Add class QuicMultipathReceivedPacketManager (not in use currently).

net/quic/quic_multipath_received_packet_manager.cc

+// Copyright (c) 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "net/quic/quic_multipath_received_packet_manager.h"
+
+#include "base/stl_util.h"
+
+namespace net {
+
+QuicMultipathReceivedPacketManager::QuicMultipathReceivedPacketManager(
+    QuicConnectionStats* stats) {
+  path_managers_[kDefaultPathId] = new QuicReceivedPacketManager(stats);
+}
+
+QuicMultipathReceivedPacketManager::~QuicMultipathReceivedPacketManager() {
+  STLDeleteValues(&path_managers_);
+}
+
+void QuicMultipathReceivedPacketManager::OnPathCreated(
+    QuicPathId path_id,
+    QuicConnectionStats* stats) {
+  if (path_managers_[path_id] != nullptr) {
+    LOG(DFATAL) << "Received packet manager of path already exists: "
+                << static_cast<uint32>(path_id);
+    return;
+  }
+
+  path_managers_[path_id] = new QuicReceivedPacketManager(stats);
+}
+
+void QuicMultipathReceivedPacketManager::OnPathClosed(QuicPathId path_id) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL) << "Received packet manager of path does not exist: "
+                << static_cast<uint32>(path_id);
+    return;
+  }
+
+  delete manager;
+  path_managers_.erase(path_id);
+}
+
+void QuicMultipathReceivedPacketManager::RecordPacketReceived(
+    QuicPathId path_id,
+    QuicByteCount bytes,
+    const QuicPacketHeader& header,
+    QuicTime receipt_time) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL) << "Received a packet on a non-existent path.";
+    return;
+  }
+
+  manager->RecordPacketReceived(bytes, header, receipt_time);
+}
+
+void QuicMultipathReceivedPacketManager::RecordPacketRevived(
+    QuicPathId path_id,
+    QuicPacketNumber packet_number) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL) << "Revived a packet on a non-existent path.";
+    return;
+  }
+
+  manager->RecordPacketRevived(packet_number);
+}
+
+bool QuicMultipathReceivedPacketManager::IsMissing(
+    QuicPathId path_id,
+    QuicPacketNumber packet_number) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL) << "Check whether a packet is missing on a non-existent path.";
+    return true;
+  }
+
+  return manager->IsMissing(packet_number);
+}
+
+bool QuicMultipathReceivedPacketManager::IsAwaitingPacket(
+    QuicPathId path_id,
+    QuicPacketNumber packet_number) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL) << "Check whether a packet is awaited on a non-existent path.";
+    return false;
+  }
+
+  return manager->IsAwaitingPacket(packet_number);
+}
+
+void QuicMultipathReceivedPacketManager::UpdateReceivedPacketInfo(
+    std::vector<QuicAckFrame>* ack_frames,
+    QuicTime approximate_now,
+    bool force_all_paths) {
+  QuicAckFrame ack_frame;
+  for (std::pair<QuicPathId, QuicReceivedPacketManager*>
+           per_path_received_packet_manager : path_managers_) {
+    if (!force_all_paths &&
+        !per_path_received_packet_manager.second->ack_frame_updated()) {
+      continue;
+    }
+    per_path_received_packet_manager.second->UpdateReceivedPacketInfo(
+        &ack_frame, approximate_now);
+    ack_frames->push_back(ack_frame);
+  }
+}
+
+void QuicMultipathReceivedPacketManager::UpdatePacketInformationSentByPeer(
+    const std::vector<QuicStopWaitingFrame>& stop_waitings) {
+  for (QuicStopWaitingFrame stop_waiting : stop_waitings) {
+    QuicReceivedPacketManager* manager = path_managers_[stop_waiting.path_id];
+    if (manager != nullptr) {
+      manager->UpdatePacketInformationSentByPeer(stop_waiting);
+    }
+  }
+}
+
+bool QuicMultipathReceivedPacketManager::HasNewMissingPackets(
+    QuicPathId path_id) const {
+  MultipathReceivedPacketManagerMap::const_iterator it =
+      path_managers_.find(path_id);
+  if (it == path_managers_.end()) {
+    LOG(DFATAL)
+        << "Check whether has new missing packets on a non-existent path.";
+    return false;
+  }
+
+  return it->second->HasNewMissingPackets();
+}
+
+QuicPacketNumber
+QuicMultipathReceivedPacketManager::GetPeerLeastPacketAwaitingAck(
+    QuicPathId path_id) {
+  QuicReceivedPacketManager* manager = path_managers_[path_id];
+  if (manager == nullptr) {
+    LOG(DFATAL)
+        << "Try to get peer_least_packet_awaiting_ack of a non-existent path.";
+    return false;
+  }
+
+  return manager->peer_least_packet_awaiting_ack();
+}
+
+}  // namespace net