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dragonwell11
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2376d0bc
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dragonwell11
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2376d0bc
编写于
13年前
作者:
D
dl
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电子邮件补丁
差异文件
7091003: ScheduledExecutorService never executes Runnable with corePoolSize of zero
Reviewed-by: dholmes, chegar
上级
b80f5552
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
97 addition
and
2 deletion
+97
-2
jdk/src/share/classes/java/util/concurrent/ScheduledThreadPoolExecutor.java
...ses/java/util/concurrent/ScheduledThreadPoolExecutor.java
+2
-2
jdk/src/share/classes/java/util/concurrent/ThreadPoolExecutor.java
...hare/classes/java/util/concurrent/ThreadPoolExecutor.java
+12
-0
jdk/test/java/util/concurrent/ScheduledThreadPoolExecutor/ZeroCorePoolSize.java
...current/ScheduledThreadPoolExecutor/ZeroCorePoolSize.java
+83
-0
未找到文件。
jdk/src/share/classes/java/util/concurrent/ScheduledThreadPoolExecutor.java
浏览文件 @
2376d0bc
...
...
@@ -330,7 +330,7 @@ public class ScheduledThreadPoolExecutor
remove
(
task
))
task
.
cancel
(
false
);
else
prestartCoreThread
();
ensurePrestart
();
}
}
...
...
@@ -346,7 +346,7 @@ public class ScheduledThreadPoolExecutor
if
(!
canRunInCurrentRunState
(
true
)
&&
remove
(
task
))
task
.
cancel
(
false
);
else
prestartCoreThread
();
ensurePrestart
();
}
}
...
...
This diff is collapsed.
Click to expand it.
jdk/src/share/classes/java/util/concurrent/ThreadPoolExecutor.java
浏览文件 @
2376d0bc
...
...
@@ -1545,6 +1545,18 @@ public class ThreadPoolExecutor extends AbstractExecutorService {
addWorker
(
null
,
true
);
}
/**
* Same as prestartCoreThread except arranges that at least one
* thread is started even if corePoolSize is 0.
*/
void
ensurePrestart
()
{
int
wc
=
workerCountOf
(
ctl
.
get
());
if
(
wc
<
corePoolSize
)
addWorker
(
null
,
true
);
else
if
(
wc
==
0
)
addWorker
(
null
,
false
);
}
/**
* Starts all core threads, causing them to idly wait for work. This
* overrides the default policy of starting core threads only when
...
...
This diff is collapsed.
Click to expand it.
jdk/test/java/util/concurrent/ScheduledThreadPoolExecutor/ZeroCorePoolSize.java
0 → 100644
浏览文件 @
2376d0bc
/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 7091003
* @summary ScheduledExecutorService never executes Runnable
* with corePoolSize of zero
* @author Chris Hegarty
*/
import
java.util.concurrent.ScheduledThreadPoolExecutor
;
import
java.util.concurrent.TimeUnit
;
/**
* Verify that tasks can be run even with a core pool size of 0.
*/
public
class
ZeroCorePoolSize
{
volatile
boolean
taskRun
;
void
test
(
String
[]
args
)
throws
Throwable
{
ScheduledThreadPoolExecutor
pool
=
new
ScheduledThreadPoolExecutor
(
0
);
Runnable
task
=
new
Runnable
()
{
public
void
run
()
{
taskRun
=
true
;
}
};
check
(
pool
.
getCorePoolSize
()
==
0
);
pool
.
schedule
(
task
,
1
,
TimeUnit
.
SECONDS
);
pool
.
shutdown
();
check
(
pool
.
awaitTermination
(
20L
,
TimeUnit
.
SECONDS
));
check
(
pool
.
getCorePoolSize
()
==
0
);
check
(
taskRun
);
}
//--------------------- Infrastructure ---------------------------
volatile
int
passed
=
0
,
failed
=
0
;
void
pass
()
{
passed
++;}
void
fail
()
{
failed
++;
Thread
.
dumpStack
();}
void
fail
(
String
msg
)
{
System
.
err
.
println
(
msg
);
fail
();}
void
unexpected
(
Throwable
t
)
{
failed
++;
t
.
printStackTrace
();}
void
check
(
boolean
cond
)
{
if
(
cond
)
pass
();
else
fail
();}
void
equal
(
Object
x
,
Object
y
)
{
if
(
x
==
null
?
y
==
null
:
x
.
equals
(
y
))
pass
();
else
fail
(
x
+
" not equal to "
+
y
);}
public
static
void
main
(
String
[]
args
)
throws
Throwable
{
new
ZeroCorePoolSize
().
instanceMain
(
args
);}
void
instanceMain
(
String
[]
args
)
throws
Throwable
{
try
{
test
(
args
);}
catch
(
Throwable
t
)
{
unexpected
(
t
);}
System
.
out
.
printf
(
"%nPassed = %d, failed = %d%n%n"
,
passed
,
failed
);
if
(
failed
>
0
)
throw
new
AssertionError
(
"Some tests failed"
);}
abstract
class
F
{
abstract
void
f
()
throws
Throwable
;}
void
THROWS
(
Class
<?
extends
Throwable
>
k
,
F
...
fs
)
{
for
(
F
f
:
fs
)
try
{
f
.
f
();
fail
(
"Expected "
+
k
.
getName
()
+
" not thrown"
);}
catch
(
Throwable
t
)
{
if
(
k
.
isAssignableFrom
(
t
.
getClass
()))
pass
();
else
unexpected
(
t
);}}
}
This diff is collapsed.
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