src/DiskIO/DiskDaemon/DiskDaemonDiskIOModule.cc

   1 /*
   2  * Copyright (C) 1996-2023 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 #include "squid.h"
  10 #include "DiskDaemonDiskIOModule.h"
  11 #include "DiskdIOStrategy.h"
  12 #include "DiskIO/DiskDaemon/DiskdAction.h"
  13 #include "mgr/Registration.h"
  14 #include "Store.h"
  15
  16 DiskDaemonDiskIOModule::DiskDaemonDiskIOModule() : initialised(false)
  17 {
  18     ModuleAdd(*this);
  19 }
  20
  21 DiskDaemonDiskIOModule &
  22 DiskDaemonDiskIOModule::GetInstance()
  23 {
  24     return Instance;
  25 }
  26
  27 void
  28 DiskDaemonDiskIOModule::init()
  29 {
  30     /* We may be reused - for instance in coss - eventually.
  31      * When we do, we either need per-using-module stats (
  32      * no singleton pattern), or we need to refcount the
  33      * initialisation level and handle multiple clients.
  34      * RBC - 20030718.
  35      */
  36     assert(!initialised);
  37     memset(&diskd_stats, '\0', sizeof(diskd_stats));
  38
  39     initialised = true;
  40
  41     registerWithCacheManager();
  42 }
  43
  44 void
  45 DiskDaemonDiskIOModule::registerWithCacheManager(void)
  46 {
  47     Mgr::RegisterAction("diskd", "DISKD Stats", &DiskdAction::Create, 0, 1);
  48 }
  49
  50 void
  51 DiskDaemonDiskIOModule::gracefulShutdown()
  52 {
  53     initialised = false;
  54 }
  55
  56 DiskIOStrategy *
  57 DiskDaemonDiskIOModule::createStrategy()
  58 {
  59     return new DiskdIOStrategy();
  60 }
  61
  62 DiskDaemonDiskIOModule DiskDaemonDiskIOModule::Instance;
  63
  64 char const *
  65 DiskDaemonDiskIOModule::type () const
  66 {
  67     return "DiskDaemon";
  68 }
  69