获得android手机的CPU核心数
2014-09-18 15:31
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转载地址http://blog.csdn.net/stephen255/article/details/9056361
不需要root权限。
/sys/devices/system/cpu/cpu0 ----------Cpu1
/sys/devices/system/cpu/cpu1 ----------Cpu2
获取CPU最大频率：
// "/system/bin/cat" 命令行
// "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存储最大频率的文件的路径
[java] view
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public static long getCpuFrequence() {
ProcessBuilder cmd;
try {
String[] args = { "/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = reader.readLine();
return StringUtils.parseLongSafe(line, 10, 0);
} catch (IOException ex) {
ex.printStackTrace();
}
return 0;
}
// 获取CPU最小频率（单位KHZ）：
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public static String getMinCpuFreq() {
String result = "";
ProcessBuilder cmd;
try {
String[] args = { "/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
InputStream in = process.getInputStream();
byte[] re = new byte[24];
while (in.read(re) != -1) {
result = result + new String(re);
}
in.close();
} catch (IOException ex) {
ex.printStackTrace();
result = "N/A";
}
return result.trim();
}
// 实时获取CPU当前频率（单位KHZ）：
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public static String getCurCpuFreq() {
String result = "N/A";
try {
FileReader fr = new FileReader(
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
BufferedReader br = new BufferedReader(fr);
String text = br.readLine();
result = text.trim();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/ 获取CPU名字：
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public static String getCpuName() {
try {
FileReader fr = new FileReader("/proc/cpuinfo");
BufferedReader br = new BufferedReader(fr);
String text = br.readLine();
String[] array = text.split(":\\s+", 2);
for (int i = 0; i < array.length; i++) {
}
return array[1];
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
内存：/proc/meminfo：
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public void getTotalMemory() {
String str1 = "/proc/meminfo";
String str2="";
try {
FileReader fr = new FileReader(str1);
BufferedReader localBufferedReader = new BufferedReader(fr, 8192);
while ((str2 = localBufferedReader.readLine()) != null) {
Log.i(TAG, "---" + str2);
}
} catch (IOException e) {
}
}
Rom大小 www.2cto.com：
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public long[] getRomMemroy() {
long[] romInfo = new long[2];
//Total rom memory
romInfo[0] = getTotalInternalMemorySize();
//Available rom memory
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
romInfo[1] = blockSize * availableBlocks;
getVersion();
return romInfo;
}
public long getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize;
}
sdCard大小：
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public long[] getSDCardMemory() {
long[] sdCardInfo=new long[2];
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
File sdcardDir = Environment.getExternalStorageDirectory();
StatFs sf = new StatFs(sdcardDir.getPath());
long bSize = sf.getBlockSize();
long bCount = sf.getBlockCount();
long availBlocks = sf.getAvailableBlocks();
sdCardInfo[0] = bSize * bCount;//总大小
sdCardInfo[1] = bSize * availBlocks;//可用大小
}
return sdCardInfo;
}
系统的版本信息：
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public String[] getVersion(){
String[] version={"null","null","null","null"};
String str1 = "/proc/version";
String str2;
String[] arrayOfString;
try {
FileReader localFileReader = new FileReader(str1);
BufferedReader localBufferedReader = new BufferedReader(
localFileReader, 8192);
str2 = localBufferedReader.readLine();
arrayOfString = str2.split("\\s+");
version[0]=arrayOfString[2];//KernelVersion
localBufferedReader.close();
} catch (IOException e) {
}
version[1] = Build.VERSION.RELEASE;// firmware version
version[2]=Build.MODEL;//model
version[3]=Build.DISPLAY;//system version
return version;
}
mac地址和开机时间
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public String[] getOtherInfo(){
String[] other={"null","null"};
WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
if(wifiInfo.getMacAddress()!=null){
other[0]=wifiInfo.getMacAddress();
} else {
other[0] = "Fail";
}
other[1] = getTimes();
return other;
}
private String getTimes() {
long ut = SystemClock.elapsedRealtime() / 1000;
if (ut == 0) {
ut = 1;
}
int m = (int) ((ut / 60) % 60);
int h = (int) ((ut / 3600));
return h + " " + mContext.getString(R.string.info_times_hour) + m + " "
+ mContext.getString(R.string.info_times_minute);
}
---------------------------------------------------
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private static void updateCpuStat() {
ProcessBuilder cmd;
long oldMypidStat = first ? 0 : mypidStat;
long oldTotal = first ? 0 : total;
try {
StringBuilder builder = new StringBuilder();
int pid = android.os.Process.myPid();
String[] args = { "/system/bin/cat", "/proc/" + pid + "/stat" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
InputStream in = process.getInputStream();
byte[] re = new byte[1024];
int len;
while ((len = in.read(re)) != -1) {
builder.append(new String(re, 0, len));
}
// Log.i(TAG, builder.toString());
in.close();
String[] stats = builder.toString().split(" +", -1);
if (stats.length >= 17) {
long utime = StringUtils.parseLongSafe(stats[13], 10);
long stime = StringUtils.parseLongSafe(stats[14], 10);
long cutime = StringUtils.parseLongSafe(stats[15], 10);
long cstime = StringUtils.parseLongSafe(stats[16], 10);
// Log.i(TAG, String.format(
// "utime:%d, stime:%d, cutime:%d, cstime:%d", utime,
// stime, cutime, cstime));
mypidStat = utime + stime + cutime + cstime;
}
} catch (IOException ex) {
ex.printStackTrace();
}
try {
String[] args = { "/system/bin/cat", "/proc/stat" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
Matcher matcher = pattern.matcher(line);
if (matcher.matches()) {
String[] stats = line.split(" +", -1);
long tmpTotal = 0;
for (int i = 1; i < stats.length; i++) {
tmpTotal += StringUtils.parseLongSafe(stats[i], 10);
}
total = tmpTotal;
}
break;
}
if (first) {
first = false;
} else {
Log.i(TAG, String.format("vsir cpu usage: %2.1f%%",
(double) (mypidStat - oldMypidStat)
/ (total - oldTotal) * 100));
}
reader.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
//CPU个数
private int getNumCores() {
//Private Class to display only CPU devices in the directory listing
class CpuFilter implements FileFilter {
@Override
public boolean accept(File pathname) {
//Check if filename is "cpu", followed by a single digit number
if(Pattern.matches("cpu[0-9]", pathname.getName())) {
return true;
}
return false;
}
}
try {
//Get directory containing CPU info
File dir = new File("/sys/devices/system/cpu/");
//Filter to only list the devices we care about
File[] files = dir.listFiles(new CpuFilter());
Log.d(TAG, "CPU Count: "+files.length);
//Return the number of cores (virtual CPU devices)
return files.length;
} catch(Exception e) {
//Print exception
Log.d(TAG, "CPU Count: Failed.");
e.printStackTrace();
//Default to return 1 core
return 1;
}
}不需要root权限。
/sys/devices/system/cpu/cpu0 ----------Cpu1
/sys/devices/system/cpu/cpu1 ----------Cpu2
获取CPU最大频率：
// "/system/bin/cat" 命令行
// "/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" 存储最大频率的文件的路径
[java] view
plaincopy
public static long getCpuFrequence() {
ProcessBuilder cmd;
try {
String[] args = { "/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = reader.readLine();
return StringUtils.parseLongSafe(line, 10, 0);
} catch (IOException ex) {
ex.printStackTrace();
}
return 0;
}
// 获取CPU最小频率（单位KHZ）：
[java] view
plaincopy
public static String getMinCpuFreq() {
String result = "";
ProcessBuilder cmd;
try {
String[] args = { "/system/bin/cat",
"/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
InputStream in = process.getInputStream();
byte[] re = new byte[24];
while (in.read(re) != -1) {
result = result + new String(re);
}
in.close();
} catch (IOException ex) {
ex.printStackTrace();
result = "N/A";
}
return result.trim();
}
// 实时获取CPU当前频率（单位KHZ）：
[java] view
plaincopy
public static String getCurCpuFreq() {
String result = "N/A";
try {
FileReader fr = new FileReader(
"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
BufferedReader br = new BufferedReader(fr);
String text = br.readLine();
result = text.trim();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
/ 获取CPU名字：
[java] view
plaincopy
public static String getCpuName() {
try {
FileReader fr = new FileReader("/proc/cpuinfo");
BufferedReader br = new BufferedReader(fr);
String text = br.readLine();
String[] array = text.split(":\\s+", 2);
for (int i = 0; i < array.length; i++) {
}
return array[1];
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
内存：/proc/meminfo：
[java] view
plaincopy
public void getTotalMemory() {
String str1 = "/proc/meminfo";
String str2="";
try {
FileReader fr = new FileReader(str1);
BufferedReader localBufferedReader = new BufferedReader(fr, 8192);
while ((str2 = localBufferedReader.readLine()) != null) {
Log.i(TAG, "---" + str2);
}
} catch (IOException e) {
}
}
Rom大小 www.2cto.com：
[java] view
plaincopy
public long[] getRomMemroy() {
long[] romInfo = new long[2];
//Total rom memory
romInfo[0] = getTotalInternalMemorySize();
//Available rom memory
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long availableBlocks = stat.getAvailableBlocks();
romInfo[1] = blockSize * availableBlocks;
getVersion();
return romInfo;
}
public long getTotalInternalMemorySize() {
File path = Environment.getDataDirectory();
StatFs stat = new StatFs(path.getPath());
long blockSize = stat.getBlockSize();
long totalBlocks = stat.getBlockCount();
return totalBlocks * blockSize;
}
sdCard大小：
[java] view
plaincopy
public long[] getSDCardMemory() {
long[] sdCardInfo=new long[2];
String state = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(state)) {
File sdcardDir = Environment.getExternalStorageDirectory();
StatFs sf = new StatFs(sdcardDir.getPath());
long bSize = sf.getBlockSize();
long bCount = sf.getBlockCount();
long availBlocks = sf.getAvailableBlocks();
sdCardInfo[0] = bSize * bCount;//总大小
sdCardInfo[1] = bSize * availBlocks;//可用大小
}
return sdCardInfo;
}
系统的版本信息：
[java] view
plaincopy
public String[] getVersion(){
String[] version={"null","null","null","null"};
String str1 = "/proc/version";
String str2;
String[] arrayOfString;
try {
FileReader localFileReader = new FileReader(str1);
BufferedReader localBufferedReader = new BufferedReader(
localFileReader, 8192);
str2 = localBufferedReader.readLine();
arrayOfString = str2.split("\\s+");
version[0]=arrayOfString[2];//KernelVersion
localBufferedReader.close();
} catch (IOException e) {
}
version[1] = Build.VERSION.RELEASE;// firmware version
version[2]=Build.MODEL;//model
version[3]=Build.DISPLAY;//system version
return version;
}
mac地址和开机时间
[java] view
plaincopy
public String[] getOtherInfo(){
String[] other={"null","null"};
WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
if(wifiInfo.getMacAddress()!=null){
other[0]=wifiInfo.getMacAddress();
} else {
other[0] = "Fail";
}
other[1] = getTimes();
return other;
}
private String getTimes() {
long ut = SystemClock.elapsedRealtime() / 1000;
if (ut == 0) {
ut = 1;
}
int m = (int) ((ut / 60) % 60);
int h = (int) ((ut / 3600));
return h + " " + mContext.getString(R.string.info_times_hour) + m + " "
+ mContext.getString(R.string.info_times_minute);
}
---------------------------------------------------
[java] view
plaincopy
private static void updateCpuStat() {
ProcessBuilder cmd;
long oldMypidStat = first ? 0 : mypidStat;
long oldTotal = first ? 0 : total;
try {
StringBuilder builder = new StringBuilder();
int pid = android.os.Process.myPid();
String[] args = { "/system/bin/cat", "/proc/" + pid + "/stat" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
InputStream in = process.getInputStream();
byte[] re = new byte[1024];
int len;
while ((len = in.read(re)) != -1) {
builder.append(new String(re, 0, len));
}
// Log.i(TAG, builder.toString());
in.close();
String[] stats = builder.toString().split(" +", -1);
if (stats.length >= 17) {
long utime = StringUtils.parseLongSafe(stats[13], 10);
long stime = StringUtils.parseLongSafe(stats[14], 10);
long cutime = StringUtils.parseLongSafe(stats[15], 10);
long cstime = StringUtils.parseLongSafe(stats[16], 10);
// Log.i(TAG, String.format(
// "utime:%d, stime:%d, cutime:%d, cstime:%d", utime,
// stime, cutime, cstime));
mypidStat = utime + stime + cutime + cstime;
}
} catch (IOException ex) {
ex.printStackTrace();
}
try {
String[] args = { "/system/bin/cat", "/proc/stat" };
cmd = new ProcessBuilder(args);
Process process = cmd.start();
BufferedReader reader = new BufferedReader(new InputStreamReader(
process.getInputStream()));
String line = null;
while ((line = reader.readLine()) != null) {
Matcher matcher = pattern.matcher(line);
if (matcher.matches()) {
String[] stats = line.split(" +", -1);
long tmpTotal = 0;
for (int i = 1; i < stats.length; i++) {
tmpTotal += StringUtils.parseLongSafe(stats[i], 10);
}
total = tmpTotal;
}
break;
}
if (first) {
first = false;
} else {
Log.i(TAG, String.format("vsir cpu usage: %2.1f%%",
(double) (mypidStat - oldMypidStat)
/ (total - oldTotal) * 100));
}
reader.close();
} catch (IOException ex) {
ex.printStackTrace();
}
}
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