com.google.android.exoplayer2.upstream.cache

Class LeastRecentlyUsedCacheEvictor

java.lang.Object

com.google.android.exoplayer2.upstream.cache.LeastRecentlyUsedCacheEvictor

All Implemented Interfaces:

Cache.Listener, CacheEvictor, java.util.Comparator<CacheSpan>

public final class LeastRecentlyUsedCacheEvictor
extends java.lang.Object
implements CacheEvictor, java.util.Comparator<CacheSpan>

Evicts least recently used cache files first.

Constructor Summary

Constructors

Constructor and Description
LeastRecentlyUsedCacheEvictor(long maxBytes)

Method Summary

Modifier and Type	Method and Description
int	compare(CacheSpan lhs, CacheSpan rhs)
void	onCacheInitialized() Called when cache has been initialized.
void	onSpanAdded(Cache cache, CacheSpan span) Called when a CacheSpan is added to the cache.
void	onSpanRemoved(Cache cache, CacheSpan span) Called when a CacheSpan is removed from the cache.
void	onSpanTouched(Cache cache, CacheSpan oldSpan, CacheSpan newSpan) Called when an existing CacheSpan is accessed, causing it to be replaced.
void	onStartFile(Cache cache, java.lang.String key, long position, long maxLength) Called when a writer starts writing to the cache.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

LeastRecentlyUsedCacheEvictor

public LeastRecentlyUsedCacheEvictor(long maxBytes)

Method Detail

onCacheInitialized

public void onCacheInitialized()

Description copied from interface: CacheEvictor

Called when cache has been initialized.

Specified by:

onCacheInitialized in interface CacheEvictor

onStartFile

public void onStartFile(Cache cache,
                        java.lang.String key,
                        long position,
                        long maxLength)

Description copied from interface: CacheEvictor

Called when a writer starts writing to the cache.

Specified by:

onStartFile in interface CacheEvictor

Parameters:

cache - The source of the event.

key - The key being written.

position - The starting position of the data being written.

maxLength - The maximum length of the data being written.

onSpanAdded

public void onSpanAdded(Cache cache,
                        CacheSpan span)

Description copied from interface: Cache.Listener

Called when a CacheSpan is added to the cache.

Specified by:

onSpanAdded in interface Cache.Listener

Parameters:

cache - The source of the event.

span - The added CacheSpan.

onSpanRemoved

public void onSpanRemoved(Cache cache,
                          CacheSpan span)

Description copied from interface: Cache.Listener

Called when a CacheSpan is removed from the cache.

Specified by:

onSpanRemoved in interface Cache.Listener

Parameters:

cache - The source of the event.

span - The removed CacheSpan.

onSpanTouched

public void onSpanTouched(Cache cache,
                          CacheSpan oldSpan,
                          CacheSpan newSpan)

Description copied from interface: Cache.Listener

Called when an existing CacheSpan is accessed, causing it to be replaced. The new CacheSpan is guaranteed to represent the same data as the one it replaces, however CacheSpan.file and CacheSpan.lastAccessTimestamp may have changed.

Note that for span replacement, Cache.Listener.onSpanAdded(Cache, CacheSpan) and Cache.Listener.onSpanRemoved(Cache, CacheSpan) are not called in addition to this method.

Specified by:

onSpanTouched in interface Cache.Listener

Parameters:

cache - The source of the event.

oldSpan - The old CacheSpan, which has been removed from the cache.

newSpan - The new CacheSpan, which has been added to the cache.

compare

public int compare(CacheSpan lhs,
                   CacheSpan rhs)

Specified by:

compare in interface java.util.Comparator<CacheSpan>