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https://github.com/zephyrproject-rtos/zephyr
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8658e3fe79
select() is a rather peculiar construct, defining/depending on many types and symbols. Making that to coexist with POSIX subsystem is an ongoing challange. To facilitate that, let's split those definitions to a separate header (which e.g. can be included without including all the rest of socket defines). Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*
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* Copyright (c) 2019 Linaro Limited
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_INCLUDE_NET_SOCKET_SELECT_H_
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#define ZEPHYR_INCLUDE_NET_SOCKET_SELECT_H_
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#include <zephyr/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct zsock_timeval {
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/* Using longs, as many (?) implementations seem to use it. */
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long tv_sec;
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long tv_usec;
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};
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typedef struct zsock_fd_set {
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u32_t bitset[(CONFIG_POSIX_MAX_FDS + 31) / 32];
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} zsock_fd_set;
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/* select() API is inefficient, and implemented as inefficient wrapper on
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* top of poll(). Avoid select(), use poll directly().
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*/
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int zsock_select(int nfds, zsock_fd_set *readfds, zsock_fd_set *writefds,
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zsock_fd_set *exceptfds, struct zsock_timeval *timeout);
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#define ZSOCK_FD_SETSIZE (sizeof(((zsock_fd_set *)0)->bitset) * 8)
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void ZSOCK_FD_ZERO(zsock_fd_set *set);
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int ZSOCK_FD_ISSET(int fd, zsock_fd_set *set);
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void ZSOCK_FD_CLR(int fd, zsock_fd_set *set);
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void ZSOCK_FD_SET(int fd, zsock_fd_set *set);
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#ifdef CONFIG_NET_SOCKETS_POSIX_NAMES
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#define fd_set zsock_fd_set
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#define timeval zsock_timeval
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#define FD_SETSIZE ZSOCK_FD_SETSIZE
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static inline int select(int nfds, zsock_fd_set *readfds,
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zsock_fd_set *writefds, zsock_fd_set *exceptfds,
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struct timeval *timeout)
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{
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return zsock_select(nfds, readfds, writefds, exceptfds, timeout);
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}
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static inline void FD_ZERO(zsock_fd_set *set)
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{
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ZSOCK_FD_ZERO(set);
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}
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static inline int FD_ISSET(int fd, zsock_fd_set *set)
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{
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return ZSOCK_FD_ISSET(fd, set);
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}
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static inline void FD_CLR(int fd, zsock_fd_set *set)
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{
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ZSOCK_FD_CLR(fd, set);
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}
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static inline void FD_SET(int fd, zsock_fd_set *set)
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{
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ZSOCK_FD_SET(fd, set);
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}
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#endif /* CONFIG_NET_SOCKETS_POSIX_NAMES */
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#ifdef __cplusplus
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}
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#endif
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#endif /* ZEPHYR_INCLUDE_NET_SOCKET_SELECT_H_ */
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