waitpid.c revision 89857 
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#ifdef HAVE_SYS_WAIT_H
17#include <sys/wait.h>
18#endif
19
20int
21waitpid (pid, stat_loc, options)
22	int pid, *stat_loc, options;
23{
24  for (;;)
25    {
26      int wpid = wait(stat_loc);
27      if (wpid == pid || wpid == -1)
28	return wpid;
29    }
30}
31