globals.h

nandflash文件系统源代码

//---------------------------------------------------------- -*- Mode: C++ -*-
// $Id: Globals.h 71 2008-07-07 15:49:14Z sriramsrao $ 
//
// Created 2006/10/09
// Author: Sriram Rao
//
// Copyright 2008 Quantcast Corp.
// Copyright 2006-2008 Kosmix Corp.
//
// This file is part of Kosmos File System (KFS).
//
// Licensed under the Apache License, Version 2.0
// (the "License"); you may not use this file except in compliance with
// the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
// implied. See the License for the specific language governing
// permissions and limitations under the License.
//
// \brief Define the globals needed by the KFS IO library.  These
//globals are also available to any app that uses the KFS IO library.
//----------------------------------------------------------------------------

#ifndef LIBKFSIO_GLOBALS_H
#define LIBKFSIO_GLOBALS_H

#include "DiskManager.h"
#include "NetManager.h"
#include "EventManager.h"
#include "NetKicker.h"
#include "Counter.h"

namespace KFS
{
    namespace libkfsio
    {

        struct Globals_t {
            DiskManager diskManager;
            NetManager netManager;
            EventManager eventManager;
            CounterManager counterManager;
            NetKicker netKicker;
            // Commonly needed counters
            Counter ctrOpenNetFds;
            Counter ctrOpenDiskFds;
            Counter ctrNetBytesRead;
            Counter ctrNetBytesWritten;
            Counter ctrDiskBytesRead;
            Counter ctrDiskBytesWritten;
            // track the # of failed read/writes
            Counter ctrDiskIOErrors;
        };

        void InitGlobals();

        Globals_t & globals();
    }
}

#endif // LIBKFSIO_GLOBALS_H