mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-05-27 18:29:26 +00:00
5c4a89562d
Replaces the process-global LRU with a chain-owned, byte-bounded
SizeConstrainedCache (128MB) shared between block processor and
prefetcher. Threaded through Process/Prefetch as an optional argument;
RPC, tracing, and stateless callers pass nil and the EVM falls back to
its per-instance map. Adds chain/cache/jumpdest/{hit,miss} meters.
63 lines
2.2 KiB
Go
63 lines
2.2 KiB
Go
// Copyright 2026 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package core
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import (
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/common/lru"
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"github.com/ethereum/go-ethereum/core/vm"
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"github.com/ethereum/go-ethereum/metrics"
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)
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var (
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jumpDestHitMeter = metrics.NewRegisteredMeter("chain/cache/jumpdest/hit", nil)
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jumpDestMissMeter = metrics.NewRegisteredMeter("chain/cache/jumpdest/miss", nil)
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)
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// jumpDestCacheSize is the total memory budget granted to the jumpdest
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// analysis cache.
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const jumpDestCacheSize = 128 * 1024 * 1024
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// JumpDestCache is a thread-safe, byte-bounded LRU of JUMPDEST analysis
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// bitmaps. It is owned by BlockChain and shared across block processing and
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// prefetching, keyed by the immutable contract code hash.
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type JumpDestCache struct {
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cache *lru.SizeConstrainedCache[common.Hash, vm.BitVec]
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}
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// NewJumpDestCache constructs the analysis cache.
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func NewJumpDestCache() *JumpDestCache {
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return &JumpDestCache{
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cache: lru.NewSizeConstrainedCache[common.Hash, vm.BitVec](jumpDestCacheSize),
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}
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}
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// Load retrieves the cached jumpdest analysis for the given code hash.
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func (c *JumpDestCache) Load(hash common.Hash) (vm.BitVec, bool) {
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v, ok := c.cache.Get(hash)
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if ok {
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jumpDestHitMeter.Mark(1)
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} else {
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jumpDestMissMeter.Mark(1)
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}
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return v, ok
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}
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// Store saves the jumpdest analysis for the given code hash.
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func (c *JumpDestCache) Store(hash common.Hash, b vm.BitVec) {
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c.cache.Add(hash, b)
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}
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