All files / lib/internal/perf utils.js

100% Statements 33/33
100% Branches 6/6
100% Functions 3/3
100% Lines 33/33

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 3417x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 17x 114101x 114101x 114101x 114101x 17x 239x 239x 239x 239x 186x 239x 17x 5392x 5392x 5392x 17x 17x 17x 17x 17x 17x  
'use strict';
 
const binding = internalBinding('performance');
const {
  milestones,
  getTimeOrigin,
} = binding;
 
// TODO(joyeecheung): we may want to warn about access to
// this during snapshot building.
let timeOrigin = getTimeOrigin();
 
function now() {
  const hr = process.hrtime();
  return (hr[0] * 1000 + hr[1] / 1e6) - timeOrigin;
}
 
function getMilestoneTimestamp(milestoneIdx) {
  const ns = milestones[milestoneIdx];
  if (ns === -1)
    return ns;
  return ns / 1e6 - timeOrigin;
}
 
function refreshTimeOrigin() {
  timeOrigin = getTimeOrigin();
}
 
module.exports = {
  now,
  getMilestoneTimestamp,
  refreshTimeOrigin
};