src/opr/proc.c

   1 /*
   2  * Copyright (C) 2014 by the Massachusetts Institute of Technology.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * * Redistributions of source code must retain the above copyright
  10  *   notice, this list of conditions and the following disclaimer.
  11  *
  12  * * Redistributions in binary form must reproduce the above copyright
  13  *   notice, this list of conditions and the following disclaimer in
  14  *   the documentation and/or other materials provided with the
  15  *   distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  18  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  19  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  20  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
  21  * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
  22  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  24  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  26  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  27  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  28  * OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30
  31 #include <afsconfig.h>
  32 #include <afs/param.h>
  33
  34
  35 #ifndef AFS_NT40_ENV
  36 #include <unistd.h>
  37 #endif
  38 #ifdef HAVE_SYS_RESOURCE_H
  39 #include <sys/resource.h>
  40 #endif
  41
  42 /*
  43  * Return a measure of the size of the process, in kilobytes.
  44  * This is inherently a vague sort of measure, and the different paths
  45  * have different actual meanings, but perhaps it is useful for comparing
  46  * different logs on the same host.
  47  */
  48 afs_int32
  49 opr_procsize(void)
  50 {
  51 #ifdef AFS_NT40_ENV
  52     return -1;
  53 #elif HAVE_STRUCT_RUSAGE_RU_IDRSS
  54     struct rusage usage;
  55     if (getrusage(RUSAGE_SELF, &usage) != 0)
  56         return -1;
  57     else
  58         return usage.ru_idrss;
  59 #else
  60     return (int)((long)sbrk(0) >> 10);
  61 #endif
  62 }