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Add chain walk queries for cumulative work and tx count. #892

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Merged
evoskuil merged 1 commit into from
Aug 9, 2026
+39 −0
Merged

Add chain walk queries for cumulative work and tx count. #892

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37 changes: 37 additions & 0 deletions include/bitcoin/database/impl/query/properties_block.ipp
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Original file line number Diff line number Diff line change
Expand Up @@ -110,6 +110,27 @@ bool CLASS::get_work(uint256_t& work, const header_link& link) const NOEXCEPT
return result;
}

// TODO: optimize with stored aggregate.
TEMPLATE
bool CLASS::get_branch_work(uint256_t& work, const header_link& link) const NOEXCEPT
{
uint256_t proof{};
auto parent = link;
work = zero;

while (get_work(proof, parent))
{
work += proof;
parent = to_parent(parent);

// Genesis parent link is terminal.
if (parent.is_terminal())
return true;
}

return false;
}

TEMPLATE
bool CLASS::get_bits(uint32_t& bits, const header_link& link) const NOEXCEPT
{
Expand Down Expand Up @@ -248,6 +269,22 @@ size_t CLASS::get_tx_count(const header_link& link) const NOEXCEPT
return txs.number;
}

// TODO: optimize with stored aggregate.
TEMPLATE
size_t CLASS::get_branch_tx_count(const header_link& link) const NOEXCEPT
{
size_t count{};
auto parent = link;

while (!parent.is_terminal())
{
count += get_tx_count(parent);
parent = to_parent(parent);
}

return count;
}

TEMPLATE
tx_link CLASS::get_position_tx(const header_link& link,
size_t position) const NOEXCEPT
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2 changes: 2 additions & 0 deletions include/bitcoin/database/query.hpp
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Expand Up @@ -375,6 +375,7 @@ class query
hash_digest get_top_candidate_hash() const NOEXCEPT;
hashes get_tx_keys(const header_link& link) const NOEXCEPT;
size_t get_tx_count(const header_link& link) const NOEXCEPT;
size_t get_branch_tx_count(const header_link& link) const NOEXCEPT;
inline hash_digest get_header_key(const header_link& link) const NOEXCEPT;
inline hash_digest get_tx_key(const tx_link& link) const NOEXCEPT;
inline ins_key get_point_key(const ins_link& link) const NOEXCEPT;
Expand Down Expand Up @@ -570,6 +571,7 @@ class query
bool get_timestamp(uint32_t& timestamp, const header_link& link) const NOEXCEPT;
bool get_version(uint32_t& version, const header_link& link) const NOEXCEPT;
bool get_work(uint256_t& work, const header_link& link) const NOEXCEPT;
bool get_branch_work(uint256_t& work, const header_link& link) const NOEXCEPT;
bool get_bits(uint32_t& bits, const header_link& link) const NOEXCEPT;
bool get_context(context& ctx, const header_link& link) const NOEXCEPT;
bool get_context(chain_context& ctx,
Expand Down
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