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664a14ba7ccoinstats: Move GetUTXOStats to rpc/blockchain (Carl Dong)f100687566kernel: Use ComputeUTXOStats in validation (Carl Dong)faa52387e8style-only: Rearrange using decls after scripted-diff (Carl Dong)f329a9298cscripted-diff: Move src/kernel/coinstats to kernel:: (Carl Dong)0e54456f04Use only kernel/coinstats.h in index/coinstatsindex.h (Carl Dong)80970985c9coinstats: Split node/coinstats.h to kernel/coinstats.h (Carl Dong)35f73ce4b2coinstats: Move hasher codepath to kernel/coinstats (Carl Dong)b7634fe02bMove logic from LookupUTXOStatsWithIndex to CoinStatsIndex::LookUpStats (Carl Dong)1352e410a5coinstats: Separate hasher/index lookup codepaths (Carl Dong)524463daf6coinstats: Return purely out-param CCoinsStats (Carl Dong)46eb9fc56acoinstats: Extract index_requested in-member to in-param (Carl Dong)a789f3f2b8coinstats: Extract hash_type in-member to in-param (Carl Dong)102294898dincludes: Remove rpc/util.h -> node/coinstats.h (Carl Dong)0848db9c35fuzz: Remove useless GetUTXOStats fuzz case (Carl Dong)52b1939993kernel: Remove unnecessary blockfilter{index,}.cpp (Carl Dong) Pull request description: Part of: #24303 Depends on: #24322 The `GetUTXOStats` function has 2 codepaths: - One which queries the `CoinStatsIndex` for the UTXO hash - One which actually performs the hashing For `libbitcoinkernel`, the only place where we call `GetUTXOStats` is in `PopulateAndValidateSnapshots`, which uses the `SHA256D` hash, and is therefore unable to use the `CoinStatsIndex` since that only provides `MuHash` hashes. Not that I think indices necessarily belong in `libbitcoinkernel` anyway. This PR separates these 2 aforementioned codepaths of `GetUTXOStats`, uses the hashing codepath in `PopulateAndValidateSnapshots`, and removes the need to link in `index/coinstatsindex.cpp` and `node/coinstats.cpp`. ----- Logistically, this PR: - Extracts out the `index_requested` and `hash_type` members of `CoinStats`, which served as "in-params" to `GetUTXOStats` embedded within the `CoinStats` struct. This allows `CoinStats` to only consist of "out-param" members, and be returned by `GetUTXOStats` without needing to be an "in-out" param - Introduce the purely virtual `UTXOHashers` class, with 3 implementations: `SHA256DHasher`, `MuHashHasher`, and `NullHasher`. These replace the existing template-based polymorphism. - Split `GetUTXOStats` into: - `CalculateUTXOStatsWithHasher(UTXOHasher&, ...)`, and - `LookupUTXOStatsWithIndex(CoinStatsIndex&, ...)` - Use `CalculateUTXOStatsWithHasher` directly where appropriate (`src/validation.cpp` and `src/fuzz`) - Move `GetUTXOStats` to `rpc/blockchain`, which is the only place that depends on `GetUTXOStats`'s weird fallback behaviour - Move `LookupUTXOStatsWithIndex` to `index/coinstatsindex` Code organization: - `src/` - `kernel/` → only contains the hashing codepath - `coinstats.cpp` → hashing codepath implementations - `coinstats.h` → header for `kernel/coinstats.cpp` - `index/` → only contains the index codepath - `coinstatsindex.cpp` → index codepath implementations - `coinstatsindex.h` - `validation.cpp` → only uses the hashing codepath - `rpc/blockchain.cpp` → uses both the hashing and index codepath, old `GetUTXOStats` fallback logic moved here as static - `test/fuzz/coins_view.cpp` → only uses the hashing codepath TODOs: - [x] Commit messages could be fleshed out more Would love any feedback! ACKs for top commit: laanwj: Code review ACK664a14ba7cTree-SHA512: 18722c7bd279174d2d1881fec33ea04a9b261aae1c12e998cf434ef297d8ded47de69c526c8033a2ba7abc93ba3d2ff5faf4ce05e8888c725c31cf885ce3ef73
src/node/
The src/node/ directory contains code that needs to access node state
(state in CChain, CBlockIndex, CCoinsView, CTxMemPool, and similar
classes).
Code in src/node/ is meant to be segregated from code in
src/wallet/ and src/qt/, to ensure wallet and GUI
code changes don't interfere with node operation, to allow wallet and GUI code
to run in separate processes, and to perhaps eventually allow wallet and GUI
code to be maintained in separate source repositories.
As a rule of thumb, code in one of the src/node/,
src/wallet/, or src/qt/ directories should avoid
calling code in the other directories directly, and only invoke it indirectly
through the more limited src/interfaces/ classes.
This directory is at the moment
sparsely populated. Eventually more substantial files like
src/validation.cpp and
src/txmempool.cpp might be moved there.