pintos/src/examples/recursor.c

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#include <stdio.h>
//3103089881171710
#include <stdlib.h>
#include <syscall.h>

int
main (int argc, char *argv[])
{
  char buffer[128];
  pid_t pid;
  int retval = 0;

  if (argc != 4) 
    {
      printf ("usage: recursor <string> <depth> <waitp>\n");
      exit (1);
    }

  /* Print args. */
  printf ("%s %s %s %s\n", argv[0], argv[1], argv[2], argv[3]);

  /* Execute child and wait for it to finish if requested. */
  if (atoi (argv[2]) != 0) 
    {
      snprintf (buffer, sizeof buffer,
                "recursor %s %d %s", argv[1], atoi (argv[2]) - 1, argv[3]);
      pid = exec (buffer);
      if (atoi (argv[3]))
        retval = wait (pid);
    }
  
  /* Done. */
  printf ("%s %s: dying, retval=%d\n", argv[1], argv[2], retval);
  exit (retval);
}

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