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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <nuttx/config.h>
#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <time.h>
#include <signal.h>
#include "nimble/nimble_npl.h"
static void
ble_npl_callout_timer_cb(union sigval sv)
{
struct ble_npl_callout *c = (struct ble_npl_callout *)sv.sival_ptr;
assert(c);
if (c->c_evq) {
ble_npl_eventq_put(c->c_evq, &c->c_ev);
} else {
c->c_ev.ev_cb(&c->c_ev);
}
}
void
ble_npl_callout_init(struct ble_npl_callout *c,
struct ble_npl_eventq *evq,
ble_npl_event_fn *ev_cb,
void *ev_arg)
{
struct sigevent event;
/* Initialize the callout. */
memset(c, 0, sizeof(*c));
c->c_ev.ev_cb = ev_cb;
c->c_ev.ev_arg = ev_arg;
c->c_evq = evq;
c->c_active = false;
event.sigev_notify = SIGEV_THREAD;
event.sigev_value.sival_ptr = c; // put callout obj in signal args
event.sigev_notify_function = ble_npl_callout_timer_cb;
event.sigev_notify_attributes = NULL;
timer_create(CLOCK_REALTIME, &event, &c->c_timer);
}
bool
ble_npl_callout_is_active(struct ble_npl_callout *c)
{
/* TODO: seek native posix method to determine whether timer_t is active.
TODO: fix bug where one-shot timer is still active after fired. */
return c->c_active;
}
int
ble_npl_callout_inited(struct ble_npl_callout *c)
{
return (c->c_timer != NULL);
}
ble_npl_error_t
ble_npl_callout_reset(struct ble_npl_callout *c,
ble_npl_time_t ticks)
{
struct itimerspec its;
if (ticks < 0) {
return BLE_NPL_EINVAL;
}
if (ticks == 0) {
ticks = 1;
}
c->c_ticks = ble_npl_time_get() + ticks;
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0; /* one shot */
its.it_value.tv_sec = (ticks / 1000);
its.it_value.tv_nsec = (ticks % 1000) * 1000000; /* expiration */
its.it_value.tv_nsec %= 1000000000;
c->c_active = true;
timer_settime(c->c_timer, 0, &its, NULL);
return BLE_NPL_OK;
}
int
ble_npl_callout_queued(struct ble_npl_callout *c)
{
struct itimerspec its;
timer_gettime(c->c_timer, &its);
return ((its.it_value.tv_sec > 0) ||
(its.it_value.tv_nsec > 0));
}
void
ble_npl_callout_stop(struct ble_npl_callout *c)
{
if (!ble_npl_callout_inited(c)) {
return;
}
struct itimerspec its;
its.it_interval.tv_sec = 0;
its.it_interval.tv_nsec = 0;
its.it_value.tv_sec = 0;
its.it_value.tv_nsec = 0;
timer_settime(c->c_timer, 0, &its, NULL);
c->c_active = false;
}
ble_npl_time_t
ble_npl_callout_get_ticks(struct ble_npl_callout *co)
{
return co->c_ticks;
}
void
ble_npl_callout_set_arg(struct ble_npl_callout *co, void *arg)
{
co->c_ev.ev_arg = arg;
}
uint32_t
ble_npl_callout_remaining_ticks(struct ble_npl_callout *co,
ble_npl_time_t now)
{
ble_npl_time_t rt;
uint32_t exp;
struct itimerspec its;
timer_gettime(co->c_timer, &its);
exp = its.it_value.tv_sec * 1000;
if (exp > now) {
rt = exp - now;
} else {
rt = 0;
}
return rt;
}
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