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Streams: 12 commits squashed into the initial Streams implementation.

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antirez
2017-08-30 12:40:27 +02:00
parent 045d65c3af
commit 79866a6361
12 changed files with 1323 additions and 10 deletions
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src/listpack.h Normal file
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/* Listpack -- A lists of strings serialization format
*
* This file implements the specification you can find at:
*
* https://github.com/antirez/listpack
*
* Copyright (c) 2017, Salvatore Sanfilippo <antirez at gmail 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.
*/
#ifndef __LISTPACK_H
#define __LISTPACK_H
#include <stdint.h>
#define LP_INTBUF_SIZE 21 /* 20 digits of -2^63 + 1 null term = 21. */
/* lpInsert() where argument possible values: */
#define LP_BEFORE 0
#define LP_AFTER 1
#define LP_REPLACE 2
unsigned char *lpNew(void);
void lpFree(unsigned char *lp);
unsigned char *lpInsert(unsigned char *lp, unsigned char *ele, uint32_t size, unsigned char *p, int where, unsigned char **newp);
unsigned char *lpAppend(unsigned char *lp, unsigned char *ele, uint32_t size);
unsigned char *lpDelete(unsigned char *lp, unsigned char *p, unsigned char **newp);
uint32_t lpLength(unsigned char *lp);
unsigned char *lpGet(unsigned char *p, int64_t *count, unsigned char *intbuf);
unsigned char *lpFirst(unsigned char *lp);
unsigned char *lpLast(unsigned char *lp);
unsigned char *lpNext(unsigned char *lp, unsigned char *p);
unsigned char *lpPrev(unsigned char *lp, unsigned char *p);
uint32_t lpBytes(unsigned char *lp);
unsigned char *lpSeek(unsigned char *lp, long index);
#endif