mirror of
https://github.com/moparisthebest/spdylay
synced 2024-12-22 15:48:53 -05:00
86 lines
3.2 KiB
C
86 lines
3.2 KiB
C
/*
|
|
* Spdylay - SPDY Library
|
|
*
|
|
* Copyright (c) 2012 Tatsuhiro Tsujikawa
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject to
|
|
* the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
#ifndef SPDYLAY_BUFFER_H
|
|
#define SPDYLAY_BUFFER_H
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif /* HAVE_CONFIG_H */
|
|
|
|
#include <spdylay/spdylay.h>
|
|
#include "spdylay_queue.h"
|
|
|
|
/*
|
|
* Fixed sized buffers backed by queue.
|
|
*/
|
|
typedef struct {
|
|
/* Capacity of each chunk buffer */
|
|
size_t capacity;
|
|
/* Queue of chunk buffers */
|
|
spdylay_queue q;
|
|
/* Total length of this buffer */
|
|
size_t len;
|
|
/* Offset of last chunk buffer */
|
|
size_t last_offset;
|
|
} spdylay_buffer;
|
|
|
|
/*
|
|
* Initializes buffer with fixed chunk size chunk_capacity.
|
|
*/
|
|
void spdylay_buffer_init(spdylay_buffer *buffer, size_t chunk_capacity);
|
|
/* Releases allocated memory for buffer */
|
|
void spdylay_buffer_free(spdylay_buffer *buffer);
|
|
/* Returns buffer pointer */
|
|
uint8_t* spdylay_buffer_get(spdylay_buffer *buffer);
|
|
/* Returns available buffer length */
|
|
size_t spdylay_buffer_avail(spdylay_buffer *buffer);
|
|
/* Advances buffer pointer by amount. This reduces available buffer
|
|
length. */
|
|
void spdylay_buffer_advance(spdylay_buffer *buffer, size_t amount);
|
|
/* Allocate new chunk buffer. This will increase total length of
|
|
buffer (returned by spdylay_buffer_length) by capacity-last_offset.
|
|
It means untouched buffer is assumued to be written. */
|
|
int spdylay_buffer_alloc(spdylay_buffer *buffer);
|
|
|
|
/* Returns total length of buffer */
|
|
size_t spdylay_buffer_length(spdylay_buffer *buffer);
|
|
/* Returns first chunk buffer length. If the chunk buffer is the last
|
|
one, last_offset will be returned. */
|
|
size_t spdylay_buffer_front_length(spdylay_buffer *buffer);
|
|
/* Returns first chunk buffer pointer */
|
|
uint8_t* spdylay_buffer_front_data(spdylay_buffer *buffer);
|
|
/* Pops first chunk buffer and decreases total length of buffer by the
|
|
size of poped chunk buffer. */
|
|
void spdylay_buffer_pop(spdylay_buffer *buffer);
|
|
|
|
/* Returns capacity of each fixed chunk buffer */
|
|
size_t spdylay_buffer_capacity(spdylay_buffer *buffer);
|
|
|
|
/* Stores the contents of buffer into buf. buf must be at least
|
|
spdylay_buffer_length(buffer) bytes long. */
|
|
void spdylay_buffer_serialize(spdylay_buffer *buffer, uint8_t *buf);
|
|
|
|
#endif /* SPDYLAY_BUFFER_H */
|