95 lines
2.8 KiB
C++
95 lines
2.8 KiB
C++
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#include "lowreceiver.h"
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#include "messagecell_ab.h"
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void LowReceiver::manage_abcast(Message * mesg) {
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static std::list<MessageCellAb *> fifo_get;
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static std::list<MessageCellAb *> fifo_send;
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std::list<MessageCellAb *>::iterator iter;
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printf("LowReceiver::manage_abcast -- init\n");
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// identifiant = horloge + id_site_emeteur
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bool iAmTheEmitter = false;
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bool firstSeenMessage = true;
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if (mesg->getStamp().getIndex() == _group.getIndex()){
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iAmTheEmitter = true;
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}
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if (iAmTheEmitter){
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printf("LowReceiver::manage_abcast - Received my own message \n");
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//on faire la gestion du abcast/send ici, c'est plus simple que
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//de partager une variable+mutex avec le sender
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//FIXME: chercher si l'on a déja recu ce message
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MessageCellAb * cell = NULL;
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for (iter = fifo_send.begin(); iter != fifo_send.end(); iter++){
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//on fait pointer cell sur la cellule si égale a l'id du message
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//courant
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MessageCellAb * cur = *iter;
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if (cur->message == mesg){
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printf("LowReceiver::manage_abcast -- message seen\n");
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firstSeenMessage = false;
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cell = cur;
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break;
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}
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}
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if (firstSeenMessage){
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//sinon on le crée
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printf("LowReceiver::manage_abcast -- message is first\n");
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cell = new MessageCellAb();
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cell->message = new Message(*mesg);
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//et on l'ajoute au fifo
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fifo_send.push_back(cell);
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}
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//FIXME: comparer le timestamp max a ceux que l'on recoit
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cell->count += 1;
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if (cell->count == _group.getCount()){
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// broadcaster le nouveau timestamp du message
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//
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// le message a broadcaster est exactement le message max
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// reçu... mais bon... on le reconstruit quand m^eme
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// IMPROVE
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TimeStamp st = cell->message->getStamp();
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Message * nMsg = new Message(Protocol::TYPE_ABCAST,
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st,
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cell->maximum->getRaw(),
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cell->maximum->getRawSize());
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_group.broadcast(*nMsg);
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}
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} else {
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printf("LowReceiver::manage_abcast - Received a message from a friend\n");
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for (iter = fifo_get.begin(); iter != fifo_get.end(); iter++){
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MessageCellAb * cur = *iter;
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if (cur->message == mesg) {
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printf("LowReceiver::manage_abcast -- message seen\n");
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firstSeenMessage = false;
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break;
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}
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}
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if (firstSeenMessage){
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printf("LowReceiver::manage_abcast -- message is first\n");
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// si le message est vu pour la premiere fois:
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// - on l'ajoute dans la liste d'attente
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MessageCellAb * cell = new MessageCellAb();
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cell->message = new Message(*mesg);
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cell->type = MessageCellAb::TYPE_TEMPORARY;
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// - on retourne une estampille(reception) a l'emeteur
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} else {
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// sinon
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// - l'estampille du message est mise a jour
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TimeStamp * stamp = new TimeStamp (Protocol::TYPE_ABCAST, mesg->getData(), mesg->getDataSize());
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// - le message est marqué comme final
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// - on défile les estampille finale la
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}
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}
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}
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