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/*
* Copyright (c) 2006-2007, XenSource Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef XEN_VBD_METRICS_H
#define XEN_VBD_METRICS_H
#include <xen/api/xen_common.h>
#include <xen/api/xen_vbd_metrics_decl.h>
/*
* The VBD_metrics class.
*
* The metrics associated with a virtual block device.
*/
/**
* Free the given xen_vbd_metrics. The given handle must have been
* allocated by this library.
*/
extern void
xen_vbd_metrics_free(xen_vbd_metrics vbd_metrics);
typedef struct xen_vbd_metrics_set
{
size_t size;
xen_vbd_metrics *contents[];
} xen_vbd_metrics_set;
/**
* Allocate a xen_vbd_metrics_set of the given size.
*/
extern xen_vbd_metrics_set *
xen_vbd_metrics_set_alloc(size_t size);
/**
* Free the given xen_vbd_metrics_set. The given set must have been
* allocated by this library.
*/
extern void
xen_vbd_metrics_set_free(xen_vbd_metrics_set *set);
typedef struct xen_vbd_metrics_record
{
xen_vbd_metrics handle;
char *uuid;
double io_read_kbs;
double io_write_kbs;
time_t last_updated;
} xen_vbd_metrics_record;
/**
* Allocate a xen_vbd_metrics_record.
*/
extern xen_vbd_metrics_record *
xen_vbd_metrics_record_alloc(void);
/**
* Free the given xen_vbd_metrics_record, and all referenced values.
* The given record must have been allocated by this library.
*/
extern void
xen_vbd_metrics_record_free(xen_vbd_metrics_record *record);
typedef struct xen_vbd_metrics_record_opt
{
bool is_record;
union
{
xen_vbd_metrics handle;
xen_vbd_metrics_record *record;
} u;
} xen_vbd_metrics_record_opt;
/**
* Allocate a xen_vbd_metrics_record_opt.
*/
extern xen_vbd_metrics_record_opt *
xen_vbd_metrics_record_opt_alloc(void);
/**
* Free the given xen_vbd_metrics_record_opt, and all referenced
* values. The given record_opt must have been allocated by this library.
*/
extern void
xen_vbd_metrics_record_opt_free(xen_vbd_metrics_record_opt *record_opt);
typedef struct xen_vbd_metrics_record_set
{
size_t size;
xen_vbd_metrics_record *contents[];
} xen_vbd_metrics_record_set;
/**
* Allocate a xen_vbd_metrics_record_set of the given size.
*/
extern xen_vbd_metrics_record_set *
xen_vbd_metrics_record_set_alloc(size_t size);
/**
* Free the given xen_vbd_metrics_record_set, and all referenced
* values. The given set must have been allocated by this library.
*/
extern void
xen_vbd_metrics_record_set_free(xen_vbd_metrics_record_set *set);
typedef struct xen_vbd_metrics_record_opt_set
{
size_t size;
xen_vbd_metrics_record_opt *contents[];
} xen_vbd_metrics_record_opt_set;
/**
* Allocate a xen_vbd_metrics_record_opt_set of the given size.
*/
extern xen_vbd_metrics_record_opt_set *
xen_vbd_metrics_record_opt_set_alloc(size_t size);
/**
* Free the given xen_vbd_metrics_record_opt_set, and all referenced
* values. The given set must have been allocated by this library.
*/
extern void
xen_vbd_metrics_record_opt_set_free(xen_vbd_metrics_record_opt_set *set);
/**
* Get a record containing the current state of the given VBD_metrics.
*/
extern bool
xen_vbd_metrics_get_record(xen_session *session, xen_vbd_metrics_record **result, xen_vbd_metrics vbd_metrics);
/**
* Get a reference to the VBD_metrics instance with the specified UUID.
*/
extern bool
xen_vbd_metrics_get_by_uuid(xen_session *session, xen_vbd_metrics *result, char *uuid);
/**
* Get the uuid field of the given VBD_metrics.
*/
extern bool
xen_vbd_metrics_get_uuid(xen_session *session, char **result, xen_vbd_metrics vbd_metrics);
/**
* Get the io/read_kbs field of the given VBD_metrics.
*/
extern bool
xen_vbd_metrics_get_io_read_kbs(xen_session *session, double *result, xen_vbd_metrics vbd_metrics);
/**
* Get the io/write_kbs field of the given VBD_metrics.
*/
extern bool
xen_vbd_metrics_get_io_write_kbs(xen_session *session, double *result, xen_vbd_metrics vbd_metrics);
/**
* Get the last_updated field of the given VBD_metrics.
*/
extern bool
xen_vbd_metrics_get_last_updated(xen_session *session, time_t *result, xen_vbd_metrics vbd_metrics);
/**
* Return a list of all the VBD_metrics instances known to the system.
*/
extern bool
xen_vbd_metrics_get_all(xen_session *session, struct xen_vbd_metrics_set **result);
#endif
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