include/sys/signal.h

   1 #ifndef _SPL_SIGNAL_H
   2 #define _SPL_SIGNAL_H
   3
   4 #define FORREAL         0       /* Usual side-effects */
   5 #define JUSTLOOKING     1       /* Don't stop the process */
   6
   7 /* The "why" argument indicates the allowable side-effects of the call:
   8  *
   9  * FORREAL:  Extract the next pending signal from p_sig into p_cursig;
  10  * stop the process if a stop has been requested or if a traced signal
  11  * is pending.
  12  *
  13  * JUSTLOOKING:  Don't stop the process, just indicate whether or not
  14  * a signal might be pending (FORREAL is needed to tell for sure).
  15  */
  16 static __inline__ int
  17 issig(int why)
  18 {
  19         BUG_ON(!(why == FORREAL || why == JUSTLOOKING));
  20
  21         return signal_pending(current);
  22 }
  23
  24 #endif /* SPL_SIGNAL_H */