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PayloadExecutionCache

reth_engine_tree::tree::payload_processor

Struct PayloadExecutionCache 

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pub struct PayloadExecutionCache { /* private fields */ }
Expand description

Shared access to most recently used cache.

This cache is intended to used for processing the payload in the following manner:

  • Get Cache if the payload’s parent block matches the parent block
  • Update cache upon successful payload execution

This process assumes that payloads are received sequentially.

§Cache Safety

CRITICAL: Cache update operations require exclusive access. All concurrent cache users (such as prewarming tasks) must be terminated before calling PayloadExecutionCache::update_with_guard, otherwise the cache may be corrupted or cleared.

§Cache vs Prewarming Distinction

PayloadExecutionCache:

  • Stores parent block’s execution state after completion
  • Used to fetch parent data for next block’s execution
  • Must be exclusively accessed during save operations

PrewarmCacheTask:

  • Speculatively loads accounts/storage that might be used in transaction execution
  • Prepares data for state root proof computation
  • Runs concurrently but must not interfere with cache saves

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impl PayloadExecutionCache

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pub fn update_with_guard<F>(&self, update_fn: F)
where F: FnOnce(&mut Option<SavedCache>),

Updates the cache with a closure that has exclusive access to the guard. This ensures that all cache operations happen atomically.

§CRITICAL SAFETY REQUIREMENT

Before calling this method, you MUST ensure there are no other active cache users. This includes:

  • No running PrewarmCacheTask instances that could write to the cache
  • No concurrent transactions that might access the cached state
  • All prewarming operations must be completed or cancelled

Violating this requirement can result in cache corruption, incorrect state data, and potential consensus failures.

Trait Implementations§

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impl Clone for PayloadExecutionCache

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fn clone(&self) -> PayloadExecutionCache

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for PayloadExecutionCache

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for PayloadExecutionCache

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fn default() -> PayloadExecutionCache

Returns the “default value” for a type. Read more

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🔬This is a nightly-only experimental API. (clone_to_uninit #126799)
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Size: 40 bytes