Relocate source fiiles to src/ subdirectory

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

src/cron.c

@@ -0,0 +1,165 @@
+/* libuEv - Micro event loop library
+ *
+ * Copyright (c) 2012       Flemming Madsen <flemming!madsen()madsensoft!dk>
+ * Copyright (c) 2013-2016  Joachim Nilsson <troglobit()gmail!com>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include <errno.h>
+#include <string.h>		/* memset() */
+#include <sys/timerfd.h>
+#include <unistd.h>		/* close(), read() */
+
+#include "uev.h"
+
+/* Missing defines in GLIBC <= 2.24 */
+#ifndef TFD_TIMER_CANCEL_ON_SET
+#define TFD_TIMER_CANCEL_ON_SET (1 << 1)
+#endif
+#ifndef TFD_SETTIME_FLAGS
+#define TFD_SETTIME_FLAGS (TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)
+#endif
+
+
+/**
+ * Create and start an at/cron job watcher
+ * @param ctx      A valid libuEv context
+ * @param w        Pointer to an uev_t watcher
+ * @param cb       Callback function for cron job
+ * @param arg      Optional callback argument
+ * @param when     First point in time to call @param cb
+ * @param interval For an at job this is zero, for cron the offset interval
+ *
+ * For at jobs set @param interval to zero and only use @param when.  For
+ * cron jobs, set @param interval to the offset.  E.g., if the job should
+ * run every five minutes set the @param tm_min of struct tm to five.
+ *
+ * Use mktime() to create the time_t arguments.  The special value zero
+ * may be used for @param when to denote 'now', where 'now' is when the
+ * event loop is started.  You can also treat time_t simply as a signed
+ * integer.  E.g., set @param interval to 3600 to create a cron job that
+ * runs every hour.
+ *
+ * @return POSIX OK(0) or non-zero with @param errno set on error.
+ */
+int uev_cron_init(uev_ctx_t *ctx, uev_t *w, uev_cb_t *cb, void *arg, time_t when, time_t interval)
+{
+	int fd;
+
+	if (when < 0 || interval < 0) {
+		errno = ERANGE;
+		return -1;
+	}
+
+	fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK | TFD_CLOEXEC);
+	if (fd < 0)
+		return -1;
+
+	if (uev_watcher_init(ctx, w, UEV_CRON_TYPE, cb, arg, fd, UEV_READ))
+		goto exit;
+
+	if (uev_cron_set(w, when, interval)) {
+		uev_watcher_stop(w);
+	exit:
+		close(fd);
+		return -1;
+	}
+
+	return 0;
+}
+
+/**
+ * Reset an at/cron job watcher
+ * @param w        Watcher to reset
+ * @param when     First point in time to call @param cb
+ * @param interval For an at job this is zero, for cron the offset interval
+ *
+ * @return POSIX OK(0) or non-zero with @param errno set on error.
+ */
+int uev_cron_set(uev_t *w, time_t when, time_t interval)
+{
+	/* Every watcher must be registered to a context */
+	if (!w || !w->ctx) {
+		errno = EINVAL;
+		return -1;
+	}
+
+	if (when < 0 || interval < 0) {
+		errno = ERANGE;
+		return -1;
+	}
+
+	/* Handle stopped timers */
+	if (w->fd < 0) {
+		/* Timer already stopped */
+		if (!when && !interval)
+			return 0;
+
+		/* Remove from internal list */
+		LIST_REMOVE(w, link);
+
+		if (uev_cron_init(w->ctx, w, (uev_cb_t *)w->cb, w->arg, when, interval))
+			return -1;
+	}
+
+	w->u.c.when     = when;
+	w->u.c.interval = interval;
+
+	if (w->ctx->running) {
+		struct itimerspec time;
+
+		memset(&time, 0, sizeof(time));
+		time.it_value.tv_sec    = when;
+		time.it_interval.tv_sec = interval;
+		if (timerfd_settime(w->fd, TFD_SETTIME_FLAGS, &time, NULL) < 0)
+			return 1;
+	}
+
+	return uev_watcher_start(w);
+}
+
+/**
+ * Start a stopped at/cron job watcher
+ * @param w  Watcher to start (again)
+ *
+ * @return POSIX OK(0) or non-zero with @param errno set on error.
+ */
+int uev_cron_start(uev_t *w)
+{
+	return uev_timer_start(w);
+}
+
+/**
+ * Stop and unregister an at/cron job watcher
+ * @param w  Watcher to stop
+ *
+ * @return POSIX OK(0) or non-zero with @param errno set on error.
+ */
+int uev_cron_stop(uev_t *w)
+{
+	return uev_timer_stop(w);
+}
+
+/**
+ * Local Variables:
+ *  indent-tabs-mode: t
+ *  c-file-style: "linux"
+ * End:
+ */