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From "Rajika Kumarasiri" <>
Subject Re: Max call of service
Date Tue, 19 Aug 2008 09:45:46 GMT
On Tue, Aug 19, 2008 at 3:07 PM, Michael Sutter

>  Hello Supun,
> what log file do you mean - the axis.log or the error log of the apache?
> Nevertheless, I don't found the exception in the log files and they contain
> a lot of messages as the log level is set to trace.
> Also I think that the service is running fine with the svn version, maybe
> it was
> a fixed memory leak with the apache module.

Normally the created resources are deallocated when the local object get
destroyed, i.e. when you finished execution the function, as Supun noted.

Can you start the apache server on valgrind and check whether you hit any
memory leaks? Hope you do have access to a linux box.


> Kind regards
> Michael
> Supun Kamburugamuva wrote:
> Hi Michael,
> By looking at your code it seems that it doesn't lead to a memory leak.
> Every time that function is called the object will be created and when the
> function finishes execution the object will be destroyed. I think there is
> another memory leak in your code. But I doubt that your problem is a result
> of a memory leak. Can you please send your log file?
> Supun..
> On Tue, Aug 19, 2008 at 1:47 PM, Michael Sutter <
> > wrote:
>> Hello Supun,
>> sorry for that. The stack is not created by me. It is the normal program
>> run-time stack from the service and the
>> object is not created as a global variable.
>> The code looks like this:
>> adb_getStatusResponse_t *
>> axis2_skel_DAQStatus_getStatus(const axutil_env_t *env)
>>  {
>>   try {
>>     FdDaq fd_daq;
>>   }
>>   catch (...) {
>>   }
>>   return return_node;
>> }
>> where fd_daq is the object.
>> Kind regards
>> Michael
>> Supun Kamburugamuva wrote:
>> Hi Michail,
>> The stack the you mentioned is little bit confusing. Is it the stack in a
>> normal process run-time or a stack that you have created? If it is the stack
>> in a normal program run-time where are you creating your object in the code?
>> Are you creating the object as a global variable?
>> Thanks,
>> Supun..
>> On Tue, Aug 19, 2008 at 1:18 PM, Michael Sutter <
>>> wrote:
>>> Hello list,
>>> I have a problem with a Axis2 service and need some input if my service
>>> is developed the right
>>> way. Inside my service I make a call to a external library. So I make a
>>> variable of the object and
>>> put it on the stack. So normally the instance should be destroyed when
>>> the scope is lost. I think
>>> this is done when the execution of the service is finished and the output
>>> is given back to the client.
>>> Am I right?
>>> By doing this I had a strange problem. The mentioned service is called
>>> every 10 sec to give a state
>>> to the client. First I was running the service in Axis2 version 1.4 and
>>> get about every two hours an
>>> AxisFault: Too many open files. So I think that the destructor of my
>>> variable was not called and that
>>> I have memory leaks. After that I integrated a log message in the
>>> destructor to see, if it is called.
>>> Normally my service is running inside an Apache installation and I never
>>> saw the output of the log
>>> message.
>>> Nevertheless if I run the service in axis simple server I see the log
>>> output and so I think the implementation
>>> of my service is correct. When running the service inside the axis simple
>>> server I also get AxisFault,
>>> but after about 12 - 14 hours runtime. After searching the mailing list I
>>> found, that there is a memory
>>> leak in the mod_axis apache modul. So I compiled Axis2 from SVN and the
>>> service is running for about
>>> 17 hours without any problem.
>>> So to my question: Have I done something wrong in the implementation of
>>> my service by putting the instance
>>> on the stack and not explicitly calling the destructor or could it be
>>> that the SVN version fixes the problem?
>>> Nevertheless, why I'm getting the message by running the service inside
>>> the axis simple server, where I
>>> see that the destructor is called?
>>> Kind regards
>>> Michael
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>> --
>> Software Engineer, WSO2 Inc
> --
> Software Engineer, WSO2 Inc


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