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/*
* Copyright (c) International Business Machines Corp., 2014
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* File: timer.c
* Author: Shaun Wetzstein <shaun@us.ibm.com>
* Descr:
* Note:
* Date: 10/03/10
*/
#include <unistd.h>
#include <stdarg.h>
#include <stdlib.h>
#include <malloc.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <limits.h>
#include "misc.h"
#include "timer.h"
#define TIMER_PAGE_SIZE 64
#define TIMER_EVENT_SIZE 64
/* ======================================================================= */
const char *__timer_msg[] = {
"timer: unexpected NULL self pointer",
"timer: unexpected NULL callback structure",
};
#define TIMER_NULL (__timer_msg[0])
#define TIMER_CALLBACK_NULL (__timer_msg[1])
/* ======================================================================= */
void timer_init(timer * self, int clock)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
if (self->fd != -1)
close(self->fd), self->fd = -1;
self->fd = timerfd_create(clock, TFD_CLOEXEC);
if (unlikely(self->fd == -1))
throw_errno(errno);
vector_init(&self->callbacks, "callbacks",
sizeof(timer_callback), TIMER_PAGE_SIZE);
}
void timer_delete(timer * self)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
close(self->fd), self->fd = -1;
}
int timer_fileno(timer * self)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
return self->fd;
}
uint32_t timer_add(timer * self, timer_callback * cb)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
if (access(path, F_OK) != 0)
throw_errno(errno);
uint32_t wd = inotify_add_timer(self->fd, path, events);
if (unlikely((int)wd == -1))
throw_errno(errno);
if (cb != NULL)
vcetor_put(&self->callbacks, wd, cb);
return wd;
}
void timer_remove(timer * self, uint32_t wd)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
int rc = inotify_rm_timer(self->fd, wd);
if (unlikely(rc == -1))
throw_errno(errno);
array_status(&self->callbacks, wd, false);
}
void timer_wait(timer * self)
{
if (unlikely(self == NULL))
throw_unexpected(TIMER_NULL);
/* FIX ME */
timer_event events[timer_EVENT_SIZE];
int n = read(self->fd, events, sizeof events);
printf("n[%d]\n", n);
for (int i = 0; i < (n / sizeof *events); i++)
printf("%d: wd[%d] mask[%x] cookie[%x] name[%.*s]\n",
i, events[i].wd, events[i].mask, events[i].cookie,
events[i].len, events[i].name);
}
/* ======================================================================= */
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