return 0; /* not found */
}
-/* Struct to hold a inclusive/exclusive range spec. */
-typedef struct {
- double min, max;
- int minex, maxex; /* are min or max exclusive? */
-} zrangespec;
-
static int zslValueGteMin(double value, zrangespec *spec) {
return spec->minex ? (value > spec->min) : (value >= spec->min);
}
return spec->maxex ? (value < spec->max) : (value <= spec->max);
}
-static int zslValueInRange(double value, zrangespec *spec) {
- return zslValueGteMin(value,spec) && zslValueLteMax(value,spec);
-}
-
/* Returns if there is a part of the zset is in range. */
int zslIsInRange(zskiplist *zsl, zrangespec *range) {
zskiplistNode *x;
x = x->level[i].forward;
}
- /* The tail is in range, so the previous block should always return a
- * node that is non-NULL and the last one to be out of range. */
+ /* This is an inner range, so the next node cannot be NULL. */
x = x->level[0].forward;
- redisAssert(x != NULL && zslValueInRange(x->score,&range));
+ redisAssert(x != NULL);
+
+ /* Check if score <= max. */
+ if (!zslValueLteMax(x->score,&range)) return NULL;
return x;
}
x = x->level[i].forward;
}
- /* The header is in range, so the previous block should always return a
- * node that is non-NULL and in range. */
- redisAssert(x != NULL && zslValueInRange(x->score,&range));
+ /* This is an inner range, so this node cannot be NULL. */
+ redisAssert(x != NULL);
+
+ /* Check if score >= min. */
+ if (!zslValueGteMin(x->score,&range)) return NULL;
return x;
}
/* Find pointer to the first element contained in the specified range.
* Returns NULL when no element is contained in the range. */
-unsigned char *zzlFirstInRange(robj *zobj, zrangespec range) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlFirstInRange(unsigned char *zl, zrangespec range) {
unsigned char *eptr = ziplistIndex(zl,0), *sptr;
double score;
redisAssert(sptr != NULL);
score = zzlGetScore(sptr);
- if (zslValueGteMin(score,&range))
- return eptr;
+ if (zslValueGteMin(score,&range)) {
+ /* Check if score <= max. */
+ if (zslValueLteMax(score,&range))
+ return eptr;
+ return NULL;
+ }
/* Move to next element. */
eptr = ziplistNext(zl,sptr);
/* Find pointer to the last element contained in the specified range.
* Returns NULL when no element is contained in the range. */
-unsigned char *zzlLastInRange(robj *zobj, zrangespec range) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlLastInRange(unsigned char *zl, zrangespec range) {
unsigned char *eptr = ziplistIndex(zl,-2), *sptr;
double score;
redisAssert(sptr != NULL);
score = zzlGetScore(sptr);
- if (zslValueLteMax(score,&range))
- return eptr;
+ if (zslValueLteMax(score,&range)) {
+ /* Check if score >= min. */
+ if (zslValueGteMin(score,&range))
+ return eptr;
+ return NULL;
+ }
/* Move to previous element by moving to the score of previous element.
* When this returns NULL, we know there also is no element. */
return NULL;
}
-unsigned char *zzlFind(robj *zobj, robj *ele, double *score) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlFind(unsigned char *zl, robj *ele, double *score) {
unsigned char *eptr = ziplistIndex(zl,0), *sptr;
ele = getDecodedObject(ele);
/* Delete (element,score) pair from ziplist. Use local copy of eptr because we
* don't want to modify the one given as argument. */
-int zzlDelete(robj *zobj, unsigned char *eptr) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlDelete(unsigned char *zl, unsigned char *eptr) {
unsigned char *p = eptr;
/* TODO: add function to ziplist API to delete N elements from offset. */
zl = ziplistDelete(zl,&p);
zl = ziplistDelete(zl,&p);
- zobj->ptr = zl;
- return REDIS_OK;
+ return zl;
}
-int zzlInsertAt(robj *zobj, robj *ele, double score, unsigned char *eptr) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlInsertAt(unsigned char *zl, unsigned char *eptr, robj *ele, double score) {
unsigned char *sptr;
char scorebuf[128];
int scorelen;
- int offset;
+ size_t offset;
redisAssert(ele->encoding == REDIS_ENCODING_RAW);
scorelen = d2string(scorebuf,sizeof(scorebuf),score);
zl = ziplistInsert(zl,sptr,(unsigned char*)scorebuf,scorelen);
}
- zobj->ptr = zl;
- return REDIS_OK;
+ return zl;
}
/* Insert (element,score) pair in ziplist. This function assumes the element is
* not yet present in the list. */
-int zzlInsert(robj *zobj, robj *ele, double score) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlInsert(unsigned char *zl, robj *ele, double score) {
unsigned char *eptr = ziplistIndex(zl,0), *sptr;
double s;
/* First element with score larger than score for element to be
* inserted. This means we should take its spot in the list to
* maintain ordering. */
- zzlInsertAt(zobj,ele,score,eptr);
+ zl = zzlInsertAt(zl,eptr,ele,score);
break;
} else if (s == score) {
/* Ensure lexicographical ordering for elements. */
if (zzlCompareElements(eptr,ele->ptr,sdslen(ele->ptr)) > 0) {
- zzlInsertAt(zobj,ele,score,eptr);
+ zl = zzlInsertAt(zl,eptr,ele,score);
break;
}
}
/* Push on tail of list when it was not yet inserted. */
if (eptr == NULL)
- zzlInsertAt(zobj,ele,score,NULL);
+ zl = zzlInsertAt(zl,NULL,ele,score);
decrRefCount(ele);
- return REDIS_OK;
+ return zl;
}
-unsigned long zzlDeleteRangeByScore(robj *zobj, zrangespec range) {
- unsigned char *zl = zobj->ptr;
+unsigned char *zzlDeleteRangeByScore(unsigned char *zl, zrangespec range, unsigned long *deleted) {
unsigned char *eptr, *sptr;
double score;
- unsigned long deleted = 0;
+ unsigned long num = 0;
- eptr = zzlFirstInRange(zobj,range);
- if (eptr == NULL) return deleted;
+ if (deleted != NULL) *deleted = 0;
+ eptr = zzlFirstInRange(zl,range);
+ if (eptr == NULL) return zl;
/* When the tail of the ziplist is deleted, eptr will point to the sentinel
* byte and ziplistNext will return NULL. */
/* Delete both the element and the score. */
zl = ziplistDelete(zl,&eptr);
zl = ziplistDelete(zl,&eptr);
- deleted++;
+ num++;
} else {
/* No longer in range. */
break;
}
}
- return deleted;
+ if (deleted != NULL) *deleted = num;
+ return zl;
}
/* Delete all the elements with rank between start and end from the skiplist.
* Start and end are inclusive. Note that start and end need to be 1-based */
-unsigned long zzlDeleteRangeByRank(robj *zobj, unsigned int start, unsigned int end) {
+unsigned char *zzlDeleteRangeByRank(unsigned char *zl, unsigned int start, unsigned int end, unsigned long *deleted) {
unsigned int num = (end-start)+1;
- zobj->ptr = ziplistDeleteRange(zobj->ptr,2*(start-1),2*num);
- return num;
+ if (deleted) *deleted = num;
+ zl = ziplistDeleteRange(zl,2*(start-1),2*num);
+ return zl;
}
/*-----------------------------------------------------------------------------
* Common sorted set API
*----------------------------------------------------------------------------*/
-int zsLength(robj *zobj) {
+unsigned int zsetLength(robj *zobj) {
int length = -1;
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
length = zzlLength(zobj->ptr);
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
length = ((zset*)zobj->ptr)->zsl->length;
} else {
redisPanic("Unknown sorted set encoding");
return length;
}
-void zsConvert(robj *zobj, int encoding) {
+void zsetConvert(robj *zobj, int encoding) {
zset *zs;
zskiplistNode *node, *next;
robj *ele;
unsigned int vlen;
long long vlong;
- if (encoding != REDIS_ENCODING_RAW)
+ if (encoding != REDIS_ENCODING_SKIPLIST)
redisPanic("Unknown target encoding");
zs = zmalloc(sizeof(*zs));
zfree(zobj->ptr);
zobj->ptr = zs;
- zobj->encoding = REDIS_ENCODING_RAW;
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ zobj->encoding = REDIS_ENCODING_SKIPLIST;
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
unsigned char *zl = ziplistNew();
if (encoding != REDIS_ENCODING_ZIPLIST)
zfree(zs->zsl->header);
zfree(zs->zsl);
- /* Immediately store pointer to ziplist in object because it will
- * change because of reallocations when pushing to the ziplist. */
- zobj->ptr = zl;
-
while (node) {
ele = getDecodedObject(node->obj);
- redisAssert(zzlInsertAt(zobj,ele,node->score,NULL) == REDIS_OK);
+ zl = zzlInsertAt(zl,NULL,ele,node->score);
decrRefCount(ele);
next = node->level[0].forward;
}
zfree(zs);
+ zobj->ptr = zl;
zobj->encoding = REDIS_ENCODING_ZIPLIST;
} else {
redisPanic("Unknown sorted set encoding");
/* Prefer non-encoded element when dealing with ziplists. */
ele = c->argv[3];
- if ((eptr = zzlFind(zobj,ele,&curscore)) != NULL) {
+ if ((eptr = zzlFind(zobj->ptr,ele,&curscore)) != NULL) {
if (incr) {
score += curscore;
if (isnan(score)) {
/* Remove and re-insert when score changed. */
if (score != curscore) {
- redisAssert(zzlDelete(zobj,eptr) == REDIS_OK);
- redisAssert(zzlInsert(zobj,ele,score) == REDIS_OK);
+ zobj->ptr = zzlDelete(zobj->ptr,eptr);
+ zobj->ptr = zzlInsert(zobj->ptr,ele,score);
signalModifiedKey(c->db,key);
server.dirty++;
} else {
/* Optimize: check if the element is too large or the list becomes
* too long *before* executing zzlInsert. */
- redisAssert(zzlInsert(zobj,ele,score) == REDIS_OK);
+ zobj->ptr = zzlInsert(zobj->ptr,ele,score);
if (zzlLength(zobj->ptr) > server.zset_max_ziplist_entries)
- zsConvert(zobj,REDIS_ENCODING_RAW);
+ zsetConvert(zobj,REDIS_ENCODING_SKIPLIST);
if (sdslen(ele->ptr) > server.zset_max_ziplist_value)
- zsConvert(zobj,REDIS_ENCODING_RAW);
+ zsetConvert(zobj,REDIS_ENCODING_SKIPLIST);
signalModifiedKey(c->db,key);
server.dirty++;
else /* ZADD */
addReply(c,shared.cone);
}
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
zskiplistNode *znode;
dictEntry *de;
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
unsigned char *eptr;
- if ((eptr = zzlFind(zobj,ele,NULL)) != NULL) {
- redisAssert(zzlDelete(zobj,eptr) == REDIS_OK);
+ if ((eptr = zzlFind(zobj->ptr,ele,NULL)) != NULL) {
+ zobj->ptr = zzlDelete(zobj->ptr,eptr);
if (zzlLength(zobj->ptr) == 0) dbDelete(c->db,key);
} else {
addReply(c,shared.czero);
return;
}
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
dictEntry *de;
double score;
checkType(c,zobj,REDIS_ZSET)) return;
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
- deleted = zzlDeleteRangeByScore(zobj,range);
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ zobj->ptr = zzlDeleteRangeByScore(zobj->ptr,range,&deleted);
+ if (zzlLength(zobj->ptr) == 0) dbDelete(c->db,key);
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
deleted = zslDeleteRangeByScore(zs->zsl,range,zs->dict);
if (htNeedsResize(zs->dict)) dictResize(zs->dict);
checkType(c,zobj,REDIS_ZSET)) return;
/* Sanitize indexes. */
- llen = zsLength(zobj);
+ llen = zsetLength(zobj);
if (start < 0) start = llen+start;
if (end < 0) end = llen+end;
if (start < 0) start = 0;
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
/* Correct for 1-based rank. */
- deleted = zzlDeleteRangeByRank(zobj,start+1,end+1);
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ zobj->ptr = zzlDeleteRangeByRank(zobj->ptr,start+1,end+1,&deleted);
+ if (zzlLength(zobj->ptr) == 0) dbDelete(c->db,key);
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
/* Correct for 1-based rank. */
it->zl.sptr = ziplistNext(it->zl.zl,it->zl.eptr);
redisAssert(it->zl.sptr != NULL);
}
- } else if (op->encoding == REDIS_ENCODING_RAW) {
+ } else if (op->encoding == REDIS_ENCODING_SKIPLIST) {
it->sl.zs = op->subject->ptr;
it->sl.node = it->sl.zs->zsl->header->level[0].forward;
} else {
iterzset *it = &op->iter.zset;
if (op->encoding == REDIS_ENCODING_ZIPLIST) {
REDIS_NOTUSED(it); /* skip */
- } else if (op->encoding == REDIS_ENCODING_RAW) {
+ } else if (op->encoding == REDIS_ENCODING_SKIPLIST) {
REDIS_NOTUSED(it); /* skip */
} else {
redisPanic("Unknown sorted set encoding");
iterzset *it = &op->iter.zset;
if (op->encoding == REDIS_ENCODING_ZIPLIST) {
return zzlLength(it->zl.zl);
- } else if (op->encoding == REDIS_ENCODING_RAW) {
+ } else if (op->encoding == REDIS_ENCODING_SKIPLIST) {
return it->sl.zs->zsl->length;
} else {
redisPanic("Unknown sorted set encoding");
if (op->type == REDIS_SET) {
iterset *it = &op->iter.set;
if (op->encoding == REDIS_ENCODING_INTSET) {
- if (!intsetGet(it->is.is,it->is.ii,&val->ell))
+ if (!intsetGet(it->is.is,it->is.ii,(int64_t*)&val->ell))
return 0;
val->score = 1.0;
/* Move to next element. */
zzlNext(it->zl.zl,&it->zl.eptr,&it->zl.sptr);
- } else if (op->encoding == REDIS_ENCODING_RAW) {
+ } else if (op->encoding == REDIS_ENCODING_SKIPLIST) {
if (it->sl.node == NULL)
return 0;
val->ele = it->sl.node->obj;
zuiObjectFromValue(val);
if (op->encoding == REDIS_ENCODING_ZIPLIST) {
- if (zzlFind(op->subject,val->ele,score) != NULL) {
+ if (zzlFind(it->zl.zl,val->ele,score) != NULL) {
/* Score is already set by zzlFind. */
return 1;
} else {
return 0;
}
- } else if (op->encoding == REDIS_ENCODING_RAW) {
+ } else if (op->encoding == REDIS_ENCODING_SKIPLIST) {
dictEntry *de;
if ((de = dictFind(it->sl.zs->dict,val->ele)) != NULL) {
*score = *(double*)dictGetEntryVal(de);
dstobj = createZsetObject();
dstzset = dstobj->ptr;
+ memset(&zval, 0, sizeof(zval));
if (op == REDIS_OP_INTER) {
/* Skip everything if the smallest input is empty. */
score = src[0].weight * zval.score;
for (j = 1; j < setnum; j++) {
- if (zuiFind(&src[j],&zval,&value)) {
+ /* It is not safe to access the zset we are
+ * iterating, so explicitly check for equal object. */
+ if (src[j].subject == src[0].subject) {
+ value = zval.score*src[j].weight;
+ zunionInterAggregate(&score,value,aggregate);
+ } else if (zuiFind(&src[j],&zval,&value)) {
value *= src[j].weight;
zunionInterAggregate(&score,value,aggregate);
} else {
}
} else if (op == REDIS_OP_UNION) {
for (i = 0; i < setnum; i++) {
- if (zuiLength(&src[0]) == 0)
+ if (zuiLength(&src[i]) == 0)
continue;
while (zuiNext(&src[i],&zval)) {
/* Because the inputs are sorted by size, it's only possible
* for sets at larger indices to hold this element. */
for (j = (i+1); j < setnum; j++) {
- if (zuiFind(&src[j],&zval,&value)) {
+ /* It is not safe to access the zset we are
+ * iterating, so explicitly check for equal object. */
+ if(src[j].subject == src[i].subject) {
+ value = zval.score*src[j].weight;
+ zunionInterAggregate(&score,value,aggregate);
+ } else if (zuiFind(&src[j],&zval,&value)) {
value *= src[j].weight;
zunionInterAggregate(&score,value,aggregate);
}
/* Convert to ziplist when in limits. */
if (dstzset->zsl->length <= server.zset_max_ziplist_entries &&
maxelelen <= server.zset_max_ziplist_value)
- zsConvert(dstobj,REDIS_ENCODING_ZIPLIST);
+ zsetConvert(dstobj,REDIS_ENCODING_ZIPLIST);
dbAdd(c->db,dstkey,dstobj);
- addReplyLongLong(c,zsLength(dstobj));
+ addReplyLongLong(c,zsetLength(dstobj));
if (!touched) signalModifiedKey(c->db,dstkey);
server.dirty++;
} else {
|| checkType(c,zobj,REDIS_ZSET)) return;
/* Sanitize indexes. */
- llen = zsLength(zobj);
+ llen = zsetLength(zobj);
if (start < 0) start = llen+start;
if (end < 0) end = llen+end;
if (start < 0) start = 0;
zzlNext(zl,&eptr,&sptr);
}
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
zskiplist *zsl = zs->zsl;
zskiplistNode *ln;
/* If reversed, get the last node in range as starting point. */
if (reverse)
- eptr = zzlLastInRange(zobj,range);
+ eptr = zzlLastInRange(zl,range);
else
- eptr = zzlFirstInRange(zobj,range);
+ eptr = zzlFirstInRange(zl,range);
/* No "first" element in the specified interval. */
if (eptr == NULL) {
else
zzlNext(zl,&eptr,&sptr);
}
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
zskiplist *zsl = zs->zsl;
zskiplistNode *ln;
if ((zobj = lookupKeyReadOrReply(c,key,shared.czero)) == NULL ||
checkType(c,zobj,REDIS_ZSET)) return;
- addReplyLongLong(c,zsLength(zobj));
+ addReplyLongLong(c,zsetLength(zobj));
}
void zscoreCommand(redisClient *c) {
checkType(c,zobj,REDIS_ZSET)) return;
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
- if (zzlFind(zobj,c->argv[2],&score) != NULL)
+ if (zzlFind(zobj->ptr,c->argv[2],&score) != NULL)
addReplyDouble(c,score);
else
addReply(c,shared.nullbulk);
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
dictEntry *de;
if ((zobj = lookupKeyReadOrReply(c,key,shared.nullbulk)) == NULL ||
checkType(c,zobj,REDIS_ZSET)) return;
- llen = zsLength(zobj);
+ llen = zsetLength(zobj);
redisAssert(ele->encoding == REDIS_ENCODING_RAW);
if (zobj->encoding == REDIS_ENCODING_ZIPLIST) {
} else {
addReply(c,shared.nullbulk);
}
- } else if (zobj->encoding == REDIS_ENCODING_RAW) {
+ } else if (zobj->encoding == REDIS_ENCODING_SKIPLIST) {
zset *zs = zobj->ptr;
zskiplist *zsl = zs->zsl;
dictEntry *de;
projects / redis.git / blobdiff