usr/src/uts/common/sys/loadavg.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Copyright 2014 Igor Kozhukhov <ikozhukhov@gmail.com>.
  25  * Use is subject to license terms.
  26  */
  27
  28 #ifndef _SYS_LOADAVG_H
  29 #define _SYS_LOADAVG_H
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #define LOADAVG_1MIN    0
  36 #define LOADAVG_5MIN    1
  37 #define LOADAVG_15MIN   2
  38
  39 #define LOADAVG_NSTATS  3
  40
  41 #define S_LOADAVG_SZ    11
  42 #define S_MOVAVG_SZ     10
  43
  44 struct loadavg_s {
  45         int lg_cur;             /* current loadavg entry */
  46         unsigned int lg_len;    /* number entries recorded */
  47         hrtime_t lg_total;      /* used to temporarily hold load totals */
  48         hrtime_t lg_loads[S_LOADAVG_SZ];        /* table of recorded entries */
  49 };
  50
  51 #ifdef _KERNEL
  52
  53 extern int getloadavg(int *, int);
  54
  55 #else   /* _KERNEL */
  56
  57 /*
  58  * This is the user API
  59  */
  60 extern int getloadavg(double [], int);
  61
  62 #endif  /* _KERNEL */
  63
  64 #ifdef __cplusplus
  65 }
  66 #endif
  67
  68 #endif  /* _SYS_LOADAVG_H */