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/*
* Copyright (C) 2016 "IoT.bzh"
* Author Fulup Ar Foll <fulup@iot.bzh>
*
* Licensed 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.
*/
#define _GNU_SOURCE
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <systemd/sd-event.h>
#include "afb-timer.h"
#define DEFAULT_PAUSE_DELAY 3000
#define DEFAULT_TEST_COUNT 1
typedef struct {
int value;
const char *uid;
} AutoTestCtxT;
static int TimerNext (sd_event_source* source, uint64_t timer, void* handle) {
TimerHandleT *timerHandle = (TimerHandleT*) handle;
int done;
uint64_t usec;
done= timerHandle->callback(timerHandle);
if (!done) {
AFB_API_WARNING(timerHandle->api, "TimerNext Callback Fail Tag=%s", timerHandle->uid);
return -1;
}
// Rearm timer if needed
timerHandle->count --;
if (timerHandle->count == 0) {
sd_event_source_unref(source);
if (timerHandle->freeCB) timerHandle->freeCB(timerHandle->context);
free (handle);
return 0;
}
else {
// otherwise validate timer for a new run
sd_event_now(afb_api_get_event_loop(timerHandle->api), CLOCK_MONOTONIC, &usec);
sd_event_source_set_enabled(source, SD_EVENT_ONESHOT);
sd_event_source_set_time(source, usec + timerHandle->delay*1000);
}
return 0;
}
void TimerEvtStop(TimerHandleT *timerHandle) {
sd_event_source_unref(timerHandle->evtSource);
free (timerHandle);
}
void TimerEvtStart(afb_api_t apiHandle, TimerHandleT *timerHandle, timerCallbackT callback, void *context) {
uint64_t usec;
// populate CB handle
timerHandle->callback=callback;
timerHandle->context=context;
timerHandle->api=apiHandle;
// set a timer with ~250us accuracy
sd_event_now(afb_api_get_event_loop(apiHandle), CLOCK_MONOTONIC, &usec);
sd_event_add_time(afb_api_get_event_loop(apiHandle), &timerHandle->evtSource, CLOCK_MONOTONIC, usec+timerHandle->delay*1000, 250, TimerNext, timerHandle);
}
// Create Binding Event at Init
int TimerEvtInit (afb_api_t apiHandle) {
AFB_API_DEBUG (apiHandle, "Timer-Init Done");
return 0;
}
uint64_t LockWait(afb_api_t apiHandle, uint64_t utimeout) {
uint64_t current_usec, pre_usec;
struct sd_event *event = afb_api_get_event_loop(apiHandle);
sd_event_now(event, CLOCK_MONOTONIC, &pre_usec);
sd_event_run(event, utimeout);
sd_event_now(event, CLOCK_MONOTONIC, ¤t_usec);
uint64_t diff = current_usec - pre_usec;
utimeout = utimeout < diff ? 0 : utimeout - diff;
return utimeout;
}
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