xref: /illumos-gate/usr/src/uts/common/sys/loadavg.h (revision 6481fd49)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
 * Copyright 2014 Igor Kozhukhov <ikozhukhov@gmail.com>.
 * Use is subject to license terms.
 */

#ifndef	_SYS_LOADAVG_H
#define	_SYS_LOADAVG_H

#ifdef	__cplusplus
extern "C" {
#endif

#define	LOADAVG_1MIN	0
#define	LOADAVG_5MIN	1
#define	LOADAVG_15MIN	2

#define	LOADAVG_NSTATS	3

#define	S_LOADAVG_SZ	11
#define	S_MOVAVG_SZ	10

struct loadavg_s {
	int lg_cur;		/* current loadavg entry */
	unsigned int lg_len;	/* number entries recorded */
	hrtime_t lg_total;	/* used to temporarily hold load totals */
	hrtime_t lg_loads[S_LOADAVG_SZ];	/* table of recorded entries */
};

#ifdef _KERNEL

extern int getloadavg(int *, int);

#else	/* _KERNEL */

/*
 * This is the user API
 */
extern int getloadavg(double [], int);

#endif	/* _KERNEL */

#ifdef __cplusplus
}
#endif

#endif	/* _SYS_LOADAVG_H */