From f922c0b92ee338130a7bcb5124cba2f84ec053aa Mon Sep 17 00:00:00 2001 From: glenux Date: Sat, 4 Mar 2006 14:31:32 +0000 Subject: [PATCH] --- doc/my-rfc.txt | 5 +++ src/lowreceiver_cb.cc | 95 +++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 100 insertions(+) create mode 100644 src/lowreceiver_cb.cc diff --git a/doc/my-rfc.txt b/doc/my-rfc.txt index 511b0ea..189dfe7 100644 --- a/doc/my-rfc.txt +++ b/doc/my-rfc.txt @@ -79,3 +79,8 @@ Message_data : ~~~~~~~~~~~~~~ array of unsigned shorts (16 bits * Message_size) + +Notes: +~~~~~~ + Timestamps start at time = 0 + Site indexes start at index = 1 diff --git a/src/lowreceiver_cb.cc b/src/lowreceiver_cb.cc new file mode 100644 index 0000000..cc34028 --- /dev/null +++ b/src/lowreceiver_cb.cc @@ -0,0 +1,95 @@ + +#include "lowreceiver.h" +#include "messagecell_ab.h" + + +void LowReceiver::manage_cbcast(Message * mesg) { + static std::list fifo_get; + static std::list fifo_send; + + std::list::iterator iter; + printf("LowReceiver::manage_cbcast -- init\n"); + + // identifiant = horloge + id_site_emeteur + bool iAmTheEmitter = false; + bool firstSeenMessage = true; + + if (mesg->getStamp().getIndex() == _group.getIndex()){ + iAmTheEmitter = true; + } + + if (iAmTheEmitter){ + printf("LowReceiver::manage_cbcast - Received my own message \n"); + //on faire la gestion du cbcast/send ici, c'est plus simple que + //de partager une variable+mutex avec le sender + + //FIXME: chercher si l'on a déja recu ce message + MessageCellAb * cell = NULL; + for (iter = fifo_send.begin(); iter != fifo_send.end(); iter++){ + //on fait pointer cell sur la cellule si égale a l'id du message + //courant + MessageCellAb * cur = *iter; + if (cur->message == mesg){ + printf("LowReceiver::manage_cbcast -- message seen\n"); + firstSeenMessage = false; + cell = cur; + break; + } + } + if (firstSeenMessage){ + //sinon on le crée + printf("LowReceiver::manage_cbcast -- message is first\n"); + cell = new MessageCellAb(); + cell->message = new Message(*mesg); + //et on l'ajoute au fifo + fifo_send.push_back(cell); + } + + //FIXME: comparer le timestamp max a ceux que l'on recoit + cell->count += 1; + if (cell->count == _group.getCount()){ + // broadcaster le nouveau timestamp du message + // + // le message a broadcaster est exactement le message max + // reçu... mais bon... on le reconstruit quand m^eme + // IMPROVE + + TimeStamp st = cell->message->getStamp(); + Message * nMsg = new Message(Protocol::TYPE_ABCAST, + st, + cell->maximum->getRaw(), + cell->maximum->getRawSize()); + _group.broadcast(*nMsg); + } + } else { + printf("LowReceiver::manage_cbcast - Received a message from a friend\n"); + for (iter = fifo_get.begin(); iter != fifo_get.end(); iter++){ + MessageCellAb * cur = *iter; + if (cur->message == mesg) { + printf("LowReceiver::manage_cbcast -- message seen\n"); + firstSeenMessage = false; + break; + } + } + + if (firstSeenMessage){ + printf("LowReceiver::manage_cbcast -- message is first\n"); + // si le message est vu pour la premiere fois: + // - on l'ajoute dans la liste d'attente + MessageCellAb * cell = new MessageCellAb(); + cell->message = new Message(*mesg); + cell->type = MessageCellAb::TYPE_TEMPORARY; + // - on retourne une estampille(reception) a l'emeteur + + } else { + // sinon + // - l'estampille du message est mise a jour + TimeStamp * stamp = new TimeStamp (Protocol::TYPE_ABCAST, mesg->getData(), mesg->getDataSize()); + + // - le message est marqué comme final + // - on défile les estampille finale la + } + } +} + +