DiskDaemonDiskIOModule.cc

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
#include "squid.h"
#include "DiskDaemonDiskIOModule.h"
#include "DiskdIOStrategy.h"
#include "DiskIO/DiskDaemon/DiskdAction.h"
#include "mgr/Registration.h"
#include "Store.h"
 
DiskDaemonDiskIOModule::DiskDaemonDiskIOModule() : initialised(false)
{
    ModuleAdd(*this);
}
 
DiskDaemonDiskIOModule &
DiskDaemonDiskIOModule::GetInstance()
{
    return Instance;
}
 
void
DiskDaemonDiskIOModule::init()
{
    /* We may be reused - for instance in coss - eventually.
     * When we do, we either need per-using-module stats (
     * no singleton pattern), or we need to refcount the
     * initialisation level and handle multiple clients.
     * RBC - 20030718.
     */
    assert(!initialised);
    memset(&diskd_stats, '\0', sizeof(diskd_stats));
 
    initialised = true;
 
    registerWithCacheManager();
}
 
void
DiskDaemonDiskIOModule::registerWithCacheManager(void)
{
    Mgr::RegisterAction("diskd", "DISKD Stats", &DiskdAction::Create, 0, 1);
}
 
void
DiskDaemonDiskIOModule::gracefulShutdown()
{
    initialised = false;
}
 
DiskIOStrategy *
DiskDaemonDiskIOModule::createStrategy()
{
    return new DiskdIOStrategy();
}
 
DiskDaemonDiskIOModule DiskDaemonDiskIOModule::Instance;
 
char const *
DiskDaemonDiskIOModule::type () const
{
    return "DiskDaemon";
}