Merge bitcoin#23258: doc: Fix outdated comments referring to ::ChainA…

…ctive()

a0efe52 Fix outdated comments referring to ::ChainActive() (Samuel Dobson)

Pull request description:

  After bitcoin#21866 there are a few outdated comments referring to `::ChainActive()`, which should instead refer to `ChainstateManager::ActiveChain()`.

ACKs for top commit:
  jamesob:
    ACK bitcoin@a0efe52

Tree-SHA512: 80da19c105ed29ac247e6df4c8e916c3bf3f37230b63f07302114eef9c115add673e9649f0bbe237295be0c6da7b1030b5b93e14daf6768f17ce5de7cf2c9ff2

src/index/base.cpp

@@ -321,7 +321,7 @@ bool BaseIndex::BlockUntilSyncedToCurrentChain() const
 
     {
         // Skip the queue-draining stuff if we know we're caught up with
-        // ::ChainActive().Tip().
+        // m_chain.Tip().
         LOCK(cs_main);
         const CBlockIndex* chain_tip = m_chainstate->m_chain.Tip();
         const CBlockIndex* best_block_index = m_best_block_index.load();

src/policy/fees.cpp

@@ -549,7 +549,7 @@ void CBlockPolicyEstimator::processTransaction(const CTxMemPoolEntry& entry, boo
     if (txHeight != nBestSeenHeight) {
         // Ignore side chains and re-orgs; assuming they are random they don't
         // affect the estimate.  We'll potentially double count transactions in 1-block reorgs.
-        // Ignore txs if BlockPolicyEstimator is not in sync with ::ChainActive().Tip().
+        // Ignore txs if BlockPolicyEstimator is not in sync with ActiveChain().Tip().
         // It will be synced next time a block is processed.
         return;
     }

src/txmempool.h

@@ -542,7 +542,7 @@ class CTxMemPool
      * By design, it is guaranteed that:
      *
      * 1. Locking both `cs_main` and `mempool.cs` will give a view of mempool
-     *    that is consistent with current chain tip (`::ChainActive()` and
+     *    that is consistent with current chain tip (`ActiveChain()` and
      *    `CoinsTip()`) and is fully populated. Fully populated means that if the
      *    current active chain is missing transactions that were present in a
      *    previously active chain, all the missing transactions will have been

src/validation.cpp

@@ -219,7 +219,7 @@ bool TestLockPointValidity(CChain& active_chain, const LockPoints* lp)
     // If there are relative lock times then the maxInputBlock will be set
     // If there are no relative lock times, the LockPoints don't depend on the chain
     if (lp->maxInputBlock) {
-        // Check whether ::ChainActive() is an extension of the block at which the LockPoints
+        // Check whether active_chain is an extension of the block at which the LockPoints
         // calculation was valid.  If not LockPoints are no longer valid
         if (!active_chain.Contains(lp->maxInputBlock)) {
             return false;

src/validation.h

@@ -75,7 +75,7 @@ static const char* const DEFAULT_BLOCKFILTERINDEX = "0";
 static const bool DEFAULT_PERSIST_MEMPOOL = true;
 /** Default for -stopatheight */
 static const int DEFAULT_STOPATHEIGHT = 0;
-/** Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ::ChainActive().Tip() will not be pruned. */
+/** Block files containing a block-height within MIN_BLOCKS_TO_KEEP of ActiveChain().Tip() will not be pruned. */
 static const unsigned int MIN_BLOCKS_TO_KEEP = 288;
 static const signed int DEFAULT_CHECKBLOCKS = 6;
 static const unsigned int DEFAULT_CHECKLEVEL = 3;

src/wallet/wallet.cpp

@@ -1294,7 +1294,7 @@ void CWallet::updatedBlockTip()
 void CWallet::BlockUntilSyncedToCurrentChain() const {
     AssertLockNotHeld(cs_wallet);
     // Skip the queue-draining stuff if we know we're caught up with
-    // ::ChainActive().Tip(), otherwise put a callback in the validation interface queue and wait
+    // chain().Tip(), otherwise put a callback in the validation interface queue and wait
     // for the queue to drain enough to execute it (indicating we are caught up
     // at least with the time we entered this function).
     uint256 last_block_hash = WITH_LOCK(cs_wallet, return m_last_block_processed);