io/getrusage.c

   1 /*
   2  * Copyright (c) 2005 Silicon Graphics, Inc.
   3  * All Rights Reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it would be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write the Free Software Foundation,
  16  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  17  */
  18
  19 #include <xfs/libxfs.h>
  20 #include <xfs/command.h>
  21 #include <xfs/input.h>
  22 #include <sys/time.h>
  23 #include <sys/resource.h>
  24 #include "init.h"
  25
  26 static cmdinfo_t getrusage_cmd;
  27
  28 /*
  29  * Report process resource utilisation.  Formatting options:
  30  * "Shell" format: 0.000u 0.000s 0:00.00 0.0%      0+0k 0+0io 0pf+0w
  31  * Verbose format:
  32  * 0.00user 0.00system 0:00.00elapsed 0%CPU (0avgtext+0avgdata 0maxresident)k
  33  * 0inputs+0outputs (0major+0minor)pagefaults 0swaps
  34  * Comma Separated Value format: 0.000,0.000,00:00:00.00,0.0,0,0,0,0,0,0
  35  */
  36 static int
  37 getrusage_f(
  38         int             argc,
  39         char            **argv)
  40 {
  41         struct timeval  wallclk, timenow;
  42         struct rusage   rusage;
  43         double          usrtime, systime, elapsed, pct_cpu;
  44         char            ts[64];
  45         int             Cflag, vflag;
  46         int             c;
  47
  48         Cflag = vflag = 0;
  49         while ((c = getopt(argc, argv, "Cv")) != EOF) {
  50                 switch (c) {
  51                 case 'C':
  52                         Cflag = 1;
  53                         break;
  54                 case 'v':
  55                         vflag = 1;
  56                         break;
  57                 default:
  58                         return command_usage(&getrusage_cmd);
  59                 }
  60         }
  61         if (optind != argc)
  62                 return command_usage(&getrusage_cmd);
  63
  64         if (getrusage(RUSAGE_SELF, &rusage) < 0) {
  65                 perror("getrusage");
  66                 return 0;
  67         }
  68
  69         gettimeofday(&timenow, NULL);
  70         wallclk = tsub(timenow, stopwatch);
  71         elapsed = (double)wallclk.tv_sec +
  72                   ((double)wallclk.tv_usec / 1000000.0);
  73         usrtime = (double)rusage.ru_utime.tv_sec +
  74                   ((double)rusage.ru_utime.tv_usec / 1000000.0);
  75         systime = (double)rusage.ru_stime.tv_sec +
  76                   ((double)rusage.ru_stime.tv_usec / 1000000.0);
  77         if (elapsed < usrtime + systime)
  78                 pct_cpu = 100.0;
  79         else
  80                 pct_cpu = ((usrtime + systime) / elapsed) * 100;
  81         c = Cflag ? VERBOSE_FIXED_TIME : TERSE_FIXED_TIME;
  82         timestr(&wallclk, ts, sizeof(ts), c);
  83
  84         if (Cflag)
  85                 printf("%.3f,%.3f,%s,%.1f,%ld,%ld,%ld,%ld,%ld,%ld,%ld\n",
  86                         usrtime, systime, ts, pct_cpu,
  87                         rusage.ru_majflt, rusage.ru_minflt, rusage.ru_nswap,
  88                         rusage.ru_inblock, rusage.ru_oublock,
  89                         rusage.ru_nvcsw, rusage.ru_nivcsw);
  90         else if (vflag)
  91                 printf("%.2fuser %.2fsystem %selapsed %.0f%%CPU "
  92                        "(%ldavgtext+%ldavgdata %ldmaxresident)k\n"
  93                        "%ldinputs+%ldoutputs "
  94                         "(%ldmajor+%ldminor)pagefaults %ldswaps\n",
  95                         usrtime, systime, ts, pct_cpu,
  96                         rusage.ru_ixrss, rusage.ru_idrss, rusage.ru_maxrss,
  97                         rusage.ru_inblock, rusage.ru_oublock,
  98                         rusage.ru_majflt, rusage.ru_minflt, rusage.ru_nswap);
  99         else
 100                 printf("%.3fu %.3fs %s %.1f%%\t"
 101                        "%ld+%ldk %ld+%ldio %ldpf+%ldw\n",
 102                         usrtime, systime, ts, pct_cpu,
 103                         rusage.ru_maxrss, rusage.ru_ixrss,
 104                         rusage.ru_inblock, rusage.ru_oublock,
 105                         rusage.ru_majflt, rusage.ru_nswap);
 106         return 0;
 107 }
 108
 109 void
 110 getrusage_init(void)
 111 {
 112         getrusage_cmd.name = _("getrusage");
 113         getrusage_cmd.altname = _("g");
 114         getrusage_cmd.argmin = 0;
 115         getrusage_cmd.argmax = -1;
 116         getrusage_cmd.cfunc = getrusage_f;
 117         getrusage_cmd.flags = CMD_NOFILE_OK | CMD_NOMAP_OK | CMD_FOREIGN_OK;
 118         getrusage_cmd.oneline = _("report process resource usage");
 119
 120         if (expert)
 121                 add_command(&getrusage_cmd);
 122 }