GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /usr/lib/node_modules/npm/node_modules/worker-farm/lib/farm.js
'use strict'

const DEFAULT_OPTIONS = {
          workerOptions               : {}
        , maxCallsPerWorker           : Infinity
        , maxConcurrentWorkers        : (require('os').cpus() || { length: 1 }).length
        , maxConcurrentCallsPerWorker : 10
        , maxConcurrentCalls          : Infinity
        , maxCallTime                 : Infinity // exceed this and the whole worker is terminated
        , maxRetries                  : Infinity
        , forcedKillTime              : 100
        , autoStart                   : false
        , onChild                     : function() {}
      }

const fork                    = require('./fork')
    , TimeoutError            = require('errno').create('TimeoutError')
    , ProcessTerminatedError  = require('errno').create('ProcessTerminatedError')
    , MaxConcurrentCallsError = require('errno').create('MaxConcurrentCallsError')


function Farm (options, path) {
  this.options     = Object.assign({}, DEFAULT_OPTIONS, options)
  this.path        = path
  this.activeCalls = 0
}


// make a handle to pass back in the form of an external API
Farm.prototype.mkhandle = function (method) {
  return function () {
    let args = Array.prototype.slice.call(arguments)
    if (this.activeCalls + this.callQueue.length >= this.options.maxConcurrentCalls) {
      let err = new MaxConcurrentCallsError('Too many concurrent calls (active: ' + this.activeCalls + ', queued: ' + this.callQueue.length + ')')
      if (typeof args[args.length - 1] == 'function')
        return process.nextTick(args[args.length - 1].bind(null, err))
      throw err
    }
    this.addCall({
        method   : method
      , callback : args.pop()
      , args     : args
      , retries  : 0
    })
  }.bind(this)
}


// a constructor of sorts
Farm.prototype.setup = function (methods) {
  let iface
  if (!methods) { // single-function export
    iface = this.mkhandle()
  } else { // multiple functions on the export
    iface = {}
    methods.forEach(function (m) {
      iface[m] = this.mkhandle(m)
    }.bind(this))
  }

  this.searchStart    = -1
  this.childId        = -1
  this.children       = {}
  this.activeChildren = 0
  this.callQueue      = []

  if (this.options.autoStart) {
    while (this.activeChildren < this.options.maxConcurrentWorkers)
      this.startChild()
  }

  return iface
}


// when a child exits, check if there are any outstanding jobs and requeue them
Farm.prototype.onExit = function (childId) {
  // delay this to give any sends a chance to finish
  setTimeout(function () {
    let doQueue = false
    if (this.children[childId] && this.children[childId].activeCalls) {
      this.children[childId].calls.forEach(function (call, i) {
        if (!call) return
        else if (call.retries >= this.options.maxRetries) {
          this.receive({
              idx   : i
            , child : childId
            , args  : [ new ProcessTerminatedError('cancel after ' + call.retries + ' retries!') ]
          })
        } else {
          call.retries++
          this.callQueue.unshift(call)
          doQueue = true
        }
      }.bind(this))
    }
    this.stopChild(childId)
    doQueue && this.processQueue()
  }.bind(this), 10)
}


// start a new worker
Farm.prototype.startChild = function () {
  this.childId++

  let forked = fork(this.path, this.options.workerOptions)
    , id     = this.childId
    , c      = {
          send        : forked.send
        , child       : forked.child
        , calls       : []
        , activeCalls : 0
        , exitCode    : null
      }

  this.options.onChild(forked.child);

  forked.child.on('message', function(data) {
    if (data.owner !== 'farm') {
      return;
    }
    this.receive(data);
  }.bind(this))
  forked.child.once('exit', function (code) {
    c.exitCode = code
    this.onExit(id)
  }.bind(this))

  this.activeChildren++
  this.children[id] = c
}


// stop a worker, identified by id
Farm.prototype.stopChild = function (childId) {
  let child = this.children[childId]
  if (child) {
    child.send({owner: 'farm', event: 'die'})
    setTimeout(function () {
      if (child.exitCode === null)
        child.child.kill('SIGKILL')
    }, this.options.forcedKillTime).unref()
    ;delete this.children[childId]
    this.activeChildren--
  }
}


// called from a child process, the data contains information needed to
// look up the child and the original call so we can invoke the callback
Farm.prototype.receive = function (data) {
  let idx     = data.idx
    , childId = data.child
    , args    = data.args
    , child   = this.children[childId]
    , call

  if (!child) {
    return console.error(
        'Worker Farm: Received message for unknown child. '
      + 'This is likely as a result of premature child death, '
      + 'the operation will have been re-queued.'
    )
  }

  call = child.calls[idx]
  if (!call) {
    return console.error(
        'Worker Farm: Received message for unknown index for existing child. '
      + 'This should not happen!'
    )
  }

  if (this.options.maxCallTime !== Infinity)
    clearTimeout(call.timer)

  if (args[0] && args[0].$error == '$error') {
    let e = args[0]
    switch (e.type) {
      case 'TypeError': args[0] = new TypeError(e.message); break
      case 'RangeError': args[0] = new RangeError(e.message); break
      case 'EvalError': args[0] = new EvalError(e.message); break
      case 'ReferenceError': args[0] = new ReferenceError(e.message); break
      case 'SyntaxError': args[0] = new SyntaxError(e.message); break
      case 'URIError': args[0] = new URIError(e.message); break
      default: args[0] = new Error(e.message)
    }
    args[0].type = e.type
    args[0].stack = e.stack

    // Copy any custom properties to pass it on.
    Object.keys(e).forEach(function(key) {
      args[0][key] = e[key];
    });
  }

  process.nextTick(function () {
    call.callback.apply(null, args)
  })

  ;delete child.calls[idx]
  child.activeCalls--
  this.activeCalls--

  if (child.calls.length >= this.options.maxCallsPerWorker
      && !Object.keys(child.calls).length) {
    // this child has finished its run, kill it
    this.stopChild(childId)
  }

  // allow any outstanding calls to be processed
  this.processQueue()
}


Farm.prototype.childTimeout = function (childId) {
  let child = this.children[childId]
    , i

  if (!child)
    return

  for (i in child.calls) {
    this.receive({
        idx   : i
      , child : childId
      , args  : [ new TimeoutError('worker call timed out!') ]
    })
  }
  this.stopChild(childId)
}


// send a call to a worker, identified by id
Farm.prototype.send = function (childId, call) {
  let child = this.children[childId]
    , idx   = child.calls.length

  child.calls.push(call)
  child.activeCalls++
  this.activeCalls++

  child.send({
      owner  : 'farm'
    , idx    : idx
    , child  : childId
    , method : call.method
    , args   : call.args
  })

  if (this.options.maxCallTime !== Infinity) {
    call.timer =
      setTimeout(this.childTimeout.bind(this, childId), this.options.maxCallTime)
  }
}


// a list of active worker ids, in order, but the starting offset is
// shifted each time this method is called, so we work our way through
// all workers when handing out jobs
Farm.prototype.childKeys = function () {
  let cka = Object.keys(this.children)
    , cks

  if (this.searchStart >= cka.length - 1)
    this.searchStart = 0
  else
    this.searchStart++

  cks = cka.splice(0, this.searchStart)

  return cka.concat(cks)
}


// Calls are added to a queue, this processes the queue and is called
// whenever there might be a chance to send more calls to the workers.
// The various options all impact on when we're able to send calls,
// they may need to be kept in a queue until a worker is ready.
Farm.prototype.processQueue = function () {
  let cka, i = 0, childId

  if (!this.callQueue.length)
    return this.ending && this.end()

  if (this.activeChildren < this.options.maxConcurrentWorkers)
    this.startChild()

  for (cka = this.childKeys(); i < cka.length; i++) {
    childId = +cka[i]
    if (this.children[childId].activeCalls < this.options.maxConcurrentCallsPerWorker
        && this.children[childId].calls.length < this.options.maxCallsPerWorker) {

      this.send(childId, this.callQueue.shift())
      if (!this.callQueue.length)
        return this.ending && this.end()
    } /*else {
      console.log(
        , this.children[childId].activeCalls < this.options.maxConcurrentCallsPerWorker
        , this.children[childId].calls.length < this.options.maxCallsPerWorker
        , this.children[childId].calls.length , this.options.maxCallsPerWorker)
    }*/
  }

  if (this.ending)
    this.end()
}


// add a new call to the call queue, then trigger a process of the queue
Farm.prototype.addCall = function (call) {
  if (this.ending)
    return this.end() // don't add anything new to the queue
  this.callQueue.push(call)
  this.processQueue()
}


// kills child workers when they're all done
Farm.prototype.end = function (callback) {
  let complete = true
  if (this.ending === false)
    return
  if (callback)
    this.ending = callback
  else if (this.ending == null)
    this.ending = true
  Object.keys(this.children).forEach(function (child) {
    if (!this.children[child])
      return
    if (!this.children[child].activeCalls)
      this.stopChild(child)
    else
      complete = false
  }.bind(this))

  if (complete && typeof this.ending == 'function') {
    process.nextTick(function () {
      this.ending()
      this.ending = false
    }.bind(this))
  }
}


module.exports              = Farm
module.exports.TimeoutError = TimeoutError

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