sysdeps/unix/sysv/linux/tv32-compat.h

   1 /* Compatibility definitions for 'struct timeval' with 32-bit time_t.
   2    Copyright (C) 2020-2023 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _TV32_COMPAT_H
  20 #define _TV32_COMPAT_H 1
  21
  22 #include <bits/types/time_t.h>
  23 #include <sys/resource.h>
  24
  25 /* Structures containing 'struct timeval' with 32-bit time_t.  */
  26 struct __itimerval32
  27 {
  28   struct __timeval32 it_interval;
  29   struct __timeval32 it_value;
  30 };
  31
  32 struct __rusage32
  33 {
  34   struct __timeval32 ru_utime;  /* user time used */
  35   struct __timeval32 ru_stime;  /* system time used */
  36   long ru_maxrss;               /* maximum resident set size */
  37   long ru_ixrss;                /* integral shared memory size */
  38   long ru_idrss;                /* integral unshared data size */
  39   long ru_isrss;                /* integral unshared stack size */
  40   long ru_minflt;               /* page reclaims */
  41   long ru_majflt;               /* page faults */
  42   long ru_nswap;                /* swaps */
  43   long ru_inblock;              /* block input operations */
  44   long ru_oublock;              /* block output operations */
  45   long ru_msgsnd;               /* messages sent */
  46   long ru_msgrcv;               /* messages received */
  47   long ru_nsignals;             /* signals received */
  48   long ru_nvcsw;                /* voluntary context switches */
  49   long ru_nivcsw;               /* involuntary " */
  50 };
  51
  52 static inline void
  53 rusage32_to_rusage64 (const struct __rusage32 *restrict r32,
  54                     struct __rusage64 *restrict r64)
  55 {
  56   /* Make sure the entire output structure is cleared, including
  57      padding and reserved fields.  */
  58   memset (r64, 0, sizeof *r64);
  59
  60   r64->ru_utime    = valid_timeval32_to_timeval64 (r32->ru_utime);
  61   r64->ru_stime    = valid_timeval32_to_timeval64 (r32->ru_stime);
  62   r64->ru_maxrss   = r32->ru_maxrss;
  63   r64->ru_ixrss    = r32->ru_ixrss;
  64   r64->ru_idrss    = r32->ru_idrss;
  65   r64->ru_isrss    = r32->ru_isrss;
  66   r64->ru_minflt   = r32->ru_minflt;
  67   r64->ru_majflt   = r32->ru_majflt;
  68   r64->ru_nswap    = r32->ru_nswap;
  69   r64->ru_inblock  = r32->ru_inblock;
  70   r64->ru_oublock  = r32->ru_oublock;
  71   r64->ru_msgsnd   = r32->ru_msgsnd;
  72   r64->ru_msgrcv   = r32->ru_msgrcv;
  73   r64->ru_nsignals = r32->ru_nsignals;
  74   r64->ru_nvcsw    = r32->ru_nvcsw;
  75   r64->ru_nivcsw   = r32->ru_nivcsw;
  76 }
  77
  78 static inline void
  79 rusage64_to_rusage32 (const struct __rusage64 *restrict r64,
  80                     struct __rusage32 *restrict r32)
  81 {
  82   /* Make sure the entire output structure is cleared, including
  83      padding and reserved fields.  */
  84   memset (r32, 0, sizeof *r32);
  85
  86   r32->ru_utime    = valid_timeval64_to_timeval32 (r64->ru_utime);
  87   r32->ru_stime    = valid_timeval64_to_timeval32 (r64->ru_stime);
  88   r32->ru_maxrss   = r64->ru_maxrss;
  89   r32->ru_ixrss    = r64->ru_ixrss;
  90   r32->ru_idrss    = r64->ru_idrss;
  91   r32->ru_isrss    = r64->ru_isrss;
  92   r32->ru_minflt   = r64->ru_minflt;
  93   r32->ru_majflt   = r64->ru_majflt;
  94   r32->ru_nswap    = r64->ru_nswap;
  95   r32->ru_inblock  = r64->ru_inblock;
  96   r32->ru_oublock  = r64->ru_oublock;
  97   r32->ru_msgsnd   = r64->ru_msgsnd;
  98   r32->ru_msgrcv   = r64->ru_msgrcv;
  99   r32->ru_nsignals = r64->ru_nsignals;
 100   r32->ru_nvcsw    = r64->ru_nvcsw;
 101   r32->ru_nivcsw   = r64->ru_nivcsw;
 102 }
 103
 104 #endif /* tv32-compat.h */