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64 lines
1.7 KiB
CoffeeScript
64 lines
1.7 KiB
CoffeeScript
_ = require 'underscore'
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child_process = require 'child_process'
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EventEmitter = require 'event-emitter'
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# Public: Run a node script in a separate process.
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#
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# Used by the fuzzy-finder.
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module.exports =
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class Task
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_.extend @prototype, EventEmitter
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@once: (taskPath, args...) ->
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task = new Task(taskPath)
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task.one 'task:completed', -> task.terminate()
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task.start(args...)
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task
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callback: null
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constructor: (taskPath) ->
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bootstrap = """
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require('coffee-script');
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require('coffee-cache').setCacheDir('/tmp/atom-coffee-cache');
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Object.defineProperty(require.extensions, '.coffee', {
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writable: false,
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value: require.extensions['.coffee']
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});
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require('task-bootstrap');
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"""
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taskPath = require.resolve(taskPath)
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env = _.extend({}, process.env, {taskPath, userAgent: navigator.userAgent})
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args = [bootstrap, '--harmony_collections']
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@childProcess = child_process.fork '--eval', args, {env, cwd: __dirname}
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@on "task:log", -> console.log(arguments...)
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@on "task:warn", -> console.warn(arguments...)
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@on "task:error", -> console.error(arguments...)
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@on "task:completed", (args...) => @callback?(args...)
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@handleEvents()
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handleEvents: ->
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@childProcess.removeAllListeners()
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@childProcess.on 'message', ({event, args}) =>
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@trigger(event, args...)
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start: (args...) ->
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throw new Error("Cannot start terminated process") unless @childProcess?
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@handleEvents()
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@callback = args.pop() if _.isFunction(args[args.length - 1])
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@childProcess.send({args})
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terminate: ->
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return unless @childProcess?
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@childProcess.removeAllListeners()
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@childProcess.kill()
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@childProcess = null
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@off()
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