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dragonwell11
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8f1f9e82
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dragonwell11
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体验新版 GitCode,发现更多精彩内容 >>
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8f1f9e82
编写于
12月 02, 2014
作者:
I
iignatyev
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电子邮件补丁
差异文件
8066290: Port JDK-8066191 into hotspot
Reviewed-by: kvn
上级
1f2ef791
变更
1
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1 changed file
with
86 addition
and
0 deletion
+86
-0
hotspot/test/testlibrary/com/oracle/java/testlibrary/TimeLimitedRunner.java
...ibrary/com/oracle/java/testlibrary/TimeLimitedRunner.java
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hotspot/test/testlibrary/com/oracle/java/testlibrary/TimeLimitedRunner.java
0 → 100644
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8f1f9e82
/*
* Copyright (c) 2014, 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.
*/
package
com.oracle.java.testlibrary
;
import
java.util.Objects
;
import
java.util.concurrent.Callable
;
/**
* Auxiliary class to run target w/ given timeout.
*/
public
class
TimeLimitedRunner
implements
Callable
<
Void
>
{
private
final
long
stoptime
;
private
final
long
timeout
;
private
final
double
factor
;
private
final
Callable
<
Boolean
>
target
;
/**
* @param timeout a timeout. zero means no time limitation
* @param factor a multiplier used to estimate next iteration time
* @param target a target to run
* @throws NullPointerException if target is null
* @throws IllegalArgumentException if timeout is negative or
factor isn't positive
*/
public
TimeLimitedRunner
(
long
timeout
,
double
factor
,
Callable
<
Boolean
>
target
)
{
Objects
.
requireNonNull
(
target
,
"target must not be null"
);
if
(
timeout
<
0
)
{
throw
new
IllegalArgumentException
(
"timeout["
+
timeout
+
"] < 0"
);
}
if
(
factor
<=
0
d
)
{
throw
new
IllegalArgumentException
(
"factor["
+
factor
+
"] <= 0"
);
}
this
.
stoptime
=
System
.
currentTimeMillis
()
+
timeout
;
this
.
timeout
=
timeout
;
this
.
factor
=
factor
;
this
.
target
=
target
;
}
/**
* Runs @{linkplan target} while it returns true and timeout isn't exceeded
*/
@Override
public
Void
call
()
throws
Exception
{
long
maxDuration
=
0L
;
long
iterStart
=
System
.
currentTimeMillis
();
if
(
timeout
!=
0
&&
iterStart
>
stoptime
)
{
return
null
;
}
while
(
target
.
call
())
{
if
(
timeout
!=
0
)
{
long
iterDuration
=
System
.
currentTimeMillis
()
-
iterStart
;
maxDuration
=
Math
.
max
(
maxDuration
,
iterDuration
);
iterStart
=
System
.
currentTimeMillis
();
if
(
iterStart
+
(
maxDuration
*
factor
)
>
stoptime
)
{
System
.
out
.
println
(
"Not enough time to continue execution. "
+
"Interrupted."
);
break
;
}
}
}
return
null
;
}
}
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