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diff --git a/TAO/docs/ORB_Internals.html b/TAO/docs/ORB_Internals.html new file mode 100644 index 00000000000..05ffb00c2a4 --- /dev/null +++ b/TAO/docs/ORB_Internals.html @@ -0,0 +1,87 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> +<html> + <head> + <!-- $Id$ --> + <title>TAO ORB Internals</title> + </head> + + <body> + <h1>TAO ORB Internals</h1> + + <P>This document will describe how the ORB internals work, with + special attention to the areas that are more poorly documented. + For example: we will not document (at least initially) the + pluggable protocols framework, the interpretive marshaling + engine, the POA, the waiting strategies and the + leader-follower. + </P> + <P>New ORB developers are expected to read this document and + document here all the things that they find hard to understand, + surprizing or event broken. + New members of the ORB core team are expected to fill in details + that were not explained before. + </P> + + <H3>Client Side event sequence</H3> + + <P>In this section we will document the sequence of calls and + interactions on the client side. + Only the synchronous case, without forwarding or exceptions is + documented at this point. + </P> + + <P>Assume the application invokes a method on an object reference, + in the generated stub for that method the following sequence is + started: + <UL> + <LI>creates TAO_GIOP_Twoway_Invocation object + </LI> + <LI>calls start method on the invocation object + </LI> + + <LI>TAO_GIOP_Twoway_Invocation::start: + <UL> + <LI>finds the profile to use for this invocation + </LI> + <LI>passes the profile to Connector Registry to obtain + TAO_Transport object (wrapper around Service_Handler) + </LI> + <LI>generates and marshalls GIOP & Request headers for this + invocation + </LI> + </UL> + </LI> + + <LI>marshalls request parameters + </LI> + <LI>calls invoke method on the invocation object + </LI> + + <LI>TAO_GIOP_Twoway_Invocation::invoke: + <UL> + <LI>sets TAO_Reply_Dispatcher (this is used to make both + synch and asynch requests look the same) + </LI> + <LI>sends the request + </LI> + <LI>waits on the TAO_Wait_Strategy + </LI> + </UL> + </LI> + + <LI>if there was a minor problem or location forward, tries + again: call TAO_GIO_Twoway_Invocation::start, etc. + </LI> + <LI>if everything went ok, demarshalls reply + </LI> + </UL> + </P> + + <hr> + <address><a href="mailto:coryan@cs.wustl.edu">Carlos O'Ryan</a></address> +<!-- Created: Fri Sep 10 16:34:44 CDT 1999 --> +<!-- hhmts start --> +Last modified: Fri Sep 10 18:00:18 CDT 1999 +<!-- hhmts end --> + </body> +</html> |