mirror of
https://github.com/troglobit/libuev.git
synced 2026-10-04 06:23:58 +07:00
Joachim Nilsson
ec9351bfdd
Refactor uev_timer_create() to support a periodic (msec) argument. For such timers libuev automaticlly respawns them. Effectively resetting the timeout using the period value. Also, refactor argument order to uev_timer_create() and uev_io_create(). Rename UEV_FHIN, UEV_FHOUT to UEV_DIR_INBOUND and UEV_DIR_OUTBOUND. Remove unnecessary return value for watcher callbacks. What would those have been usefu for, ever? Not even the original code checked the return value after calling a handler. Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
113 lines
3.9 KiB
C
113 lines
3.9 KiB
C
/* libuev - Asynchronous 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 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_H_
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#define LIBUEV_H_
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#include "queue.h"
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/* Elapsed time between two times() tick measurements in msec */
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#define TIME_DIFF_MSEC(now, then) \
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( (now - then) / clock_tick * 1000 + \
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((now - then) % clock_tick) * 1000 / clock_tick )
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/* Forward declare due to dependencys, don't try this at home. */
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struct uev;
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/* I/O direction */
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typedef enum {
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UEV_DIR_INBOUND = 0,
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UEV_DIR_OUTBOUND = 1
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} uev_dir_t;
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/* I/O event watcher */
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typedef struct uev_io {
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TAILQ_ENTRY(uev_io) link;
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TAILQ_ENTRY(uev_io) gc;
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int fd; ///< File descriptor
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uev_dir_t dir; ///< Direction: in or out
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int index; ///< Index in poll array
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void (*handler)(struct uev *, struct uev_io *, void *);
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void *data;
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} uev_io_t;
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/* Timer event watcher */
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typedef struct uev_timer {
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TAILQ_ENTRY(uev_timer) link;
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int timeout; ///< Timeout in milliseconds
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int period; ///< Period time, in milliseconds
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void (*handler)(struct uev *, struct uev_timer *, void *);
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void *data;
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} uev_timer_t;
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/* Main libuev context type */
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typedef struct {
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TAILQ_HEAD(, uev_io) io_list; ///< File handlers
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TAILQ_HEAD(, uev_timer) timer_list; ///< Timer handlers
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TAILQ_HEAD(, uev_io) io_delist; ///< List of file handles to be garbage collected
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TAILQ_HEAD(, uev_timer) timer_delist; ///< List of timer handles to be garbage collected
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clock_t base_time; ///< Time at last timer tick
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clock_t next_time; ///< Next timer tick epoch
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int use_next; ///< True if next timer epoch is set
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int exiting; ///< True if the application is terminating
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} uev_t;
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/* Callbacks for different watchers */
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typedef void (*uev_io_cb_t) (uev_t *ctx, uev_io_t *w, int fd, void *data);
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typedef void (*uev_timer_cb_t)(uev_t *ctx, uev_timer_t *w, void *data);
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/* Public interface */
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uev_io_t *uev_io_create (uev_t *ctx, uev_io_cb_t cb, void *data, int fd, uev_dir_t dir);
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int uev_io_delete (uev_t *ctx, uev_io_t *w);
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int uev_timer_set (uev_t *ctx, uev_timer_t *w, int timeout, int period);
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uev_timer_t *uev_timer_create (uev_t *ctx, uev_timer_cb_t cb, void *data, int timeout, int period);
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int uev_timer_delete (uev_t *ctx, uev_timer_t *w);
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void uev_run (uev_t *ctx);
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void uev_run_tick (uev_t *ctx, int msec);
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int uev_run_pending (uev_t *ctx);
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void uev_exit (uev_t *ctx);
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uev_t *uev_ctx_create (void);
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void uev_ctx_delete (uev_t *uev);
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#endif /* LIBUEV_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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