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Class Agent/rtProto/Algorithmic -superclass Agent/rtProto
#Agent/rtProto/Algorithmic proc pre-init-all args {
# [Simulator instance] set routingTable_ [new RouteLogic/Algorithmic]
#}
Agent/rtProto/Algorithmic proc init-all args {
[Simulator instance] compute-algo-routes
}
Agent/rtProto/Algorithmic proc compute-all {} {
[Simulator instance] compute-algo-routes
}
RouteLogic/Algorithmic instproc BFS {} {
$self instvar ns_ children_ root_ rank_
set ns_ [Simulator instance]
if {[$ns_ info class] == "Simulator"} {
$ns_ instvar link_
foreach ln [array names link_] {
set L [split $ln :]
set srcID [lindex $L 0]
set dstID [lindex $L 1]
if ![info exist adj($srcID)] {
set adj($srcID) ""
}
if ![info exist adj($dstID)] {
set adj($dstID) ""
}
if {[lsearch $adj($srcID) $dstID] < 0} {
lappend adj($srcID) $dstID
}
if {[lsearch $adj($dstID) $srcID] < 0} {
lappend adj($dstID) $srcID
}
}
} elseif {[$ns_ info class] == "SessionSim"} {
$ns_ instvar delay_
foreach ln [array names delay_] {
set L [split $ln :]
set srcID [lindex $L 0]
set dstID [lindex $L 1]
if ![info exist adj($srcID)] {
set adj($srcID) ""
}
if ![info exist adj($dstID)] {
set adj($dstID) ""
}
if {[lsearch $adj($srcID) $dstID] < 0} {
lappend adj($srcID) $dstID
}
if {[lsearch $adj($dstID) $srcID] < 0} {
lappend adj($dstID) $srcID
}
}
}
# foreach index [array names adj] {
# puts "$index: $adj($index)"
# }
set rank_ 0
set root_ 0
set traversed($root_) 1
set queue "$root_"
while {[llength $queue] > 0} {
# puts "queue: $queue, queue-length: [llength $queue]"
set parent [lindex $queue 0]
set queue [lreplace $queue 0 0]
# puts "parent: $parent, queue: $queue, queue-length: [llength $queue]"
if ![info exist children_($parent)] {
set children_($parent) ""
}
# puts "adj: $adj($parent)"
foreach nd $adj($parent) {
if ![info exist traversed($nd)] {
set traversed($nd) 0
}
if !$traversed($nd) {
set traversed($nd) 1
lappend children_($parent) $nd
lappend queue $nd
}
}
set num_children [llength $children_($parent)]
if {$rank_ < $num_children} {
set rank_ $num_children
}
# puts "rank: $rank_, queue: $queue, queue-length: [llength $queue]"
}
}
RouteLogic/Algorithmic instproc compute {} {
$self instvar root_ children_ rank_ id_ algoAdd_
# set queue "$root_"
# while {[llength $queue] > 0} {
# set parent [lindex $queue 0]
# set queue [lreplace $queue 0 0]
# puts "$parent: $children_($parent)"
# foreach child $children_($parent) {
# lappend queue $child
# }
# }
set queue [list [list $root_ 0]]
while {[llength $queue] > 0} {
# puts $queue
set parent [lindex $queue 0]
set queue [lreplace $queue 0 0]
set id [lindex $parent 0]
set algoAdd [lindex $parent 1]
set id_($algoAdd) $id
set algoAdd_($id) $algoAdd
set i 0
foreach child $children_($id) {
incr i
lappend queue [list $child [expr [expr $algoAdd * $rank_] + $i]]
}
}
}
RouteLogic/Algorithmic instproc lookup {src dst} {
$self instvar id_ algoAdd_
set algosrc $algoAdd_($src)
set algodst $algoAdd_($dst)
set algonxt [$self algo-lookup $algosrc $algodst]
# puts "lookup: $algosrc $algodst $algonxt $id_($algonxt)"
return $id_($algonxt)
}
RouteLogic/Algorithmic instproc algo-lookup {src dst} {
$self instvar rank_
if {$src == $dst} {
return $src
}
set a $src
set b $dst
set offset 0
while {$b > $a} {
set offset [expr $b % $rank_]
set b [expr $b / $rank_]
if {$offset == 0} {
set offset $rank_
set b [expr $b - 1]
}
}
if {$b == $a} {
return [expr [expr $a * $rank_] + $offset]
} else {
return [expr [expr $a - 1] / $rank_]
}
}
|
