Function readline

lib/internal/v8_prof_polyfill.js:115–136

()

}

function readline() {
  while (true) {
    const lineBreak = line.indexOf('\n');
    if (lineBreak !== -1) {
      const res = line.slice(0, lineBreak);
      line = line.slice(lineBreak + 1);
      return res;
    }
    const bytes = fs.readSync(fd, buf, 0, buf.length);
    line += dec.write(buf.slice(0, bytes));
    if (line.length === 0) {
      return '';
    }
    if (bytes === 0) {
      process.emitWarning(`Profile file ${logFile} is broken`, {
        code: 'BROKEN_PROFILE_FILE',
        detail: `${JSON.stringify(line)} at the file end is broken`,
      });
      return '';
    }
  }
}

function versionCheck(firstLine, expected) {
  // v8-version looks like