PPI/Connectors.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 Connectors non-inline non-template implementation */
  25
  26 #include "Connectors.hh"
  27 #include "Connectors.ih"
  28
  29 // Custom includes
  30 #include "Route.hh"
  31 #include "Module.hh"
  32
  33 //#include "Connectors.mpp"
  34 #define prefix_
  35 ///////////////////////////////cc.p////////////////////////////////////////
  36
  37 ///////////////////////////////////////////////////////////////////////////
  38 // senf::ppi::connector::Connector
  39
  40 prefix_ void senf::ppi::connector::Connector::connect(Connector & target)
  41 {
  42     SENF_ASSERT( module_ && ! peer_ && target.module_ && ! target.peer_ );
  43     if (! (packetTypeID() == typeid(void) ||
  44            target.packetTypeID() == typeid(void) ||
  45            packetTypeID() == target.packetTypeID()) )
  46         throw IncompatibleConnectorsException()
  47             << ": " << prettyName(packetTypeID())
  48             << " [in module " << prettyName(typeid(*module_))  << "] "
  49             << ", " << prettyName(target.packetTypeID())
  50             << " [in module " << prettyName(typeid(*target.module_)) << "]";
  51
  52     peer_ = & target;
  53     target.peer_ = this;
  54 }
  55
  56 ///////////////////////////////////////////////////////////////////////////
  57 // senf::ppi::connector::PassiveConnector
  58
  59 ////////////////////////////////////////
  60 // private members
  61
  62 prefix_ void senf::ppi::connector::PassiveConnector::notifyUnthrottle()
  63 {
  64     if (throttled() && !nativeThrottled_) {
  65         Routes::const_iterator i (routes_.begin());
  66         Routes::const_iterator const i_end (routes_.end());
  67         for (; i != i_end; ++i)
  68             if ((*i)->throttled())
  69                 break;
  70         if (i == i_end) {
  71             remoteThrottled_ = false;
  72             emitUnthrottle();
  73         }
  74     }
  75     else
  76         remoteThrottled_ = false;
  77 }
  78
  79 ///////////////////////////////////////////////////////////////////////////
  80 // senf::ppi::connector::ActiveConnector
  81
  82 ////////////////////////////////////////
  83 // private members
  84
  85 prefix_ void senf::ppi::connector::ActiveConnector::notifyThrottle()
  86 {
  87     if (throttleCallback_)
  88         throttleCallback_();
  89     NotifyRoutes::const_iterator i (notifyRoutes_.begin());
  90     NotifyRoutes::const_iterator const i_end (notifyRoutes_.end());
  91     for (; i != i_end; ++i)
  92         (*i)->notifyThrottle();
  93 }
  94
  95 prefix_ void senf::ppi::connector::ActiveConnector::notifyUnthrottle()
  96 {
  97     if (unthrottleCallback_)
  98         unthrottleCallback_();
  99     NotifyRoutes::const_iterator i (notifyRoutes_.begin());
 100     NotifyRoutes::const_iterator const i_end (notifyRoutes_.end());
 101     for (; i != i_end; ++i)
 102         (*i)->notifyUnthrottle();
 103 }
 104
 105 prefix_ void senf::ppi::connector::ActiveConnector::registerRoute(ForwardingRoute & route)
 106 {
 107     notifyRoutes_.push_back(&route);
 108 }
 109
 110 ///////////////////////////////////////////////////////////////////////////
 111 // senf::ppi::connector::InputConnector
 112
 113 prefix_ senf::Packet senf::ppi::connector::InputConnector::operator()()
 114 {
 115     if (empty())
 116         v_requestEvent();
 117     Packet p;
 118     if (! empty()) {
 119         p = peek();
 120         queue_.pop_back();
 121         v_dequeueEvent();
 122     }
 123     return p;
 124 }
 125
 126 ////////////////////////////////////////
 127 // private members
 128
 129 prefix_ void senf::ppi::connector::InputConnector::v_requestEvent()
 130 {}
 131
 132 prefix_ void senf::ppi::connector::InputConnector::v_enqueueEvent()
 133 {}
 134
 135 prefix_ void senf::ppi::connector::InputConnector::v_dequeueEvent()
 136 {}
 137
 138 ///////////////////////////////////////////////////////////////////////////
 139 // senf::ppi::connector::GenericActiveInput
 140
 141 ////////////////////////////////////////
 142 // private members
 143
 144 prefix_ void senf::ppi::connector::GenericActiveInput::v_requestEvent()
 145 {
 146     request();
 147 }
 148
 149 ///////////////////////////////////////////////////////////////////////////
 150 // senf::ppi::connector::GenericPassiveInput
 151
 152 ////////////////////////////////////////
 153 // private members
 154
 155 prefix_ void senf::ppi::connector::GenericPassiveInput::v_enqueueEvent()
 156 {
 157     emit();
 158     qdisc_->update(*this, QueueingDiscipline::ENQUEUE);
 159 }
 160
 161 prefix_ void senf::ppi::connector::GenericPassiveInput::v_dequeueEvent()
 162 {
 163     qdisc_->update(*this, QueueingDiscipline::DEQUEUE);
 164 }
 165
 166 prefix_ void senf::ppi::connector::GenericPassiveInput::v_unthrottleEvent()
 167 {
 168     size_type n (queueSize());
 169     while (n) {
 170         emit();
 171         size_type nn (queueSize());
 172         if (n == nn)
 173             break;
 174         n = nn;
 175     }
 176 }
 177
 178 ///////////////////////////////cc.e////////////////////////////////////////
 179 #undef prefix_
 180 //#include "Connectors.mpp"
 181
 182 \f
 183 // Local Variables:
 184 // mode: c++
 185 // fill-column: 100
 186 // comment-column: 40
 187 // c-file-style: "senf"
 188 // indent-tabs-mode: nil
 189 // ispell-local-dictionary: "american"
 190 // compile-command: "scons -u test"
 191 // End: