pro.fessional.mirana.lock

Class JvmStaticGlobalLock

java.lang.Object

pro.fessional.mirana.lock.JvmStaticGlobalLock

All Implemented Interfaces:

GlobalLock

public class JvmStaticGlobalLock
extends Object
implements GlobalLock

Wrapping ReentrantLock with WeakHashMap as the underlying implementation. WeakReference is used to control memory usage and correct locking.

Since:

2021-03-08

Author:

trydofor

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JvmStaticGlobalLock.Hd

Nested classes/interfaces inherited from interface pro.fessional.mirana.lock.GlobalLock

GlobalLock.AutoLock

Constructor Summary

Constructors

Constructor and Description
JvmStaticGlobalLock()

Method Summary

Modifier and Type	Method and Description
static int	countLocks() sync method to count currently locks.
static @NotNull Lock	get(Object... key) All keys must implement hashcode and equals methods in order to match the correct lock.
@NotNull Lock	getLock(@NotNull String name) Create a lock instance by its name.
static @NotNull GlobalLock.AutoLock	lock(Object... key) try-resource pattern lock

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface pro.fessional.mirana.lock.GlobalLock

lock

Constructor Detail

JvmStaticGlobalLock

public JvmStaticGlobalLock()

Method Detail

getLock

@NotNull
public @NotNull Lock getLock(@NotNull
                                      @NotNull String name)

Description copied from interface: GlobalLock

Create a lock instance by its name. and tryLock and unlock methods must be implemented in the lock instance

Specified by:

getLock in interface GlobalLock

Parameters:

name - name of lock

Returns:

lock

get

@NotNull
public static @NotNull Lock get(@NotNull
                                         Object... key)

All keys must implement hashcode and equals methods in order to match the correct lock. If there is only one parameter and it is an ArrayKey, then use it directly.

Parameters:

key - keys to get lock

Returns:

lock

lock

@NotNull
public static @NotNull GlobalLock.AutoLock lock(@NotNull
                                                         Object... key)

try-resource pattern lock

Parameters:

key - keys to get lock

Returns:

AutoLock

See Also:

GlobalLock.lock(String)

countLocks

public static int countLocks()

sync method to count currently locks. used only for testing purposes.

Returns:

count of locks