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/*
* Copyright (c) 2011 William Pitcock <nenolod@dereferenced.org>.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "mowgli.h"
void mowgli_simple_eventloop_timeout_once(mowgli_eventloop_t *eventloop, int timeout)
{
time_t delay, currtime;
int t;
return_if_fail(eventloop != NULL);
return_if_fail(eventloop->eventloop_ops != NULL);
mowgli_eventloop_synchronize(eventloop);
currtime = mowgli_eventloop_get_time(eventloop);
delay = mowgli_eventloop_next_timer(eventloop);
if (delay <= currtime)
{
mowgli_eventloop_run_timers(eventloop);
mowgli_eventloop_synchronize(eventloop);
currtime = mowgli_eventloop_get_time(eventloop);
delay = mowgli_eventloop_next_timer(eventloop);
}
if (timeout)
t = timeout;
else
{
if (delay <= currtime)
t = -1;
else
t = (delay - currtime) * 1000;
}
#ifdef DEBUG
mowgli_log("delay: %ld, currtime: %ld, select period: %d", delay, currtime, t);
#endif
eventloop->eventloop_ops->select(eventloop, t);
}
void mowgli_simple_eventloop_run_once(mowgli_eventloop_t *eventloop)
{
eventloop->eventloop_ops->timeout_once(eventloop, 0);
}
void mowgli_simple_eventloop_error_handler(mowgli_eventloop_t *eventloop, mowgli_eventloop_io_t *io, mowgli_eventloop_io_dir_t dir, void *userdata)
{
mowgli_eventloop_pollable_t *pollable = mowgli_eventloop_io_pollable(io);
if (pollable != NULL)
mowgli_pollable_destroy(eventloop, pollable);
}
static void mowgli_null_eventloop_pollsetup(mowgli_eventloop_t *eventloop)
{
return;
}
static void mowgli_null_eventloop_pollshutdown(mowgli_eventloop_t *eventloop)
{
return;
}
static void mowgli_null_eventloop_destroy(mowgli_eventloop_t *eventloop, mowgli_eventloop_pollable_t *pollable)
{
return;
}
static void mowgli_null_eventloop_setselect(mowgli_eventloop_t *eventloop, mowgli_eventloop_pollable_t *pollable, mowgli_eventloop_io_dir_t dir, mowgli_eventloop_io_cb_t *event_function)
{
mowgli_log("null eventloop does not really do polling, events for pollable<%p> will be ignored", pollable);
switch (dir)
{
case MOWGLI_EVENTLOOP_IO_READ:
pollable->read_function = event_function;
break;
case MOWGLI_EVENTLOOP_IO_WRITE:
pollable->write_function = event_function;
break;
default:
mowgli_log("unhandled pollable direction %d", dir);
break;
}
return;
}
static void mowgli_null_eventloop_select(mowgli_eventloop_t *eventloop, int time)
{
usleep(time);
}
mowgli_eventloop_ops_t _mowgli_null_pollops = {
.timeout_once = mowgli_simple_eventloop_timeout_once,
.run_once = mowgli_simple_eventloop_run_once,
.pollsetup = mowgli_null_eventloop_pollsetup,
.pollshutdown = mowgli_null_eventloop_pollshutdown,
.setselect = mowgli_null_eventloop_setselect,
.select = mowgli_null_eventloop_select,
.destroy = mowgli_null_eventloop_destroy,
};
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