1 /*
2  * Copyright (C) 2012 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 
17 package com.android.providers.contacts.util;
18 
19 import com.android.internal.util.MemInfoReader;
20 
21 public final class MemoryUtils {
MemoryUtils()22     private MemoryUtils() {
23     }
24 
25     private static long sTotalMemorySize = -1;
26 
27     /**
28      * Returns the amount of RAM available to the Linux kernel, i.e. whatever is left after all the
29      * other chips stake their claim, including GPUs, DSPs, cell radios, and any other greedy chips
30      * (in other words: this is probably less than the "RAM: 1 GB" that was printed on the
31      * box in far too big letters)
32      */
getTotalMemorySize()33     public static long getTotalMemorySize() {
34         if (sTotalMemorySize < 0) {
35             MemInfoReader reader = new MemInfoReader();
36             reader.readMemInfo();
37 
38             // getTotalSize() returns the "MemTotal" value from /proc/meminfo.
39             sTotalMemorySize = reader.getTotalSize();
40         }
41         return sTotalMemorySize;
42     }
43 }
44