Fix disk usage stats (#194)

* Improve tracking of used disk space for filecas and compactcas
Add tracking of used disk space for project store
Remove ZenCacheStore as GcStorage/GcContributor
 - underlying ZenCacheNamespace instances register themselves directly
 - removing this also fixes double reporting of GcStorageSize for namespaces
* changelog

1 files changed, 4 insertions, 1 deletions

diff --git a/zenstore/include/zenstore/blockstore.h b/zenstore/include/zenstore/blockstore.h
index 9f16063a0..5ef2d4694 100644
--- a/zenstore/include/zenstore/blockstore.h
+++ b/zenstore/include/zenstore/blockstore.h
@@ -96,7 +96,6 @@ struct BlockStoreFile : public RefCounted
 	IoBuffer					 GetChunk(uint64_t Offset, uint64_t Size);
 	void						 Read(void* Data, uint64_t Size, uint64_t FileOffset);
 	void						 Write(const void* Data, uint64_t Size, uint64_t FileOffset);
-	void						 Truncate(uint64_t Size);
 	void						 Flush();
 	BasicFile&					 GetBasicFile();
 	void StreamByteRange(uint64_t FileOffset, uint64_t Size, std::function<void(const void* Data, uint64_t Size)>&& ChunkFun);
@@ -153,6 +152,8 @@ public:
 	static const char*			 GetBlockFileExtension();
 	static std::filesystem::path GetBlockPath(const std::filesystem::path& BlocksBasePath, const uint32_t BlockIndex);
 
+	inline uint64_t TotalSize() const { return m_TotalSize.load(std::memory_order::relaxed); }
+
 private:
 	std::unordered_map<uint32_t, Ref<BlockStoreFile>> m_ChunkBlocks;
 
@@ -165,6 +166,8 @@ private:
 	uint64_t			  m_MaxBlockSize  = 1u << 28;
 	uint64_t			  m_MaxBlockCount = BlockStoreDiskLocation::MaxBlockIndex + 1;
 	std::filesystem::path m_BlocksBasePath;
+
+	std::atomic_uint64_t m_TotalSize{};
 };
 
 void blockstore_forcelink();