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fix description about ziplist, the code is ok (#6318)

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* fix description about ZIP_BIG_PREVLEN(the code is ok), it's similar to
antirez#4705

* fix description about ziplist entry encoding field (the code is ok),
the max length should be 2^32 - 1 when encoding is 5 bytes

(cherry picked from commit 67660881ed5b19a979425c37b3e8beea3349043c)
This commit is contained in:
jimgreen2013 2020-07-12 03:51:44 +08:00 committed by Oran Agra
parent 1acdc84d10
commit 1be6dbbdf6
1 changed files with 2 additions and 2 deletions
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4
src/ziplist.c
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@ -86,7 +86,7 @@
* |10000000|qqqqqqqq|rrrrrrrr|ssssssss|tttttttt| - 5 bytes
* String value with length greater than or equal to 16384 bytes.
* Only the 4 bytes following the first byte represents the length
* up to 32^2-1. The 6 lower bits of the first byte are not used and
* up to 2^32-1. The 6 lower bits of the first byte are not used and
* are set to zero.
* IMPORTANT: The 32 bit number is stored in big endian.
* |11000000| - 3 bytes
@ -194,7 +194,7 @@
#define ZIP_BIG_PREVLEN 254 /* Max number of bytes of the previous entry, for
the "prevlen" field prefixing each entry, to be
represented with just a single byte. Otherwise
it is represented as FF AA BB CC DD, where
it is represented as FE AA BB CC DD, where
AA BB CC DD are a 4 bytes unsigned integer
representing the previous entry len. */