StripedCompositeReadWriteLock (Ignite 2.17.0)

java.lang.Object
- org.apache.ignite.internal.util.StripedCompositeReadWriteLock

All Implemented Interfaces:

ReadWriteLock
```
public class StripedCompositeReadWriteLock
extends Object
implements ReadWriteLock
```
ReadWriteLock with striping mechanics. Compared to ReentrantReadWriteLock it has slightly improved performance of ReadWriteLock.readLock() operations at the cost of ReadWriteLock.writeLock() operations and memory consumption. It also supports reentrancy semantics like ReentrantReadWriteLock.

Constructor Summary

Constructors
Constructor Description

StripedCompositeReadWriteLock(int concurrencyLvl)
Creates a new instance with given concurrency level.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getReadHoldCount()`	Queries the number of reentrant read holds on this lock by the current thread.
`boolean`	`isWriteLockedByCurrentThread()`	Queries if the write lock is held by the current thread.
`@NotNull Lock`	`readLock()`
`@NotNull Lock`	`writeLock()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StripedCompositeReadWriteLock
```
public StripedCompositeReadWriteLock(int concurrencyLvl)
```
    Creates a new instance with given concurrency level.
    
    Parameters:
    
    concurrencyLvl - Number of internal read locks.
- Method Detail
  - readLock
```
@NotNull
public @NotNull Lock readLock()
```
    Specified by:
    
    readLock in interface ReadWriteLock
  - writeLock
```
@NotNull
public @NotNull Lock writeLock()
```
    Specified by:
    
    writeLock in interface ReadWriteLock
  - isWriteLockedByCurrentThread
```
public boolean isWriteLockedByCurrentThread()
```
    Queries if the write lock is held by the current thread.
    
    Returns:
    
    true if the current thread holds the write lock and false otherwise
  - getReadHoldCount
```
public int getReadHoldCount()
```
    Queries the number of reentrant read holds on this lock by the current thread. A reader thread has a hold on a lock for each lock action that is not matched by an unlock action.
    
    Returns:
    
    the number of holds on the read lock by the current thread, or zero if the read lock is not held by the current thread