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8a88c368
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redis
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体验新版 GitCode,发现更多精彩内容 >>
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8a88c368
编写于
12月 06, 2010
作者:
P
Pieter Noordhuis
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电子邮件补丁
差异文件
Check other blocked clients when value could not be pushed
上级
ac06fc01
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
55 addition
and
23 deletion
+55
-23
src/t_list.c
src/t_list.c
+41
-23
tests/unit/type/list.tcl
tests/unit/type/list.tcl
+14
-0
未找到文件。
src/t_list.c
浏览文件 @
8a88c368
...
...
@@ -780,35 +780,53 @@ void unblockClientWaitingData(redisClient *c) {
int
handleClientsWaitingListPush
(
redisClient
*
c
,
robj
*
key
,
robj
*
ele
)
{
struct
dictEntry
*
de
;
redisClient
*
receiver
;
list
*
l
;
int
numclients
;
list
*
clients
;
listNode
*
ln
;
robj
*
dstkey
,
*
dstobj
;
de
=
dictFind
(
c
->
db
->
blocking_keys
,
key
);
if
(
de
==
NULL
)
return
0
;
l
=
dictGetEntryVal
(
de
);
ln
=
listFirst
(
l
);
redisAssert
(
ln
!=
NULL
);
receiver
=
ln
->
value
;
robj
*
target
=
receiver
->
bpop
.
target
;
unblockClientWaitingData
(
receiver
);
if
(
target
==
NULL
)
{
/* BRPOP/BLPOP return a multi-bulk with the name
* of the popped list */
addReplyMultiBulkLen
(
receiver
,
2
);
addReplyBulk
(
receiver
,
key
);
addReplyBulk
(
receiver
,
ele
);
}
else
{
/* BRPOPLPUSH */
robj
*
dobj
=
lookupKeyWrite
(
receiver
->
db
,
target
);
if
(
dobj
&&
checkType
(
receiver
,
dobj
,
REDIS_LIST
))
return
0
;
rpoplpushHandlePush
(
receiver
,
target
,
dobj
,
ele
);
decrRefCount
(
target
);
clients
=
dictGetEntryVal
(
de
);
numclients
=
listLength
(
clients
);
/* Try to handle the push as long as there are clients waiting for a push.
* Note that "numclients" is used because the list of clients waiting for a
* push on "key" is deleted by unblockClient() when empty.
*
* This loop will have more than 1 iteration when there is a BRPOPLPUSH
* that cannot push the target list because it does not contain a list. If
* this happens, it simply tries the next client waiting for a push. */
while
(
numclients
--
)
{
ln
=
listFirst
(
clients
);
redisAssert
(
ln
!=
NULL
);
receiver
=
ln
->
value
;
dstkey
=
receiver
->
bpop
.
target
;
/* This should remove the first element of the "clients" list. */
unblockClientWaitingData
(
receiver
);
redisAssert
(
ln
!=
listFirst
(
clients
));
if
(
dstkey
==
NULL
)
{
/* BRPOP/BLPOP */
addReplyMultiBulkLen
(
receiver
,
2
);
addReplyBulk
(
receiver
,
key
);
addReplyBulk
(
receiver
,
ele
);
return
1
;
}
else
{
/* BRPOPLPUSH */
dstobj
=
lookupKeyWrite
(
receiver
->
db
,
dstkey
);
if
(
dstobj
&&
checkType
(
receiver
,
dstobj
,
REDIS_LIST
))
{
decrRefCount
(
dstkey
);
}
else
{
rpoplpushHandlePush
(
receiver
,
dstkey
,
dstobj
,
ele
);
decrRefCount
(
dstkey
);
return
1
;
}
}
}
return
1
;
return
0
;
}
int
getTimeoutFromObjectOrReply
(
redisClient
*
c
,
robj
*
object
,
time_t
*
timeout
)
{
...
...
tests/unit/type/list.tcl
浏览文件 @
8a88c368
...
...
@@ -191,6 +191,20 @@ start_server {
assert_equal
{
foo
}
[
r lrange blist 0 -1
]
}
test
"BRPOPLPUSH with multiple blocked clients"
{
set rd1
[
redis_deferring_client
]
set rd2
[
redis_deferring_client
]
r del blist target1 target2
r set target1 nolist
$rd1 brpoplpush blist target1 0
$rd2 brpoplpush blist target2 0
r lpush blist foo
assert_error
"ERR*wrong kind*"
{
$rd1
read
}
assert_equal
{
foo
}
[
$rd2
read
]
assert_equal
{
foo
}
[
r lrange target2 0 -1
]
}
test
"linked BRPOPLPUSH"
{
set rd1
[
redis_deferring_client
]
set rd2
[
redis_deferring_client
]
...
...
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