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/*
* Copyright (c) 2006-2021, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2021-09-11 Meco Man First version
* 2024-03-29 TroyMitchelle Add all macro comments and comments to structure members
*/
#ifndef __POLL_H__
#define __POLL_H__
#ifdef __cplusplus
extern "C" {
#endif
#ifdef RT_USING_MUSLLIBC
#if !defined(POLLIN) && !defined(POLLOUT)
#define POLLIN 0x001 /**< There is data to read. */
#define POLLPRI 0x002 /**< There is urgent data to read. */
#define POLLOUT 0x004 /**< Writing is now possible. */
#define POLLERR 0x008 /**< Error condition. */
#define POLLHUP 0x010 /**< Hang up. */
#define POLLNVAL 0x020 /**< Invalid polling request. */
#define POLLRDNORM 0x040 /**< Normal data may be read. */
#define POLLRDBAND 0x080 /**< Priority data may be read. */
#define POLLWRNORM 0x100 /**< Writing normal data is possible. */
#define POLLWRBAND 0x200 /**< Writing priority data is possible. */
typedef unsigned int nfds_t;
struct pollfd
{
int fd; /**< File descriptor. */
short events; /**< Requested events. */
short revents; /**< Returned events. */
};
#endif
#else
#if !defined(POLLIN) && !defined(POLLOUT)
#define POLLIN 0x1 /**< There is data to read. */
#define POLLOUT 0x2 /**< Writing is now possible. */
#define POLLERR 0x4 /**< Error condition. */
#define POLLNVAL 0x8 /**< Invalid polling request. */
/* Below values are unimplemented */
#define POLLRDNORM 0x10 /**< Normal data may be read. */
#define POLLRDBAND 0x20 /**< Priority data may be read. */
#define POLLPRI 0x40 /**< There is urgent data to read. */
#define POLLWRNORM 0x80 /**< Writing normal data is possible. */
#define POLLWRBAND 0x100 /**< Writing priority data is possible. */
#define POLLHUP 0x200 /**< Hang up. */
typedef unsigned int nfds_t;
struct pollfd
{
int fd; /**< File descriptor. */
short events; /**< Requested events. */
short revents; /**< Returned events. */
};
#endif
#endif /* !defined(POLLIN) && !defined(POLLOUT) */
#define POLLMASK_DEFAULT (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
int poll(struct pollfd *fds, nfds_t nfds, int timeout);
#ifdef __cplusplus
}
#endif
#endif /* __POLL_H__ */
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