index: enable bip352 parallel sync

Author: furszy

src/index/base.cpp

@@ -206,6 +206,7 @@ std::vector<std::any> BaseIndex::ProcessBlocks(bool process_in_order, const CBlo
 
     // If ordering is not required, process blocks directly from end to start
     for (const CBlockIndex* block = end; block && start->pprev != block; block = block->pprev) {
+        if (block->nHeight < m_start_height) continue;
         results.emplace_back(ProcessBlock(block));
     }
 

src/index/bip352.cpp

@@ -127,9 +127,6 @@ bool BIP352Index::CustomAppend(const interfaces::BlockInfo& block)
     // is needed on non-mainnet chains because m_start_height is 0 by default.
     if (block.height == 0) return true;
 
-    // Exclude pre-taproot
-    if (block.height < m_start_height) return true;
-
     tweak_index_entry index_entry;
     GetSilentPaymentKeys(Assert(block.data)->vtx, *Assert(block.undo_data), index_entry);
 

src/index/bip352.h

@@ -62,6 +62,13 @@ class BIP352Index final : public BaseIndex
 
     bool CustomAppend(const interfaces::BlockInfo& block) override;
 
+    std::any CustomProcessBlock(const interfaces::BlockInfo& block) override {
+        // Exclude pre-taproot
+        if (block.height < m_start_height) return true;
+
+        return CustomAppend(block);
+    }
+
     BaseIndex::DB& GetDB() const override;
 public:
 
@@ -70,6 +77,8 @@ class BIP352Index final : public BaseIndex
     // Destructor is declared because this class contains a unique_ptr to an incomplete type.
     virtual ~BIP352Index() override;
 
+    bool AllowParallelSync() override { return true; }
+
     bool FindSilentPayment(const uint256& block_hash, tweak_index_entry& index_entry) const;
 };