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PR-URL: https://github.com/nodejs/node/pull/46697 Reviewed-By: Moshe Atlow <moshe@atlow.co.il> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
34 lines
640 B
JavaScript
34 lines
640 B
JavaScript
'use strict';
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const binding = internalBinding('performance');
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const {
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milestones,
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getTimeOrigin,
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} = binding;
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// TODO(joyeecheung): we may want to warn about access to
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// this during snapshot building.
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let timeOrigin = getTimeOrigin();
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function now() {
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const hr = process.hrtime();
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return (hr[0] * 1000 + hr[1] / 1e6) - timeOrigin;
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}
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function getMilestoneTimestamp(milestoneIdx) {
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const ns = milestones[milestoneIdx];
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if (ns === -1)
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return ns;
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return ns / 1e6 - timeOrigin;
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}
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function refreshTimeOrigin() {
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timeOrigin = getTimeOrigin();
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}
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module.exports = {
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now,
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getMilestoneTimestamp,
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refreshTimeOrigin,
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};
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