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refactor: simplify pruning violation check

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By generalizing 'GetFirstStoredBlock' and implementing
'CheckBlockDataAvailability' we can dedup code and
avoid repeating work when multiple indexes are enabled.
E.g. get the oldest block across all indexes and
perform the pruning violation check from that point
up to the tip only once (this feature is being introduced
in a follow-up commit).

This commit shouldn't change behavior in any way.

Co-authored-by: Ryan Ofsky <ryan@ofsky.org>
This commit is contained in:
furszy
2023-05-16 19:19:06 -03:00
parent c82ef91eae
commit 2ec89f1970
4 changed files with 48 additions and 35 deletions
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7
src/node/blockstorage.h
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@@ -222,10 +222,15 @@ public:
//! Returns last CBlockIndex* that is a checkpoint
const CBlockIndex* GetLastCheckpoint(const CCheckpointData& data) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
//! Check if all blocks in the [upper_block, lower_block] range have data available.
//! The caller is responsible for ensuring that lower_block is an ancestor of upper_block
//! (part of the same chain).
bool CheckBlockDataAvailability(const CBlockIndex& upper_block LIFETIMEBOUND, const CBlockIndex& lower_block LIFETIMEBOUND) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
//! Find the first stored ancestor of start_block immediately after the last
//! pruned ancestor. Return value will never be null. Caller is responsible
//! for ensuring that start_block has data is not pruned.
const CBlockIndex* GetFirstStoredBlock(const CBlockIndex& start_block LIFETIMEBOUND) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
const CBlockIndex* GetFirstStoredBlock(const CBlockIndex& start_block LIFETIMEBOUND, const CBlockIndex* lower_block=nullptr) EXCLUSIVE_LOCKS_REQUIRED(::cs_main);
/** True if any block files have ever been pruned. */
bool m_have_pruned = false;