1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.contacts.util;
18
19import com.android.internal.util.MemInfoReader;
20
21public final class MemoryUtils {
22    private MemoryUtils() {
23    }
24
25    private static long sTotalMemorySize = -1;
26
27    public static long getTotalMemorySize() {
28        if (sTotalMemorySize < 0) {
29            MemInfoReader reader = new MemInfoReader();
30            reader.readMemInfo();
31
32            // getTotalSize() returns the "MemTotal" value from /proc/meminfo.
33            // Because the linux kernel doesn't see all the RAM on the system (e.g. GPU takes some),
34            // this is usually smaller than the actual RAM size.
35            sTotalMemorySize = reader.getTotalSize();
36        }
37        return sTotalMemorySize;
38    }
39}
40