X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/13f9ae4ca658a16c0b9d76fb918032f1c8b9841a..d155fd69fa99c97b3a9c86bb7f2e472c2e7332df:/examples/msg/bittorrent/peer.c

diff --git a/examples/msg/bittorrent/peer.c b/examples/msg/bittorrent/peer.c
index baa8bc1672..632b19e0a0 100644
--- a/examples/msg/bittorrent/peer.c
+++ b/examples/msg/bittorrent/peer.c
@@ -48,6 +48,7 @@ int peer(int argc, char *argv[])
     XBT_DEBUG("Got %d peers from the tracker", xbt_dict_length(peer.peers));
     XBT_DEBUG("Here is my current status: %s", peer.bitfield);
     peer.begin_receive_time = MSG_get_clock();
+    MSG_mailbox_set_async(peer.mailbox);
     if (has_finished(peer.bitfield)) {
       peer.pieces = FILE_PIECES;
       send_handshake_all(&peer);
@@ -99,6 +100,7 @@ void leech_loop(peer_t peer, double deadline)
         handle_message(peer, peer->task_received);
       }
     } else {
+      handle_pending_sends(peer);
       if (peer->current_piece != -1) {
         send_interested_to_peers(peer);
       } else {
@@ -238,10 +240,12 @@ void peer_init(peer_t peer, int id, int seed)
   peer->current_pieces = xbt_dynar_new(sizeof(int), NULL);
   peer->current_piece = -1;
 
-  peer->stream = RngStream_CreateStream("");
+  peer->stream = MSG_host_get_data(MSG_host_self());
   peer->comm_received = NULL;
 
   peer->round = 0;
+
+  peer->pending_sends = xbt_dynar_new(sizeof(msg_comm_t), NULL);
 }
 
 /**
@@ -258,11 +262,10 @@ void peer_free(peer_t peer)
   xbt_dict_free(&peer->peers);
   xbt_dict_free(&peer->active_peers);
   xbt_dynar_free(&peer->current_pieces);
+  xbt_dynar_free(&peer->pending_sends);
   xbt_free(peer->pieces_count);
   xbt_free(peer->bitfield);
   xbt_free(peer->bitfield_blocks);
-
-  RngStream_DeleteStream(&peer->stream);
 }
 
 /**
@@ -274,6 +277,29 @@ int has_finished(char *bitfield)
   return ((memchr(bitfield, '0', sizeof(char) * FILE_PIECES) == NULL) ? 1 : 0);
 }
 
+/**
+ * Handle pending sends and remove those which are done
+ * @param peer Peer data
+ */
+void handle_pending_sends(peer_t peer)
+{
+  int index;
+
+  while ((index = MSG_comm_testany(peer->pending_sends)) != -1) {
+    msg_comm_t comm_send = xbt_dynar_get_as(peer->pending_sends, index, msg_comm_t);
+    int status = MSG_comm_get_status(comm_send);
+    xbt_dynar_remove_at(peer->pending_sends, index, &comm_send);
+    XBT_DEBUG("Communication %p is finished with status %d, dynar size is now %lu", comm_send, status, xbt_dynar_length(peer->pending_sends));
+
+    msg_task_t task = MSG_comm_get_task(comm_send);
+    MSG_comm_destroy(comm_send);
+
+    if (status != MSG_OK) {
+      task_message_free(task);
+    }
+  }
+}
+
 /**
  * Handle a received message sent by another peer
  * @param peer Peer data
@@ -428,6 +454,8 @@ void handle_message(peer_t peer, msg_task_t task)
       }
     }
     break;
+  case MESSAGE_CANCEL:
+    break;
   }
   //Update the peer speed.
   if (remote_peer) {
@@ -544,7 +572,7 @@ void update_choked_peers(peer_t peer)
   //remove a peer from the list
   xbt_dict_cursor_t cursor = NULL;
   xbt_dict_cursor_first(peer->active_peers, &cursor);
-  if (xbt_dict_length(peer->active_peers) > 0) {
+  if (!xbt_dict_is_empty(peer->active_peers)) {
     key = xbt_dict_cursor_get_key(cursor);
     connection_t peer_choked = xbt_dict_cursor_get_data(cursor);
     if (peer_choked) {
@@ -851,7 +879,9 @@ void send_bitfield(peer_t peer, const char *mailbox)
   msg_task_t task =
       task_message_bitfield_new(peer->hostname, peer->mailbox, peer->id,
                                 peer->bitfield, FILE_PIECES);
-  MSG_task_dsend(task, mailbox, task_message_free);
+  //Async send and append to pending sends
+  msg_comm_t comm = MSG_task_isend(task, mailbox);
+  xbt_dynar_push(peer->pending_sends, &comm);
 }
 
 /**