks, but to try and understand if there is something I am doing wrong, or if I can not use OpenSceneGraph as was initially intended.
Thank you for your response,
Chris Kosek
From: "Robert Osfield" <[EMAIL PROTECTED]>
Reply-To: osg users <[email protected]>
To: "osg users" <[email protected]>
Subject: Re: [osg-users] Memory usage keeps growing
Date: Wed, 25 Apr 2007 15:57:28 +0100
>Hi Chris,
>
>The OSG in general doesn't suffer from memory leaks, as memory is
>pretty reliably managed by osg::ref_ptr<>/osg::Referenced support
>for
>ref counting.
>
>You usage model isn't clear to me, and I don't know what OS, version
>of the OSG, version of the viewer classes that you are using, or
>what
>tools you are using which indicate that memory usage is growing.
>
>Robert.
>
>On 4/25/07, Chris and Heather Kosek <[EMAIL PROTECTED]> wrote:
>>
>>
>>Hello,
>>
>>I noticed when I call the osgpick example from a driver the memory
>>used does
>>not go away until the process goes away and not when the viewer
>>goes away.
>>The memory usage grows by ~80 mb each time I call osgpick. There
>>seems to
>>be no cleanup when the viewer closes. Can I use osg in this
>>manner?
>>
>>I am trying to use OpenSceneGraph in the following manner;
>>
>>1. Calling it from another routine (works)
>>
>>2. Passing it an model filename (works)
>>
>>3 Displaying the building model in the viewer (works)
>>
>>4. Getting the x,y,z intersect of a point the wall of the building
>>(works)
>>
>>5. Placing a model at and x,y,z with the model having the proper
>>facing
>>based on the normal (works)
>>
>>6. Return the position and normal information to the calling
>>routine (works)
>>
>>7. Calling routine with x,y & z information of model to place
>>(works)
>>
>>8. Not having memory usage grow each time I call the routine. (
>>My
>>problem).
>>
>>Thank you,
>>
>>Chris Kosek
>>
>>
>>
>>
>>
>>
>>
>>
>>
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