| 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 |
| 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 | } |