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/*

@deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)

This is a wrapper around the @code{wait} function.  Any ``special''

values of @var{pid} depend on your implementation of @code{wait}, as

does the return value.  The third argument is unused in @libib{}.

@end deftypefn

*/

#ifdef HAVE_CONFIG_H

#include "config.h"

#endif

#include "ansidecl.h"

/* On some systems (such as WindISS), you must include <sys/types.h>

   to get the definition of "pid_t" before you include <sys/wait.h>.  */

#include <sys/types.h>

#ifdef HAVE_SYS_WAIT_H

#include <sys/wait.h>

#endif

pid_t

waitpid (pid_t pid, int *stat_loc, int options ATTRIBUTE_UNUSED)

{

  for (;;)

    {

      int wpid = wait(stat_loc);

      if (wpid == pid || wpid == -1)

        return wpid;

    }

}