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https://github.com/troglobit/libuev.git
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130 lines
3.6 KiB
C
130 lines
3.6 KiB
C
/* Test libuev event 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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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h> /* intptr_t */
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#include "libuev.h"
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static int in, out;
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static int period = 0;
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static uev_timer_t *timer = NULL;
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static int lifetime_cb(uev_t *ctx, uev_timer_t *w, void *data)
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{
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fprintf(stderr, "\nLifetime exceeded %p\n", data);
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uev_exit(ctx);
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return 0;
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}
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/* The pipe watchdog, if it triggers we haven't received data in time. */
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static int timeout_cb(uev_t *ctx, uev_timer_t *w, void *data)
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{
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timer = NULL;
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fprintf(stderr, "\nTimeout exceeded %p\n", data);
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uev_timer_delete(ctx, w);
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uev_exit(ctx);
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return 0;
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}
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static int pipe_read_cb(uev_t *ctx, uev_io_t *w, int fd, void *data)
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{
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int cnt;
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char msg[50];
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/* Kick watchdog */
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if (timer) {
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uev_timer_delete(ctx, timer);
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timer = uev_timer_create(ctx, 1000, timeout_cb, NULL);
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}
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cnt = read(in, msg, sizeof(msg));
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// fprintf(stderr, "READ %.*s %d\n", cnt, msg, cnt);
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fprintf(stderr, "%.*s.%d ", cnt, msg, cnt);
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return 0;
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}
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static int pipe_write_cb(uev_t *ctx, uev_timer_t *handle, void *data)
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{
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int cnt = (int)(intptr_t)data;
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char *msg = "TESTING";
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write(out, msg, cnt);
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// fprintf(stderr, "WRITE %.*s %d\n", cnt, msg, cnt);
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fprintf(stderr, "%d ", cnt);
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period = cnt + 5;
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uev_timer_create(ctx, period * 100, pipe_write_cb, (void *)(intptr_t)(cnt + 1));
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return 0;
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}
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int main(void)
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{
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int fd[2];
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uev_t *ctx = uev_ctx_create();
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/* Total program execution time */
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uev_timer_create(ctx, 4000, lifetime_cb, (void *)(intptr_t)2);
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/* Work load, one timer callback writes to a pipe periodically,
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* and one I/O watcher that is called every time the pipe has
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* some data. */
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pipe(fd);
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in = fd[0];
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out = fd[1];
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uev_timer_create(ctx, 400, pipe_write_cb, (void *)(intptr_t)1);
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uev_io_create(ctx, in, UEV_FHIN, pipe_read_cb, NULL);
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/* Watchdog for the above timer callback, if it doesn't wake up
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* and write to the pipe within a given deadline it will bark. */
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timer = uev_timer_create(ctx, 950, timeout_cb, (void *)(intptr_t)1);
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/* Start event loop */
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uev_run(ctx);
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/* Tear down event context */
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uev_ctx_delete(ctx);
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fprintf(stderr, "Period is %d must be 10: %s\n", period, 10 == period ? "OK" : "ERROR!");
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if (10 != period)
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return 1;
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return 0;
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}
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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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