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- Settings = require('settings-sharelatex')
- logger = require('logger-sharelatex')
- deltaMs = (ta, tb) ->
- nanoSeconds = (ta[0]-tb[0])*1e9 + (ta[1]-tb[1])
- milliSeconds = Math.floor(nanoSeconds*1e-6)
- return milliSeconds
- module.exports = class Profiler
- LOG_CUTOFF_TIME: 1000
- constructor: (@name, @args) ->
- @t0 = @t = process.hrtime()
- @start = new Date()
- @updateTimes = []
- log: (label) ->
- t1 = process.hrtime()
- dtMilliSec = deltaMs(t1, @t)
- @t = t1
- @updateTimes.push [label, dtMilliSec] # timings in ms
- return @ # make it chainable
- end: (message) ->
- totalTime = deltaMs(@t, @t0)
- if totalTime > @LOG_CUTOFF_TIME # log anything greater than cutoff
- args = {}
- for k,v of @args
- args[k] = v
- args.updateTimes = @updateTimes
- args.start = @start
- args.end = new Date()
- logger.log args, @name
- return totalTime
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