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/* THIS IS OPEN SOURCE CODE */

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/** 

 * @file    linux-coretemp.h

 * CVS:     $Id$

 * @author  James Ralph

 *			ralph@eecs.utk.edu

 *

 * @ingroup papi_components

 *

 * @brief coretemp component

 *  This file has the source code for a component that enables PAPI-C to access

 *  hardware monitoring sensors through the coretemp sysfs interface. This code 

 *  will dynamically create a native events table for all the sensors that can 

 *  be found under /sys/class/hwmon/hwmon[0-9]+.

 *

 * Notes: 

 *  - Based heavily upon the lm-sensors component by Heike Jagode.

 */

#ifndef _PAPI_CORETEMP_H

#define _PAPI_CORETEMP_H

#include <unistd.h>

#include <dirent.h>

/*************************  DEFINES SECTION  ***********************************

 *******************************************************************************/

/* this number assumes that there will never be more events than indicated */

#define CORETEMP_MAX_COUNTERS 512

/** Structure that stores private information of each event */

typedef struct CORETEMP_register

{

	/* This is used by the framework.It likes it to be !=0 to do somehting */

	unsigned int selector;

	/* These are the only information needed to locate a libsensors event */

	int subfeat_nr;

} CORETEMP_register_t;

/*

 * The following structures mimic the ones used by other components. It is more

 * convenient to use them like that as programming with PAPI makes specific

 * assumptions for them.

 */

/** This structure is used to build the table of events */

typedef struct CORETEMP_native_event_entry

{

  char name[PAPI_MAX_STR_LEN];

  char units[PAPI_MIN_STR_LEN];

  char description[PAPI_MAX_STR_LEN];

  char path[PATH_MAX];

  int stone; /* some counters are set in stone, a max temperature is just that... */

  long value;

  CORETEMP_register_t resources;

} CORETEMP_native_event_entry_t;

typedef struct CORETEMP_reg_alloc

{

	CORETEMP_register_t ra_bits;

} CORETEMP_reg_alloc_t;

typedef struct CORETEMP_control_state

{

	long long counts[CORETEMP_MAX_COUNTERS];	// used for caching

	long long lastupdate;

} CORETEMP_control_state_t;

typedef struct CORETEMP_context

{

	CORETEMP_control_state_t state;

} CORETEMP_context_t;

/*************************  GLOBALS SECTION  ***********************************

 *******************************************************************************/

#endif /* _PAPI_CORETEMP_H */