205ab68ff9
ev_eloop_run() runs the eloop for a given fixed time. If the dispatcher returns and the timeout isn't reached, then the dispatcher is called again. This also adds the *_exit() function which allows to exit the main-loop and can be called from anywhere (including the callbacks). Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* Event Loop
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*
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* Copyright (c) 2011-2012 David Herrmann <dh.herrmann@googlemail.com>
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* Copyright (c) 2011 University of Tuebingen
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Event Loop
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* This provides a basic event loop similar to those provided by glib etc.
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* It uses linux specific features like signalfd so it may not be easy to port
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* it to other platforms.
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*/
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#ifndef EV_ELOOP_H
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#define EV_ELOOP_H
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#include <inttypes.h>
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#include <stdlib.h>
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#include <time.h>
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struct ev_eloop;
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struct ev_idle;
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struct ev_fd;
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struct ev_signal;
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struct ev_timer;
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typedef void (*ev_idle_cb) (struct ev_idle *idle, void *data);
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typedef void (*ev_fd_cb) (struct ev_fd *fd, int mask, void *data);
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typedef void (*ev_signal_cb)
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(struct ev_signal *sig, int signum, void *data);
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typedef void (*ev_timer_cb)
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(struct ev_timer *timer, uint64_t num, void *data);
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enum ev_eloop_flags {
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EV_READABLE = 0x01,
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EV_WRITEABLE = 0x02,
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EV_HUP = 0x04,
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EV_ERR = 0x08,
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};
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int ev_eloop_new(struct ev_eloop **out);
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void ev_eloop_ref(struct ev_eloop *loop);
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void ev_eloop_unref(struct ev_eloop *loop);
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int ev_eloop_dispatch(struct ev_eloop *loop, int timeout);
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int ev_eloop_run(struct ev_eloop *loop, int timeout);
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void ev_eloop_exit(struct ev_eloop *loop);
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/* eloop sources */
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int ev_eloop_new_eloop(struct ev_eloop *loop, struct ev_eloop **out);
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int ev_eloop_add_eloop(struct ev_eloop *loop, struct ev_eloop *add);
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void ev_eloop_rm_eloop(struct ev_eloop *rm);
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/* idle sources */
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int ev_idle_new(struct ev_idle **out);
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void ev_idle_ref(struct ev_idle *idle);
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void ev_idle_unref(struct ev_idle *idle);
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int ev_eloop_new_idle(struct ev_eloop *loop, struct ev_idle **out,
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ev_idle_cb cb, void *data);
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int ev_eloop_add_idle(struct ev_eloop *loop, struct ev_idle *idle,
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ev_idle_cb cb, void *data);
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void ev_eloop_rm_idle(struct ev_idle *idle);
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/* fd sources */
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int ev_fd_new(struct ev_fd **out);
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void ev_fd_ref(struct ev_fd *fd);
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void ev_fd_unref(struct ev_fd *fd);
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int ev_eloop_new_fd(struct ev_eloop *loop, struct ev_fd **out, int rfd,
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int mask, ev_fd_cb cb, void *data);
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int ev_eloop_add_fd(struct ev_eloop *loop, struct ev_fd *fd, int rfd,
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int mask, ev_fd_cb cb, void *data);
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void ev_eloop_rm_fd(struct ev_fd *fd);
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int ev_eloop_update_fd(struct ev_fd *fd, int mask);
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/* signal sources */
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int ev_signal_new(struct ev_signal **out);
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void ev_signal_ref(struct ev_signal *sig);
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void ev_signal_unref(struct ev_signal *sig);
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int ev_eloop_new_signal(struct ev_eloop *loop, struct ev_signal **out,
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int signum, ev_signal_cb cb, void *data);
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int ev_eloop_add_signal(struct ev_eloop *loop, struct ev_signal *sig,
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int signum, ev_signal_cb cb, void *data);
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void ev_eloop_rm_signal(struct ev_signal *sig);
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/* timer sources */
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int ev_timer_new(struct ev_timer **out);
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void ev_timer_ref(struct ev_timer *timer);
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void ev_timer_unref(struct ev_timer *timer);
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int ev_eloop_new_timer(struct ev_eloop *loop, struct ev_timer **out,
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const struct itimerspec *spec, ev_timer_cb cb,
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void *data);
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int ev_eloop_add_timer(struct ev_eloop *loop, struct ev_timer *timer,
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const struct itimerspec *spec, ev_timer_cb cb,
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void *data);
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void ev_eloop_rm_timer(struct ev_timer *timer);
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int ev_eloop_update_timer(struct ev_timer *timer,
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const struct itimerspec *spec);
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#endif /* EV_ELOOP_H */
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