BSD 4_3_Tahoe release

[unix-history] / usr / src / usr.lib / sendmail / src / stats.c

/*
* Copyright (c) 1983 Eric P. Allman
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by the University of California, Berkeley.  The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/

#ifndef lint
static char sccsid[] = "@(#)stats.c     5.10 (Berkeley) 6/30/88";
#endif /* not lint */

# include "sendmail.h"
# include "mailstats.h"

struct statistics       Stat;

#define ONE_K           1000            /* one thousand (twenty-four?) */
#define KBYTES(x)       (((x) + (ONE_K - 1)) / ONE_K)
\f/*
**  MARKSTATS -- mark statistics
*/

markstats(e, to)
       register ENVELOPE *e;
       register ADDRESS *to;
{
       if (to == NULL)
       {
               if (e->e_from.q_mailer != NULL)
               {
                       Stat.stat_nf[e->e_from.q_mailer->m_mno]++;
                       Stat.stat_bf[e->e_from.q_mailer->m_mno] +=
                               KBYTES(CurEnv->e_msgsize);
               }
       }
       else
       {
               Stat.stat_nt[to->q_mailer->m_mno]++;
               Stat.stat_bt[to->q_mailer->m_mno] += KBYTES(CurEnv->e_msgsize);
       }
}
\f/*
**  POSTSTATS -- post statistics in the statistics file
**
**      Parameters:
**              sfile -- the name of the statistics file.
**
**      Returns:
**              none.
**
**      Side Effects:
**              merges the Stat structure with the sfile file.
*/

poststats(sfile)
       char *sfile;
{
       register int fd;
       struct statistics stat;
       extern off_t lseek();

       if (sfile == NULL)
               return;

       (void) time(&Stat.stat_itime);
       Stat.stat_size = sizeof Stat;

       fd = open(sfile, 2);
       if (fd < 0)
       {
               errno = 0;
               return;
       }
       if (read(fd, (char *) &stat, sizeof stat) == sizeof stat &&
           stat.stat_size == sizeof stat)
       {
               /* merge current statistics into statfile */
               register int i;

               for (i = 0; i < MAXMAILERS; i++)
               {
                       stat.stat_nf[i] += Stat.stat_nf[i];
                       stat.stat_bf[i] += Stat.stat_bf[i];
                       stat.stat_nt[i] += Stat.stat_nt[i];
                       stat.stat_bt[i] += Stat.stat_bt[i];
               }
       }
       else
               bcopy((char *) &Stat, (char *) &stat, sizeof stat);

       /* write out results */
       (void) lseek(fd, (off_t) 0, 0);
       (void) write(fd, (char *) &stat, sizeof stat);
       (void) close(fd);
}