获取CPU核数，对于获取CPU核数目前没有接口获取，可以通过读取文件的形式来间接获取CPU的核数

function readWriteFile(): void { 
  // 打开文件 
 
  let destFile = fs.openSync(filesDir + '/test.txt', fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE); 
  let srcFile = fs.openSync("/proc" + '/cpuinfo', fs.OpenMode.READ_ONLY); 
  // 读取源文件内容并写入至目的文件 
  let bufSize = 4096; 
  let readSize = 0; 
  let buf = new ArrayBuffer(bufSize); 
  let readOptions: ReadOptions = { 
    offset: readSize, 
    length: bufSize 
  }; 
  let readLen = fs.readSync(srcFile.fd, buf, readOptions); 
  while (readLen > 0) { 
    readSize += readLen; 
    fs.writeSync(destFile.fd, buf); 
    readOptions.offset = readSize; 
    readLen = fs.readSync(srcFile.fd, buf, readOptions); 
  } 
  // 关闭文件 
  fs.closeSync(srcFile); 
  fs.closeSync(destFile); 
 
 
  let filePath = filesDir + "/test.txt"; 
  // // let filePath = "/proc/cpuinfo"; 
  let readTextOptions: ReadTextOptions = { 
    offset: 1, 
    length: 0, 
    encoding: 'utf-8' 
  }; 
  let stat = fs.statSync(filePath); 
  readTextOptions.length = stat.size; 
  let str = fs.readTextSync(filePath, readTextOptions); 
 
  // console.info("readText succeed:" + str); 
  console.log("testTage--CPU核数为：" + countAbcOccurrences(str,"processor") + "核") 
} 
 
 
function getListFile(): void { 
  let filesDir = "/sys/devices/system/cpu"; 
 
  let listFileOption: ListFileOptions = { 
    recursion: false, 
    listNum: 0, 
    filter: {} 
  }; 
 
  if(listFileOption.filter != undefined){ 
    listFileOption.filter.displayName = ['cpu*'];                    // 匹配文件全名以'test'开头 
  } 
 
  let files = fs.listFileSync(filesDir, listFileOption); 
  // console.log("testTag" + files.length) 
  let count = 0; 
  for (let i = 0; i < files.length; i++) { 
    if(files[i].toString().length > 3 &&!isNaN(parseInt(files[i].toString()[3]))){ 
      // console.info(`The name of file: ${files[i]}`); 
      count++; 
    } 
  } 
  console.log("testTage------ CPU核数为：" + count + "核") 
  // console.log("testTag" + filesDir) 
}
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