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Diffstat (limited to 'src/ziplist.h')
-rw-r--r-- | src/ziplist.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/ziplist.h b/src/ziplist.h new file mode 100644 index 0000000..f210ba6 --- /dev/null +++ b/src/ziplist.h @@ -0,0 +1,74 @@ +/* + * Copyright (c) 2009-2012, Pieter Noordhuis <pcnoordhuis at gmail dot com> + * Copyright (c) 2009-2012, 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 _ZIPLIST_H +#define _ZIPLIST_H + +#define ZIPLIST_HEAD 0 +#define ZIPLIST_TAIL 1 + +/* Each entry in the ziplist is either a string or an integer. */ +typedef struct { + /* When string is used, it is provided with the length (slen). */ + unsigned char *sval; + unsigned int slen; + /* When integer is used, 'sval' is NULL, and lval holds the value. */ + long long lval; +} ziplistEntry; + +unsigned char *ziplistNew(void); +unsigned char *ziplistMerge(unsigned char **first, unsigned char **second); +unsigned char *ziplistPush(unsigned char *zl, unsigned char *s, unsigned int slen, int where); +unsigned char *ziplistIndex(unsigned char *zl, int index); +unsigned char *ziplistNext(unsigned char *zl, unsigned char *p); +unsigned char *ziplistPrev(unsigned char *zl, unsigned char *p); +unsigned int ziplistGet(unsigned char *p, unsigned char **sval, unsigned int *slen, long long *lval); +unsigned char *ziplistInsert(unsigned char *zl, unsigned char *p, unsigned char *s, unsigned int slen); +unsigned char *ziplistDelete(unsigned char *zl, unsigned char **p); +unsigned char *ziplistDeleteRange(unsigned char *zl, int index, unsigned int num); +unsigned char *ziplistReplace(unsigned char *zl, unsigned char *p, unsigned char *s, unsigned int slen); +unsigned int ziplistCompare(unsigned char *p, unsigned char *s, unsigned int slen); +unsigned char *ziplistFind(unsigned char *zl, unsigned char *p, unsigned char *vstr, unsigned int vlen, unsigned int skip); +unsigned int ziplistLen(unsigned char *zl); +size_t ziplistBlobLen(unsigned char *zl); +void ziplistRepr(unsigned char *zl); +typedef int (*ziplistValidateEntryCB)(unsigned char* p, unsigned int head_count, void* userdata); +int ziplistValidateIntegrity(unsigned char *zl, size_t size, int deep, + ziplistValidateEntryCB entry_cb, void *cb_userdata); +void ziplistRandomPair(unsigned char *zl, unsigned long total_count, ziplistEntry *key, ziplistEntry *val); +void ziplistRandomPairs(unsigned char *zl, unsigned int count, ziplistEntry *keys, ziplistEntry *vals); +unsigned int ziplistRandomPairsUnique(unsigned char *zl, unsigned int count, ziplistEntry *keys, ziplistEntry *vals); +int ziplistSafeToAdd(unsigned char* zl, size_t add); + +#ifdef REDIS_TEST +int ziplistTest(int argc, char *argv[], int flags); +#endif + +#endif /* _ZIPLIST_H */ |