gerrit-server/src/main/java/com/google/gerrit/server/patch/IntraLineWeigher.java

// Copyright (C) 2012 The Android Open Source Project
//
// 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.

package com.google.gerrit.server.patch;

import com.google.common.cache.Weigher;

/** Approximates memory usage for IntralineDiff in bytes of memory used. */
public class IntraLineWeigher implements
    Weigher<IntraLineDiffKey, IntraLineDiff> {
  @Override
  public int weigh(IntraLineDiffKey key, IntraLineDiff value) {
    return 16 + 8*8 + 2*36     // Size of IntraLineDiffKey, 64 bit JVM
        + 16 + 2*8 + 16+8+4+20 // Size of IntraLineDiff, 64 bit JVM
        + (8 + 16 + 4*4) * value.getEdits().size();
  }
}