xref: /illumos-gate/usr/src/uts/common/sys/loadavg.h (revision 6481fd49)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
57257d1b4Sraf  * Common Development and Distribution License (the "License").
67257d1b4Sraf  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
217257d1b4Sraf 
227c478bd9Sstevel@tonic-gate /*
237257d1b4Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24*6481fd49SIgor Kozhukhov  * Copyright 2014 Igor Kozhukhov <ikozhukhov@gmail.com>.
257257d1b4Sraf  * Use is subject to license terms.
267c478bd9Sstevel@tonic-gate  */
277c478bd9Sstevel@tonic-gate 
287c478bd9Sstevel@tonic-gate #ifndef	_SYS_LOADAVG_H
297c478bd9Sstevel@tonic-gate #define	_SYS_LOADAVG_H
307c478bd9Sstevel@tonic-gate 
317c478bd9Sstevel@tonic-gate #ifdef	__cplusplus
327c478bd9Sstevel@tonic-gate extern "C" {
337c478bd9Sstevel@tonic-gate #endif
347c478bd9Sstevel@tonic-gate 
357c478bd9Sstevel@tonic-gate #define	LOADAVG_1MIN	0
367c478bd9Sstevel@tonic-gate #define	LOADAVG_5MIN	1
377c478bd9Sstevel@tonic-gate #define	LOADAVG_15MIN	2
387c478bd9Sstevel@tonic-gate 
397c478bd9Sstevel@tonic-gate #define	LOADAVG_NSTATS	3
407c478bd9Sstevel@tonic-gate 
41*6481fd49SIgor Kozhukhov #define	S_LOADAVG_SZ	11
42*6481fd49SIgor Kozhukhov #define	S_MOVAVG_SZ	10
43*6481fd49SIgor Kozhukhov 
44*6481fd49SIgor Kozhukhov struct loadavg_s {
45*6481fd49SIgor Kozhukhov 	int lg_cur;		/* current loadavg entry */
46*6481fd49SIgor Kozhukhov 	unsigned int lg_len;	/* number entries recorded */
47*6481fd49SIgor Kozhukhov 	hrtime_t lg_total;	/* used to temporarily hold load totals */
48*6481fd49SIgor Kozhukhov 	hrtime_t lg_loads[S_LOADAVG_SZ];	/* table of recorded entries */
49*6481fd49SIgor Kozhukhov };
50*6481fd49SIgor Kozhukhov 
517c478bd9Sstevel@tonic-gate #ifdef _KERNEL
527c478bd9Sstevel@tonic-gate 
537c478bd9Sstevel@tonic-gate extern int getloadavg(int *, int);
547c478bd9Sstevel@tonic-gate 
557c478bd9Sstevel@tonic-gate #else	/* _KERNEL */
567c478bd9Sstevel@tonic-gate 
577c478bd9Sstevel@tonic-gate /*
587c478bd9Sstevel@tonic-gate  * This is the user API
597c478bd9Sstevel@tonic-gate  */
607c478bd9Sstevel@tonic-gate extern int getloadavg(double [], int);
617c478bd9Sstevel@tonic-gate 
627c478bd9Sstevel@tonic-gate #endif	/* _KERNEL */
637c478bd9Sstevel@tonic-gate 
647c478bd9Sstevel@tonic-gate #ifdef __cplusplus
657c478bd9Sstevel@tonic-gate }
667c478bd9Sstevel@tonic-gate #endif
677c478bd9Sstevel@tonic-gate 
687c478bd9Sstevel@tonic-gate #endif	/* _SYS_LOADAVG_H */
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