Open Mash Cross Reference
mash/tcl/cache/lazy.tcl

   # lazy.tcl --
   #
   #       FIXME: This file needs a description here.
   #
   # Copyright (c) 1998-2002 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.
  
  Class WebCache/Lazy -superclass WebCache
  
  WebCache/Lazy public should_recover { source cid sseq eseq } {
          $self instvar sockets_
  
          # recover only if this cache has a pending request from
          # the browser. otherwise, we do not recover and can always
          # do a downcall if we need the data later.
  
          set url [$self cid_2_name $source $cid]
          if { $url != "" && [info exists sockets_($url)] } {
                  puts "wc: should_recover yes $cid $url"
                  return 1
          } else {
                  puts "wc: should_recover no $cid $url"
  
                  # need to remember all the holes in this name
                  # srm does not keep track of it
  
  
                  return 0
          }
  }
  
  
  WebCache/Lazy public get { url { socket "" } } {
  
  }