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https://github.com/troglobit/libuev.git
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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>
69 lines
2.0 KiB
C
69 lines
2.0 KiB
C
/* Test cron API in libuEv event library
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*
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* Copyright (c) 2016 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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#include <stdio.h>
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#include <time.h>
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#include <sys/time.h>
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#include "uev.h"
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#define UNUSED(arg) arg __attribute__ ((unused))
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static void cron_job(uev_t *w, void *arg, int events)
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{
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struct timeval tv;
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gettimeofday(&tv, NULL);
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printf("Cron job HELO %s", ctime(&tv.tv_sec));
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}
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int main(void)
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{
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uev_t cron_watcher;
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uev_ctx_t ctx;
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time_t when, interval;
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struct timeval tv;
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/* Initialize libuEv */
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uev_init(&ctx);
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/* Cron job */
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gettimeofday(&tv, NULL);
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when = tv.tv_sec + 30;
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interval = 30;
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uev_cron_init(&ctx, &cron_watcher, cron_job, NULL, when, interval);
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/* Start event loop */
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printf("Start of test %s", ctime(&tv.tv_sec));
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printf("Expected cron %s", ctime(&when));
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return uev_run(&ctx, 0);
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}
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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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