Mega Code Archive
Get CPU Frequency Min
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//package org.anddev.andengine.util;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Method;
import java.util.Scanner;
import java.util.regex.MatchResult;
import android.content.Context;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
/**
* (c) 2010 Nicolas Gramlich
* (c) 2011 Zynga Inc.
*
* @author Nicolas Gramlich
* @since 15:50:31 - 14.07.2010
*/
class SystemUtils {
private static final String BOGOMIPS_PATTERN = "BogoMIPS[\\s]*:[\\s]*(\\d+\\.\\d+)[\\s]*\n";
private static final String MEMTOTAL_PATTERN = "MemTotal[\\s]*:[\\s]*(\\d+)[\\s]*kB\n";
private static final String MEMFREE_PATTERN = "MemFree[\\s]*:[\\s]*(\\d+)[\\s]*kB\n";
/**
* @return in kiloHertz.
* @throws SystemUtilsException
*/
public static int getCPUFrequencyMin() throws Exception {
return SystemUtils.readSystemFileAsInt("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq");
}
private static int readSystemFileAsInt(final String pSystemFile) throws Exception {
InputStream in = null;
try {
final Process process = new ProcessBuilder(new String[] { "/system/bin/cat", pSystemFile }).start();
in = process.getInputStream();
final String content = readFully(in);
return Integer.parseInt(content);
} catch (final Exception e) {
throw new Exception(e);
}
}
public static final String readFully(final InputStream pInputStream) throws IOException {
final StringBuilder sb = new StringBuilder();
final Scanner sc = new Scanner(pInputStream);
while(sc.hasNextLine()) {
sb.append(sc.nextLine());
}
return sb.toString();
}
private static MatchResult matchSystemFile(final String pSystemFile, final String pPattern, final int pHorizon) throws Exception {
InputStream in = null;
try {
final Process process = new ProcessBuilder(new String[] { "/system/bin/cat", pSystemFile }).start();
in = process.getInputStream();
final Scanner scanner = new Scanner(in);
final boolean matchFound = scanner.findWithinHorizon(pPattern, pHorizon) != null;
if(matchFound) {
return scanner.match();
} else {
throw new Exception();
}
} catch (final IOException e) {
throw new Exception(e);
}
}
}
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