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Pieter Wuille

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17 commits1 monitored projects0 candidates0 high-risk analyses
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Bitcoin CoreBitcoin Core17 commits0 candidates0 high risk
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: avoid heap allocations in GetLinearization

This is a routine performance optimization in Bitcoin Core's transaction-cluster linearization code. It replaces dynamically-allocated vectors with fixed-size stack arrays to avoid repeated heap memory allocations. There is no security-rel…

e6ca9962by Pieter Wuille+26−201 file
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: avoid recomputing intersections in MergeChunks

This is a small internal performance improvement in Bitcoin Core's transaction clustering code. It avoids doing the same bit-set intersection twice by saving the result of the first pass. There is no security-relevant change: no new behavi…

efb4eae3by Pieter Wuille+10−51 file
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: reserve the suboptimal-chunk queue up front

This is a routine performance improvement, not a security fix. It pre-allocates memory for an internal queue so the program doesn't waste time repeatedly resizing it while building a data structure. There is no user-facing or security-rele…

4b91ad14by Pieter Wuille+1−01 file
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Informational 15 AI analysisMessage 50 · Thin
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

Remove myself as security contact

This commit simply removes one person (Pieter Wuille) from the list of security contacts in the project's SECURITY.md file. It is an administrative change to the documented contact list and does not alter any code, fix any bug, or change a…

629df81eby Pieter Wuille+0−11 file
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Informational 15 AI analysisMessage 35 · Opaque
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: rescale costs (preparation)

This commit is a non-security internal tuning change for Bitcoin Core's transaction mempool linearization logic. It multiplies several cost constants by 38 to prepare for future algorithm changes, and updates corresponding test/fuzz thresh…

4eefdfc5by Pieter Wuille+13−134 files
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Informational 15 AI analysisMessage 50 · Thin
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: use 'cost' terminology instead of 'iters' (refactor)

This commit is a pure rename/refactor. It changes variable names, comments, and constant names from 'iterations'/'iters' to 'cost' throughout the cluster linearization and transaction graph code. No logic, behavior, or security properties …

ecc9a84fby Pieter Wuille+111−9112 files
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: introduce CostModel class (preparation)

This commit is a pure internal refactoring of Bitcoin Core's transaction linearization code. It replaces a simple numeric cost counter with a pluggable 'CostModel' class so future work can experiment with different ways of measuring algori…

9e7129dfby Pieter Wuille+89−121 file
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: improve TxData::dep_top_idx type (optimization)

This is a straightforward memory-use and performance optimization inside Bitcoin Core's transaction clustering code. It changes an internal index type to the smallest unsigned integer that fits the data, and switches a dynamically-sized ve…

b75574a6by Pieter Wuille+9−51 file
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Informational 16 AI analysisMessage 60 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: add more Assumes and sanity checks (tests)

This commit adds extra internal safety checks and test-like assertions to a Bitcoin Core transaction-cluster linearization module. It does not change normal network behavior; it only helps developers catch programming mistakes during testi…

Addition of defensive Assume() and assert() invariants in cluster linearization codeNo functional code path changes for production network behaviorNo bug class or vulnerability described in commit message or diff
268fcb6aby Pieter Wuille+16−21 file
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: count chunk deps without loop (optimization)

This is a small internal code cleanup in Bitcoin Core's transaction clustering/linearization logic. It replaces a loop that counted parent dependencies one-by-one with a faster set-difference count. There is no user-facing change, no netwo…

d69c9f56by Pieter Wuille+2−41 file
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Informational 14 AI analysisMessage 58 · Thin
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: pool SetInfos (preparation)

This commit is an internal refactoring of Bitcoin Core's transaction-cluster linearization code. It replaces a wasteful data structure (one 'SetInfo' per dependency) with a shared pool of SetInfos indexed separately from transactions. Ther…

7c6f63a8by Pieter Wuille+253−2582 files
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Informational 15 AI analysisMessage 73 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: avoid depgraph argument in SanityCheck (cleanup)

This is a small internal cleanup in Bitcoin Core's transaction-cluster linearization code. It removes an unnecessary argument from a debugging/self-check function called SanityCheck(), because the object already stores a reference to the s…

900e4597by Pieter Wuille+10−102 files
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Informational 15 AI analysisMessage 45 · Thin
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: split up OptimizeStep (refactor)

This commit is a straightforward code cleanup inside Bitcoin Core's transaction-cluster linearization logic. It takes one large function, OptimizeStep, and splits it into two smaller helper functions, PickChunkToOptimize and PickDependency…

dcf458ffby Pieter Wuille+60−421 file
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Informational 20 AI analysisMessage 45 · Thin
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: fix type to count dependencies

This commit fixes a variable type mismatch in Bitcoin Core's transaction clustering code. The code counts dependencies between groups of transactions, but was using a transaction-index type for the count. If that count type is smaller than…

Integer type mismatch in counting logicPotential overflow/truncation of dependency countIncorrect random range selection if count wraps
666b3797by Pieter Wuille+2−21 file
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Informational 15 AI analysisMessage 68 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: get rid of DepData (optimization)

This is a routine internal code cleanup in Bitcoin Core's transaction-cluster linearization logic. It replaces a separate list of dependency objects with direct parent/child indexes and a per-transaction vector, making the code simpler and…

73cbd15dby Pieter Wuille+76−1391 file
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Informational 15 AI analysisMessage 78 · Adequate
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

scripted-diff: rename _rep -> _idx in SFL

This commit is a purely mechanical rename of internal variable names in Bitcoin Core's transaction clustering code. Every occurrence of '_rep' (short for 'representative') is changed to '_idx' (short for 'index') in a single header file. T…

20e2f3e9by Pieter Wuille+98−981 file
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Informational 15 AI analysisMessage 95 · Strong
BC Bitcoin CoreBitcoin Core BitcoinSupply chain

clusterlin: split tx/chunk dep counting (preparation)

This is a routine internal code cleanup in Bitcoin Core's transaction clustering/linearization logic. It splits one combined counter into two separate counters for clarity, with no functional change intended. There is no security issue vis…

f66fa69cby Pieter Wuille+24−262 files
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