usr/src/lib/libshell/common/features/sigfeatures

   1 lib     sigblock,sigrelse,sigsetmask,sigprocmask,sigvec
   2 typ     sigset_t        ast.h signal.h
   3 mem     sigvec.sv_mask  signal.h
   4 cat{
   5         #ifndef _mem_sigvec_sv_mask
   6         #   undef _lib_sigvec
   7         #endif
   8         #ifdef _lib_sigprocmask
   9         #    define sh_sigaction(s,action) do { sigset_t ss;\
  10                                 sigemptyset(&ss); \
  11                                 if(s) sigaddset(&ss,(s)); \
  12                                 sigprocmask(action,&ss,0); \
  13                                 }while(0)
  14         #    define sigrelease(s)       sh_sigaction(s,SIG_UNBLOCK)
  15         #    define sigblock(s)         sh_sigaction(s,SIG_BLOCK)
  16         #    define sig_begin()         sh_sigaction(0,SIG_SETMASK)
  17         #else
  18         #   ifndef _lib_sigblock
  19         #       define sigblock(s)
  20         #   endif
  21         #   ifdef _lib_sigsetmask
  22         #       define sigrelease(s)  sigsetmask(0)
  23         #       define sig_begin()    sigsetmask(0)
  24         #   else
  25         #       ifdef _lib_sigrelse
  26         #           define sigrelease   sigrelse
  27         #           define sig_begin()
  28         #       else
  29         #           define sig_begin()          (0)
  30         #           define sigrelease(s)        (0)
  31         #       endif /* _lib_sigrelse */
  32         #    endif /* _lib_sigsetmask */
  33         #endif /* _lib_sigprocmask */
  34 }end
  35 tst     output{
  36         #include <signal.h>
  37         int main()
  38         {
  39         #ifdef SIGRTMIN
  40                 printf("#undef  _SIGRTMIN\n");
  41                 printf("#define _SIGRTMIN       %d\n", SIGRTMIN);
  42         #endif
  43         #ifdef SIGRTMAX
  44                 printf("#undef  _SIGRTMAX\n");
  45                 printf("#define _SIGRTMAX       %d\n", SIGRTMAX);
  46         #endif
  47                 return 0;
  48         }
  49 }end