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/*
 * Copyright (c) 2000 Silicon Graphics, Inc.  All Rights Reserved.
 * 
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2.1 of the GNU Lesser General Public
 * License as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it would be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * Further, this software is distributed without any warranty that it is
 * free of the rightful claim of any third person regarding infringement
 * or the like.  Any license provided herein, whether implied or
 * otherwise, applies only to this software file.  Patent licenses, if
 * any, provided herein do not apply to combinations of this program with
 * other software, or any other product whatsoever.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program; if not, write the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307,
 * USA.
 * 
 * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 * Mountain View, CA 94043, or:
 * 
 * http://www.sgi.com 
 * 
 * For further information regarding this notice, see: 
 * 
 * http://oss.sgi.com/projects/GenInfo/NoticeExplan
 */
/*
 * cms_stats.h
 *
 * This file contains data structure definitions and function
 * prototypes that the CMS clients use to gather timing
 * information from CMS. 
 */

#ident	"$Id: cms_stats.h,v 1.1 2000/08/31 19:16:32 vasa Exp $"

#define CMS_STATS_MIN_BUCKETS	 4
#define CMS_STATS_MAX_BUCKETS	32

typedef struct cms_stats_per_node_s {
    ci_nodeid_t		nodeid;
    char		nodename[CI_MAX_NODE_NAME];
    int			bucket[CMS_STATS_MAX_BUCKETS];
} cms_stats_per_node_t;

typedef struct cms_stats_s {
    int			 generation;	/* Generation number of the
					 * current set of stats.
					 * The generation number is 
					 * incremented every time a
					 * reconfiguration occurs during
					 * the life of a cmsd. */
    struct timeval	 stats_since;	/* Time when stats gathering
					 * stated. */
    struct timeval	 stats_until;	/* Time this information dump
					 * was taken by cmsd. */
    int			 nnodes;	/* Number of nodes. */
    int			 nbuckets;	/* Number of timing buckets used. */
    ci_clock_t		 hb_interval;	/* Heartbeat interval */
    ci_clock_t		 node_timeout;	/* Node timeout. */
    ci_nodeid_t		 my_node_id;	/* My own nodeid. */
    cms_stats_per_node_t nodes_info[CI_MAX_NODES];
    					/* Per node information */
} cms_stats_t;

ci_err_t	cms_stats_register(char		*name,
				   int		signo);
ci_err_t	cms_stats_get(cms_stats_t	*cms_stats_p);
ci_err_t	cms_stats_unregister(void);