sysdeps/unix/sysv/linux/sparc/getsysstats.c

   1 /* Determine various system internal values, Linux/Sparc version.
   2    Copyright (C) 1999-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Schwab <schwab@suse.de> and
   5                   Jakub Jelinek <jj@ultra.linux.cz>
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21
  22 /* We need to define a special parser for /proc/cpuinfo.  */
  23 #define GET_NPROCS_PARSER(FD, BUFFER, CP, RE, BUFFER_END, RESULT)         \
  24   do                                                                      \
  25     {                                                                     \
  26       (RESULT) = 0;                                                       \
  27       /* Find the line that contains the information about the number of  \
  28          active cpus.  We don't have to fear extremely long lines since   \
  29          the kernel will not generate them.  8192 bytes are really        \
  30          enough.  */                                                      \
  31       char *l;                                                            \
  32       while ((l = next_line (FD, BUFFER, &CP, &RE, BUFFER_END)) != NULL)  \
  33         if (sscanf (l, "ncpus active : %d", &(RESULT)) == 1)              \
  34           break;                                                          \
  35     }                                                                     \
  36   while (0)
  37
  38
  39 /* On the Sparc we can distinguish between the number of configured and
  40    active cpus.  */
  41 #define GET_NPROCS_CONF_PARSER(FP, BUFFER, RESULT)                       \
  42   do                                                                     \
  43     {                                                                    \
  44       (RESULT) = 0;                                                      \
  45       /* Find the line that contains the information about the number of \
  46          probed cpus.  We don't have to fear extremely long lines since  \
  47          the kernel will not generate them.  8192 bytes are really       \
  48          enough.  */                                                     \
  49       while (__fgets_unlocked ((BUFFER), sizeof (BUFFER), (FP)) != NULL) \
  50         if (sscanf (buffer, "ncpus probed : %d", &(RESULT)) == 1)        \
  51           break;                                                         \
  52     }                                                                    \
  53   while (0)
  54
  55 #include <sysdeps/unix/sysv/linux/getsysstats.c>