UNIX 7th Ed. - /usr/src/libF77/s_paus.c

   1: #include <stdio.h>
   2: #define PAUSESIG 15
   3: 
   4: 
   5: s_paus(s, n)
   6: char *s;
   7: long int n;
   8: {
   9: int i;
  10: int waitpause();
  11: 
  12: fprintf(stderr, "PAUSE ");
  13: if(n > 0)
  14:     for(i = 0; i<n ; ++i)
  15:         putc(*s++, stderr);
  16: fprintf(stderr, " statement executed\n");
  17: if( isatty(fileno(stdin)) )
  18:     {
  19:     fprintf(stderr, "To resume execution, type go.  Any other input will terminate job.\n");
  20:     if( getchar()!='g' || getchar()!='o' || getchar()!='\n' )
  21:         {
  22:         fprintf(stderr, "STOP\n");
  23:         f_exit();
  24:         exit(0);
  25:         }
  26:     }
  27: else
  28:     {
  29:     fprintf(stderr, "To resume execution, execute a   kill -%d %d   command\n",
  30:         PAUSESIG, getpid() );
  31:     signal(PAUSESIG, waitpause);
  32:     pause();
  33:     }
  34: fprintf(stderr, "Execution resumes after PAUSE.\n");
  35: }
  36: 
  37: 
  38: 
  39: 
  40: 
  41: static waitpause()
  42: {
  43: return;
  44: }

Defined functions

Defined macros