mv examples/s4u examples/cpp

[simgrid.git] / examples / cpp / app-bittorrent / s4u-tracker.hpp

diff --git a/examples/cpp/app-bittorrent/s4u-tracker.hpp b/examples/cpp/app-bittorrent/s4u-tracker.hpp
new file mode 100644 (file)
index 0000000..acc8b79
--- /dev/null
+++ b/examples/cpp/app-bittorrent/s4u-tracker.hpp
@@ -0,0 +1,44 @@
+/* Copyright (c) 2012-2021. The SimGrid Team.
+ * All rights reserved.                                                     */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#ifndef BITTORRENT_TRACKER_HPP
+#define BITTORRENT_TRACKER_HPP
+
+#include "s4u-bittorrent.hpp"
+#include <set>
+
+class TrackerQuery {
+  int peer_id; // peer id
+  simgrid::s4u::Mailbox* return_mailbox;
+
+public:
+  explicit TrackerQuery(int peer_id, simgrid::s4u::Mailbox* return_mailbox)
+      : peer_id(peer_id), return_mailbox(return_mailbox){};
+  int getPeerId() const { return peer_id; }
+  simgrid::s4u::Mailbox* getReturnMailbox() const { return return_mailbox; }
+};
+
+class TrackerAnswer {
+  // int interval; // how often the peer should contact the tracker (unused for now)
+  std::set<int> peers; // the peer list the peer has asked for.
+public:
+  explicit TrackerAnswer(int /*interval*/) /*: interval(interval)*/ {}
+  void addPeer(int peer) { peers.insert(peer); }
+  const std::set<int>& getPeers() const { return peers; }
+};
+
+class Tracker {
+  double deadline;
+  simgrid::xbt::random::XbtRandom random{42};
+  simgrid::s4u::Mailbox* mailbox;
+  std::set<int> known_peers;
+
+public:
+  explicit Tracker(std::vector<std::string> args);
+  void operator()();
+};
+
+#endif /* BITTORRENT_TRACKER_HPP */