Replace all usage of ziplist with listpack for t_zset (#9366)

Part two of implementing #8702 (zset), after #8887.

## Description of the feature
Replaced all uses of ziplist with listpack in t_zset, and optimized some of the code to optimize performance.

## Rdb format changes
New `RDB_TYPE_ZSET_LISTPACK` rdb type.

## Rdb loading improvements:
1) Pre-expansion of dict for validation of duplicate data for listpack and ziplist.
2) Simplifying the release of empty key objects when RDB loading.
3) Unify ziplist and listpack data verify methods for zset and hash, and move code to rdb.c.

## Interface changes
1) New `zset-max-listpack-entries` config is an alias for `zset-max-ziplist-entries` (same with `zset-max-listpack-value`).
2) OBJECT ENCODING will return listpack instead of ziplist.

## Listpack improvements:
1) Add `lpDeleteRange` and `lpDeleteRangeWithEntry` functions to delete a range of entries from listpack.
2) Improve the performance of `lpCompare`, converting from string to integer is faster than converting from integer to string.
3) Replace `snprintf` with `ll2string` to improve performance in converting numbers to strings in `lpGet()`.

## Zset improvements:
1) Improve the performance of `zzlFind` method, use `lpFind` instead of `lpCompare` in a loop.
2) Use `lpDeleteRangeWithEntry` instead of `lpDelete` twice to delete a element of zset.

## Tests
1) Add some unittests for `lpDeleteRange` and `lpDeleteRangeWithEntry` function.
2) Add zset RDB loading test.
3) Add benchmark test for `lpCompare` and `ziplsitCompare`.
4) Add empty listpack zset corrupt dump test.

1 files changed, 4 insertions, 5 deletions

diff --git a/src/geo.c b/src/geo.c
index 8c541bcfa..507a287c6 100644
--- a/src/geo.c
+++ b/src/geo.c
@@ -259,7 +259,7 @@ int geoGetPointsInRange(robj *zobj, double min, double max, GeoShape *shape, geo
     size_t origincount = ga->used;
     sds member;
 
-    if (zobj->encoding == OBJ_ENCODING_ZIPLIST) {
+    if (zobj->encoding == OBJ_ENCODING_LISTPACK) {
         unsigned char *zl = zobj->ptr;
         unsigned char *eptr, *sptr;
         unsigned char *vstr = NULL;
@@ -272,7 +272,7 @@ int geoGetPointsInRange(robj *zobj, double min, double max, GeoShape *shape, geo
             return 0;
         }
 
-        sptr = ziplistNext(zl, eptr);
+        sptr = lpNext(zl, eptr);
         while (eptr) {
             score = zzlGetScore(sptr);
 
@@ -280,8 +280,7 @@ int geoGetPointsInRange(robj *zobj, double min, double max, GeoShape *shape, geo
             if (!zslValueLteMax(score, &range))
                 break;
 
-            /* We know the element exists. ziplistGet should always succeed */
-            ziplistGet(eptr, &vstr, &vlen, &vlong);
+            vstr = lpGetValue(eptr, &vlen, &vlong);
             member = (vstr == NULL) ? sdsfromlonglong(vlong) :
                                       sdsnewlen(vstr,vlen);
             if (geoAppendIfWithinShape(ga,shape,score,member)
@@ -819,7 +818,7 @@ void georadiusGeneric(client *c, int srcKeyIndex, int flags) {
         }
 
         if (returned_items) {
-            zsetConvertToZiplistIfNeeded(zobj,maxelelen);
+            zsetConvertToListpackIfNeeded(zobj,maxelelen);
             setKey(c,c->db,storekey,zobj);
             decrRefCount(zobj);
             notifyKeyspaceEvent(NOTIFY_ZSET,flags & GEOSEARCH ? "geosearchstore" : "georadiusstore",storekey,