/*
 * This file is part of the Palacios Virtual Machine Monitor developed
 * by the V3VEE Project with funding from the United States National 
 * Science Foundation and the Department of Energy.  
 *
 * The V3VEE Project is a joint project between Northwestern University
 * and the University of New Mexico.  You can find out more at 
 * http://www.v3vee.org
 *
 * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu> 
 * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org> 
 * All rights reserved.
 *
 * Author: Jack Lange <jarusl@cs.northwestern.edu>
 *
 * This is free software.  You are permitted to use,
 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
 */

#ifndef __VMM_TIME_H
#define __VMM_TIME_H

#ifdef __V3VEE__

#include <palacios/vmm_types.h>
#include <palacios/vmm_list.h>

struct guest_info;

struct vm_time {
    uint32_t cpu_freq; // in kHZ

    // Total number of guest run time cycles
    ullong_t guest_tsc;

    // Cache value to help calculate the guest_tsc
    ullong_t cached_host_tsc;

    // The number of cycles pending for notification to the timers
    //ullong_t pending_cycles;

    // Installed Timers 
    uint_t num_timers;
    struct list_head timers;
};




struct vm_timer_ops {
    void (*update_time)(ullong_t cpu_cycles, ullong_t cpu_freq, void * priv_data);

};

struct vm_timer {
    void * private_data;
    struct vm_timer_ops * ops;

    struct list_head timer_link;
};




int v3_add_timer(struct guest_info * info, struct vm_timer_ops * ops, void * private_data);
int v3_remove_timer(struct guest_info * info, struct vm_timer * timer);


void v3_update_time(struct guest_info * info, ullong_t cycles);


void v3_init_time(struct guest_info * info);

#endif // !__V3VEE__

#endif