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

   1 /* Determine various system internal values, Linux/Alpha version.
   2    Copyright (C) 1999 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Schwab <schwab@suse.de>
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21
  22 /* We need to define a special parser for /proc/cpuinfo.  */
  23 #define GET_NPROCS_PARSER(FP, BUFFER, RESULT)                              \
  24   do                                                                       \
  25     {                                                                      \
  26       /* Find the line that contains the information about the number of   \
  27          active cpus.  We don't have to fear extremely long lines since    \
  28          the kernel will not generate them.  8192 bytes are really enough. \
  29          If there is no "CPUs ..." line then we are on a UP system.  */    \
  30       (RESULT) = 1;                                                        \
  31       while (fgets_unlocked (BUFFER, sizeof (BUFFER), FP) != NULL)         \
  32         if ((sscanf (BUFFER, "cpus active : %d", &(RESULT)) == 1)          \
  33             || (sscanf (BUFFER, "CPUs probed %*d active %d",               \
  34                         &(RESULT)) == 1))                                  \
  35           break;                                                           \
  36     }                                                                      \
  37   while (0)
  38
  39
  40 /* On the Alpha we can distinguish between the number of configured and
  41    active cpus.  */
  42 #define GET_NPROCS_CONF_PARSER(FP, BUFFER, RESULT)                         \
  43   do                                                                       \
  44     {                                                                      \
  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 enough. \
  48          If there is no "CPUs ..." line then we are on a UP system.  */    \
  49       (RESULT) = 1;                                                        \
  50       while (fgets_unlocked ((BUFFER), sizeof (BUFFER), (FP)) != NULL)     \
  51         if ((sscanf (buffer, "cpus detected : %d", &(RESULT)) == 1)        \
  52             || (sscanf (buffer, "CPUs probed %d", &(RESULT)) == 1))        \
  53           break;                                                           \
  54     }                                                                      \
  55   while (0)
  56
  57 #include <sysdeps/unix/sysv/linux/getsysstats.c>