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h2database
Commits
9cc5ebee
提交
9cc5ebee
authored
12月 23, 2018
作者:
Andrei Tokar
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电子邮件补丁
差异文件
Refactor code around append buffer locking
上级
5de4e30b
全部展开
隐藏空白字符变更
内嵌
并排
正在显示
4 个修改的文件
包含
66 行增加
和
123 行删除
+66
-123
MVMap.java
h2/src/main/org/h2/mvstore/MVMap.java
+50
-117
MVStore.java
h2/src/main/org/h2/mvstore/MVStore.java
+1
-1
MVRTreeMap.java
h2/src/main/org/h2/mvstore/rtree/MVRTreeMap.java
+1
-1
TransactionMap.java
h2/src/main/org/h2/mvstore/tx/TransactionMap.java
+14
-4
没有找到文件。
h2/src/main/org/h2/mvstore/MVMap.java
浏览文件 @
9cc5ebee
差异被折叠。
点击展开。
h2/src/main/org/h2/mvstore/MVStore.java
浏览文件 @
9cc5ebee
...
...
@@ -1400,7 +1400,7 @@ public class MVStore implements AutoCloseable {
try
{
ChunkIdsCollector
collector
=
new
ChunkIdsCollector
(
meta
.
getId
());
long
oldestVersionToKeep
=
getOldestVersionToKeep
();
MVMap
.
RootReference
rootReference
=
meta
.
g
etRoot
();
MVMap
.
RootReference
rootReference
=
meta
.
flushAndG
etRoot
();
if
(
fast
)
{
MVMap
.
RootReference
previous
;
while
(
rootReference
.
version
>=
oldestVersionToKeep
&&
(
previous
=
rootReference
.
previous
)
!=
null
)
{
...
...
h2/src/main/org/h2/mvstore/rtree/MVRTreeMap.java
浏览文件 @
9cc5ebee
...
...
@@ -134,7 +134,7 @@ public final class MVRTreeMap<V> extends MVMap<SpatialKey, V> {
int
attempt
=
0
;
while
(
true
)
{
++
attempt
;
RootReference
rootReference
=
g
etRoot
();
RootReference
rootReference
=
flushAndG
etRoot
();
Page
p
=
rootReference
.
root
.
copy
(
true
);
V
result
=
operate
(
p
,
key
,
value
,
decisionMaker
);
if
(!
p
.
isLeaf
()
&&
p
.
getTotalCount
()
==
0
)
{
...
...
h2/src/main/org/h2/mvstore/tx/TransactionMap.java
浏览文件 @
9cc5ebee
...
...
@@ -104,7 +104,7 @@ public class TransactionMap<K, V> extends AbstractMap<K, V> {
long
undoLogSize
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
g
etRoot
();
mapRootReference
=
map
.
flushAndG
etRoot
();
BitSet
opentransactions
=
store
.
openTransactions
.
get
();
undoLogRootReferences
=
new
MVMap
.
RootReference
[
opentransactions
.
length
()];
undoLogSize
=
0
;
...
...
@@ -113,7 +113,7 @@ public class TransactionMap<K, V> extends AbstractMap<K, V> {
if
(
undoLog
!=
null
)
{
MVMap
.
RootReference
rootReference
=
undoLog
.
getRoot
();
undoLogRootReferences
[
i
]
=
rootReference
;
undoLogSize
+=
rootReference
.
root
.
getTotalCount
()
+
rootReference
.
getAppendCounter
();
undoLogSize
+=
rootReference
.
getTotalCount
();
}
}
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
()
||
...
...
@@ -124,7 +124,7 @@ public class TransactionMap<K, V> extends AbstractMap<K, V> {
// should be considered as committed.
// Subsequent processing uses this snapshot info only.
Page
mapRootPage
=
mapRootReference
.
root
;
long
size
=
mapRoot
Pag
e
.
getTotalCount
();
long
size
=
mapRoot
Referenc
e
.
getTotalCount
();
// if we are looking at the map without any uncommitted values
if
(
undoLogSize
==
0
)
{
return
size
;
...
...
@@ -240,6 +240,16 @@ public class TransactionMap<K, V> extends AbstractMap<K, V> {
return
set
(
key
,
decisionMaker
);
}
/**
* Appends entry to uderlying map. This method may be used concurrently,
* but latest appended values are not guaranteed to be visible.
* @param key should be higher in map's order than any existing key
* @param value to be appended
*/
public
void
append
(
K
key
,
V
value
)
{
map
.
append
(
key
,
VersionedValue
.
getInstance
(
transaction
.
log
(
map
.
getId
(),
key
,
null
),
value
,
null
));
}
/**
* Lock row for the given key.
* <p>
...
...
@@ -678,7 +688,7 @@ public class TransactionMap<K, V> extends AbstractMap<K, V> {
MVMap
.
RootReference
mapRootReference
;
do
{
committingTransactions
=
store
.
committingTransactions
.
get
();
mapRootReference
=
map
.
g
etRoot
();
mapRootReference
=
map
.
flushAndG
etRoot
();
}
while
(
committingTransactions
!=
store
.
committingTransactions
.
get
());
// Now we have a snapshot, where mapRootReference points to state of the map
// and committingTransactions mask tells us which of seemingly uncommitted changes
...
...
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