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dragonwell8_jdk
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430f1bd4
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dragonwell8_jdk
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前往新版Gitcode,体验更适合开发者的 AI 搜索 >>
提交
430f1bd4
编写于
4月 17, 2012
作者:
A
amenkov
浏览文件
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差异文件
Merge
上级
e5d2703a
cf559fb3
变更
1
隐藏空白更改
内联
并排
Showing
1 changed file
with
14 addition
and
14 deletion
+14
-14
src/share/classes/sun/awt/AppContext.java
src/share/classes/sun/awt/AppContext.java
+14
-14
未找到文件。
src/share/classes/sun/awt/AppContext.java
浏览文件 @
430f1bd4
...
...
@@ -46,6 +46,7 @@ import sun.util.logging.PlatformLogger;
import
java.util.concurrent.locks.Condition
;
import
java.util.concurrent.locks.Lock
;
import
java.util.concurrent.locks.ReentrantLock
;
import
java.util.concurrent.atomic.AtomicInteger
;
/**
* The AppContext is a table referenced by ThreadGroup which stores
...
...
@@ -194,6 +195,15 @@ public final class AppContext {
return
isDisposed
;
}
/*
* The total number of AppContexts, system-wide. This number is
* incremented at the beginning of the constructor, and decremented
* at the end of dispose(). getAppContext() checks to see if this
* number is 1. If so, it returns the sole AppContext without
* checking Thread.currentThread().
*/
private
static
final
AtomicInteger
numAppContexts
=
new
AtomicInteger
(
0
);
static
{
// On the main Thread, we get the ThreadGroup, make a corresponding
// AppContext, and instantiate the Java EventQueue. This way, legacy
...
...
@@ -209,21 +219,11 @@ public final class AppContext {
parentThreadGroup
=
currentThreadGroup
.
getParent
();
}
mainAppContext
=
new
AppContext
(
currentThreadGroup
);
numAppContexts
=
1
;
return
null
;
}
});
}
/*
* The total number of AppContexts, system-wide. This number is
* incremented at the beginning of the constructor, and decremented
* at the end of dispose(). getAppContext() checks to see if this
* number is 1. If so, it returns the sole AppContext without
* checking Thread.currentThread().
*/
private
static
volatile
int
numAppContexts
;
/*
* The context ClassLoader that was used to create this AppContext.
*/
...
...
@@ -243,7 +243,7 @@ public final class AppContext {
* @since 1.2
*/
AppContext
(
ThreadGroup
threadGroup
)
{
numAppContexts
++
;
numAppContexts
.
incrementAndGet
()
;
this
.
threadGroup
=
threadGroup
;
threadGroup2appContext
.
put
(
threadGroup
,
this
);
...
...
@@ -278,7 +278,7 @@ public final class AppContext {
* @since 1.2
*/
public
final
static
AppContext
getAppContext
()
{
if
(
numAppContexts
==
1
)
// If there's only one system-wide,
if
(
numAppContexts
.
get
()
==
1
)
// If there's only one system-wide,
return
mainAppContext
;
// return the main system AppContext.
AppContext
appContext
=
threadAppContext
.
get
();
...
...
@@ -513,7 +513,7 @@ public final class AppContext {
this
.
table
.
clear
();
// Clear out the Hashtable to ease garbage collection
}
numAppContexts
--
;
numAppContexts
.
decrementAndGet
()
;
mostRecentKeyValue
=
null
;
}
...
...
@@ -804,7 +804,7 @@ public final class AppContext {
return
getAppContext
().
isDisposed
();
}
public
boolean
isMainAppContext
()
{
return
(
numAppContexts
==
1
);
return
(
numAppContexts
.
get
()
==
1
);
}
});
}
...
...
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