use CBlockIndex* insted of uint256 for UpdatedBlockTip signal

- removes mapBlockIndex find operation
- theoretically allows removing the cs_main lock during zqm notification while introducing a new file position lock

1 files changed, 3 insertions, 2 deletions

diff --git a/src/validationinterface.h b/src/validationinterface.h
index 6f95ad74eb..ffb56d266b 100644
--- a/src/validationinterface.h
+++ b/src/validationinterface.h
@@ -11,6 +11,7 @@
 
 class CBlock;
 struct CBlockLocator;
+class CBlockIndex;
 class CReserveScript;
 class CTransaction;
 class CValidationInterface;
@@ -30,7 +31,7 @@ void SyncWithWallets(const CTransaction& tx, const CBlock* pblock = NULL);
 
 class CValidationInterface {
 protected:
-    virtual void UpdatedBlockTip(const uint256 &newHashTip) {}
+    virtual void UpdatedBlockTip(const CBlockIndex *pindex) {}
     virtual void SyncTransaction(const CTransaction &tx, const CBlock *pblock) {}
     virtual void SetBestChain(const CBlockLocator &locator) {}
     virtual void UpdatedTransaction(const uint256 &hash) {}
@@ -46,7 +47,7 @@ protected:
 
 struct CMainSignals {
     /** Notifies listeners of updated block chain tip */
-    boost::signals2::signal<void (const uint256 &)> UpdatedBlockTip;
+    boost::signals2::signal<void (const CBlockIndex *)> UpdatedBlockTip;
     /** Notifies listeners of updated transaction data (transaction, and optionally the block it is found in. */
     boost::signals2::signal<void (const CTransaction &, const CBlock *)> SyncTransaction;
     /** Notifies listeners of an updated transaction without new data (for now: a coinbase potentially becoming visible). */