mirror of
https://github.com/espressif/arduino-esp32
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66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/*
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cbuf.h - Circular buffer implementation
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Copyright (c) 2014 Ivan Grokhotkov. All rights reserved.
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This file is part of the esp8266 core for Arduino environment.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include "sdkconfig.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/ringbuf.h"
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#include "freertos/semphr.h"
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class cbuf {
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public:
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cbuf(size_t size);
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~cbuf();
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size_t resizeAdd(size_t addSize);
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size_t resize(size_t newSize);
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size_t available() const;
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size_t size();
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size_t room() const;
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bool empty() const;
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bool full() const;
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int peek();
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int read();
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size_t read(char *dst, size_t size);
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size_t write(char c);
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size_t write(const char *src, size_t size);
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void flush();
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size_t remove(size_t size);
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cbuf *next;
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bool has_peek;
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uint8_t peek_byte;
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protected:
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RingbufHandle_t _buf = NULL;
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#if !CONFIG_DISABLE_HAL_LOCKS
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SemaphoreHandle_t _lock = NULL;
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#endif
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};
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