Android cpu data sample

素颜马尾好姑娘i 2023-11-20 06:18 100阅读 0赞

public class CPUManager extends Manager {
        public CPUManager(Config config) {
            super(config);
        }
    
        /**
         * 获取CPU型号。
         *
         * @return
         */
        public String getCpuName() {
            String str1 = "/proc/cpuinfo";
            String str2 = "";
    
            try {
                FileReader fr = new FileReader(str1);
                BufferedReader bufferedReader = new BufferedReader(fr);
                while ((str2 = bufferedReader.readLine()) != null) {
                    if (str2.contains("Hardware")) {
                        return str2.split(":")[1];
                    }
                }
                bufferedReader.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }
    
        /**
         * 获取CPU核心数。
         */
        public int getCpuCoreNum() {
            return Runtime.getRuntime().availableProcessors();
        }
    
        // 获取CPU最大频率。
        public long getMaxCpuFreq() {
            long result = 0L;
            try {
                String line;
                BufferedReader br = new BufferedReader(new FileReader("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq"));
                if ((line = br.readLine()) != null) {
                    result = Long.parseLong(line);
                }
                br.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            return result;
        }
    
        // 获取CPU最小频率。
        public long getMinCpuFreq() {
            long result = 0L;
            try {
                String line;
                BufferedReader br = new BufferedReader(new FileReader("/sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq"));
                if ((line = br.readLine()) != null) {
                    result = Long.parseLong(line);
                }
                br.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            return result;
        }
    
    
        // 实时获取CPU当前频率。
        public static String getCurCpuFreq() {
            String result = "";
            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 (Exception e) {
                e.printStackTrace();
            }
    
            return result;
        }
    
        /**
         * 是否是64位CPU架构。
         *
         * @return
         */
        public boolean isCpu64() {
            boolean result = false;
            String mProcessor = null;
            try {
                mProcessor = getFieldFromCpuinfo("Processor");
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            if (mProcessor != null) {
                if (mProcessor.contains("aarch64")) {
                    result = true;
                }
            }
    
            return result;
        }
    
    
        /*  cat /proc/cpuinfo 命令的输出：
    
            processor       : 0
            Processor       : AArch64 Processor rev 4 (aarch64)
            model name      : AArch64 Processor rev 4 (aarch64)
            BogoMIPS        : 26.00
            Features        : fp asimd evtstrm aes pmull sha1 sha2 crc32
            CPU implementer : 0x41
            CPU architecture: 8
            CPU variant     : 0x0
            CPU part        : 0xd03
            CPU revision    : 4
        */
        public String getFieldFromCpuinfo(String field) throws Exception {
            BufferedReader br = new BufferedReader(new FileReader("/proc/cpuinfo"));
            Pattern p = Pattern.compile(field + "\\s*:\\s*(.*)");
    
            try {
                String line;
                while ((line = br.readLine()) != null) {
                    Matcher m = p.matcher(line);
                    if (m.matches()) {
                        return m.group(1);
                    }
                }
            } finally {
                br.close();
            }
    
            return null;
        }
    
    
        // 获取应用占用的CPU时间。
        public long getAppCpuTime() {
            String[] cpuInfos = null;
            try {
                int pid = android.os.Process.myPid();
                BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream("/proc/" + pid + "/stat")), 1000);
                String load = reader.readLine();
                reader.close();
                cpuInfos = load.split(" ");
            } catch (Exception e) {
                e.printStackTrace();
            }
    
            long appCpuTime = Long.parseLong(cpuInfos[13]) + Long.parseLong(cpuInfos[14]) + Long.parseLong(cpuInfos[15]) + Long.parseLong(cpuInfos[16]);
    
            return appCpuTime;
        }
    }