Function readLock

lib/index.js:5221–5233

(fun)

  // same as the writelock, but multiple can run at once
  function readLock(fun) {
    return function (...args) {
      db._queue.push({
        fun,
        args,
        type: 'read'
      });

      if (db._queue.length === 1) {
        nextTick(executeNext);
      }
    };
  }

  function formatSeq(n) {
    return ('0000000000000000' + n).slice(-16);