/*
 * Copyright 2000, International Business Machines Corporation and others.
 * All Rights Reserved.
 * 
 * This software has been released under the terms of the IBM Public
 * License.  For details, see the LICENSE file in the top-level source
 * directory or online at http://www.openafs.org/dl/license10.html
 */

/* statistics-gathering package */

#include <afsconfig.h>
#include "afs/param.h"

RCSID
    ("$Header: /cvs/openafs/src/afs/afs_stat.c,v 1.9 2003/07/15 23:14:13 shadow Exp $");

#include "afs/sysincludes.h"	/*Standard vendor system headers */
#include "afsincludes.h"	/*AFS-based standard headers */
#include "afs_stats.h"

struct afs_CMStats afs_cmstats;
struct afs_stats_CMPerf afs_stats_cmperf;
struct afs_stats_CMFullPerf afs_stats_cmfullperf;
afs_int32 afs_stats_XferSumBytes[AFS_STATS_NUM_FS_XFER_OPS];



/*
 * afs_InitStats
 *
 * Description:
 *	Initialize all of the CM statistics structures.
 *
 * Parameters:
 *	None.
 *
 * Environment:
 *	This routine should only be called once, at initialization time.
 */
void
afs_InitStats(void)
{
    struct afs_stats_opTimingData *opTimeP;	/*Ptr to curr timing struct */
    struct afs_stats_xferData *xferP;	/*Ptr to curr xfer struct */
    int currIdx;		/*Current index */

    /*
     * First step is to zero everything out.
     */
    memset((char *)(&afs_cmstats), 0, sizeof(struct afs_CMStats));
    memset((char *)(&afs_stats_cmperf), 0, sizeof(struct afs_stats_CMPerf));
    memset((char *)(&afs_stats_cmfullperf), 0,
	   sizeof(struct afs_stats_CMFullPerf));

    /*
     * Some fields really should be non-zero at the start, so set 'em up.
     */
    afs_stats_cmperf.srvNumBuckets = NSERVERS;

    opTimeP = &(afs_stats_cmfullperf.rpc.fsRPCTimes[0]);
    for (currIdx = 0; currIdx < AFS_STATS_NUM_FS_RPC_OPS;
	 currIdx++, opTimeP++)
	opTimeP->minTime.tv_sec = 999999;

    opTimeP = &(afs_stats_cmfullperf.rpc.cmRPCTimes[0]);
    for (currIdx = 0; currIdx < AFS_STATS_NUM_CM_RPC_OPS;
	 currIdx++, opTimeP++)
	opTimeP->minTime.tv_sec = 999999;

    xferP = &(afs_stats_cmfullperf.rpc.fsXferTimes[0]);
    for (currIdx = 0; currIdx < AFS_STATS_NUM_FS_XFER_OPS; currIdx++, xferP++) {
	xferP->minTime.tv_sec = 999999;
	xferP->minBytes = 999999999;
    }
}

void
afs_GetCMStat(char **ptr, unsigned *size)
{
#ifndef AFS_NOSTATS
    AFS_STATCNT(afs_GetCMStat);
    *ptr = (char *)&afs_cmstats;
    *size = sizeof(afs_cmstats);
#endif /* AFS_NOSTATS */
}

void
afs_AddToMean(struct afs_MeanStats *oldMean, afs_int32 newValue)
{
    AFS_STATCNT(afs_AddToMean);
}
