add separate PreCache step for GcReferenceChecker (#578)

- Improvement: GCv2: Use separate PreCache step to improve concurrency when checking references
- Improvement: GCv2: Improved verbose logging
- Improvement: GCv2: Sort chunks to read by block/offset when finding references
- Improvement: GCv2: Exit as soon as no more unreferenced items are left

1 files changed, 1 insertions, 1 deletions

diff --git a/src/zenserver/cache/cachedisklayer.h b/src/zenserver/cache/cachedisklayer.h
index 8d015d127..55d2a98f4 100644
--- a/src/zenserver/cache/cachedisklayer.h
+++ b/src/zenserver/cache/cachedisklayer.h
@@ -293,7 +293,6 @@ public:
 
 		using IndexMap = tsl::robin_map<IoHash, PayloadIndex, IoHash::Hasher>;
 
-	private:
 		GcManager&			  m_Gc;
 		std::atomic_uint64_t& m_OuterCacheMemoryUsage;
 		std::string			  m_BucketName;
@@ -329,6 +328,7 @@ public:
 		std::vector<ReferenceIndex> m_FirstReferenceIndex;
 		std::vector<IoHash>			m_ReferenceHashes;
 		std::vector<ReferenceIndex> m_NextReferenceHashesIndexes;
+		std::unique_ptr<HashSet>	m_UpdatedKeys;
 		size_t						m_ReferenceCount = 0;
 		std::atomic_uint64_t		m_StandaloneSize{};
 		std::atomic_uint64_t		m_MemCachedSize{};