#ifndef _LIBC_SYS_WAIT_H
#define _LIBC_SYS_WAIT_H

#pragma once

#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

/* POSIX status decoding. waitpid() encodes a normal exit as code<<8
   and a killed/crashed child as the signal number in the low bits. */
#define WIFEXITED(s)    (((s) & 0x7F) == 0)
#define WEXITSTATUS(s)  (((s) >> 8) & 0xFF)
#define WIFSIGNALED(s)  (((s) & 0x7F) != 0)
#define WTERMSIG(s)     ((s) & 0x7F)
#define WIFSTOPPED(s)   (0)
#define WSTOPSIG(s)     (0)

#define WNOHANG   1
#define WUNTRACED 2

pid_t wait(int *status);
pid_t waitpid(pid_t pid, int *status, int options);

#ifdef __cplusplus
}
#endif

#endif /* _LIBC_SYS_WAIT_H */