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algorithms/src/test/java/DeadLock.java at master · verifyCode/algorithms · GitHub
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DeadLock.java
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DeadLock.java
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import
java
.
lang
.
management
.
ManagementFactory
;
import
java
.
lang
.
management
.
ThreadMXBean
;
import
java
.
util
.
concurrent
.
Executors
;
import
java
.
util
.
concurrent
.
ScheduledExecutorService
;
/**
* @author xjn
* @since 2020-03-04
*/
public
class
DeadLock
{
private
static
Object
A
=
new
Object
();
private
static
Object
B
=
new
Object
();
private
static
ThreadMXBean
mxBean
=
ManagementFactory
.
getThreadMXBean
();
public
static
void
main
(
String
[]
args
)
throws
Exception
{
Runnable
a
= () -> {
mxBean
.
findDeadlockedThreads
();
synchronized
(
A
) {
System
.
out
.
println
(
"获取到A...尝试获取B"
);
synchronized
(
B
) {
System
.
out
.
println
(
"获取到AB"
);
try
{
Thread
.
sleep
(
1000
);
}
catch
(
Exception
e
) {
}
}
}
};
Runnable
b
= () -> {
synchronized
(
B
) {
System
.
out
.
println
(
"获取到B...尝试获取A"
);
synchronized
(
A
) {
System
.
out
.
println
(
"获取到AB"
);
try
{
Thread
.
sleep
(
1000
);
}
catch
(
Exception
e
) {
}
}
}
};
for
(
int
i
=
0
;
i
<
10
;
i
++) {
new
Thread
(
a
).
start
();
new
Thread
(
b
).
start
();
}
ScheduledExecutorService
scheduledExecutorService
=
Executors
.
newScheduledThreadPool
(
1
);
}
}
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