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 { 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 */ 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
