Open Mash Cross Reference
mash/sim/hm/al-ns.tcl

   # al-ns.tcl --
   #
   #       FIXME: This file needs a description here.
   #
   # Copyright (c) 1997-2002 The Regents of the University of California.
   # All rights reserved.
   #
   # Redistribution and use in source and binary forms, with or without
   # modification, are permitted provided that the following conditions are met:
  #
  # A. Redistributions of source code must retain the above copyright notice,
  #    this list of conditions and the following disclaimer.
  # B. Redistributions in binary form must reproduce the above copyright notice,
  #    this list of conditions and the following disclaimer in the documentation
  #    and/or other materials provided with the distribution.
  # C. Neither the names of the copyright holders nor the names of its
  #    contributors may be used to endorse or promote products derived from this
  #    software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
  # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  # @(#) $Header: /usr/mash/src/repository/mash/mash-1/sim/hm/al-ns.tcl,v 1.4 2002/02/03 04:16:36 lim Exp $ (UCB)
  
  Class AnnounceListenManager
  
  AnnounceListenManager instproc init { mtu spec } {
          $self next
  
          $self instvar sess_
          set spec [split $spec /]
          set addr [lindex $spec 0]
          set port [lindex $spec 1]
          global ns
          set sess_ [$ns session $addr/$port 10]
          $sess_ join $self
  }
  
  AnnounceListenManager instproc destroy {} {
          $self instvar sess_
          $sess_ leave $self
  
          $self next
  }
  
  AnnounceListenManager instproc start { active } {
          $self instvar timer_ active_
          set active_ $active
          $timer_ schedule_timer
  }
  
  AnnounceListenManager instproc stop {} {
          $self instvar timer_ active_
          set active_ 0
          $timer_ cancel
  }
  
  AnnounceListenManager instproc send_announcement {} {
          $self instvar timer_ active_
          if { $active_ == 1 } {
                  set data [$self build_announcement]
                  $self announce $data
  #puts ""
  #puts "$self ($class): announce {$data}"
  #puts ""
          }
          $timer_ schedule_timer
  }
  
  AnnounceListenManager instproc announce { msg } {
          $self instvar sess_
          $sess_ send $self $msg
  }
  
  AnnounceListenManager instproc recv { from msg size } {
          set addr [[$from set agent_] set host_]
          $self recv_announcement $addr $msg $size
  }