/*
 * Copyright 2004-2011, Haiku, Inc. All Rights Reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef _SYS_WAIT_H
#define _SYS_WAIT_H


#include <features.h>
#include <sys/types.h>
#include <signal.h>


/* waitpid()/waitid() options */
#define WNOHANG         0x01
#define WUNTRACED       0x02
#define WCONTINUED      0x04
#define WEXITED         0x08
#define WSTOPPED        0x10
#define WNOWAIT         0x20

/* macros to interprete wait()/waitpid() status */
#define WIFEXITED(value)        (((value) & ~0xff) == 0)
#define WEXITSTATUS(value)      ((value) & 0xff)
#define WIFSIGNALED(value)      ((((value) >> 8) & 0xff) != 0)
#define WTERMSIG(value)         (((value) >> 8) & 0xff)
#define WIFSTOPPED(value)       ((((value) >> 16) & 0xff) != 0)
#define WSTOPSIG(value)         (((value) >> 16) & 0xff)
#define WCOREDUMP(value)        ((value) & 0x10000)
#define WIFCONTINUED(value)     ((value) & 0x20000)

#ifdef _DEFAULT_SOURCE
/* non-standard macro for backwards compatibility */
#define WIFCORED(value)         WCOREDUMP(value)
#endif

/* ID types for waitid() */
typedef enum {
        P_ALL,          /* wait for any children, ignore ID */
        P_PID,          /* wait for the child whose process ID matches */
        P_PGID          /* wait for any child whose process group ID matches */
} idtype_t;


#ifdef __cplusplus
extern "C" {
#endif

extern pid_t wait(int *_status);
extern pid_t waitpid(pid_t pid, int *_status, int options);
extern int waitid(idtype_t idType, id_t id, siginfo_t *info, int options);

#ifdef __cplusplus
}
#endif

#endif  /* _SYS_WAIT_H */