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ruanhaishen
redis
Commits
6205b463
Commit
6205b463
authored
May 22, 2010
by
Pieter Noordhuis
Browse files
add function to retrieve length of ziplist
parent
aa549962
Changes
2
Hide whitespace changes
Inline
Side-by-side
ziplist.c
View file @
6205b463
...
...
@@ -388,6 +388,24 @@ unsigned int ziplistCompare(unsigned char *p, unsigned char *entry, unsigned int
}
}
/* Return length of ziplist. */
unsigned
int
ziplistLen
(
unsigned
char
*
zl
)
{
unsigned
int
len
=
0
;
if
(
ZIPLIST_LENGTH
(
zl
)
<
ZIP_BIGLEN
)
{
len
=
ZIPLIST_LENGTH
(
zl
);
}
else
{
unsigned
char
*
p
=
zl
+
ZIPLIST_HEADER_SIZE
;
while
(
*
p
!=
ZIP_END
)
{
p
+=
zipRawEntryLength
(
p
);
len
++
;
}
/* Re-store length if small enough */
if
(
len
<
ZIP_BIGLEN
)
ZIPLIST_LENGTH
(
zl
)
=
len
;
}
return
len
;
}
void
ziplistRepr
(
unsigned
char
*
zl
)
{
unsigned
char
*
p
,
encoding
;
unsigned
int
l
,
lsize
;
...
...
ziplist.h
View file @
6205b463
...
...
@@ -9,4 +9,5 @@ unsigned char *ziplistNext(unsigned char *p);
unsigned
int
ziplistGet
(
unsigned
char
*
p
,
unsigned
char
**
e
,
unsigned
int
*
elen
,
long
long
*
v
);
unsigned
char
*
ziplistDelete
(
unsigned
char
*
zl
,
unsigned
char
**
p
);
unsigned
char
*
ziplistDeleteRange
(
unsigned
char
*
zl
,
unsigned
int
index
,
unsigned
int
num
);
unsigned
int
ziplistCompare
(
unsigned
char
*
p
,
unsigned
char
*
entry
,
unsigned
int
elen
);
\ No newline at end of file
unsigned
int
ziplistCompare
(
unsigned
char
*
p
,
unsigned
char
*
entry
,
unsigned
int
elen
);
unsigned
int
ziplistLen
(
unsigned
char
*
zl
);
\ No newline at end of file
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