mirror of
https://github.com/troglobit/libuev.git
synced 2026-10-01 05:22:25 +07:00
Joachim Nilsson
59e1d376db
This patch adds support for at/cron-like jobs that need an absolute timer. The API supports waking up with an UEV_HUP callback event if the wall clock changed due to NTP or user input while waiting. - uev_cron_init() - uev_cron_set() - uev_cron_start() - uev_cron_stop() A very simple cronrun example/test program is also included. Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
98 lines
3.2 KiB
C
98 lines
3.2 KiB
C
/* libuEv - Private methods and data types, do not use directly!
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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 a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* 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 OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#ifndef LIBUEV_PRIVATE_H_
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#define LIBUEV_PRIVATE_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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/* I/O, timer, or signal watcher */
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typedef enum {
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UEV_CRON_TYPE = 1,
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UEV_IO_TYPE,
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UEV_SIGNAL_TYPE,
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UEV_TIMER_TYPE,
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} uev_type_t;
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/* Event mask, used internally only. */
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#define UEV_EVENT_MASK (UEV_READ | UEV_WRITE | UEV_PRI | UEV_HUP)
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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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/* Forward declare due to dependencys, don't try this at home kids. */
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struct uev;
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/* This is used to hide all private data members in uev_t */
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#define uev_private_t \
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LIST_ENTRY(uev) link; /* For queue.h linked list */ \
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\
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int active; \
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int events; \
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\
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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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\
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/* Arguments for different watchers */ \
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union { \
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/* Cron watchers */ \
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struct { \
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time_t when; \
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time_t interval; \
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} c; \
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\
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/* Timer watchers, time in milliseconds */ \
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struct { \
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int timeout; \
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int period; \
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} t; \
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} u; \
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\
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/* Watcher type */ \
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uev_type_t
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/* Internal API for dealing with generic watchers */
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int uev_watcher_init (uev_ctx_t *ctx, struct uev *w, uev_type_t type,
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void (*cb)(struct uev *, void *, int), void *arg,
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int fd, int events);
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int uev_watcher_start(struct uev *w);
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int uev_watcher_stop (struct uev *w);
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#endif /* LIBUEV_PRIVATE_H_ */
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/**
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* Local Variables:
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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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