mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-02-26 15:47:21 +00:00
17d65e9451
This adds a method on vm.EVM to set the jumpdest cache implementation. It can be used to maintain an analysis cache across VM invocations, to improve performance by skipping the analysis for already known contracts. --------- Co-authored-by: lmittmann <lmittmann@users.noreply.github.com> Co-authored-by: Felix Lange <fjl@twurst.com>
47 lines
1.7 KiB
Go
47 lines
1.7 KiB
Go
// Copyright 2024 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package vm
|
|
|
|
import "github.com/ethereum/go-ethereum/common"
|
|
|
|
// JumpDestCache represents the cache of jumpdest analysis results.
|
|
type JumpDestCache interface {
|
|
// Load retrieves the cached jumpdest analysis for the given code hash.
|
|
// Returns the BitVec and true if found, or nil and false if not cached.
|
|
Load(codeHash common.Hash) (BitVec, bool)
|
|
|
|
// Store saves the jumpdest analysis for the given code hash.
|
|
Store(codeHash common.Hash, vec BitVec)
|
|
}
|
|
|
|
// mapJumpDests is the default implementation of JumpDests using a map.
|
|
// This implementation is not thread-safe and is meant to be used per EVM instance.
|
|
type mapJumpDests map[common.Hash]BitVec
|
|
|
|
// newMapJumpDests creates a new map-based JumpDests implementation.
|
|
func newMapJumpDests() JumpDestCache {
|
|
return make(mapJumpDests)
|
|
}
|
|
|
|
func (j mapJumpDests) Load(codeHash common.Hash) (BitVec, bool) {
|
|
vec, ok := j[codeHash]
|
|
return vec, ok
|
|
}
|
|
|
|
func (j mapJumpDests) Store(codeHash common.Hash, vec BitVec) {
|
|
j[codeHash] = vec
|
|
}
|