mirror of https://gerrit.osmocom.org/libosmocore
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*! \file select.h
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* select loop abstraction.
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*/
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#pragma once
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#include <osmocom/core/linuxlist.h>
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#include <stdbool.h>
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/*! \defgroup select Select loop abstraction
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* @{
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* \file select.h */
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/*! Indicate interest in reading from the file descriptor */
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#define BSC_FD_READ 0x0001
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/*! Indicate interest in writing to the file descriptor */
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#define BSC_FD_WRITE 0x0002
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/*! Indicate interest in exceptions from the file descriptor */
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#define BSC_FD_EXCEPT 0x0004
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/*! Structure representing a file dsecriptor */
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struct osmo_fd {
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/*! linked list for internal management */
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struct llist_head list;
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/*! actual operating-system level file decriptor */
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int fd;
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/*! bit-mask or of \ref BSC_FD_READ, \ref BSC_FD_WRITE and/or
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* \ref BSC_FD_EXCEPT */
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unsigned int when;
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/*! call-back function to be called once file descriptor becomes
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* available */
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int (*cb)(struct osmo_fd *fd, unsigned int what);
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/*! data pointer passed through to call-back function */
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void *data;
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/*! private number, extending \a data */
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unsigned int priv_nr;
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};
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bool osmo_fd_is_registered(struct osmo_fd *fd);
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int osmo_fd_register(struct osmo_fd *fd);
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void osmo_fd_unregister(struct osmo_fd *fd);
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int osmo_select_main(int polling);
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struct osmo_fd *osmo_fd_get_by_fd(int fd);
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/*
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* foreign event loop integration
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*/
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int osmo_fd_fill_fds(void *readset, void *writeset, void *exceptset);
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int osmo_fd_disp_fds(void *readset, void *writeset, void *exceptset);
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/*! @} */
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