1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/mobile/android/base/SysInfo.java.in Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,159 @@
1.4 +#filter substitution
1.5 +/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +package org.mozilla.gecko;
1.11 +
1.12 +import org.mozilla.gecko.util.HardwareUtils;
1.13 +
1.14 +import android.os.StrictMode;
1.15 +import android.util.Log;
1.16 +
1.17 +import java.io.File;
1.18 +import java.io.FileFilter;
1.19 +
1.20 +import java.util.regex.Pattern;
1.21 +
1.22 +/**
1.23 + * A collection of system info values, broadly mirroring a subset of
1.24 + * nsSystemInfo. See also the constants in AppConstants, which reflect
1.25 + * much of nsIXULAppInfo.
1.26 + */
1.27 +public final class SysInfo {
1.28 + private static final String LOG_TAG = "GeckoSysInfo";
1.29 +
1.30 + // We don't mind an instant of possible duplicate work, we only wish to
1.31 + // avoid inconsistency, so we don't bother with synchronization for
1.32 + // these.
1.33 + private static volatile int cpuCount = -1;
1.34 +
1.35 + /**
1.36 + * Get the number of cores on the device.
1.37 + *
1.38 + * We can't use a nice tidy API call, because they're all wrong:
1.39 + *
1.40 + * <http://stackoverflow.com/questions/7962155/how-can-you-detect-a-dual-core-
1.41 + * cpu-on-an-android-device-from-code>
1.42 + *
1.43 + * This method is based on that code.
1.44 + *
1.45 + * @return the number of CPU cores, or 1 if the number could not be
1.46 + * determined.
1.47 + */
1.48 + public static int getCPUCount() {
1.49 + if (cpuCount > 0) {
1.50 + return cpuCount;
1.51 + }
1.52 +
1.53 + if (android.os.Build.VERSION.SDK_INT < 9) {
1.54 + return readCPUCount();
1.55 + }
1.56 +
1.57 + // Avoid a strict mode warning... but only on devices that have StrictMode.
1.58 + StrictMode.ThreadPolicy savedPolicy = StrictMode.allowThreadDiskReads();
1.59 + try {
1.60 + return readCPUCount();
1.61 + } finally {
1.62 + StrictMode.setThreadPolicy(savedPolicy);
1.63 + }
1.64 + }
1.65 +
1.66 + private static int readCPUCount() {
1.67 + class CpuFilter implements FileFilter {
1.68 + @Override
1.69 + public boolean accept(File pathname) {
1.70 + return Pattern.matches("cpu[0-9]+", pathname.getName());
1.71 + }
1.72 + }
1.73 + try {
1.74 + final File dir = new File("/sys/devices/system/cpu/");
1.75 + return cpuCount = dir.listFiles(new CpuFilter()).length;
1.76 + } catch (Exception e) {
1.77 + Log.w(LOG_TAG, "Assuming 1 CPU; got exception.", e);
1.78 + return cpuCount = 1;
1.79 + }
1.80 + }
1.81 +
1.82 + /**
1.83 + * Wraps HardwareUtils so callers don't need to know about it.
1.84 + */
1.85 + public static int getMemSize() {
1.86 + return HardwareUtils.getMemSize();
1.87 + }
1.88 +
1.89 + /**
1.90 + * @return the SDK version supported by this device, such as '16'.
1.91 + */
1.92 + public static int getVersion() {
1.93 + return android.os.Build.VERSION.SDK_INT;
1.94 + }
1.95 +
1.96 + /**
1.97 + * @return the release version string, such as "4.1.2".
1.98 + */
1.99 + public static String getReleaseVersion() {
1.100 + return android.os.Build.VERSION.RELEASE;
1.101 + }
1.102 +
1.103 + /**
1.104 + * @return the kernel version string, such as "3.4.10-geb45596".
1.105 + */
1.106 + public static String getKernelVersion() {
1.107 + return System.getProperty("os.version", "");
1.108 + }
1.109 +
1.110 + /**
1.111 + * @return the device manufacturer, such as "HTC".
1.112 + */
1.113 + public static String getManufacturer() {
1.114 + return android.os.Build.MANUFACTURER;
1.115 + }
1.116 +
1.117 + /**
1.118 + * @return the device name, such as "HTC One".
1.119 + */
1.120 + public static String getDevice() {
1.121 + // No, not android.os.Build.DEVICE.
1.122 + return android.os.Build.MODEL;
1.123 + }
1.124 +
1.125 + /**
1.126 + * @return the Android "hardware" identifier, such as "m7".
1.127 + */
1.128 + public static String getHardware() {
1.129 + return android.os.Build.HARDWARE;
1.130 + }
1.131 +
1.132 + /**
1.133 + * @return the system OS name. Hardcoded to "Android".
1.134 + */
1.135 + public static String getName() {
1.136 + // We deliberately differ from PR_SI_SYSNAME, which is "Linux".
1.137 + return "Android";
1.138 + }
1.139 +
1.140 + /**
1.141 + * @return the architecture string, excluding ABI.
1.142 + */
1.143 + public static String getArch() {
1.144 + return "@CPU_ARCH@"; // "arm"
1.145 + }
1.146 +
1.147 + /**
1.148 + * @return the Android architecture string, including ABI.
1.149 + */
1.150 + public static String getArchABI() {
1.151 + // Android likes to include the ABI, too ("armeabiv7"), so we
1.152 + // differ to add value.
1.153 + return android.os.Build.CPU_ABI;
1.154 + }
1.155 +
1.156 + /**
1.157 + * @return the default system locale, such as "en-US"
1.158 + */
1.159 + public static String getLocale() {
1.160 + return java.util.Locale.getDefault().toString().replace('_', '-');
1.161 + }
1.162 +}
