Android Open Source - Emmagee Memory Info

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright (c) 2012-2013 NetEase, Inc. and other contributors
 */*from w w  w .  j a  v a  2  s  . c o m*/
 *  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.netease.qa.emmagee.utils;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;

import android.app.ActivityManager;
import android.content.Context;
import android.os.Debug;
import android.util.Log;

public class MemoryInfo {

  private static final String LOG_TAG = "Emmagee-"
      + MemoryInfo.class.getSimpleName();

  /**
   * read the total memory of certain device
   * 
   * @return total memory of device
   */
  public long getTotalMemory() {
    String memInfoPath = "/proc/meminfo";
    String readTemp = "";
    String memTotal = "";
    long memory = 0;
    try {
      FileReader fr = new FileReader(memInfoPath);
      BufferedReader localBufferedReader = new BufferedReader(fr, 8192);
      while ((readTemp = localBufferedReader.readLine()) != null) {
        if (readTemp.contains("MemTotal")) {
          String[] total = readTemp.split(":");
          memTotal = total[1].trim();
        }
      }
      String[] memKb = memTotal.split(" ");
      memTotal = memKb[0].trim();
      Log.d(LOG_TAG, "memTotal: " + memTotal);
      memory = Long.parseLong(memTotal);
    } catch (IOException e) {
      Log.e(LOG_TAG, "IOException: " + e.getMessage());
    }
    return memory;
  }

  /**
   * get free memory
   * 
   * @return free memory of device
   * 
   */
  public long getFreeMemorySize(Context context) {
    ActivityManager.MemoryInfo outInfo = new ActivityManager.MemoryInfo();
    ActivityManager am = (ActivityManager) context
        .getSystemService(Context.ACTIVITY_SERVICE);
    am.getMemoryInfo(outInfo);
    long avaliMem = outInfo.availMem;
    return avaliMem / 1024;
  }

  /**
   * get the memory of process with certain pid
   * 
   * @param pid
   *            pid of process
   * @param context
   *            context of certain activity
   * @return memory usage of certain process
   */
  public int getPidMemorySize(int pid, Context context) {
    ActivityManager am = (ActivityManager) context
        .getSystemService(Context.ACTIVITY_SERVICE);
    int[] myMempid = new int[] { pid };
    Debug.MemoryInfo[] memoryInfo = am.getProcessMemoryInfo(myMempid);
    memoryInfo[0].getTotalSharedDirty();
    
    // int memSize = memoryInfo[0].dalvikPrivateDirty;
    // TODO PSS
    int memSize = memoryInfo[0].getTotalPss();
    // int memSize = memoryInfo[0].getTotalPrivateDirty();
    return memSize;
  }

  /**
   * get the sdk version of phone
   * 
   * @return sdk version
   */
  public String getSDKVersion() {
    return android.os.Build.VERSION.RELEASE;
  }

  /**
   * get phone type
   * 
   * @return phone type
   */
  public String getPhoneType() {
    return android.os.Build.MODEL;
  }
}

Java Source Code List

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