[BZ-1529] GIOP_Message_Base::write_protocol_header needs to be more efficient

[jwillemsen]

Field	Value
Bugzilla ID	1529
Reporter	Nanbor Wang
Assigned to	DOC Center Support List (internal)
Product	TAO
Component	ORB
Version	1.3.2
Platform / OS	All / All
Priority	P3
Severity	normal
Status	ASSIGNED
Resolution
Created	2003-06-09 22:55:39 -0500

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Originally posted by Nanbor Wang on 2003-06-09 22:55:39 -0500

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Few points for making it efficient

1. The call reset () on the CDR should be removed and its a waste since we only
   use a fresh CDR

2. The GIOP class should cache a CDR stream with the GIOP header written the
   first time. This is perfectly valid

   • the client holds a lock on the transport and so you can use the cached
     version with the same header again and again

   • the server needs to asses the GIOP minor revision before sending the reply
     out and its a single write operation after indexing to the right position.

for #2 to be possible the ACE/TAO_OutputCDR streams need to have a way to chain
CDR streams or the internal message blocks.

This should save CPU cycles in the outgoing path.

[jwillemsen]

Originally posted by Nanbor Wang on 2003-06-25 13:01:09 -0500 (Bugzilla comment 1)

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Accept for tao-support