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- /* 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 "mqtt/queue.h"
- #include "user_interface.h"
- #include "osapi.h"
- #include "os_type.h"
- #include "mem.h"
- #include "mqtt/proto.h"
- uint8_t *last_rb_p_r;
- uint8_t *last_rb_p_w;
- uint32_t last_fill_cnt;
- 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)
- {
- uint32_t ret;
- last_rb_p_r = queue->rb.p_r;
- last_rb_p_w = queue->rb.p_w;
- last_fill_cnt = queue->rb.fill_cnt;
- ret = PROTO_AddRb(&queue->rb, buffer, len);
- if (ret == -1) {
- // rolling ring buffer back
- queue->rb.p_r = last_rb_p_r;
- queue->rb.p_w = last_rb_p_w;
- queue->rb.fill_cnt = last_fill_cnt;
- }
- return ret;
- }
- 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;
- }
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