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 prefix_ std::type_info const & senf::ppi::connector::Connector::packetTypeID()
  57 {
  58     return typeid(void);
  59 }
  60
  61 ///////////////////////////////////////////////////////////////////////////
  62 // senf::ppi::connector::PassiveConnector
  63
  64 ////////////////////////////////////////
  65 // private members
  66
  67 prefix_ void senf::ppi::connector::PassiveConnector::notifyUnthrottle()
  68 {
  69     if (throttled() && !nativeThrottled_) {
  70         Routes::const_iterator i (routes_.begin());
  71         Routes::const_iterator const i_end (routes_.end());
  72         for (; i != i_end; ++i)
  73             if ((*i)->throttled())
  74                 break;
  75         if (i == i_end) {
  76             remoteThrottled_ = false;
  77             emitUnthrottle();
  78         }
  79     }
  80     else
  81         remoteThrottled_ = false;
  82 }
  83
  84 ///////////////////////////////////////////////////////////////////////////
  85 // senf::ppi::connector::ActiveConnector
  86
  87 ////////////////////////////////////////
  88 // private members
  89
  90 prefix_ void senf::ppi::connector::ActiveConnector::notifyThrottle()
  91 {
  92     if (throttleCallback_)
  93         throttleCallback_();
  94     NotifyRoutes::const_iterator i (notifyRoutes_.begin());
  95     NotifyRoutes::const_iterator const i_end (notifyRoutes_.end());
  96     for (; i != i_end; ++i)
  97         (*i)->notifyThrottle();
  98 }
  99
 100 prefix_ void senf::ppi::connector::ActiveConnector::notifyUnthrottle()
 101 {
 102     if (unthrottleCallback_)
 103         unthrottleCallback_();
 104     NotifyRoutes::const_iterator i (notifyRoutes_.begin());
 105     NotifyRoutes::const_iterator const i_end (notifyRoutes_.end());
 106     for (; i != i_end; ++i)
 107         (*i)->notifyUnthrottle();
 108 }
 109
 110 prefix_ void senf::ppi::connector::ActiveConnector::registerRoute(ForwardingRoute & route)
 111 {
 112     notifyRoutes_.push_back(&route);
 113 }
 114
 115 ///////////////////////////////////////////////////////////////////////////
 116 // senf::ppi::connector::InputConnector
 117
 118 prefix_ senf::Packet senf::ppi::connector::InputConnector::operator()()
 119 {
 120     if (empty())
 121         v_requestEvent();
 122     Packet p;
 123     if (! empty()) {
 124         p = peek();
 125         queue_.pop_back();
 126         v_dequeueEvent();
 127     }
 128     return p;
 129 }
 130
 131 ////////////////////////////////////////
 132 // private members
 133
 134 prefix_ void senf::ppi::connector::InputConnector::v_requestEvent()
 135 {}
 136
 137 prefix_ void senf::ppi::connector::InputConnector::v_enqueueEvent()
 138 {}
 139
 140 prefix_ void senf::ppi::connector::InputConnector::v_dequeueEvent()
 141 {}
 142
 143 ///////////////////////////////////////////////////////////////////////////
 144 // senf::ppi::connector::GenericActiveInput
 145
 146 ////////////////////////////////////////
 147 // private members
 148
 149 prefix_ void senf::ppi::connector::GenericActiveInput::v_requestEvent()
 150 {
 151     request();
 152 }
 153
 154 ///////////////////////////////////////////////////////////////////////////
 155 // senf::ppi::connector::GenericPassiveInput
 156
 157 ////////////////////////////////////////
 158 // private members
 159
 160 prefix_ void senf::ppi::connector::GenericPassiveInput::v_enqueueEvent()
 161 {
 162     emit();
 163     qdisc_->update(*this, QueueingDiscipline::ENQUEUE);
 164 }
 165
 166 prefix_ void senf::ppi::connector::GenericPassiveInput::v_dequeueEvent()
 167 {
 168     qdisc_->update(*this, QueueingDiscipline::DEQUEUE);
 169 }
 170
 171 prefix_ void senf::ppi::connector::GenericPassiveInput::v_unthrottleEvent()
 172 {
 173     size_type n (queueSize());
 174     while (n) {
 175         emit();
 176         size_type nn (queueSize());
 177         if (n == nn)
 178             break;
 179         n = nn;
 180     }
 181 }
 182
 183 ///////////////////////////////cc.e////////////////////////////////////////
 184 #undef prefix_
 185 //#include "Connectors.mpp"
 186
 187 \f
 188 // Local Variables:
 189 // mode: c++
 190 // fill-column: 100
 191 // comment-column: 40
 192 // c-file-style: "senf"
 193 // indent-tabs-mode: nil
 194 // ispell-local-dictionary: "american"
 195 // compile-command: "scons -u test"
 196 // End: