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From Manjula Peiris <manj...@wso2.com>
Subject Re: apache shared memory
Date Tue, 02 Dec 2008 17:46:17 GMT
You can enable Shared memory for mod_axis2 by adding Axis2GlobalPoolSize
parameter in the httpd.conf. And when accessing that shared variable you
need to switch to global pool. Please see axutil_allocator.h for
details.


On Tue, 2008-12-02 at 11:53 +0100, Michael Sutter wrote:
> Hello list,
> 
> I have a strange behavior and hopefully someone can help me. I have
> implemented a simple service and I want
> to access the shared memory of the apache daemon. The service stores a
> object, which can perform some basic
> mathematical operations and store a value.
> 
> In the first call of the service the shared variable is initialized and
> stored with a value in the shared
> memory. Every following call should get the shared variable, add two
> numbers and store it in the shared variable
> (setLaenge(int a) in myadd.cpp). The result should look like this: first
> call 10, second call 19, third call 28 and so on,
> increasing with nine for every following call.
> 
> The problem know is that I only get the correct value from the service
> every third call, but then the right value. For the
> other calls I always got the same, invalid value. It looks like first
> call 10, second call -1211088511, third call -1211088511,
> fourth call 19 and so on. I tested it on two servers with an older and
> newer apache, having the same behavior, but other
> incorrect values. If I test the service with the axis simple server
> everything works fine, but I don't know if I can test the
> shared memory with the simple server?
> 
> My question now is: Does anybody knew this behavior? Maybe I have
> implemented something wrong and attached
> the service. It would be very nice, if someone can have a look inside my
> code.
> 
> Kind regards
> Michael
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