Nils O. Selåsdal
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
#ifndef IO_MUX_IMPL_H_
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#define IO_MUX_IMPL_H_
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#include "ucore/iomux.h"
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#include "ucore/timers.h"
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/** struct for IOMux implementations */
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struct IOMuxOps {
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/** Run one iteration of the mux.
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* The mux implementation must honor the timeout, if given.
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* The mux implementation must call iomux_timers_run after the
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* polling has occured (or if it's polling times out)
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*
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* @param mux The IOMux instance
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* @param timeout absolute time of a timeout - after which timers should run.
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* If timeout is NULL, no timeout should be set on the poll.
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*/
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int (*run_impl)(struct IOMux *mux, struct timeval *timeout);
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/* Deallocate the instance specific part of the IOMux */
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void (*delete_impl)(struct IOMux *mux);
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/** Register an IOMuxFD for events*/
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int (*register_fd_impl)(struct IOMux *mux, struct IOMuxFD *fd);
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/** Unregister an IOMuxFD */
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int (*unregister_fd_impl)(struct IOMux *mux, struct IOMuxFD *fd);
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/** Update an IOMuxFD (due to its events ('what') has changed*/
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int (*update_events_impl)(struct IOMux *mux, struct IOMuxFD *fd);
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};
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struct IOMux {
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/* TImer instance - must be the 1. member*/
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struct UCTimers timers;
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/**
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* Clock used for driving timers, and
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* providing timeouts for the mux
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*/
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struct UCoreClock *uclock;
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struct IOMuxOps ops;
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/* Used by mux implementations to hold their own data/instance */
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void *instance;
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};
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//TODO - have iomux_xx_init embed struct IOMux and get rid of IOMux.instance
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//for better cache friendiness
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int iomux_select_init(struct IOMux *mux);
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int iomux_epoll_init(struct IOMux *mux);
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int iomux_timers_run(struct IOMux *mux);
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#endif
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