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Add a very naive block cache to the DiskBackedFileSystem.

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This would be a lot better as an LRU. Right now it's a 32-slot
hash table with random eviction.
This commit is contained in:
Andreas Kling 2018-10-25 12:35:49 +02:00
parent 82bbfa8496
commit fdc782c1d1
4 changed files with 36 additions and 3 deletions
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2
VirtualFileSystem/DiskBackedFileSystem.h
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@ -2,6 +2,7 @@
#include "FileSystem.h"
#include <AK/ByteBuffer.h>
#include <AK/HashMap.h>
class DiskBackedFileSystem : public FileSystem {
public:
@ -27,4 +28,5 @@ protected:
private:
unsigned m_blockSize { 0 };
RetainPtr<DiskDevice> m_device;
mutable HashMap<unsigned, ByteBuffer> m_blockCache;
};