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/*
* Linux 2.6.32 and later Kernel module for VMware MVP Hypervisor Support
*
* Copyright (C) 2010-2012 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#line 5
/**
* @file
*
* @brief timer definitions
*/
#ifndef _MVP_TIMER_H
#define _MVP_TIMER_H
#define INCLUDE_ALLOW_MVPD
#define INCLUDE_ALLOW_VMX
#define INCLUDE_ALLOW_MODULE
#define INCLUDE_ALLOW_MONITOR
#define INCLUDE_ALLOW_GPL
#include "include_check.h"
/**
* @brief timer tick rate as returned by MVPTimer_Now64 as a uint64 and used by
* MVPTimer.when64.
*
* For example 1,000,000 means the counter is in microseconds.
*
* Current implementation requires MVP_TIMER_RATE64 <= 1,000,000,000 and that
* it evenly divide 1,000,000,000. Currently 1,000,000,000 to avoid a multiply
* or divide in MVPTimer_Now64.
*/
#define MVP_TIMER_RATE64 1000000000
/*
* Extract current UNIX-style time_t date/time from the 64-bit time as returned
* by MVPTimer_Now64().
*/
#define MVP_TIMER_RATE64_TIME_T(time64) ((time_t)((time64) / MVP_TIMER_RATE64))
typedef struct MVPTimer MVPTimer;
/**
* @brief timer entry struct
*/
struct MVPTimer {
MVPTimer *next; ///< next in timers list
uint64 when64; ///< absolute expiration
void (*entry)(uint64 now64, MVPTimer *timer); ///< callback entrypoint
void *param; ///< callback parameter
};
void MVPTimer_InitVMX(void);
uint64 MVPTimer_Now64(void);
void MVPTimer_Start(MVPTimer *timer);
_Bool MVPTimer_Cancel(MVPTimer *timer);
#endif
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