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#ifndef _SYS_WAIT_H_
#define _SYS_WAIT_H_
#include <ansi_compat.h>
#include <sys/cdefs.h>
#if !defined(_POSIX_SOURCE)
union wait {
#else
union __wait {
#endif /* !defined(_POSIX_SOURCE) */
#ifdef __vax
int w_status; /* used in syscall */
#endif /* __vax */
#ifdef __mips__
unsigned int w_status; /* used in syscall */
#endif /* __mips */
/*
* Terminated process status.
*/
struct {
#ifdef __vax
unsigned short w_Termsig:7; /* termination signal */
unsigned short w_Coredump:1; /* core dump indicator */
unsigned short w_Retcode:8; /* exit code if w_termsig==0 */
#endif /* __vax */
#ifdef __mips__
#ifdef __MIPSEL__
unsigned int w_Termsig:7; /* termination signal */
unsigned int w_Coredump:1; /* core dump indicator */
unsigned int w_Retcode:8; /* exit code if w_termsig==0 */
unsigned int w_Filler:16; /* pad to word boundary */
#endif /* __MIPSEL */
#ifdef __MIPSEB__
unsigned int w_Filler:16; /* pad to word boundary */
unsigned int w_Retcode:8; /* exit code if w_termsig==0 */
unsigned int w_Coredump:1; /* core dump indicator */
unsigned int w_Termsig:7; /* termination signal */
#endif /* __MIPSEB */
#endif /* __mips */
} w_T;
/*
* Stopped process status. Returned
* only for traced children unless requested
* with the WUNTRACED option bit.
*/
struct {
#ifdef __vax
unsigned short w_Stopval:8; /* == W_STOPPED if stopped */
unsigned short w_Stopsig:8; /* signal that stopped us */
#endif /* __vax */
#ifdef __mips__
#ifdef __MIPSEL__
unsigned int w_Stopval:8; /* == W_STOPPED if stopped */
unsigned int w_Stopsig:8; /* signal that stopped us */
unsigned int w_Filler:16; /* pad to word boundary */
#endif /* __MIPSEL */
#ifdef __MIPSEB__
unsigned int w_Filler:16; /* pad to word boundary */
unsigned int w_Stopsig:8; /* signal that stopped us */
unsigned int w_Stopval:8; /* == W_STOPPED if stopped */
#endif /* __MIPSEB */
#endif /* __mips */
} w_S;
};
#if !defined(_POSIX_SOURCE)
#define w_termsig w_T.w_Termsig
#define w_coredump w_T.w_Coredump
#define w_retcode w_T.w_Retcode
#define w_stopval w_S.w_Stopval
#define w_stopsig w_S.w_Stopsig
#define WSTOPPED 0177 /* value of s.stopval if process is stopped */
#endif /* !defined(_POSIX_SOURCE) */
#ifdef WSTOPPED
#define _WSTOPPED WSTOPPED
#else
#define _WSTOPPED 0177
#endif
/*
* Option bits for the second argument of wait3. WNOHANG causes the
* wait to not hang if there are no stopped or terminated processes, rather
* returning an error indication in this case (pid==0). WUNTRACED
* indicates that the caller should receive status about untraced children
* which stop due to signals. If children are stopped and a wait without
* this option is done, it is as though they were still running... nothing
* about them is returned.
*/
#define WNOHANG 1 /* dont hang in wait */
#define WUNTRACED 2 /* tell about stopped, untraced children */
/*
* Must cast as union wait * because POSIX defines the input to these macros
* as int.
*/
#ifdef _POSIX_SOURCE
#define WIFSTOPPED(x) (((union __wait *)&(x))->w_S.w_Stopval == _WSTOPPED)
#define WIFSIGNALED(x) (((union __wait *)&(x))->w_S.w_Stopval != _WSTOPPED && ((union __wait *)&(x))->w_T.w_Termsig != 0)
#define WIFEXITED(x) (((union __wait *)&(x))->w_S.w_Stopval != _WSTOPPED && ((union __wait *)&(x))->w_T.w_Termsig == 0)
#define WEXITSTATUS(x) (((union __wait *)&(x))->w_T.w_Retcode)
#define WTERMSIG(x) (((union __wait *)&(x))->w_T.w_Termsig)
#define WSTOPSIG(x) (((union __wait *)&(x))->w_S.w_Stopsig)
#endif /* _POSIX_SOURCE */
#if !defined(_POSIX_SOURCE)
#define WIFSTOPPED(x) (((union wait *)&(x))->w_stopval == WSTOPPED)
#define WIFSIGNALED(x) (((union wait *)&(x))->w_stopval != WSTOPPED && ((union wait *)&(x))->w_termsig != 0)
#define WIFEXITED(x) (((union wait *)&(x))->w_stopval != WSTOPPED && ((union wait *)&(x))->w_termsig == 0)
#define WEXITSTATUS(x) (((union wait *)&(x))->w_retcode)
#define WTERMSIG(x) (((union wait *)&(x))->w_termsig)
#define WSTOPSIG(x) (((union wait *)&(x))->w_stopsig)
#endif /* !defined(_POSIX_SOURCE) */
pid_t wait __P_((int *));
pid_t waitpid __P_((pid_t, int *, int));
#endif /* _SYS_WAIT_H_ */
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