src/PingData.h

   1 /*
   2  * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
   3  *
   4  * Squid software is distributed under GPLv2+ license and includes
   5  * contributions from numerous individuals and organizations.
   6  * Please see the COPYING and CONTRIBUTORS files for details.
   7  */
   8
   9 #ifndef SQUID_SRC_PINGDATA_H
  10 #define SQUID_SRC_PINGDATA_H
  11
  12 #include "mem/PoolingAllocator.h"
  13
  14 #include <map>
  15
  16 class PeerSelector;
  17 class PeerSelectorPingMonitor;
  18
  19 typedef std::pair<const timeval, PeerSelector *> WaitingPeerSelector;
  20 /// waiting PeerSelector objects, ordered by their absolute deadlines
  21 typedef std::multimap<timeval, PeerSelector *, std::less<timeval>, PoolingAllocator<WaitingPeerSelector> > WaitingPeerSelectors;
  22 typedef WaitingPeerSelectors::iterator WaitingPeerSelectorPosition;
  23
  24 /// ICP probing of cache_peers during peer selection
  25 class ping_data
  26 {
  27
  28 public:
  29     ping_data();
  30
  31     /// no ICP responses are expected beyond the returned absolute time
  32     /// \returns start + timeout
  33     timeval deadline() const;
  34
  35     struct timeval start;
  36
  37     struct timeval stop;
  38     int n_sent;
  39     int n_recv;
  40     int n_replies_expected;
  41     int timeout;        /* msec */
  42     int timedout;
  43     int w_rtt;
  44     int p_rtt;
  45
  46 private:
  47     friend PeerSelectorPingMonitor;
  48     /// maintained by PeerSelectorPingMonitor
  49     WaitingPeerSelectorPosition monitorRegistration;
  50 };
  51
  52 #endif /* SQUID_SRC_PINGDATA_H */
  53