optimize block store CompactBlocks (#384)

- Improvement: Optimize block compact reducing memcpy operations
- Improvement: Handle padding of block store blocks when compacting to avoid excessive flusing of write buffer
- Improvement: Handle padding when writing oplog index snapshot to avoid unnecessary flushing of write buffer

1 files changed, 5 insertions, 3 deletions

diff --git a/src/zencore/include/zencore/basicfile.h b/src/zencore/include/zencore/basicfile.h
index 57798b6f4..465499d2b 100644
--- a/src/zencore/include/zencore/basicfile.h
+++ b/src/zencore/include/zencore/basicfile.h
@@ -174,9 +174,11 @@ public:
 	BasicFileWriter(BasicFile& Base, uint64_t BufferSize);
 	~BasicFileWriter();
 
-	void Write(const void* Data, uint64_t Size, uint64_t FileOffset);
-	void Write(const CompositeBuffer& Data, uint64_t FileOffset);
-	void Flush();
+	void	 Write(const void* Data, uint64_t Size, uint64_t FileOffset);
+	void	 Write(const CompositeBuffer& Data, uint64_t FileOffset);
+	void	 AddPadding(uint64_t Padding);
+	uint64_t AlignTo(uint64_t Alignment);
+	void	 Flush();
 
 private:
 	BasicFile&	   m_Base;