Skip to content
项目
群组
代码片段
帮助
正在加载...
帮助
为 GitLab 提交贡献
登录/注册
切换导航
H
h2database
项目
项目
详情
活动
周期分析
仓库
仓库
文件
提交
分支
标签
贡献者
分枝图
比较
统计图
议题
0
议题
0
列表
看板
标记
里程碑
合并请求
0
合并请求
0
CI / CD
CI / CD
流水线
作业
计划
统计图
Wiki
Wiki
代码片段
代码片段
成员
成员
折叠边栏
关闭边栏
活动
分枝图
统计图
创建新议题
作业
提交
议题看板
打开侧边栏
Administrator
h2database
Commits
9447abe0
提交
9447abe0
authored
6 年前
作者:
andrei
浏览文件
操作
浏览文件
下载
电子邮件补丁
差异文件
Look Ma, no more locks!
上级
05ad3781
全部展开
隐藏空白字符变更
内嵌
并排
正在显示
2 个修改的文件
包含
145 行增加
和
196 行删除
+145
-196
TransactionMap.java
h2/src/main/org/h2/mvstore/tx/TransactionMap.java
+73
-83
TransactionStore.java
h2/src/main/org/h2/mvstore/tx/TransactionStore.java
+72
-113
没有找到文件。
h2/src/main/org/h2/mvstore/tx/TransactionMap.java
浏览文件 @
9447abe0
...
...
@@ -10,9 +10,9 @@ import org.h2.mvstore.DataUtils;
import
org.h2.mvstore.MVMap
;
import
org.h2.mvstore.Page
;
import
org.h2.mvstore.type.DataType
;
import
java.util.BitSet
;
import
java.util.AbstractMap
;
import
java.util.BitSet
;
import
java.util.Iterator
;
import
java.util.Map
;
...
...
@@ -99,77 +99,72 @@ public class TransactionMap<K, V> {
*/
public
long
sizeAsLong
()
{
TransactionStore
store
=
transaction
.
store
;
store
.
rwLock
.
readLock
().
lock
();
try
{
MVMap
<
Long
,
Object
[]>
undo
=
transaction
.
store
.
undoLog
;
BitSet
committingTransactions
;
MVMap
.
RootReference
mapRootReference
;
MVMap
.
RootReference
undoLogRootReference
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
getRoot
();
undoLogRootReference
=
store
.
undoLog
.
getRoot
();
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
()
||
mapRootReference
!=
map
.
getRoot
());
MVMap
<
Long
,
Object
[]>
undo
=
transaction
.
store
.
undoLog
;
Page
undoRootPage
=
undoLogRootReference
.
root
;
long
undoLogSize
=
undoRootPage
.
getTotalCount
();
Page
mapRootPage
=
mapRootReference
.
root
;
long
size
=
mapRootPage
.
getTotalCount
();
if
(
undoLogSize
==
0
)
{
return
size
;
}
if
(
undoLogSize
>
size
)
{
// the undo log is larger than the map -
// count the entries of the map
size
=
0
;
Cursor
<
K
,
VersionedValue
>
cursor
=
map
.
cursor
(
null
);
while
(
cursor
.
hasNext
())
{
K
key
=
cursor
.
next
();
VersionedValue
data
=
cursor
.
getValue
();
data
=
getValue
(
mapRootPage
,
undoRootPage
,
key
,
readLogId
,
data
,
committingTransactions
);
if
(
data
!=
null
&&
data
.
value
!=
null
)
{
size
++;
}
BitSet
committingTransactions
;
MVMap
.
RootReference
mapRootReference
;
MVMap
.
RootReference
undoLogRootReference
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
getRoot
();
undoLogRootReference
=
store
.
undoLog
.
getRoot
();
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
()
||
mapRootReference
!=
map
.
getRoot
());
Page
undoRootPage
=
undoLogRootReference
.
root
;
long
undoLogSize
=
undoRootPage
.
getTotalCount
();
Page
mapRootPage
=
mapRootReference
.
root
;
long
size
=
mapRootPage
.
getTotalCount
();
if
(
undoLogSize
==
0
)
{
return
size
;
}
if
(
undoLogSize
>
size
)
{
// the undo log is larger than the map -
// count the entries of the map
size
=
0
;
Cursor
<
K
,
VersionedValue
>
cursor
=
map
.
cursor
(
null
);
while
(
cursor
.
hasNext
())
{
K
key
=
cursor
.
next
();
VersionedValue
data
=
cursor
.
getValue
();
data
=
getValue
(
mapRootPage
,
undoRootPage
,
key
,
readLogId
,
data
,
committingTransactions
);
if
(
data
!=
null
&&
data
.
value
!=
null
)
{
size
++;
}
return
size
;
}
// the undo log is smaller than the map -
// scan the undo log and subtract invisible entries
MVMap
<
Object
,
Integer
>
temp
=
transaction
.
store
.
createTempMap
();
try
{
Cursor
cursor
=
new
Cursor
<
Long
,
Object
[]>(
undoRootPage
,
null
);
while
(
cursor
.
hasNext
())
{
cursor
.
next
();
Object
[]
op
=
(
Object
[])
cursor
.
getValue
();
int
m
=
(
Integer
)
op
[
0
];
if
(
m
!=
mapId
)
{
// a different map - ignore
continue
;
}
@SuppressWarnings
(
"unchecked"
)
K
key
=
(
K
)
op
[
1
];
VersionedValue
data
=
map
.
get
(
mapRootPage
,
key
);
data
=
getValue
(
mapRootPage
,
undoRootPage
,
key
,
readLogId
,
data
,
committingTransactions
);
if
(
data
==
null
||
data
.
value
==
null
)
{
Integer
old
=
temp
.
put
(
key
,
1
);
// count each key only once (there might be
// multiple
// changes for the same key)
if
(
old
==
null
)
{
size
--;
}
return
size
;
}
// the undo log is smaller than the map -
// scan the undo log and subtract invisible entries
MVMap
<
Object
,
Integer
>
temp
=
transaction
.
store
.
createTempMap
();
try
{
Cursor
cursor
=
new
Cursor
<
Long
,
Object
[]>(
undoRootPage
,
null
);
while
(
cursor
.
hasNext
())
{
cursor
.
next
();
Object
[]
op
=
(
Object
[])
cursor
.
getValue
();
int
m
=
(
Integer
)
op
[
0
];
if
(
m
!=
mapId
)
{
// a different map - ignore
continue
;
}
@SuppressWarnings
(
"unchecked"
)
K
key
=
(
K
)
op
[
1
];
VersionedValue
data
=
map
.
get
(
mapRootPage
,
key
);
data
=
getValue
(
mapRootPage
,
undoRootPage
,
key
,
readLogId
,
data
,
committingTransactions
);
if
(
data
==
null
||
data
.
value
==
null
)
{
Integer
old
=
temp
.
put
(
key
,
1
);
// count each key only once (there might be
// multiple
// changes for the same key)
if
(
old
==
null
)
{
size
--;
}
}
}
finally
{
transaction
.
store
.
store
.
removeMap
(
temp
);
}
return
size
;
}
finally
{
transaction
.
store
.
rwLock
.
readLock
().
unlock
(
);
transaction
.
store
.
store
.
removeMap
(
temp
);
}
return
size
;
}
/**
...
...
@@ -420,25 +415,20 @@ public class TransactionMap<K, V> {
private
VersionedValue
getValue
(
K
key
,
long
maxLog
)
{
TransactionStore
store
=
transaction
.
store
;
store
.
rwLock
.
readLock
().
lock
();
try
{
BitSet
committingTransactions
;
MVMap
.
RootReference
mapRootReference
;
MVMap
.
RootReference
undoLogRootReference
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
getRoot
();
undoLogRootReference
=
store
.
undoLog
.
getRoot
();
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
()
||
mapRootReference
!=
map
.
getRoot
());
Page
undoRootPage
=
undoLogRootReference
.
root
;
Page
mapRootPage
=
mapRootReference
.
root
;
VersionedValue
data
=
map
.
get
(
mapRootPage
,
key
);
return
getValue
(
mapRootPage
,
undoRootPage
,
key
,
maxLog
,
data
,
store
.
committingTransactions
.
get
());
}
finally
{
store
.
rwLock
.
readLock
().
unlock
();
}
BitSet
committingTransactions
;
MVMap
.
RootReference
mapRootReference
;
MVMap
.
RootReference
undoLogRootReference
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
getRoot
();
undoLogRootReference
=
store
.
undoLog
.
getRoot
();
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
()
||
mapRootReference
!=
map
.
getRoot
());
Page
undoRootPage
=
undoLogRootReference
.
root
;
Page
mapRootPage
=
mapRootReference
.
root
;
VersionedValue
data
=
map
.
get
(
mapRootPage
,
key
);
return
getValue
(
mapRootPage
,
undoRootPage
,
key
,
maxLog
,
data
,
store
.
committingTransactions
.
get
());
}
/**
...
...
This diff is collapsed.
Click to expand it.
h2/src/main/org/h2/mvstore/tx/TransactionStore.java
浏览文件 @
9447abe0
差异被折叠。
点击展开。
编写
预览
Markdown
格式
0%
重试
或
添加新文件
添加附件
取消
您添加了
0
人
到此讨论。请谨慎行事。
请先完成此评论的编辑!
取消
请
注册
或者
登录
后发表评论