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49927650
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体验新版 GitCode,发现更多精彩内容 >>
提交
49927650
编写于
4月 28, 2015
作者:
P
Péter Szilágyi
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
p2p/discover: fix goroutine leak due to blocking on sync.Once
上级
437cf4b3
变更
2
隐藏空白更改
内联
并排
Showing
2 changed file
with
24 addition
and
13 deletion
+24
-13
p2p/discover/database.go
p2p/discover/database.go
+23
-12
p2p/discover/table.go
p2p/discover/table.go
+1
-1
未找到文件。
p2p/discover/database.go
浏览文件 @
49927650
...
...
@@ -177,23 +177,34 @@ func (db *nodeDB) updateNode(node *Node) error {
return
db
.
lvl
.
Put
(
makeKey
(
node
.
ID
,
nodeDBDiscoverRoot
),
blob
,
nil
)
}
// ensureExpirer is a small helper method ensuring that the data expiration
// mechanism is running. If the expiration goroutine is already running, this
// method simply returns.
//
// The goal is to start the data evacuation only after the network successfully
// bootstrapped itself (to prevent dumping potentially useful seed nodes). Since
// it would require significant overhead to exactly trace the first successful
// convergence, it's simpler to "ensure" the correct state when an appropriate
// condition occurs (i.e. a successful bonding), and discard further events.
func
(
db
*
nodeDB
)
ensureExpirer
()
{
db
.
runner
.
Do
(
func
()
{
go
db
.
expirer
()
})
}
// expirer should be started in a go routine, and is responsible for looping ad
// infinitum and dropping stale data from the database.
func
(
db
*
nodeDB
)
expirer
()
{
db
.
runner
.
Do
(
func
()
{
tick
:=
time
.
Tick
(
nodeDBCleanupCycle
)
for
{
select
{
case
<-
tick
:
if
err
:=
db
.
expireNodes
();
err
!=
nil
{
glog
.
V
(
logger
.
Error
)
.
Infof
(
"Failed to expire nodedb items: %v"
,
err
)
}
case
<-
db
.
quit
:
return
tick
:=
time
.
Tick
(
nodeDBCleanupCycle
)
for
{
select
{
case
<-
tick
:
if
err
:=
db
.
expireNodes
();
err
!=
nil
{
glog
.
V
(
logger
.
Error
)
.
Infof
(
"Failed to expire nodedb items: %v"
,
err
)
}
case
<-
db
.
quit
:
return
}
}
)
}
}
// expireNodes iterates over the database and deletes all nodes that have not
...
...
p2p/discover/table.go
浏览文件 @
49927650
...
...
@@ -335,7 +335,7 @@ func (tab *Table) ping(id NodeID, addr *net.UDPAddr) error {
}
// Pong received, update the database and return
tab
.
db
.
updateLastPong
(
id
,
time
.
Now
())
go
tab
.
db
.
e
xpirer
()
tab
.
db
.
ensureE
xpirer
()
return
nil
}
...
...
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