2017-05-18 03:11:31 -07:00
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsUE 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 Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/******************************************************************************
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* File: timers.h
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* Description: Manually incremented timers. Call a callback function upon
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* expiry.
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* Reference:
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*****************************************************************************/
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#ifndef TIMERS_H
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#define TIMERS_H
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#include <stdio.h>
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#include <stdint.h>
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#include <vector>
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#include <time.h>
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namespace srslte {
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class timer_callback
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{
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public:
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virtual void timer_expired(uint32_t timer_id) = 0;
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};
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class timers
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{
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public:
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class timer
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{
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public:
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timer(uint32_t id_=0) {id = id_; counter = 0; timeout = 0; running = false; callback = NULL; }
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void set(timer_callback *callback_, uint32_t timeout_) {
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callback = callback_;
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timeout = timeout_;
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reset();
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}
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bool is_running() {
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return (counter < timeout) && running;
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}
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bool is_expired() {
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return callback && (counter >= timeout || !running);
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}
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uint32_t get_timeout() {
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return timeout;
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}
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void reset() {
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counter = 0;
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}
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void step() {
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if (running) {
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counter++;
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if (is_expired()) {
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running = false;
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if (callback) {
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callback->timer_expired(id);
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}
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}
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}
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}
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void stop() {
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running = false;
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}
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void run() {
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running = true;
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}
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uint32_t id;
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private:
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timer_callback *callback;
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uint32_t timeout;
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uint32_t counter;
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bool running;
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};
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timers(uint32_t nof_timers_) : timer_list(nof_timers_) {
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nof_timers = nof_timers_;
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next_timer = 0;
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for (uint32_t i=0;i<nof_timers;i++) {
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timer_list[i].id = i;
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}
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}
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void step_all() {
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for (uint32_t i=0;i<nof_timers;i++) {
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get(i)->step();
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}
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}
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void stop_all() {
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for (uint32_t i=0;i<nof_timers;i++) {
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get(i)->stop();
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}
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}
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void run_all() {
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for (uint32_t i=0;i<nof_timers;i++) {
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get(i)->run();
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}
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}
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void reset_all() {
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for (uint32_t i=0;i<nof_timers;i++) {
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get(i)->reset();
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}
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}
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timer *get(uint32_t i) {
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if (i < nof_timers) {
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return &timer_list[i];
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} else {
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printf("Error accessing invalid timer %d (Only %d timers available)\n", i, nof_timers);
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return NULL;
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}
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}
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uint32_t get_unique_id() {
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if (next_timer == nof_timers){
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printf("No more unique timer ids (Only %d timers available)\n", nof_timers);
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next_timer = 0;
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}
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return next_timer++;
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}
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private:
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uint32_t nof_timers;
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uint32_t next_timer;
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std::vector<timer> timer_list;
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};
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} // namespace srslte
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#endif // TIMERS_H
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