compat-getcpu.h

   1 #ifndef _COMPAT_GETCPU_H
   2 #define _COMPAT_GETCPU_H
   3
   4 /*
   5  * compat-getcpu.h
   6  *
   7  * Copyright (c) 2015 Michael Jeanson <mjeanson@efficios.com>
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <config.h>
  25
  26 #if defined(HAVE_SCHED_GETCPU)
  27 #include <sched.h>
  28
  29 static inline
  30 int urcu_sched_getcpu(void)
  31 {
  32         return sched_getcpu();
  33 }
  34 #elif defined(HAVE_GETCPUID)
  35 #include <sys/processor.h>
  36
  37 static inline
  38 int urcu_sched_getcpu(void)
  39 {
  40         return (int) getcpuid();
  41 }
  42 #else
  43
  44 static inline
  45 int urcu_sched_getcpu(void)
  46 {
  47         return -1;
  48 }
  49 #endif
  50
  51 #endif /* _COMPAT_GETCPU_H */