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https://issues.apache.org/jira/browse/DIRECTMEMORY-70?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13217132#comment-13217132
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Benoit Perroud commented on DIRECTMEMORY-70:
--------------------------------------------
Just to ensure I'm not completely off road, I extracted the following simplier
interface to replace the {{OffHeapMemoryBuffer}}
{{code}}
public interface ByteBufferAllocator
{
/**
* Allocate the given size off heap, or return null if the allocation
failed.
* @param size
* @return
*/
ByteBuffer allocate( final int size );
/**
* Return the given ByteBuffer making it available for a future usage
* @param buffer
*/
void free( final ByteBuffer buffer );
}
{{/code}}
This is lean and easy to understand. Two implementations are (almost) ready to
be used : a merging one, i.e. where returned pointers are merged together, and
a slab'style allocator, where buffers are of the same predefined sizes (i.e.
128b, 512b, 2k, 8k, 32k,... application specific).
{{MemoryManagerService}} is a more high level view with existing store,
retrieve, free and "collectExpire" functions, and wrap the allocated
{{ByteBuffer}} in a {{Pointer}} and return it.
{{MemoryManagerService}} is augmented with Input and OutputStream
functionalities to be able to stream in files, socket data, etc.
WDYT ?
> Move Pointer.class and Pointer."statistics" into an intermediate class
> CacheEntry
> ---------------------------------------------------------------------------------
>
> Key: DIRECTMEMORY-70
> URL: https://issues.apache.org/jira/browse/DIRECTMEMORY-70
> Project: Apache DirectMemory
> Issue Type: Improvement
> Reporter: Benoit Perroud
> Attachments:
> DIRECTMEMORY-70-MemoryManagerService-to-hide-implementation.patch
>
>
> In order to achieve better separation of responsabilities, attributes like
> Pointer.class, Pointer.hits, Pointer.lastHit, etc. should be moved into an
> intermediate class, for instance CacheEntry.
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