1/*
2
3@deftypefn Supplemental int waitpid (int @var{pid}, int *@var{status}, int)
4
5This is a wrapper around the @code{wait} function.  Any ``special''
6values of @var{pid} depend on your implementation of @code{wait}, as
7does 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#ifdef __MINGW32__
27#include <process.h>
28#define wait(s)  _cwait(s,pid,_WAIT_CHILD)
29#endif
30
31pid_t
32waitpid (pid_t pid, int *stat_loc, int options ATTRIBUTE_UNUSED)
33{
34  for (;;)
35    {
36      int wpid = wait(stat_loc);
37      if (wpid == pid || wpid == -1)
38	return wpid;
39    }
40}
41