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direct saving of specially encoded types implemented for lists and sets too

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This commit is contained in:
antirez 2011-02-28 17:53:47 +01:00
parent 0a04b5f5a0
commit 26117e84f0
1 changed files with 38 additions and 36 deletions
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74
src/rdb.c
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@ -256,27 +256,10 @@ int rdbSaveObject(FILE *fp, robj *o) {
} else if (o->type == REDIS_LIST) {
/* Save a list value */
if (o->encoding == REDIS_ENCODING_ZIPLIST) {
unsigned char *p;
unsigned char *vstr;
unsigned int vlen;
long long vlong;
size_t l = ziplistBlobLen((unsigned char*)o->ptr);
if ((n = rdbSaveLen(fp,ziplistLen(o->ptr))) == -1) return -1;
if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
nwritten += n;
p = ziplistIndex(o->ptr,0);
while(ziplistGet(p,&vstr,&vlen,&vlong)) {
if (vstr) {
if ((n = rdbSaveRawString(fp,vstr,vlen)) == -1)
return -1;
nwritten += n;
} else {
if ((n = rdbSaveLongLongAsStringObject(fp,vlong)) == -1)
return -1;
nwritten += n;
}
p = ziplistNext(o->ptr,p);
}
} else if (o->encoding == REDIS_ENCODING_LINKEDLIST) {
list *list = o->ptr;
listIter li;
@ -311,17 +294,10 @@ int rdbSaveObject(FILE *fp, robj *o) {
}
dictReleaseIterator(di);
} else if (o->encoding == REDIS_ENCODING_INTSET) {
intset *is = o->ptr;
int64_t llval;
int i = 0;
size_t l = intsetBlobLen((intset*)o->ptr);
if ((n = rdbSaveLen(fp,intsetLen(is))) == -1) return -1;
if ((n = rdbSaveRawString(fp,o->ptr,l)) == -1) return -1;
nwritten += n;
while(intsetGet(is,i++,&llval)) {
if ((n = rdbSaveLongLongAsStringObject(fp,llval)) == -1) return -1;
nwritten += n;
}
} else {
redisPanic("Unknown set encoding");
}
@ -831,20 +807,46 @@ robj *rdbLoadObject(int type, FILE *fp) {
dictAdd((dict*)o->ptr,key,val);
}
}
} else if (type == REDIS_HASH_ZIPMAP) {
} else if (type == REDIS_HASH_ZIPMAP ||
type == REDIS_LIST_ZIPLIST ||
type == REDIS_SET_INTSET)
{
robj *aux = rdbLoadStringObject(fp);
if (aux == NULL) return NULL;
o = createHashObject();
o->encoding = REDIS_ENCODING_ZIPMAP;
o = createObject(REDIS_STRING,NULL); /* string is just placeholder */
o->ptr = zmalloc(sdslen(aux->ptr));
memcpy(o->ptr,aux->ptr,sdslen(aux->ptr));
decrRefCount(aux);
/* Convert to real hash if the number of items is too large.
* We don't check the max item size as this requires an O(N)
* scan usually. */
if (zipmapLen(o->ptr) > server.hash_max_zipmap_entries) {
convertToRealHash(o);
/* Fix the object encoding, and make sure to convert the encoded
* data type into the base type if accordingly to the current
* configuration there are too many elements in the encoded data
* type. Note that we only check the length and not max element
* size as this is an O(N) scan. Eventually everything will get
* converted. */
switch(type) {
case REDIS_HASH_ZIPMAP:
o->type = REDIS_HASH;
o->encoding = REDIS_ENCODING_ZIPMAP;
if (zipmapLen(o->ptr) > server.hash_max_zipmap_entries)
convertToRealHash(o);
break;
case REDIS_LIST_ZIPLIST:
o->type = REDIS_LIST;
o->encoding = REDIS_ENCODING_ZIPLIST;
if (ziplistLen(o->ptr) > server.list_max_ziplist_entries)
listTypeConvert(o,REDIS_ENCODING_LINKEDLIST);
break;
case REDIS_SET_INTSET:
o->type = REDIS_SET;
o->encoding = REDIS_ENCODING_INTSET;
if (intsetLen(o->ptr) > server.set_max_intset_entries)
setTypeConvert(o,REDIS_ENCODING_HT);
break;
default:
redisPanic("Unknown enoding");
break;
}
} else {
redisPanic("Unknown object type");