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Merge bitcoin/bitcoin#34443: validation: follow-up nits for lock-free IsInitialBlockDownload()

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eeb4d28148 validation: follow-up nits for lock-free `IsInitialBlockDownload()` (Lőrinc)

Pull request description:

  Innocent follow-up to #34253:
  * Add `AssertLockHeld(cs_main)` to `ChainstateManager::UpdateIBDStatus()` given it's already annotated with `EXCLUSIVE_LOCKS_REQUIRED(cs_main)`.
  * Fix outdated comment about constness of `ChainstateManager::IsInitialBlockDownload()` (compilation and build passes without it).
  * And since we're touching it, we might as well mark `ChainstateManager::IsInitialBlockDownload()` as `noexcept` now.

ACKs for top commit:
  davidgumberg:
    crACK eeb4d28148
  sedited:
    ACK eeb4d28148
  mzumsande:
    utACK eeb4d28148

Tree-SHA512: 110cf5b03dc4f4cf6e61563ef69da6368e43009cf0fe1b10870cb4f55203c347444c8623aae7357d0ee5ba3f4b10da535b440a5871c9c5a4f7f8f88c2accd1f1
This commit is contained in:
merge-script
2026-02-02 07:57:34 +01:00
parent 8bb77f348e eeb4d28148
commit 08547ee1b0
2 changed files with 4 additions and 8 deletions
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10
src/validation.cpp
View File

@@ -1935,13 +1935,8 @@ void Chainstate::InitCoinsCache(size_t cache_size_bytes)
m_coins_views->InitCache();
}
// This function must be marked `const` so that `CValidationInterface` clients
// (which are given a `const Chainstate*`) can call it.
//
// It is lock-free and depends on `m_cached_is_ibd`, which is latched by
// `UpdateIBDStatus()`.
//
bool ChainstateManager::IsInitialBlockDownload() const
// Lock-free: depends on `m_cached_is_ibd`, which is latched by `UpdateIBDStatus()`.
bool ChainstateManager::IsInitialBlockDownload() const noexcept
{
return m_cached_is_ibd.load(std::memory_order_relaxed);
}
@@ -3324,6 +3319,7 @@ static SynchronizationState GetSynchronizationState(bool init, bool blockfiles_i
void ChainstateManager::UpdateIBDStatus()
{
AssertLockHeld(cs_main);
if (!m_cached_is_ibd.load(std::memory_order_relaxed)) return;
if (m_blockman.LoadingBlocks()) return;
if (!CurrentChainstate().m_chain.IsTipRecent(MinimumChainWork(), m_options.max_tip_age)) return;

2
src/validation.h
View File

@@ -1187,7 +1187,7 @@ public:
mutable VersionBitsCache m_versionbitscache;
/** Check whether we are doing an initial block download (synchronizing from disk or network) */
bool IsInitialBlockDownload() const;
bool IsInitialBlockDownload() const noexcept;
/** Guess verification progress (as a fraction between 0.0=genesis and 1.0=current tip). */
double GuessVerificationProgress(const CBlockIndex* pindex) const EXCLUSIVE_LOCKS_REQUIRED(GetMutex());