X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/84637d5a56f373e75eb6619d1afb54b7da3f5e36..70790490ad6ddbc26225ce84f5c3d17b5efacc20:/examples/s4u/app-bittorrent/s4u-peer.cpp

diff --git a/examples/s4u/app-bittorrent/s4u-peer.cpp b/examples/s4u/app-bittorrent/s4u-peer.cpp
index 6d133cc240..d3415ad8b6 100644
--- a/examples/s4u/app-bittorrent/s4u-peer.cpp
+++ b/examples/s4u/app-bittorrent/s4u-peer.cpp
@@ -22,7 +22,6 @@ constexpr int BLOCK_SIZE              = 16384;
 /** Number of blocks asked by each request */
 constexpr unsigned long BLOCKS_REQUESTED = 2UL;
 
-constexpr bool ENABLE_END_GAME_MODE = true;
 constexpr double SLEEP_DURATION     = 1.0;
 #define BITS_TO_BYTES(x) (((x) / 8 + (x) % 8) ? 1 : 0)
 
@@ -44,8 +43,6 @@ Peer::Peer(std::vector<std::string> args)
   }
   xbt_assert(deadline > 0, "Wrong deadline supplied");
 
-  stream = simgrid::s4u::this_actor::get_host()->extension<HostBittorrent>()->getStream();
-
   if (args.size() == 4 && args[3] == "1") {
     bitfield_       = (1U << FILE_PIECES) - 1U;
     bitfield_blocks = (1ULL << (FILE_PIECES * PIECES_BLOCKS)) - 1ULL;
@@ -84,7 +81,7 @@ bool Peer::getPeersFromTracker()
   try {
     XBT_DEBUG("Sending a peer request to the tracker.");
     tracker_mailbox->put(peer_request, TRACKER_COMM_SIZE, GET_PEERS_TIMEOUT);
-  } catch (const simgrid::TimeoutError&) {
+  } catch (const simgrid::TimeoutException&) {
     XBT_DEBUG("Timeout expired when requesting peers to tracker");
     delete peer_request;
     return false;
@@ -97,7 +94,7 @@ bool Peer::getPeersFromTracker()
       if (id != peer_id)
         connected_peers.emplace(peer_id, Connection(peer_id));
     delete answer;
-  } catch (const simgrid::TimeoutError&) {
+  } catch (const simgrid::TimeoutException&) {
     XBT_DEBUG("Timeout expired when requesting peers to tracker");
     return false;
   }
@@ -371,10 +368,6 @@ void Peer::handleMessage()
       XBT_DEBUG(" \t for piece %d (%d,%d)", message->piece, message->block_index,
                 message->block_index + message->block_length);
       xbt_assert(not remote_peer->choked_download);
-      xbt_assert(remote_peer->am_interested || ENABLE_END_GAME_MODE,
-                 "Can't received a piece if I'm not interested without end-game mode!"
-                 "piece (%d) bitfield (%u) remote bitfield (%u)",
-                 message->piece, bitfield_, remote_peer->bitfield);
       xbt_assert(not remote_peer->choked_download, "Can't received a piece if I'm choked !");
       xbt_assert((message->piece >= 0 && static_cast<unsigned int>(message->piece) < FILE_PIECES),
                  "Wrong piece received");
@@ -396,7 +389,6 @@ void Peer::handleMessage()
         }
       } else {
         XBT_DEBUG("However, we already have it");
-        xbt_assert(ENABLE_END_GAME_MODE, "Should not happen because we don't use end game mode !");
         requestNewPieceTo(remote_peer);
       }
       break;
@@ -446,8 +438,6 @@ int Peer::selectPieceToDownload(Connection* remote_peer)
 
   // end game mode
   if (countPieces(current_pieces) >= (FILE_PIECES - countPieces(bitfield_)) && isInterestedBy(remote_peer)) {
-    if (not ENABLE_END_GAME_MODE)
-      return -1;
     int nb_interesting_pieces = 0;
     // compute the number of interesting pieces
     for (unsigned int i = 0; i < FILE_PIECES; i++)
@@ -456,7 +446,8 @@ int Peer::selectPieceToDownload(Connection* remote_peer)
 
     xbt_assert(nb_interesting_pieces != 0);
     // get a random interesting piece
-    int random_piece_index = RngStream_RandInt(stream, 0, nb_interesting_pieces - 1);
+    std::uniform_int_distribution<int> dist(0, nb_interesting_pieces - 1);
+    int random_piece_index = dist(generator);
     int current_index      = 0;
     for (unsigned int i = 0; i < FILE_PIECES; i++) {
       if (hasNotPiece(i) && remote_peer->hasPiece(i)) {
@@ -479,7 +470,8 @@ int Peer::selectPieceToDownload(Connection* remote_peer)
         nb_interesting_pieces++;
     xbt_assert(nb_interesting_pieces != 0);
     // get a random interesting piece
-    int random_piece_index = RngStream_RandInt(stream, 0, nb_interesting_pieces - 1);
+    std::uniform_int_distribution<int> dist(0, nb_interesting_pieces - 1);
+    int random_piece_index = dist(generator);
     int current_index      = 0;
     for (unsigned int i = 0; i < FILE_PIECES; i++) {
       if (hasNotPiece(i) && remote_peer->hasPiece(i) && isNotDownloadingPiece(i)) {
@@ -510,7 +502,11 @@ int Peer::selectPieceToDownload(Connection* remote_peer)
 
     xbt_assert(nb_min_pieces != 0 || not isInterestedByFree(remote_peer));
     // get a random rarest piece
-    int random_rarest_index = RngStream_RandInt(stream, 0, nb_min_pieces - 1);
+    int random_rarest_index = 0;
+    if (nb_min_pieces > 0) {
+      std::uniform_int_distribution<int> dist(0, nb_min_pieces - 1);
+      random_rarest_index = dist(generator);
+    }
     for (unsigned int i = 0; i < FILE_PIECES; i++)
       if (pieces_count[i] == min && hasNotPiece(i) && remote_peer->hasPiece(i) && isNotDownloadingPiece(i)) {
         if (random_rarest_index == current_index) {
@@ -559,7 +555,8 @@ void Peer::updateChokedPeers()
       do {
         // We choose a random peer to unchoke.
         std::unordered_map<int, Connection>::iterator chosen_peer_it = connected_peers.begin();
-        std::advance(chosen_peer_it, RngStream_RandInt(stream, 0, connected_peers.size() - 1));
+        std::uniform_int_distribution<int> dist(0, connected_peers.size() - 1);
+        std::advance(chosen_peer_it, dist(generator));
         chosen_peer = &chosen_peer_it->second;
         if (not chosen_peer->interested || not chosen_peer->choked_upload)
           chosen_peer = nullptr;