EvmConfiguration.java

/*
 * Copyright contributors to Hyperledger Besu.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

package org.hyperledger.besu.evm.internal;

/** The Evm configuration. */
public record EvmConfiguration(long jumpDestCacheWeightKB, WorldUpdaterMode worldUpdaterMode) {

  /** How should the world state update be handled within transactions? */
  public enum WorldUpdaterMode {
    /**
     * Stack updates, requiring original account and storage values to read through the whole stack
     */
    STACKED,
    /** Share a single state for accounts and storage values, undoing changes on reverts. */
    JOURNALED
  }

  /** The constant DEFAULT. */
  public static final EvmConfiguration DEFAULT =
      new EvmConfiguration(32_000L, WorldUpdaterMode.STACKED);

  /**
   * Gets jump dest cache weight bytes.
   *
   * @return the jump dest cache weight bytes
   */
  public long getJumpDestCacheWeightBytes() {
    return jumpDestCacheWeightKB * 1024L;
  }
}