mirror of
https://github.com/troglobit/libuev.git
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Joachim Nilsson
1f9558059a
There really does not exist a good reason for us sending a `uev_ctx_t *` pointer as the first argument to event callbacks. If the callback needs to reference the context, it can find the ctx pointer in the `uev_t *w`. This patch removes the first argument from all callbacks and also fixes a slight bug in that the event loop never returned the actual event that triggered the callback! Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/* libuEv - Micro event loop library
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*
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* Copyright (c) 2012 Flemming Madsen <flemming!madsen()madsensoft!dk>
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* Copyright (c) 2013-2015 Joachim Nilsson <troglobit()gmail!com>
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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 (the
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* "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
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* included 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,
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* EXPRESS 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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#ifndef LIBUEV_UEV_H_
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#define LIBUEV_UEV_H_
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#include <stdio.h>
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#include <sys/epoll.h>
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#include "queue.h" /* OpenBSD queue.h > old GLIBC version */
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/* Max. number of simulateneous events */
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#define UEV_MAX_EVENTS 10
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/* I/O events, for signals and timers revents will always be UEV_READ */
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#define UEV_NONE 0
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#define UEV_READ EPOLLIN
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#define UEV_WRITE EPOLLOUT
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#define UEV_EVENT_MASK (UEV_READ | UEV_WRITE)
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/* Run flags */
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#define UEV_ONCE 1
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#define UEV_NONBLOCK 2
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/* I/O, timer, or signal watcher */
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typedef enum {
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UEV_IO_TYPE = 1,
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UEV_TIMER_TYPE,
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UEV_SIGNAL_TYPE,
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} uev_type_t;
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/* Forward declare due to dependencys, don't try this at home kids. */
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struct uev;
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/* Main libuEv context type */
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typedef struct {
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int running;
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int fd; /* For epoll() */
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uint32_t errors;
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LIST_HEAD(,uev) watchers;
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} uev_ctx_t;
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/* I/O event watcher */
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typedef struct uev {
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LIST_ENTRY(uev) link; /* For queue.h linked list */
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/* Common to all watchers */
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uev_ctx_t *ctx;
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uev_type_t type;
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int active;
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int fd;
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int events;
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/* Watcher callback with optional argument */
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void (*cb)(struct uev *, void *, int);
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void *arg;
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/* Timer watchers, time in milliseconds */
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int timeout;
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int period;
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/* Signal watchers */
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int signo;
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} uev_t;
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/* Generic callback for watchers */
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typedef void (uev_cb_t)(uev_t *w, void *arg, int events);
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/* Private methods, do not use directly! */
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int uev_watcher_init (uev_ctx_t *ctx, uev_t *w, uev_type_t type, uev_cb_t *cb, void *arg, int fd, int events);
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int uev_watcher_start (uev_t *w);
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int uev_watcher_stop (uev_t *w);
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/* Public interface */
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int uev_init (uev_ctx_t *ctx);
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int uev_exit (uev_ctx_t *ctx);
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int uev_run (uev_ctx_t *ctx, int flags);
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int uev_io_init (uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int fd, int events);
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int uev_io_set (uev_t *w, int fd, int events);
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int uev_io_start (uev_t *w);
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int uev_io_stop (uev_t *w);
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int uev_timer_init (uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int timeout, int period);
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int uev_timer_set (uev_t *w, int timeout, int period);
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int uev_timer_start (uev_t *w);
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int uev_timer_stop (uev_t *w);
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int uev_signal_init (uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, int signo);
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int uev_signal_set (uev_t *w, int signo);
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int uev_signal_start (uev_t *w);
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int uev_signal_stop (uev_t *w);
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#endif /* LIBUEV_UEV_H_ */
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/**
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* Local Variables:
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* version-control: t
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* indent-tabs-mode: t
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* c-file-style: "linux"
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* End:
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*/
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