Line data    Source code

       1             : // Copyright (C) 2016 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.server.patch;
      16             : 
      17             : import com.google.common.cache.Weigher;
      18             : 
      19             : /** Computes memory usage for {@link DiffSummary} in bytes of memory used. */
      20         152 : public class DiffSummaryWeigher implements Weigher<DiffSummaryKey, DiffSummary> {
      21             : 
      22             :   @Override
      23             :   public int weigh(DiffSummaryKey key, DiffSummary value) {
      24         103 :     int size =
      25             :         16
      26             :             + 4 * 8
      27             :             + 2 * 36 // Size of DiffSummaryKey, 64 bit JVM
      28             :             + 16
      29             :             + 8
      30             :             + 2 * 4 // Size of DiffSummary
      31             :             + 16
      32             :             + 8; // String[]
      33         103 :     for (String p : value.getPaths()) {
      34          90 :       size +=
      35             :           16
      36             :               + 8
      37             :               + 4 * 4 // String
      38             :               + 16
      39             :               + 8
      40          90 :               + p.length() * 2; // char[]
      41          90 :     }
      42         103 :     return size;
      43             :   }
      44             : }