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TDengine
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48be5788
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TDengine
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体验新版 GitCode,发现更多精彩内容 >>
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48be5788
编写于
5月 15, 2020
作者:
S
Shengliang Guan
提交者:
GitHub
5月 15, 2020
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差异文件
Merge pull request #1925 from taosdata/patch/skiplist-duplicate-key
skiplist support duplicate key
上级
f3531070
a6534288
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
183 addition
and
135 deletion
+183
-135
src/util/inc/tskiplist.h
src/util/inc/tskiplist.h
+5
-6
src/util/src/tskiplist.c
src/util/src/tskiplist.c
+139
-111
src/util/tests/skiplistTest.cpp
src/util/tests/skiplistTest.cpp
+39
-18
未找到文件。
src/util/inc/tskiplist.h
浏览文件 @
48be5788
...
@@ -174,7 +174,7 @@ void tSkipListNewNodeInfo(SSkipList *pSkipList, int32_t *level, int32_t *headSiz
...
@@ -174,7 +174,7 @@ void tSkipListNewNodeInfo(SSkipList *pSkipList, int32_t *level, int32_t *headSiz
SSkipListNode
*
tSkipListPut
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
SSkipListNode
*
tSkipListPut
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
/**
/**
* get
only *one* node of which key is equalled to pKey, even there are more than one nodes are of the same k
ey
* get
*all* nodes which key are equivalent to pK
ey
*
*
* @param pSkipList
* @param pSkipList
* @param pKey
* @param pKey
...
@@ -234,14 +234,13 @@ SSkipListNode *tSkipListIterGet(SSkipListIterator *iter);
...
@@ -234,14 +234,13 @@ SSkipListNode *tSkipListIterGet(SSkipListIterator *iter);
void
*
tSkipListDestroyIter
(
SSkipListIterator
*
iter
);
void
*
tSkipListDestroyIter
(
SSkipListIterator
*
iter
);
/*
/*
* remove
only one node
of the pKey value.
* remove
nodes
of the pKey value.
* If more than one node has the same value, a
ny one
will be removed
* If more than one node has the same value, a
ll
will be removed
*
*
* @Return
* @Return
* true: one node has been removed
* the count of removed nodes
* false: no node has been removed
*/
*/
bool
tSkipListRemove
(
SSkipList
*
pSkipList
,
SSkipListKey
key
);
uint32_t
tSkipListRemove
(
SSkipList
*
pSkipList
,
SSkipListKey
key
);
/*
/*
* remove the specified node in parameters
* remove the specified node in parameters
...
...
src/util/src/tskiplist.c
浏览文件 @
48be5788
...
@@ -74,7 +74,47 @@ static void tSkipListDoInsert(SSkipList *pSkipList, SSkipListNode **forward, SSk
...
@@ -74,7 +74,47 @@ static void tSkipListDoInsert(SSkipList *pSkipList, SSkipListNode **forward, SSk
static
SSkipListNode
*
tSkipListPushBack
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
static
SSkipListNode
*
tSkipListPushBack
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
static
SSkipListNode
*
tSkipListPushFront
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
static
SSkipListNode
*
tSkipListPushFront
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
);
static
SSkipListIterator
*
doCreateSkipListIterator
(
SSkipList
*
pSkipList
,
int32_t
order
);
static
SSkipListIterator
*
doCreateSkipListIterator
(
SSkipList
*
pSkipList
,
int32_t
order
);
static
SSkipListNode
*
tSkipListDoGet
(
SSkipList
*
pSkipList
,
SSkipListKey
key
);
// when order is TSDB_ORDER_ASC, return the last node with key less than val
// when order is TSDB_ORDER_DESC, return the first node with key large than val
static
SSkipListNode
*
getPriorNode
(
SSkipList
*
pSkipList
,
const
char
*
val
,
int32_t
order
)
{
__compar_fn_t
comparFn
=
pSkipList
->
comparFn
;
SSkipListNode
*
pNode
=
NULL
;
if
(
order
==
TSDB_ORDER_ASC
)
{
pNode
=
pSkipList
->
pHead
;
for
(
int32_t
i
=
pSkipList
->
level
-
1
;
i
>=
0
;
--
i
)
{
SSkipListNode
*
p
=
SL_GET_FORWARD_POINTER
(
pNode
,
i
);
while
(
p
!=
pSkipList
->
pTail
)
{
char
*
key
=
SL_GET_NODE_KEY
(
pSkipList
,
p
);
if
(
comparFn
(
key
,
val
)
<
0
)
{
pNode
=
p
;
p
=
SL_GET_FORWARD_POINTER
(
p
,
i
);
}
else
{
break
;
}
}
}
}
else
{
pNode
=
pSkipList
->
pTail
;
for
(
int32_t
i
=
pSkipList
->
level
-
1
;
i
>=
0
;
--
i
)
{
SSkipListNode
*
p
=
SL_GET_BACKWARD_POINTER
(
pNode
,
i
);
while
(
p
!=
pSkipList
->
pHead
)
{
char
*
key
=
SL_GET_NODE_KEY
(
pSkipList
,
p
);
if
(
comparFn
(
key
,
val
)
>
0
)
{
pNode
=
p
;
p
=
SL_GET_BACKWARD_POINTER
(
p
,
i
);
}
else
{
break
;
}
}
}
}
return
pNode
;
}
static
bool
initForwardBackwardPtr
(
SSkipList
*
pSkipList
)
{
static
bool
initForwardBackwardPtr
(
SSkipList
*
pSkipList
)
{
uint32_t
maxLevel
=
pSkipList
->
maxLevel
;
uint32_t
maxLevel
=
pSkipList
->
maxLevel
;
...
@@ -110,7 +150,11 @@ SSkipList *tSkipListCreate(uint8_t maxLevel, uint8_t keyType, uint8_t keyLen, ui
...
@@ -110,7 +150,11 @@ SSkipList *tSkipListCreate(uint8_t maxLevel, uint8_t keyType, uint8_t keyLen, ui
maxLevel
=
MAX_SKIP_LIST_LEVEL
;
maxLevel
=
MAX_SKIP_LIST_LEVEL
;
}
}
pSkipList
->
keyInfo
=
(
SSkipListKeyInfo
){.
type
=
keyType
,
.
len
=
keyLen
,
.
dupKey
=
dupKey
,
.
freeNode
=
freeNode
};
pSkipList
->
keyInfo
.
type
=
keyType
;
pSkipList
->
keyInfo
.
len
=
keyLen
;
pSkipList
->
keyInfo
.
dupKey
=
dupKey
;
pSkipList
->
keyInfo
.
freeNode
=
freeNode
;
pSkipList
->
keyFn
=
fn
;
pSkipList
->
keyFn
=
fn
;
pSkipList
->
comparFn
=
getKeyComparFunc
(
keyType
);
pSkipList
->
comparFn
=
getKeyComparFunc
(
keyType
);
pSkipList
->
maxLevel
=
maxLevel
;
pSkipList
->
maxLevel
=
maxLevel
;
...
@@ -240,13 +284,37 @@ SSkipListNode *tSkipListPut(SSkipList *pSkipList, SSkipListNode *pNode) {
...
@@ -240,13 +284,37 @@ SSkipListNode *tSkipListPut(SSkipList *pSkipList, SSkipListNode *pNode) {
return
pNode
;
return
pNode
;
}
}
SArray
*
tSkipListGet
(
SSkipList
*
pSkipList
,
SSkipListKey
key
)
{
SArray
*
tSkipListGet
(
SSkipList
*
pSkipList
,
SSkipListKey
key
)
{
SArray
*
sa
=
taosArrayInit
(
1
,
POINTER_BYTES
);
SArray
*
sa
=
taosArrayInit
(
1
,
POINTER_BYTES
);
SSkipListNode
*
pNode
=
tSkipListDoGet
(
pSkipList
,
key
);
taosArrayPush
(
sa
,
&
pNode
);
if
(
pSkipList
->
lock
)
{
pthread_rwlock_wrlock
(
pSkipList
->
lock
);
}
SSkipListNode
*
pNode
=
getPriorNode
(
pSkipList
,
key
,
TSDB_ORDER_ASC
);
while
(
1
)
{
SSkipListNode
*
p
=
SL_GET_FORWARD_POINTER
(
pNode
,
0
);
if
(
p
==
pSkipList
->
pTail
)
{
break
;
}
if
(
pSkipList
->
comparFn
(
key
,
SL_GET_NODE_KEY
(
pSkipList
,
p
))
!=
0
)
{
break
;
}
taosArrayPush
(
sa
,
&
p
);
pNode
=
p
;
}
if
(
pSkipList
->
lock
)
{
pthread_rwlock_unlock
(
pSkipList
->
lock
);
}
return
sa
;
return
sa
;
}
}
size_t
tSkipListGetSize
(
const
SSkipList
*
pSkipList
)
{
size_t
tSkipListGetSize
(
const
SSkipList
*
pSkipList
)
{
if
(
pSkipList
==
NULL
)
{
if
(
pSkipList
==
NULL
)
{
return
0
;
return
0
;
...
@@ -375,14 +443,52 @@ size_t tSkipListGetSize(const SSkipList* pSkipList) {
...
@@ -375,14 +443,52 @@ size_t tSkipListGetSize(const SSkipList* pSkipList) {
// return true;
// return true;
//}
//}
bool
tSkipListRemove
(
SSkipList
*
pSkipList
,
SSkipListKey
key
)
{
uint32_t
tSkipListRemove
(
SSkipList
*
pSkipList
,
SSkipListKey
key
)
{
SSkipListNode
*
pNode
=
tSkipListDoGet
(
pSkipList
,
key
)
;
uint32_t
count
=
0
;
if
(
pNode
!=
NULL
)
{
tSkipListRemoveNode
(
pSkipList
,
pNode
);
if
(
pSkipList
->
lock
)
{
return
true
;
pthread_rwlock_wrlock
(
pSkipList
->
lock
)
;
}
}
return
false
;
SSkipListNode
*
pNode
=
getPriorNode
(
pSkipList
,
key
,
TSDB_ORDER_ASC
);
while
(
1
)
{
SSkipListNode
*
p
=
SL_GET_FORWARD_POINTER
(
pNode
,
0
);
if
(
p
==
pSkipList
->
pTail
)
{
break
;
}
if
(
pSkipList
->
comparFn
(
key
,
SL_GET_NODE_KEY
(
pSkipList
,
p
))
!=
0
)
{
break
;
}
for
(
int32_t
j
=
p
->
level
-
1
;
j
>=
0
;
--
j
)
{
SSkipListNode
*
prev
=
SL_GET_BACKWARD_POINTER
(
p
,
j
);
SSkipListNode
*
next
=
SL_GET_FORWARD_POINTER
(
p
,
j
);
SL_GET_FORWARD_POINTER
(
prev
,
j
)
=
next
;
SL_GET_BACKWARD_POINTER
(
next
,
j
)
=
prev
;
}
if
(
pSkipList
->
keyInfo
.
freeNode
)
{
tfree
(
p
);
}
++
count
;
}
// compress the minimum level of skip list
while
(
pSkipList
->
level
>
0
)
{
if
(
SL_GET_FORWARD_POINTER
(
pSkipList
->
pHead
,
pSkipList
->
level
-
1
)
!=
NULL
)
{
break
;
}
pSkipList
->
level
--
;
}
pSkipList
->
size
-=
count
;
if
(
pSkipList
->
lock
)
{
pthread_rwlock_unlock
(
pSkipList
->
lock
);
}
return
count
;
}
}
void
tSkipListRemoveNode
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
)
{
void
tSkipListRemoveNode
(
SSkipList
*
pSkipList
,
SSkipListNode
*
pNode
)
{
...
@@ -425,54 +531,25 @@ SSkipListIterator* tSkipListCreateIter(SSkipList *pSkipList) {
...
@@ -425,54 +531,25 @@ SSkipListIterator* tSkipListCreateIter(SSkipList *pSkipList) {
}
}
SSkipListIterator
*
tSkipListCreateIterFromVal
(
SSkipList
*
pSkipList
,
const
char
*
val
,
int32_t
type
,
int32_t
order
)
{
SSkipListIterator
*
tSkipListCreateIterFromVal
(
SSkipList
*
pSkipList
,
const
char
*
val
,
int32_t
type
,
int32_t
order
)
{
if
(
pSkipList
==
NULL
)
{
return
NULL
;
}
assert
(
order
==
TSDB_ORDER_ASC
||
order
==
TSDB_ORDER_DESC
);
assert
(
order
==
TSDB_ORDER_ASC
||
order
==
TSDB_ORDER_DESC
);
assert
(
pSkipList
!=
NULL
);
SSkipListIterator
*
iter
=
doCreateSkipListIterator
(
pSkipList
,
order
);
if
(
val
==
NULL
)
{
if
(
val
==
NULL
)
{
return
doCreateSkipListIterator
(
pSkipList
,
order
);
}
else
{
SSkipListNode
*
forward
[
MAX_SKIP_LIST_LEVEL
]
=
{
0
};
int32_t
ret
=
-
1
;
__compar_fn_t
filterComparFn
=
getKeyComparFunc
(
pSkipList
->
keyInfo
.
type
);
SSkipListNode
*
pNode
=
pSkipList
->
pHead
;
for
(
int32_t
i
=
pSkipList
->
level
-
1
;
i
>=
0
;
--
i
)
{
SSkipListNode
*
p
=
SL_GET_FORWARD_POINTER
(
pNode
,
i
);
while
(
p
!=
pSkipList
->
pTail
)
{
char
*
key
=
SL_GET_NODE_KEY
(
pSkipList
,
p
);
if
((
ret
=
filterComparFn
(
key
,
val
))
<
0
)
{
pNode
=
p
;
p
=
SL_GET_FORWARD_POINTER
(
p
,
i
);
}
else
{
break
;
}
}
forward
[
i
]
=
pNode
;
}
SSkipListIterator
*
iter
=
doCreateSkipListIterator
(
pSkipList
,
order
);
// set the initial position
if
(
order
==
TSDB_ORDER_ASC
)
{
iter
->
cur
=
forward
[
0
];
// greater equals than the value
}
else
{
iter
->
cur
=
SL_GET_FORWARD_POINTER
(
forward
[
0
],
0
);
if
(
ret
==
0
)
{
assert
(
iter
->
cur
!=
pSkipList
->
pTail
);
iter
->
cur
=
SL_GET_FORWARD_POINTER
(
iter
->
cur
,
0
);
}
}
return
iter
;
return
iter
;
}
}
if
(
pSkipList
->
lock
)
{
pthread_rwlock_rdlock
(
pSkipList
->
lock
);
}
iter
->
cur
=
getPriorNode
(
pSkipList
,
val
,
order
);
if
(
pSkipList
->
lock
)
{
pthread_rwlock_unlock
(
pSkipList
->
lock
);
}
return
iter
;
}
}
bool
tSkipListIterNext
(
SSkipListIterator
*
iter
)
{
bool
tSkipListIterNext
(
SSkipListIterator
*
iter
)
{
...
@@ -487,17 +564,9 @@ bool tSkipListIterNext(SSkipListIterator *iter) {
...
@@ -487,17 +564,9 @@ bool tSkipListIterNext(SSkipListIterator *iter) {
}
}
if
(
iter
->
order
==
TSDB_ORDER_ASC
)
{
// ascending order iterate
if
(
iter
->
order
==
TSDB_ORDER_ASC
)
{
// ascending order iterate
if
(
iter
->
cur
==
NULL
)
{
iter
->
cur
=
SL_GET_FORWARD_POINTER
(
iter
->
cur
,
0
);
iter
->
cur
=
SL_GET_FORWARD_POINTER
(
pSkipList
->
pHead
,
0
);
}
else
{
iter
->
cur
=
SL_GET_FORWARD_POINTER
(
iter
->
cur
,
0
);
}
}
else
{
// descending order iterate
}
else
{
// descending order iterate
if
(
iter
->
cur
==
NULL
)
{
iter
->
cur
=
SL_GET_BACKWARD_POINTER
(
iter
->
cur
,
0
);
iter
->
cur
=
SL_GET_BACKWARD_POINTER
(
pSkipList
->
pTail
,
0
);
}
else
{
iter
->
cur
=
SL_GET_BACKWARD_POINTER
(
iter
->
cur
,
0
);
}
}
}
if
(
pSkipList
->
lock
)
{
if
(
pSkipList
->
lock
)
{
...
@@ -638,57 +707,16 @@ SSkipListNode* tSkipListPushBack(SSkipList *pSkipList, SSkipListNode *pNode) {
...
@@ -638,57 +707,16 @@ SSkipListNode* tSkipListPushBack(SSkipList *pSkipList, SSkipListNode *pNode) {
return
pNode
;
return
pNode
;
}
}
SSkipListNode
*
tSkipListDoGet
(
SSkipList
*
pSkipList
,
SSkipListKey
skey
)
{
SSkipListNode
*
pNode
=
pSkipList
->
pHead
;
SSkipListNode
*
pRes
=
NULL
;
if
(
pSkipList
->
lock
)
{
pthread_rwlock_rdlock
(
pSkipList
->
lock
);
}
#if SKIP_LIST_RECORD_PERFORMANCE
pSkipList
->
state
.
queryCount
++
;
#endif
__compar_fn_t
cmparFn
=
getComparFunc
(
pSkipList
->
keyInfo
.
type
,
0
);
int32_t
ret
=
-
1
;
for
(
int32_t
i
=
pSkipList
->
level
-
1
;
i
>=
0
;
--
i
)
{
SSkipListNode
*
p
=
SL_GET_FORWARD_POINTER
(
pNode
,
i
);
while
(
p
!=
pSkipList
->
pTail
)
{
char
*
key
=
SL_GET_NODE_KEY
(
pSkipList
,
p
);
if
((
ret
=
cmparFn
(
key
,
skey
))
<
0
)
{
pNode
=
p
;
p
=
SL_GET_FORWARD_POINTER
(
p
,
i
);
}
else
{
break
;
}
}
// find the qualified key
if
(
ret
==
0
)
{
pRes
=
SL_GET_FORWARD_POINTER
(
pNode
,
i
);
break
;
// skip list does not allowed duplicated key, abort further retrieve data
// if (!pSkipList->keyInfo.dupKey) {
// break;
// }
}
}
if
(
pSkipList
->
lock
)
{
pthread_rwlock_unlock
(
pSkipList
->
lock
);
}
return
pRes
;
}
SSkipListIterator
*
doCreateSkipListIterator
(
SSkipList
*
pSkipList
,
int32_t
order
)
{
SSkipListIterator
*
doCreateSkipListIterator
(
SSkipList
*
pSkipList
,
int32_t
order
)
{
SSkipListIterator
*
iter
=
calloc
(
1
,
sizeof
(
SSkipListIterator
));
SSkipListIterator
*
iter
=
calloc
(
1
,
sizeof
(
SSkipListIterator
));
iter
->
pSkipList
=
pSkipList
;
iter
->
pSkipList
=
pSkipList
;
iter
->
order
=
order
;
iter
->
order
=
order
;
if
(
order
==
TSDB_ORDER_ASC
)
{
iter
->
cur
=
pSkipList
->
pHead
;
}
else
{
iter
->
cur
=
pSkipList
->
pTail
;
}
return
iter
;
return
iter
;
}
}
\ No newline at end of file
src/util/tests/skiplistTest.cpp
浏览文件 @
48be5788
...
@@ -281,34 +281,55 @@ void skiplistPerformanceTest() {
...
@@ -281,34 +281,55 @@ void skiplistPerformanceTest() {
// todo not support duplicated key yet
// todo not support duplicated key yet
void
duplicatedKeyTest
()
{
void
duplicatedKeyTest
()
{
#if 0
SSkipList
*
pSkipList
=
tSkipListCreate
(
MAX_SKIP_LIST_LEVEL
,
TSDB_DATA_TYPE_INT
,
sizeof
(
int
),
true
,
false
,
true
,
getkey
);
SSkipListKey key;
key.nType = TSDB_DATA_TYPE_INT;
SSkipListNode **pNodes = NULL;
SSkipList *pSkipList = tSkipListCreate(MAX_SKIP_LIST_LEVEL, TSDB_DATA_TYPE_INT, sizeof(int));
for
(
int32_t
i
=
0
;
i
<
200
;
++
i
)
{
for (int32_t i = 0; i < 10000; ++i) {
for
(
int32_t
j
=
0
;
j
<
5
;
++
j
)
{
for
(
int32_t
j
=
0
;
j
<
5
;
++
j
)
{
key.i64Key = i;
int32_t
level
,
size
;
tSkipListPut(pSkipList, "", &key, 1);
tSkipListNewNodeInfo
(
pSkipList
,
&
level
,
&
size
);
SSkipListNode
*
d
=
(
SSkipListNode
*
)
calloc
(
1
,
size
+
sizeof
(
int32_t
));
d
->
level
=
level
;
int32_t
*
key
=
(
int32_t
*
)
SL_GET_NODE_KEY
(
pSkipList
,
d
);
key
[
0
]
=
i
;
tSkipListPut
(
pSkipList
,
d
);
}
}
}
}
tSkipListPrint(pSkipList, 1);
for
(
int32_t
i
=
0
;
i
<
100
;
++
i
)
{
for
(
int32_t
i
=
0
;
i
<
100
;
++
i
)
{
key.i64Key = rand() % 1000;
SSkipListKey
key
;
int32_t size = tSkipListGets(pSkipList, &key, &pNodes);
SArray
*
nodes
=
tSkipListGet
(
pSkipList
,
(
char
*
)(
&
i
));
assert
(
taosArrayGetSize
(
nodes
)
==
5
);
assert(size == 5);
taosArrayDestroy
(
nodes
);
}
tfree(pNodes);
int32_t
key
=
101
;
uint32_t
num
=
tSkipListRemove
(
pSkipList
,
(
char
*
)(
&
key
));
assert
(
num
==
5
);
SArray
*
nodes
=
tSkipListGet
(
pSkipList
,
(
char
*
)(
&
key
));
assert
(
taosArrayGetSize
(
nodes
)
==
0
);
taosArrayDestroy
(
nodes
);
key
=
102
;
SSkipListIterator
*
iter
=
tSkipListCreateIterFromVal
(
pSkipList
,
(
char
*
)(
&
key
),
TSDB_DATA_TYPE_INT
,
TSDB_ORDER_ASC
);
for
(
int
i
=
0
;
i
<
6
;
i
++
)
{
assert
(
tSkipListIterNext
(
iter
)
==
true
);
SSkipListNode
*
node
=
tSkipListIterGet
(
iter
);
int32_t
*
val
=
(
int32_t
*
)
SL_GET_NODE_KEY
(
pSkipList
,
node
);
assert
((
i
<
5
)
==
((
*
val
)
==
key
));
}
}
tSkipListDestroyIter
(
iter
);
iter
=
tSkipListCreateIterFromVal
(
pSkipList
,
(
char
*
)(
&
key
),
TSDB_DATA_TYPE_INT
,
TSDB_ORDER_DESC
);
for
(
int
i
=
0
;
i
<
6
;
i
++
)
{
assert
(
tSkipListIterNext
(
iter
)
==
true
);
SSkipListNode
*
node
=
tSkipListIterGet
(
iter
);
int32_t
*
val
=
(
int32_t
*
)
SL_GET_NODE_KEY
(
pSkipList
,
node
);
assert
((
i
<
5
)
==
((
*
val
)
==
key
));
}
tSkipListDestroyIter
(
iter
);
tSkipListDestroy
(
pSkipList
);
tSkipListDestroy
(
pSkipList
);
#endif
}
}
}
// namespace
}
// namespace
...
...
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