The Tor Browser / file comparison
comparison: mobile/android/base/SysInfo.java.in
mobile/android/base/SysInfo.java.in
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| -1:000000000000 | 0:fbd5bb1965bd |
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| 1 #filter substitution | |
| 2 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*- | |
| 3 * This Source Code Form is subject to the terms of the Mozilla Public | |
| 4 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 6 | |
| 7 package org.mozilla.gecko; | |
| 8 | |
| 9 import org.mozilla.gecko.util.HardwareUtils; | |
| 10 | |
| 11 import android.os.StrictMode; | |
| 12 import android.util.Log; | |
| 13 | |
| 14 import java.io.File; | |
| 15 import java.io.FileFilter; | |
| 16 | |
| 17 import java.util.regex.Pattern; | |
| 18 | |
| 19 /** | |
| 20 * A collection of system info values, broadly mirroring a subset of | |
| 21 * nsSystemInfo. See also the constants in AppConstants, which reflect | |
| 22 * much of nsIXULAppInfo. | |
| 23 */ | |
| 24 public final class SysInfo { | |
| 25 private static final String LOG_TAG = "GeckoSysInfo"; | |
| 26 | |
| 27 // We don't mind an instant of possible duplicate work, we only wish to | |
| 28 // avoid inconsistency, so we don't bother with synchronization for | |
| 29 // these. | |
| 30 private static volatile int cpuCount = -1; | |
| 31 | |
| 32 /** | |
| 33 * Get the number of cores on the device. | |
| 34 * | |
| 35 * We can't use a nice tidy API call, because they're all wrong: | |
| 36 * | |
| 37 * <http://stackoverflow.com/questions/7962155/how-can-you-detect-a-dual-core- | |
| 38 * cpu-on-an-android-device-from-code> | |
| 39 * | |
| 40 * This method is based on that code. | |
| 41 * | |
| 42 * @return the number of CPU cores, or 1 if the number could not be | |
| 43 * determined. | |
| 44 */ | |
| 45 public static int getCPUCount() { | |
| 46 if (cpuCount > 0) { | |
| 47 return cpuCount; | |
| 48 } | |
| 49 | |
| 50 if (android.os.Build.VERSION.SDK_INT < 9) { | |
| 51 return readCPUCount(); | |
| 52 } | |
| 53 | |
| 54 // Avoid a strict mode warning... but only on devices that have StrictMode. | |
| 55 StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads(); | |
| 56 try { | |
| 57 return readCPUCount(); | |
| 58 } finally { | |
| 59 StrictMode.setThreadPolicy(savedPolicy); | |
| 60 } | |
| 61 } | |
| 62 | |
| 63 private static int readCPUCount() { | |
| 64 class CpuFilter implements FileFilter { | |
| 65 @Override | |
| 66 public boolean accept(File pathname) { | |
| 67 return Pattern.matches("cpu[0-9]+", pathname.getName()); | |
| 68 } | |
| 69 } | |
| 70 try { | |
| 71 final File dir = new File("/sys/devices/system/cpu/"); | |
| 72 return cpuCount = dir.listFiles(new CpuFilter()).length; | |
| 73 } catch (Exception e) { | |
| 74 Log.w(LOG_TAG, "Assuming 1 CPU; got exception.", e); | |
| 75 return cpuCount = 1; | |
| 76 } | |
| 77 } | |
| 78 | |
| 79 /** | |
| 80 * Wraps HardwareUtils so callers don't need to know about it. | |
| 81 */ | |
| 82 public static int getMemSize() { | |
| 83 return HardwareUtils.getMemSize(); | |
| 84 } | |
| 85 | |
| 86 /** | |
| 87 * @return the SDK version supported by this device, such as '16'. | |
| 88 */ | |
| 89 public static int getVersion() { | |
| 90 return android.os.Build.VERSION.SDK_INT; | |
| 91 } | |
| 92 | |
| 93 /** | |
| 94 * @return the release version string, such as "4.1.2". | |
| 95 */ | |
| 96 public static String getReleaseVersion() { | |
| 97 return android.os.Build.VERSION.RELEASE; | |
| 98 } | |
| 99 | |
| 100 /** | |
| 101 * @return the kernel version string, such as "3.4.10-geb45596". | |
| 102 */ | |
| 103 public static String getKernelVersion() { | |
| 104 return System.getProperty("os.version", ""); | |
| 105 } | |
| 106 | |
| 107 /** | |
| 108 * @return the device manufacturer, such as "HTC". | |
| 109 */ | |
| 110 public static String getManufacturer() { | |
| 111 return android.os.Build.MANUFACTURER; | |
| 112 } | |
| 113 | |
| 114 /** | |
| 115 * @return the device name, such as "HTC One". | |
| 116 */ | |
| 117 public static String getDevice() { | |
| 118 // No, not android.os.Build.DEVICE. | |
| 119 return android.os.Build.MODEL; | |
| 120 } | |
| 121 | |
| 122 /** | |
| 123 * @return the Android "hardware" identifier, such as "m7". | |
| 124 */ | |
| 125 public static String getHardware() { | |
| 126 return android.os.Build.HARDWARE; | |
| 127 } | |
| 128 | |
| 129 /** | |
| 130 * @return the system OS name. Hardcoded to "Android". | |
| 131 */ | |
| 132 public static String getName() { | |
| 133 // We deliberately differ from PR_SI_SYSNAME, which is "Linux". | |
| 134 return "Android"; | |
| 135 } | |
| 136 | |
| 137 /** | |
| 138 * @return the architecture string, excluding ABI. | |
| 139 */ | |
| 140 public static String getArch() { | |
| 141 return "@CPU_ARCH@"; // "arm" | |
| 142 } | |
| 143 | |
| 144 /** | |
| 145 * @return the Android architecture string, including ABI. | |
| 146 */ | |
| 147 public static String getArchABI() { | |
| 148 // Android likes to include the ABI, too ("armeabiv7"), so we | |
| 149 // differ to add value. | |
| 150 return android.os.Build.CPU_ABI; | |
| 151 } | |
| 152 | |
| 153 /** | |
| 154 * @return the default system locale, such as "en-US" | |
| 155 */ | |
| 156 public static String getLocale() { | |
| 157 return java.util.Locale.getDefault().toString().replace('_', '-'); | |
| 158 } | |
| 159 } |
