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glibc  2.9
sysconf.c
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00001 /* Get file-specific information about a file.  Linux version.
00002    Copyright (C) 2003, 2004 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <assert.h>
00021 #include <stdbool.h>
00022 #include <stdlib.h>
00023 #include <unistd.h>
00024 
00025 
00026 #include "has_cpuclock.c"
00027 
00028 static long int linux_sysconf (int name);
00029 
00030 
00031 /* Get the value of the system variable NAME.  */
00032 long int
00033 __sysconf (int name)
00034 {
00035   if (name == _SC_CPUTIME || name == _SC_THREAD_CPUTIME)
00036     return has_cpuclock () ? 200112L : -1;
00037 
00038   /* Everything else is handled by the more general code.  */
00039   return linux_sysconf (name);
00040 }
00041 
00042 /* Now the generic Linux version.  */
00043 #undef __sysconf
00044 #define __sysconf static linux_sysconf
00045 #include "../sysconf.c"