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