diff -r ebc84c812384 -r 46218c8b8afa Symbian3/PDK/Source/GUID-59BBEA98-6501-5415-A4B5-3AE8E33957D3.dita --- a/Symbian3/PDK/Source/GUID-59BBEA98-6501-5415-A4B5-3AE8E33957D3.dita Thu Mar 11 15:24:26 2010 +0000 +++ b/Symbian3/PDK/Source/GUID-59BBEA98-6501-5415-A4B5-3AE8E33957D3.dita Thu Mar 11 18:02:22 2010 +0000 @@ -1,34 +1,34 @@ - - - - - -Server -servicesDescribes asynchronous services provided by the client-server framework. -

The majority of Symbian platform asynchronous services are provided by -servers written in accordance with the Symbian platform client-server framework. -A server is a thread running in user mode, which services requests from client -threads also running in user mode. An example of asynchronous service provided -by a server is the EventReady(TRequestStatus* aStat) function -provided by the RWsSession class — the client API to -the window server. This function requests an event from the window server, -which the user program can extract and analyse using other RWsSession functions.

-

As with services provided by the kernel, server-provided services are presented -to clients through a client API, typically an R class such -as RWsSession, derived from RSessionBase. -When the RSessionBase is opened, a server-side object is -created and the client’s thread id is noted. Request functions are converted -into an inter-thread message which encapsulates all the parameters. When request -functions complete, the server posts the request status and signals the client -thread’s request semaphore.

-

As with services provided by the kernel, the process of requesting asynchronous -service from a server, and handling its completion, involves messaging and -inter-thread communication. Symbian platform provides efficient services to -support these.

+ + + + + +Server +servicesDescribes asynchronous services provided by the client-server framework. +

The majority of Symbian platform asynchronous services are provided by +servers written in accordance with the Symbian platform client-server framework. +A server is a thread running in user mode, which services requests from client +threads also running in user mode. An example of asynchronous service provided +by a server is the EventReady(TRequestStatus* aStat) function +provided by the RWsSession class — the client API to +the window server. This function requests an event from the window server, +which the user program can extract and analyse using other RWsSession functions.

+

As with services provided by the kernel, server-provided services are presented +to clients through a client API, typically an R class such +as RWsSession, derived from RSessionBase. +When the RSessionBase is opened, a server-side object is +created and the client’s thread id is noted. Request functions are converted +into an inter-thread message which encapsulates all the parameters. When request +functions complete, the server posts the request status and signals the client +thread’s request semaphore.

+

As with services provided by the kernel, the process of requesting asynchronous +service from a server, and handling its completion, involves messaging and +inter-thread communication. Symbian platform provides efficient services to +support these.

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