150 lines
4.0 KiB
C
150 lines
4.0 KiB
C
/*
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* SpanDSP - a series of DSP components for telephony
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*
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* schedule.c
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*
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* Written by Steve Underwood <steveu@coppice.org>
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*
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* Copyright (C) 2004 Steve Underwood
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*
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 2.1,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* $Id: schedule.c,v 1.17 2008/05/13 13:17:23 steveu Exp $
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*/
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#if defined(HAVE_CONFIG_H)
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <inttypes.h>
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#include <stdlib.h>
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#include <memory.h>
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#include "spandsp/telephony.h"
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#include "spandsp/logging.h"
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#include "spandsp/schedule.h"
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int span_schedule_event(span_sched_state_t *s, int us, span_sched_callback_func_t function, void *user_data)
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{
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int i;
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for (i = 0; i < s->max_to_date; i++)
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{
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if (s->sched[i].callback == NULL)
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break;
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/*endif*/
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}
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/*endfor*/
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if (i >= s->allocated)
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{
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s->allocated += 5;
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s->sched = (span_sched_t *) realloc(s->sched, sizeof(span_sched_t)*s->allocated);
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}
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/*endif*/
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if (i >= s->max_to_date)
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s->max_to_date = i + 1;
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/*endif*/
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s->sched[i].when = s->ticker + us;
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s->sched[i].callback = function;
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s->sched[i].user_data = user_data;
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return i;
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}
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/*- End of function --------------------------------------------------------*/
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uint64_t span_schedule_next(span_sched_state_t *s)
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{
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int i;
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uint64_t earliest;
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earliest = ~((uint64_t) 0);
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for (i = 0; i < s->max_to_date; i++)
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{
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if (s->sched[i].callback && earliest > s->sched[i].when)
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earliest = s->sched[i].when;
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/*endif*/
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}
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/*endfor*/
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return earliest;
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}
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/*- End of function --------------------------------------------------------*/
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uint64_t span_schedule_time(span_sched_state_t *s)
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{
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return s->ticker;
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}
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/*- End of function --------------------------------------------------------*/
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void span_schedule_update(span_sched_state_t *s, int us)
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{
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int i;
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span_sched_callback_func_t callback;
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void *user_data;
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s->ticker += us;
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for (i = 0; i < s->max_to_date; i++)
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{
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if (s->sched[i].callback && s->sched[i].when <= s->ticker)
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{
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callback = s->sched[i].callback;
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user_data = s->sched[i].user_data;
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s->sched[i].callback = NULL;
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s->sched[i].user_data = NULL;
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callback(s, user_data);
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}
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/*endif*/
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}
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/*endfor*/
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}
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/*- End of function --------------------------------------------------------*/
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void span_schedule_del(span_sched_state_t *s, int i)
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{
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if (i >= s->max_to_date
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||
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i < 0
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s->sched[i].callback == NULL)
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{
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span_log(&s->logging, SPAN_LOG_WARNING, "Requested to delete invalid scheduled ID %d ?\n", i);
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return;
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}
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/*endif*/
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s->sched[i].callback = NULL;
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}
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/*- End of function --------------------------------------------------------*/
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span_sched_state_t *span_schedule_init(span_sched_state_t *s)
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{
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memset(s, 0, sizeof(*s));
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span_log_init(&s->logging, SPAN_LOG_NONE, NULL);
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span_log_set_protocol(&s->logging, "SCHEDULE");
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return s;
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}
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/*- End of function --------------------------------------------------------*/
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int span_schedule_release(span_sched_state_t *s)
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{
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if (s->sched)
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{
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free(s->sched);
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s->sched = NULL;
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}
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return 0;
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}
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/*- End of function --------------------------------------------------------*/
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/*- End of file ------------------------------------------------------------*/
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