net/base/socket_performance_watcher.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef NET_BASE_SOCKET_PERFORMANCE_WATCHER_H_
   6 #define NET_BASE_SOCKET_PERFORMANCE_WATCHER_H_
   7
   8 #include "base/macros.h"
   9 #include "net/base/net_export.h"
  10
  11 namespace base {
  12 class TimeDelta;
  13 }  // namespace base
  14
  15 namespace net {
  16
  17 // SocketPerformanceWatcher is the base class for recording and aggregating
  18 // socket statistics.
  19 class NET_EXPORT_PRIVATE SocketPerformanceWatcher {
  20  public:
  21   virtual ~SocketPerformanceWatcher() {}
  22
  23   // Called when updated transport layer RTT information is available. This
  24   // must be the transport layer RTT from this device to the remote transport
  25   // layer endpoint. If the request goes through a HTTP proxy, it should
  26   // provide the RTT to the proxy.
  27   virtual void OnUpdatedRTTAvailable(const base::TimeDelta& rtt) = 0;
  28
  29  protected:
  30   SocketPerformanceWatcher() {}
  31
  32  private:
  33   DISALLOW_COPY_AND_ASSIGN(SocketPerformanceWatcher);
  34 };
  35
  36 }  // namespace net
  37
  38 #endif  // NET_BASE_SOCKET_PERFORMANCE_WATCHER_H_