PPI/Joins.cc

   1 // $Id$
   2 //
   3 // Copyright (C) 2007
   4 // Fraunhofer Institute for Open Communication Systems (FOKUS)
   5 // Competence Center NETwork research (NET), St. Augustin, GERMANY
   6 //     Stefan Bund <g0dil@berlios.de>
   7 //
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 2 of the License, or
  11 // (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the
  20 // Free Software Foundation, Inc.,
  21 // 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  22
  23 /** \file
  24     \brief Joins non-inline non-template implementation */
  25
  26 #include "Joins.hh"
  27 //#include "Joins.ih"
  28
  29 // Custom includes
  30 #include <algorithm>
  31 #include <boost/bind.hpp>
  32 #include <boost/lambda/lambda.hpp>
  33 #include <boost/lambda/bind.hpp>
  34
  35 //#include "Joins.mpp"
  36 #define prefix_
  37 ///////////////////////////////cc.p////////////////////////////////////////
  38
  39 ///////////////////////////////////////////////////////////////////////////
  40 // senf::ppi::module::PassiveJoin
  41
  42 ////////////////////////////////////////
  43 // private members
  44
  45 prefix_ senf::ppi::connector::PassiveInput<> & senf::ppi::module::PassiveJoin::newInput()
  46 {
  47     inputs_.push_back(new connector::PassiveInput<>());
  48     connector::PassiveInput<> & input (inputs_.back());
  49
  50     noroute(input);
  51     input.onRequest(boost::bind(&PassiveJoin::request,this,boost::ref(input)));
  52
  53     return input;
  54 }
  55
  56 prefix_ void senf::ppi::module::PassiveJoin::request(connector::GenericPassiveInput & input)
  57 {
  58     output(input());
  59 }
  60
  61 prefix_ void senf::ppi::module::PassiveJoin::onThrottle()
  62 {
  63     using boost::lambda::_1;
  64     using boost::lambda::bind;
  65     std::for_each(inputs_.begin(), inputs_.end(),
  66                   bind(&connector::GenericPassiveInput::throttle, _1));
  67 }
  68
  69 prefix_ void senf::ppi::module::PassiveJoin::onUnthrottle()
  70 {
  71     using boost::lambda::_1;
  72     using boost::lambda::bind;
  73     std::for_each(inputs_.begin(), inputs_.end(),
  74                   bind(&connector::GenericPassiveInput::unthrottle, _1));
  75 }
  76
  77 ///////////////////////////////////////////////////////////////////////////
  78 // senf::ppi::module::PriorityJoin
  79
  80 ////////////////////////////////////////
  81 // private members
  82
  83 prefix_ senf::ppi::connector::ActiveInput<> &
  84 senf::ppi::module::PriorityJoin::newInput(int priority)
  85 {
  86     if (priority > int(inputs_.size()))
  87         priority = inputs_.size();
  88     else if (priority < 0) {
  89         priority = inputs_.size() + priority + 1;
  90         if (priority < 0)
  91             priority = 0;
  92     }
  93
  94     connector::ActiveInput<> & input (
  95         *inputs_.insert(inputs_.begin()+priority, new connector::ActiveInput<>()));
  96
  97     noroute(input);
  98     input.onThrottle(&PriorityJoin::onThrottle);
  99     input.onUnthrottle(&PriorityJoin::onUnthrottle);
 100
 101     return input;
 102 }
 103
 104 prefix_ void senf::ppi::module::PriorityJoin::request()
 105 {
 106     using boost::lambda::_1;
 107     using boost::lambda::bind;
 108     Inputs::iterator i (std::find_if(inputs_.begin(), inputs_.end(),
 109                                      ! bind(&connector::GenericActiveInput::throttled, _1)));
 110     if (i != inputs_.end())
 111         output((*i)());
 112 }
 113
 114 prefix_ void senf::ppi::module::PriorityJoin::onThrottle()
 115 {
 116     if (std::find_if(inputs_.begin(), inputs_.end(),
 117                      ! bind(&connector::GenericActiveInput::throttled, _1)) == inputs_.end())
 118         output.throttle();
 119 }
 120
 121 prefix_ void senf::ppi::module::PriorityJoin::onUnthrottle()
 122 {
 123     output.unthrottle();
 124 }
 125
 126 ///////////////////////////////cc.e////////////////////////////////////////
 127 #undef prefix_
 128 //#include "Joins.mpp"
 129
 130 \f
 131 // Local Variables:
 132 // mode: c++
 133 // fill-column: 100
 134 // comment-column: 40
 135 // c-file-style: "senf"
 136 // indent-tabs-mode: nil
 137 // ispell-local-dictionary: "american"
 138 // compile-command: "scons -u test"
 139 // End: