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

/* Determine various system internal values, Linux/Sparc version.
   Copyright (C) 1999-2020 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Schwab <schwab@suse.de> and
		  Jakub Jelinek <jj@ultra.linux.cz>

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <https://www.gnu.org/licenses/>.  */


/* We need to define a special parser for /proc/cpuinfo.  */
#define GET_NPROCS_PARSER(FD, BUFFER, CP, RE, BUFFER_END, RESULT)	  \
  do									  \
    {									  \
      (RESULT) = 0;							  \
      /* Find the line that contains the information about the number of  \
	 active cpus.  We don't have to fear extremely long lines since	  \
	 the kernel will not generate them.  8192 bytes are really	  \
	 enough.  */							  \
      char *l;								  \
      while ((l = next_line (FD, BUFFER, &CP, &RE, BUFFER_END)) != NULL)  \
	if (sscanf (l, "ncpus active : %d", &(RESULT)) == 1)		  \
	  break;							  \
    }									  \
  while (0)


/* On the Sparc we can distinguish between the number of configured and
   active cpus.  */
#define GET_NPROCS_CONF_PARSER(FP, BUFFER, RESULT)			 \
  do									 \
    {									 \
      (RESULT) = 0;							 \
      /* Find the line that contains the information about the number of \
	 probed cpus.  We don't have to fear extremely long lines since	 \
	 the kernel will not generate them.  8192 bytes are really	 \
	 enough.  */							 \
      while (__fgets_unlocked ((BUFFER), sizeof (BUFFER), (FP)) != NULL) \
	if (sscanf (buffer, "ncpus probed : %d", &(RESULT)) == 1)	 \
	  break;							 \
    }									 \
  while (0)

#include <sysdeps/unix/sysv/linux/getsysstats.c>