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java8-tutorial
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a636658e
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提交
a636658e
编写于
4月 21, 2015
作者:
B
Benjamin Winterberg
浏览文件
操作
浏览文件
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差异文件
Merge remote-tracking branch 'origin/master'
上级
4a8a7e0a
fe20d0c0
变更
3
隐藏空白更改
内联
并排
Showing
3 changed file
with
154 addition
and
0 deletion
+154
-0
src/com/winterbe/java8/samples/concurrent/Lock4.java
src/com/winterbe/java8/samples/concurrent/Lock4.java
+59
-0
src/com/winterbe/java8/samples/concurrent/Lock5.java
src/com/winterbe/java8/samples/concurrent/Lock5.java
+56
-0
src/com/winterbe/java8/samples/concurrent/Lock6.java
src/com/winterbe/java8/samples/concurrent/Lock6.java
+39
-0
未找到文件。
src/com/winterbe/java8/samples/concurrent/Lock4.java
0 → 100644
浏览文件 @
a636658e
package
com.winterbe.java8.samples.concurrent
;
import
java.util.concurrent.ExecutorService
;
import
java.util.concurrent.Executors
;
import
java.util.concurrent.TimeUnit
;
import
java.util.concurrent.locks.StampedLock
;
/**
* @author Benjamin Winterberg
*/
public
class
Lock4
{
private
static
int
count
=
0
;
public
static
void
main
(
String
[]
args
)
{
ExecutorService
executor
=
Executors
.
newFixedThreadPool
(
2
);
StampedLock
lock
=
new
StampedLock
();
executor
.
submit
(()
->
{
long
stamp
=
lock
.
writeLock
();
try
{
count
++;
TimeUnit
.
SECONDS
.
sleep
(
1
);
}
catch
(
InterruptedException
e
)
{
throw
new
IllegalStateException
(
e
);
}
finally
{
lock
.
unlockWrite
(
stamp
);
}
});
executor
.
submit
(()
->
{
long
stamp
=
lock
.
readLock
();
try
{
System
.
out
.
println
(
Thread
.
currentThread
().
getName
()
+
": "
+
count
);
TimeUnit
.
SECONDS
.
sleep
(
1
);
}
catch
(
InterruptedException
e
)
{
throw
new
IllegalStateException
(
e
);
}
finally
{
lock
.
unlockRead
(
stamp
);
}
});
executor
.
submit
(()
->
{
long
stamp
=
lock
.
readLock
();
try
{
System
.
out
.
println
(
Thread
.
currentThread
().
getName
()
+
": "
+
count
);
TimeUnit
.
SECONDS
.
sleep
(
1
);
}
catch
(
InterruptedException
e
)
{
throw
new
IllegalStateException
(
e
);
}
finally
{
lock
.
unlockRead
(
stamp
);
}
});
ConcurrentUtils
.
stop
(
executor
);
}
}
src/com/winterbe/java8/samples/concurrent/Lock5.java
0 → 100644
浏览文件 @
a636658e
package
com.winterbe.java8.samples.concurrent
;
import
java.util.concurrent.ExecutorService
;
import
java.util.concurrent.Executors
;
import
java.util.concurrent.TimeUnit
;
import
java.util.concurrent.locks.StampedLock
;
/**
* @author Benjamin Winterberg
*/
public
class
Lock5
{
private
static
int
count
=
0
;
public
static
void
main
(
String
[]
args
)
{
ExecutorService
executor
=
Executors
.
newFixedThreadPool
(
2
);
StampedLock
lock
=
new
StampedLock
();
executor
.
submit
(()
->
{
long
stamp
=
lock
.
tryOptimisticRead
();
try
{
System
.
out
.
println
(
"Optimistic Lock Valid: "
+
lock
.
validate
(
stamp
));
TimeUnit
.
SECONDS
.
sleep
(
1
);
System
.
out
.
println
(
"Optimistic Lock Valid: "
+
lock
.
validate
(
stamp
));
}
catch
(
InterruptedException
e
)
{
throw
new
IllegalStateException
(
e
);
}
finally
{
lock
.
unlock
(
stamp
);
}
});
executor
.
submit
(()
->
{
long
stamp
=
lock
.
writeLock
();
try
{
System
.
out
.
println
(
"Write Lock acquired"
);
incrementAndSleep
(
2
);
}
finally
{
lock
.
unlock
(
stamp
);
System
.
out
.
println
(
"Write done"
);
}
});
ConcurrentUtils
.
stop
(
executor
);
}
private
static
void
incrementAndSleep
(
int
sleepSeconds
)
{
try
{
count
++;
TimeUnit
.
SECONDS
.
sleep
(
sleepSeconds
);
}
catch
(
InterruptedException
e
)
{
throw
new
IllegalStateException
(
e
);
}
}
}
src/com/winterbe/java8/samples/concurrent/Lock6.java
0 → 100644
浏览文件 @
a636658e
package
com.winterbe.java8.samples.concurrent
;
import
java.util.concurrent.ExecutorService
;
import
java.util.concurrent.Executors
;
import
java.util.concurrent.locks.StampedLock
;
/**
* @author Benjamin Winterberg
*/
public
class
Lock6
{
private
static
int
count
=
0
;
public
static
void
main
(
String
[]
args
)
{
ExecutorService
executor
=
Executors
.
newFixedThreadPool
(
2
);
StampedLock
lock
=
new
StampedLock
();
executor
.
submit
(()
->
{
long
stamp
=
lock
.
readLock
();
try
{
if
(
count
==
0
)
{
stamp
=
lock
.
tryConvertToWriteLock
(
stamp
);
if
(
stamp
==
0L
)
{
System
.
out
.
println
(
"Could not convert to write lock"
);
stamp
=
lock
.
writeLock
();
}
count
=
23
;
}
System
.
out
.
println
(
count
);
}
finally
{
lock
.
unlock
(
stamp
);
}
});
ConcurrentUtils
.
stop
(
executor
);
}
}
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