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define.class('$system/platform/webgl/workerwebgl', function(require, exports){
var rpchub = require('$system/rpc/rpchub')
var NodeWebsocket = require('$system/server/nodewebsocket')
var child_process = require('child_process')
var crypto = require('crypto')
var fs = require('fs')
this._startWorkers = function(head, tail, count){
if(!count) count = 1
var source = head + '\n\n\n;// Worker includes \nglobal.define = {packaged:true,$platform:"nodegl"};(' + define.inner.toString() + ')();\n'
source += '(' + define.getModule('$system/base/math.js').factory.toString() + ')();\n'
var paths = ''
for(var key in define.paths){
paths += 'define.$'+key + ' = "'+define['$'+key]+'";\n'
}
source += paths
source += tail
var shasum = crypto.createHash('sha1').update(source).digest('hex');
var path = define.mapToCacheDir('/'+shasum)
fs.writeFileSync(path, source)
var workers = []
for(var i = 0; i < count; i ++){
var subarg = [path]
var stdio = [process.stdin, process.stdout, process.stderr, 'pipe']
var child = child_process.spawn(process.execPath, subarg, {
stdio: stdio
})
var sock = new NodeWebsocket(child.stdio[3])
sock.makeJSONSocket()
child.on('close', function(code){
}.bind(this))
sock.child_process = child
workers.push(sock)
}
return workers
}
this._atConstructor = function(cores){
if(cores === undefined) cores = 1
else if(cores < 1){
if(define.cputhreads === 2) cores = 1
else cores = define.cputhreads - 2
}
var deps = this._collectDeps(this.constructor.module.factory, [define.expandVariables('$system/server/nodewebsocket'),define.expandVariables("$system/base/worker")])
var head = 'var _myworker = ' + this.constructor.body.toString() + ';\n'
var tail = ''
tail += 'define.packagedClass("/myworker.js",["$system/base/worker",_myworker]);\n'
for(var key in deps){
tail += deps[key]
}
tail += ';(' + worker_boot.toString() + ')();\n'
this._workers = this._startWorkers(head, tail, 1)
this._transformThisToRPC()
function worker_boot(){
var net = require('net')
var worker = define.require('/myworker')()
var NodeWebsocket = define.require("$system/server/nodewebsocket")
var io = new net.Socket({fd:3})
var sock = worker._socket = new NodeWebsocket(io)
sock.makeJSONSocket()
worker.postMessage = function(msg){
sock.sendJSON({message:msg})
}
sock.atJSONMessage = function(msg){
if(msg.initid){
worker.workerid = msg.workerid
return
}
if(msg.message){
worker.onmessage(msg.message)
return
}
var ret = worker[msg.name].apply(worker, msg.args);
if(ret && ret.then) ret.then(function(value){
sock.sendJSON({value:value, uid:msg.uid, workerid:msg.workerid})
})
else sock.sendJSON({value:ret, uid:msg.uid, workerid:msg.workerid})
}
}
for(var i = 0; i < this._workers.length; i++){
this._workers[i].postMessage = function(msg){
this.sendJSON(msg)
}
this._workers[i].atJSONMessage = function(data){
if(data.message){
return this.onmessage(data.message)
}
var workerid = data.workerid
this._workers[workerid].stack --
this._resolveReturn(data)
}.bind(this)
}
this.postMessage = function(msg, transfer, tgtid){
var workerid = tgtid || 0
this._workers[workerid].postMessage({message:msg})
}
}
})
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