src/psched.h

   1 /*
   2  * netsniff-ng - the packet sniffing beast
   3  * By Daniel Borkmann <daniel@netsniff-ng.org>
   4  * Copyright 2009, 2010 Daniel Borkmann.
   5  * Copyright 2010 Emmanuel Roullit.
   6  * Subject to the GPL, version 2.
   7  */
   8
   9 #ifndef PSCHED_H
  10 #define PSCHED_H
  11
  12 #include <unistd.h>
  13 #include <sched.h>
  14 #include <sys/resource.h>
  15
  16 extern int set_cpu_affinity(const char *str, int inverted);
  17 extern char *get_cpu_affinity(char *cpu_string, size_t len);
  18 extern int set_proc_prio(int prio);
  19 extern int set_sched_status(int policy, int priority);
  20
  21 static inline int get_default_sched_policy(void)
  22 {
  23         return SCHED_FIFO;
  24 }
  25
  26 static inline int get_default_sched_prio(void)
  27 {
  28         return sched_get_priority_max(get_default_sched_policy());
  29 }
  30
  31 static inline int get_number_cpus(void)
  32 {
  33         return sysconf(_SC_NPROCESSORS_CONF);
  34 }
  35
  36 static inline int get_number_cpus_online(void)
  37 {
  38         return sysconf(_SC_NPROCESSORS_ONLN);
  39 }
  40
  41 static inline int get_default_proc_prio(void)
  42 {
  43         return -20;
  44 }
  45
  46 #endif /* PSCHED_H */