timecalls.h

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/* BLURB gpl
 
                           Coda File System
                              Release 6
 
          Copyright (c) 1987-2003 Carnegie Mellon University
                  Additional copyrights listed below
 
This  code  is  distributed "AS IS" without warranty of any kind under
the terms of the GNU General Public Licence Version 2, as shown in the
file  LICENSE.  The  technical and financial  contributors to Coda are
listed in the file CREDITS.
 
                        Additional copyrights
                           none currently
 
#*/
 
#ifndef _TIMECALLS_H_
#define _TIMECALLS_H_
 
#ifdef __cplusplus
extern "C" {
#endif __cplusplus
 
#include <stdio.h>
#include <sys/time.h>
#include <sys/file.h>
#include "coda_assert.h"
#include <mach.h>
 
#include <sys/ioctl.h>
#ifdef __cplusplus
}
#endif __cplusplus
 
extern int clockFD;
extern struct hgram Create_Total_hg, Remove_Total_hg, Link_Total_hg;
extern struct hgram Rename_Total_hg, MakeDir_Total_hg, RemoveDir_Total_hg,
    SymLink_Total_hg, SpoolVMLogRecord_hg, PutObjects_Transaction_hg,
    PutObjects_TransactionEnd_hg, PutObjects_Inodes_hg, PutObjects_RVM_hg;
 
#ifdef __STDC__
#define NSC_SHOW_COUNTER_INFO _IO('c', 0)
#define NSC_GET_COUNTER _IOR('c', 1, long)
#else __STDC__
#define NSC_SHOW_COUNTER_INFO _IO(c, 0)
#define NSC_GET_COUNTER _IOR(c, 1, long)
#endif __STDC__
 
#ifdef _TIMECALLS_
#define START_NSC_TIMING(id)                             \
    START_TIMING(id)                                     \
    unsigned long a  id, b  id;                  \
    float timediff  id;                              \
    struct timeval after  id, before  id;        \
    {                                                    \
        if (clockFD > 0)                                 \
            ioctl(clockFD, NSC_GET_COUNTER, &b  id); \
        else                                             \
            gettimeofday(&before  id, 0);            \
    }
 
#define END_NSC_TIMING(id)                                                 \
    {                                                                      \
        END_TIMING(id)                                                     \
        if (clockFD > 0) {                                                 \
            ioctl(clockFD, NSC_GET_COUNTER, &a  id);                   \
            if (a  id > b  id)                                     \
                timediff  id = (a  id - b  id) / 25;           \
            else {                                                         \
                float tmp1       = (b  id - a  id) / 25;           \
                timediff  id = (171798691.84 - tmp1);                  \
            }                                                              \
        } else {                                                           \
            gettimeofday(&after  id, 0);                               \
            timediff  id =                                             \
                (after  id.tv_sec - before  id.tv_sec) * 1000000 + \
                after  id.tv_usec - before  id.tv_usec;            \
        }                                                                  \
        UpdateHisto(&id  _hg, (double)timediff  id);               \
    }
#else /* !_TIMECALLS_ */
#define START_NSC_TIMING(id) START_TIMING(id)
#define END_NSC_TIMING(id) END_TIMING(id)
#endif
 
#endif /* _TIMECALLS_H_ */