diplodocus.org Git - nmh/blob - h/signals.h

   1
   2 /*
   3  * signals.h -- header file for nmh signal interface
   4  */
   5
   6 #include <config.h>
   7
   8 /*
   9  * The type for a signal handler
  10  */
  11 typedef RETSIGTYPE (*SIGNAL_HANDLER)(int);
  12
  13 /*
  14  * If not a POSIX machine, then we create our
  15  * own POSIX style signal sets functions. This
  16  * currently assumes you have 31 signals, which
  17  * should be true on most pure BSD machines.
  18  */
  19 #ifndef POSIX_SIGNALS
  20 # define sigemptyset(s)    (*(s) = 0)
  21 # define sigfillset(s)     (*(s) = ~((sigset_t) 0), 0)
  22 # define sigaddset(s,n)    (*(s) |=  (1 << ((n) - 1)), 0)
  23 # define sigdelset(s,n)    (*(s) &= ~(1 << ((n) - 1)), 0)
  24 # define sigismember(s,n)  ((*(s) & (1 << ((n) - 1))) != 0)
  25 #endif
  26
  27 /*
  28  * prototypes
  29  */
  30 int SIGPROCMASK (int, const sigset_t *, sigset_t *);
  31 SIGNAL_HANDLER SIGNAL (int, SIGNAL_HANDLER);
  32 SIGNAL_HANDLER SIGNAL2 (int, SIGNAL_HANDLER);