1 /*
2 
3 @deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
4 
5 This is a wrapper around the @code{wait} function.  Any ``special''
6 values of @var{pid} depend on your implementation of @code{wait}, as
7 does the return value.  The third argument is unused in @libib{}.
8 
9 @end deftypefn
10 
11 */
12 
13 #ifdef HAVE_CONFIG_H
14 #include "config.h"
15 #endif
16 #include "ansidecl.h"
17 
18 /* On some systems (such as WindISS), you must include <sys/types.h>
19    to get the definition of "pid_t" before you include <sys/wait.h>.  */
20 #include <sys/types.h>
21 
22 #ifdef HAVE_SYS_WAIT_H
23 #include <sys/wait.h>
24 #endif
25 
26 pid_t
waitpid(pid_t pid,int * stat_loc,int options ATTRIBUTE_UNUSED)27 waitpid (pid_t pid, int *stat_loc, int options ATTRIBUTE_UNUSED)
28 {
29   for (;;)
30     {
31       int wpid = wait(stat_loc);
32       if (wpid == pid || wpid == -1)
33 	return wpid;
34     }
35 }
36