add ChainstateManager::MaybeRebalanceCaches()

Aside from in unittests, this method is unused at the moment. It will be used
in upcoming commits that enable utxo snapshot activation.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/validation.h b/src/validation.h
index b201403585..a4948c0187 100644
--- a/src/validation.h
+++ b/src/validation.h
@@ -794,6 +794,14 @@ public:
     //! chainstate to avoid duplicating block metadata.
     BlockManager m_blockman GUARDED_BY(::cs_main);
 
+    //! The total number of bytes available for us to use across all in-memory
+    //! coins caches. This will be split somehow across chainstates.
+    int64_t m_total_coinstip_cache{0};
+    //
+    //! The total number of bytes available for us to use across all leveldb
+    //! coins databases. This will be split somehow across chainstates.
+    int64_t m_total_coinsdb_cache{0};
+
     //! Instantiate a new chainstate and assign it based upon whether it is
     //! from a snapshot.
     //!
@@ -881,6 +889,10 @@ public:
 
     //! Clear (deconstruct) chainstate data.
     void Reset();
+
+    //! Check to see if caches are out of balance and if so, call
+    //! ResizeCoinsCaches() as needed.
+    void MaybeRebalanceCaches() EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
 };
 
 /** DEPRECATED! Please use node.chainman instead. May only be used in validation.cpp internally */