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/*
* SPDX-FileCopyrightText: Copyright 2022-2023 Arm Limited and/or its affiliates <open-source-office@arm.com>
*
* SPDX-License-Identifier: Apache-2.0
*
* 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
*
* 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.
*/
#pragma once
/*****************************************************************************
* Includes
*****************************************************************************/
#include <FreeRTOS.h>
#include <queue.h>
#include <cstdlib>
#include <functional>
#include <ethosu_log.h>
/*****************************************************************************
* Queue
*****************************************************************************/
template <typename T>
class Queue {
public:
using Predicate = std::function<bool(const T &data)>;
Queue(const size_t size = 10) : queue(xQueueCreate(size, sizeof(T))) {}
~Queue() {
vQueueDelete(queue);
}
int send(const T &msg, TickType_t delay = portMAX_DELAY) {
if (pdPASS != xQueueSend(queue, &msg, delay)) {
LOG_ERR("Failed to send message");
return -1;
}
return 0;
}
int receive(T &msg, TickType_t delay = portMAX_DELAY) {
if (pdTRUE != xQueueReceive(queue, &msg, delay)) {
LOG_ERR("Failed to receive message");
return -1;
}
return 0;
}
void erase(Predicate pred) {
const size_t count = uxQueueMessagesWaiting(queue);
for (size_t i = 0; i < count; i++) {
T data;
if (pdPASS != xQueueReceive(queue, &data, 0)) {
LOG_ERR("Failed to dequeue message");
abort();
}
if (!pred(data)) {
if (pdPASS != xQueueSend(queue, &data, 0)) {
LOG_ERR("Failed to requeue message");
abort();
}
}
}
}
private:
QueueHandle_t queue;
};
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