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From Damitha Kumarage <dami...@wso2.com>
Subject Re: Multi-threaded Services
Date Sun, 16 May 2010 03:12:54 GMT
Evan Klinger wrote:
> Damintha,
> Thank you for your reply. Does this mean I need to use the set of
> apr_* mutex functions or will the standard pthread functions be
> sufficient? Do you know of any examples that make use of mutexes?
>   
Axis2/C has implemented a wrapper layer for handling platform specific 
thread impls. In linux this wraps pthreads. You just create Axis2/C 
thread mutex and use it's functions. For example see how it is used in 
util/src/log.c

Thanks,
Damitha
> Thanks
> Evan
>
> On Tue, May 11, 2010 at 9:54 PM, Damitha Kumarage <damitha@wso2.com> wrote:
>   
>> Evan Klinger wrote:
>>     
>>> Hello,
>>> When developing a REST service in Axis2/C, how does Apache handle the
>>> integration with the Axis2 module? When a request comes in that is
>>> passed to the Axis2 module, does each request create a new instance of
>>> the service or is it a new thread?
>>>       
>> It is a new thread
>>     
>>>  Basically, in the service we may
>>> need to open a file for writing but also for reading, depending upon
>>> the request. However, we don't want to read while the file is being
>>> written to so it seems like we need a rw lock/mutex, but that will
>>> only work if the service is called by multiple threads. If they are
>>> called from separate processes then I don't think this approach will
>>> work. Any information on how to handle this would be greatly
>>> appreciated.
>>>
>>>       
>> For each Apache process there will be a separate Axis2/C engine/service.
>> Within that process
>> a single service would handle all requests coming for that service. So you
>> need to handle mt.
>> Thanks,
>> Damitha
>>     
>>> Thank you
>>> Evan
>>>
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>>>
>>>
>>>       
>> --
>> __________________________________________________________________
>>
>> Damitha Kumarage
>> Technical Lead; WSO2 Inc.
>> "Oxygenating the Web Service Platform; " http://www.wso2.com/
>>
>> blog: " http://damithakumarage.wordpress.com/
>> __________________________________________________________________
>>
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>>
>>
>>     
>
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>
>
>   


-- 
__________________________________________________________________

Damitha Kumarage
Technical Lead; WSO2 Inc.
"Oxygenating the Web Service Platform; " http://www.wso2.com/

blog: " http://damithakumarage.wordpress.com/
__________________________________________________________________

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