BIND 10 #536: Make OutputBuffer more lightweight

[BIND 10 Development]

#536: Make OutputBuffer more lightweight
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                 Reporter:  vorner   |                Owner:  shane
                     Type:  task     |               Status:  reviewing
                 Priority:  major    |            Milestone:
                Component:           |  Sprint-20110419
  DNSPacket API                      |           Resolution:
                 Keywords:           |            Sensitive:  0
Estimated Number of Hours:  7.0      |  Add Hours to Ticket:  0
                Billable?:  1        |          Total Hours:  0
                Internal?:  0        |
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Changes (by vorner):

 * owner:  vorner => shane


Comment:

 Hello

 I pushed fix for the 0-length bug. Is it OK?

 About the bit shifts, for one, bit shifts are really fast. For another,
 this is a place where even the ancient compilers were able to optimise,
 because there are no sideeffects and everything is just local finding of
 instructions doing the same (I've seen gcc do things like replacing
 strcpy(string, "hello"); with two MOVs). So I would just stay with
 whatever is the most readable, but if you like, we might try read the
 generated assembler if it ends up the same ;-).

 I'll create the ticket, but I don't know if it really is full 50%. It
 looks more like 25% to me ;-).

 Thanks

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Ticket URL: <http://bind10.isc.org/ticket/536#comment:11>
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