merge-script c9ab10910c
Merge bitcoin/bitcoin#31444: cluster mempool: add txgraph diagrams/mining/eviction
8673e8f01917b48a5f5476792f759f44ea49d5a5 txgraph: Special-case singletons in chunk index (optimization) (Pieter Wuille)
abdd9d35a34dd9cd589c1b925ab4241d15e6446c txgraph: Skipping end of cluster has no impact (optimization) (Pieter Wuille)
604acc2c289fb187f55439a29dca02d39163df25 txgraph: Reuse discarded chunkindex entries (optimization) (Pieter Wuille)
c734081454d7d7552b1388a27de648bcdd2e4b3a txgraph: Introduce TxGraph::GetWorstMainChunk (feature) (Pieter Wuille)
394dbe21427ee30cca73d2b1e31f18a00a76a1a1 txgraph: Introduce BlockBuilder interface (feature) (Pieter Wuille)
883df3648ee92841e515bb6d8d259cb7054493b1 txgraph: Generalize GetClusterRefs to support subsections (preparation) (Pieter Wuille)
c28a602e007fcc0275bc34f58690820ebe4c9162 txgraph: Introduce TxGraphImpl observer tracking (preparation) (Pieter Wuille)
9095d8ac1c319cdf1b9d44a1fa5993e9a55ccb21 txgraph: Maintain chunk index (preparation) (Pieter Wuille)
87e74e1242ece5fc30e65d4881f24be3a0d02e44 txgraph: abstract out transaction ordering (refactor) (Pieter Wuille)
2614fea17fe3c179ca3a256fadf498ae8cbc03e0 txgraph: Add GetMainStagingDiagrams function (feature) (Pieter Wuille)

Pull request description:

  Part of cluster mempool: #30289.

  This adds more functionality to the txgraph module, specifically:
  * `TxGraph::GetMainStagingDiagrams()`, a function to obtain feerate diagrams for both the main graph and the staged changes to it, including only the clusters that differ between the two.
  * `TxGraph::GetBlockBuilder()`, a function to obtain an object which can efficiently iterate the chunks of the (main) graph from high to low chunk feerate, allowing each to be skipped or included.
  * `TxGraph::GetWorstMainChunk()`, a function to obtain the last chunk that would be returned by `GetBlockBuilder()`'s returned object, intended for eviction.

ACKs for top commit:
  monlovesmango:
    reACK 8673e8f01917b48a5f5476792f759f44ea49d5a5
  instagibbs:
    reACK 8673e8f01917b48a5f5476792f759f44ea49d5a5
  glozow:
    reACK 8673e8f0191

Tree-SHA512: 5c98c54919c44eb2f9545dfc130e54dfc25b5b54d43cf5ca9bcf46e019b9fd405a572fcd70e71e2a7c5b4b096cfd540a4d09ef1f52ba188504418682f1dfc4af
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