97 lines
2.1 KiB
C++
97 lines
2.1 KiB
C++
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2015 Software Radio Systems Limited
|
|
*
|
|
* \section LICENSE
|
|
*
|
|
* This file is part of the srsUE library.
|
|
*
|
|
* srsUE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsUE 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 Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
#ifndef BLOCK_QUEUE
|
|
#define BLOCK_QUEUE
|
|
|
|
#include <queue>
|
|
#include <memory>
|
|
#include <utility>
|
|
#include <pthread.h>
|
|
#include <stdio.h>
|
|
namespace srslte {
|
|
|
|
template<typename myobj>
|
|
class block_queue {
|
|
|
|
public:
|
|
block_queue<myobj>() {
|
|
pthread_mutex_init(&mutex, NULL);
|
|
pthread_cond_init(&cvar, NULL);
|
|
}
|
|
void push(const myobj& value) {
|
|
pthread_mutex_lock(&mutex);
|
|
q.push(value);
|
|
pthread_cond_signal(&cvar);
|
|
pthread_mutex_unlock(&mutex);
|
|
}
|
|
|
|
bool try_pop(myobj *value) {
|
|
pthread_mutex_lock(&mutex);
|
|
if (q.empty()) {
|
|
pthread_mutex_unlock(&mutex);
|
|
return false;
|
|
}
|
|
if (value) {
|
|
*value = q.front();
|
|
q.pop();
|
|
}
|
|
pthread_mutex_unlock(&mutex);
|
|
return true;
|
|
}
|
|
|
|
myobj wait_pop() { // blocking pop
|
|
pthread_mutex_lock(&mutex);
|
|
while(q.empty()) {
|
|
pthread_cond_wait(&cvar, &mutex);
|
|
}
|
|
myobj value = q.front();
|
|
q.pop();
|
|
pthread_mutex_unlock(&mutex);
|
|
return value;
|
|
}
|
|
|
|
bool empty() const { // queue is empty?
|
|
pthread_mutex_lock(&mutex);
|
|
bool ret = q.empty();
|
|
pthread_mutex_unlock(&mutex);
|
|
return ret;
|
|
}
|
|
|
|
void clear() { // remove all items
|
|
myobj item;
|
|
while (try_pop(item));
|
|
}
|
|
|
|
private:
|
|
std::queue<myobj> q;
|
|
pthread_mutex_t mutex;
|
|
pthread_cond_t cvar;
|
|
};
|
|
|
|
}
|
|
|
|
#endif |