SegmentedLruPageList (Ignite 2.17.0)

java.lang.Object
- org.apache.ignite.internal.processors.cache.persistence.pagemem.SegmentedLruPageList

```
public class SegmentedLruPageList
extends Object
```
Pages Segmented-LRU (SLRU) list implementation.

See Also:

PageReplacementMode.SEGMENTED_LRU

Constructor Summary

Constructors
Constructor Description

SegmentedLruPageList(int totalPagesCnt, long memPtr)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addToTail(int pageIdx, boolean protectedPage)`	Add page to the tail of protected or probationary LRU list.
`void`	`moveToTail(int pageIdx)`	Move page to the tail of protected LRU list.
`int`	`poll()`	Remove page from the head of LRU list.
`void`	`remove(int pageIdx)`	Remove page from LRU list by page index.
`static long`	`requiredMemory(int pagesCnt)`	Memory required to service `pagesCnt` pages.

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

- Constructor Detail
  - SegmentedLruPageList
```
public SegmentedLruPageList(int totalPagesCnt,
                            long memPtr)
```
    Parameters:
    
    totalPagesCnt - Total pages count.
    
    memPtr - Pointer to memory region.
- Method Detail
  - poll
```
public int poll()
```
    Remove page from the head of LRU list.
    
    Returns:
    
    Page index or -1 if list is empty.
  - remove
```
public void remove(int pageIdx)
```
    Remove page from LRU list by page index.
    
    Parameters:
    
    pageIdx - Page index.
  - addToTail
```
public void addToTail(int pageIdx,
                      boolean protectedPage)
```
    Add page to the tail of protected or probationary LRU list.
    
    Parameters:
    
    pageIdx - Page index.
    
    protectedPage - Protected page flag.
  - moveToTail
```
public void moveToTail(int pageIdx)
```
    Move page to the tail of protected LRU list.
    
    Parameters:
    
    pageIdx - Page index.
  - requiredMemory
```
public static long requiredMemory(int pagesCnt)
```
    Memory required to service pagesCnt pages.
    
    Parameters:
    
    pagesCnt - Pages count.