esp-link/mqtt/queue.c

/* str_queue.c
*
* Copyright (c) 2014-2015, Tuan PM <tuanpm at live dot com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Redis nor the names of its contributors may be used
* to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "queue.h"

void ICACHE_FLASH_ATTR 
QUEUE_Init(QUEUE* queue, int bufferSize) {
  queue->buf = (uint8_t*)os_zalloc(bufferSize);
  RINGBUF_Init(&queue->rb, queue->buf, bufferSize);
}

int32_t ICACHE_FLASH_ATTR 
QUEUE_Puts(QUEUE* queue, uint8_t* buffer, uint16_t len) {
  return PROTO_AddRb(&queue->rb, buffer, len);
}

int32_t ICACHE_FLASH_ATTR 
QUEUE_Gets(QUEUE* queue, uint8_t* buffer, uint16_t* len, uint16_t maxLen) {
  return PROTO_ParseRb(&queue->rb, buffer, len, maxLen);
}

bool ICACHE_FLASH_ATTR 
QUEUE_IsEmpty(QUEUE* queue) {
  if (queue->rb.fill_cnt <= 0)
    return TRUE;
  return FALSE;
}