| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * 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 android.cts.util; |
| |
| import android.app.ActivityManager; |
| import android.app.ActivityManager.MemoryInfo; |
| import android.app.Instrumentation; |
| import android.content.Context; |
| import android.os.ParcelFileDescriptor; |
| import android.os.StatFs; |
| |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| |
| public class SystemUtil { |
| public static long getFreeDiskSize(Context context) { |
| StatFs statFs = new StatFs(context.getFilesDir().getAbsolutePath()); |
| return (long)statFs.getAvailableBlocks() * statFs.getBlockSize(); |
| } |
| |
| public static long getFreeMemory(Context context) { |
| MemoryInfo info = new MemoryInfo(); |
| ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| activityManager.getMemoryInfo(info); |
| return info.availMem; |
| } |
| |
| public static long getTotalMemory(Context context) { |
| MemoryInfo info = new MemoryInfo(); |
| ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE); |
| activityManager.getMemoryInfo(info); |
| return info.totalMem; // TODO totalMem N/A in ICS. |
| } |
| |
| /** |
| * Executes a shell command using shell user identity, and return the standard output in string |
| * <p>Note: calling this function requires API level 21 or above |
| * @param instrumentation {@link Instrumentation} instance, obtained from a test running in |
| * instrumentation framework |
| * @param cmd the command to run |
| * @return the standard output of the command |
| * @throws Exception |
| */ |
| public static String runShellCommand(Instrumentation instrumentation, String cmd) |
| throws IOException { |
| ParcelFileDescriptor pfd = instrumentation.getUiAutomation().executeShellCommand(cmd); |
| byte[] buf = new byte[512]; |
| int bytesRead; |
| FileInputStream fis = new ParcelFileDescriptor.AutoCloseInputStream(pfd); |
| StringBuffer stdout = new StringBuffer(); |
| while ((bytesRead = fis.read(buf)) != -1) { |
| stdout.append(new String(buf, 0, bytesRead)); |
| } |
| fis.close(); |
| return stdout.toString(); |
| } |
| |
| } |