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Add a few comments to streamIteratorRemoveEntry().

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This commit is contained in:
antirez 2018-07-16 12:41:55 +02:00
parent a317f55d25
commit 103c5a1a3c
1 changed files with 4 additions and 0 deletions
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4
src/t_stream.c
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@ -705,10 +705,14 @@ void streamIteratorRemoveEntry(streamIterator *si, streamID *current) {
/* Change the valid/deleted entries count in the master entry. */ /* Change the valid/deleted entries count in the master entry. */
unsigned char *p = lpFirst(lp); unsigned char *p = lpFirst(lp);
aux = lpGetInteger(p); aux = lpGetInteger(p);
if (aux == 1) { if (aux == 1) {
/* If this is the last element in the listpack, we can remove the whole
* node. */
lpFree(lp); lpFree(lp);
raxRemove(si->stream->rax,si->ri.key,si->ri.key_len,NULL); raxRemove(si->stream->rax,si->ri.key,si->ri.key_len,NULL);
} else { } else {
/* In the base case we alter the counters of valid/deleted entries. */
lp = lpReplaceInteger(lp,&p,aux-1); lp = lpReplaceInteger(lp,&p,aux-1);
p = lpNext(lp,p); /* Seek deleted field. */ p = lpNext(lp,p); /* Seek deleted field. */
aux = lpGetInteger(p); aux = lpGetInteger(p);