diff options
Diffstat (limited to 'posix/sys')
| -rw-r--r-- | posix/sys/wait.h | 44 |
1 files changed, 22 insertions, 22 deletions
diff --git a/posix/sys/wait.h b/posix/sys/wait.h index cccbcb8931..81b0eb429d 100644 --- a/posix/sys/wait.h +++ b/posix/sys/wait.h @@ -34,61 +34,61 @@ typedef __pid_t pid_t; # define __pid_t_defined #endif +/* These macros could also be defined int <stdlib.h>. */ +#ifndef _STDLIB_H /* This will define the `W*' macros for the flag bits to `waitpid', `wait3', and `wait4'. */ -#include <bits/waitflags.h> +# include <bits/waitflags.h> -#ifdef __USE_BSD +# ifdef __USE_BSD /* Lots of hair to allow traditional BSD use of `union wait' as well as POSIX.1 use of `int' for the status word. */ -# if defined __GNUC__ && !defined __cplusplus -# define __WAIT_INT(status) \ +# if defined __GNUC__ && !defined __cplusplus +# define __WAIT_INT(status) \ (__extension__ ({ union { __typeof(status) __in; int __i; } __u; \ __u.__in = (status); __u.__i; })) -# else -# define __WAIT_INT(status) (*(int *) &(status)) -# endif +# else +# define __WAIT_INT(status) (*(int *) &(status)) +# endif /* This is the type of the argument to `wait'. The funky union causes redeclarations with ether `int *' or `union wait *' to be allowed without complaint. __WAIT_STATUS_DEFN is the type used in the actual function definitions. */ -# if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus -# define __WAIT_STATUS void * -# define __WAIT_STATUS_DEFN void * -# else +# if !defined __GNUC__ || __GNUC__ < 2 || defined __cplusplus +# define __WAIT_STATUS void * +# define __WAIT_STATUS_DEFN void * +# else /* This works in GCC 2.6.1 and later. */ typedef union { union wait *__uptr; int *__iptr; } __WAIT_STATUS __attribute__ ((__transparent_union__)); -# define __WAIT_STATUS_DEFN int * -# endif +# define __WAIT_STATUS_DEFN int * +# endif -#else /* Don't use BSD. */ +# else /* Don't use BSD. */ -# define __WAIT_INT(status) (status) -# define __WAIT_STATUS int * -# define __WAIT_STATUS_DEFN int * +# define __WAIT_INT(status) (status) +# define __WAIT_STATUS int * +# define __WAIT_STATUS_DEFN int * -#endif /* Use BSD. */ +# endif /* Use BSD. */ /* This will define all the `__W*' macros. */ -#include <bits/waitstatus.h> +# include <bits/waitstatus.h> -/* These macros could also be defined int <stdlib.h>. */ -#ifndef WEXITSTATUS # define WEXITSTATUS(status) __WEXITSTATUS(__WAIT_INT(status)) # define WTERMSIG(status) __WTERMSIG(__WAIT_INT(status)) # define WSTOPSIG(status) __WSTOPSIG(__WAIT_INT(status)) # define WIFEXITED(status) __WIFEXITED(__WAIT_INT(status)) # define WIFSIGNALED(status) __WIFSIGNALED(__WAIT_INT(status)) # define WIFSTOPPED(status) __WIFSTOPPED(__WAIT_INT(status)) -#endif +#endif /* <stdlib.h> not included. */ #ifdef __USE_BSD # define WCOREFLAG __WCOREFLAG |