1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
define.class('$system/base/worker', function(require, exports){
var rpchub = require('$system/rpc/rpchub')
this._allocPromise = rpchub.allocPromise
this._resolveReturn = rpchub.resolveReturn
this._startWorkers = function(head, tail, count){
if(!count) count = 1
var source = head + '\n\n\n;// Worker includes \nself.define = {packaged:true,$platform:"webgl"};(' + define.inner.toString() + ')();\n'
source += '(' + define.getModule('$system/base/math.js').factory.toString() + ')();\n'
for(var key in define.paths){
source += 'define.$'+key + ' = "'+define['$'+key]+'";\n'
}
source += tail
var blob = new Blob([source], { type: "text/javascript" })
var worker_url = URL.createObjectURL(blob)
var workers = []
for(var i = 0; i < count; i ++){
var worker = new Worker(worker_url)
worker.postMessage({initid:true, workerid:i})
worker.source = source
worker.stack = 0
workers.push(worker)
}
return workers
}
this._collectDeps = function(factory, extradeps){
var outdeps = {}
function collectBodyDeps(body){
var intreq = define.findRequiresInFactory(body)
for(var j = 0 ; j < intreq.length; j++){
intreq[j] = define.expandVariables(intreq[j])
}
if(intreq.length) collectDeps(intreq)
}
function collectDeps(deps){
if(!deps) return
for(var i = 0; i < deps.length; i++){
var dep = deps[i]
if(outdeps[dep] || outdeps[dep+'.js']) continue
var module = define.getModule(dep)
if(!module) module = define.getModule(dep+'.js'), dep += '.js'
if(!module || !module.factory || typeof module.factory !== 'function') continue
outdeps[dep] = 1
if(module.factory.body){
collectBodyDeps(module.factory.body)
}
collectDeps(module.factory.deps)
if(module.factory.body){
var str = 'define.packagedClass("'+dep+'",['
if(module.factory.baseclass) str += '"'+module.factory.baseclass+'",'
str += module.factory.body.toString() + ']);\n'
outdeps[dep] = str
}
else{
outdeps[dep] = 'define(' + module.factory.toString() + ',"'+dep+'");\n'
}
}
}
collectDeps(factory.deps)
collectDeps(extradeps)
collectBodyDeps(factory.body)
return outdeps
}
this._transformThisToRPC = function(){
for(var key in this){
var prop = this[key]
if(key === 'onmessage'){
}
else if(key === 'atConstructor'){
this[key] = undefined
}
else if(typeof prop === 'function' && key[0] !== '_'){
this[key] = function(key){
var min = Infinity, tgtid = 0
for(var i = 0; i < this._workers.length; i++){
var stack = this._workers[i].stack
if(stack < min) min = stack, tgtid = i
}
var msg = {type:'call', name:key, args:[], workerid:tgtid}
for(var i = 1; i < arguments.length; i++){
msg.args[i - 1] = arguments[i]
}
var worker = this._workers[tgtid]
if(!worker) return new define.Promise(function(resolve){resolve()})
var prom = this._allocPromise()
msg.uid = prom.uid
this._workers[tgtid].stack++
this._workers[tgtid].postMessage(msg)
return prom
}.bind(this,key)
}
}
}
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)
var head = 'var _myworker = ' + this.constructor.body.toString() + ';\n'
var tail = ''
for(var key in deps){
tail += deps[key]
}
tail += 'define.packagedClass("/myworker.js",["$system/base/worker",_myworker]);\n'
tail += 'var _worker = define.require(\'/myworker\')();\n'
tail += '_worker.postMessage = function(msg,transfer){self.postMessage({message:msg,workerid:_worker.workerid},transfer)};\n'
tail += _worker_return.toString() + ';\n'
function workermsg(event){
var msg = event.data
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){
_worker_return(value, msg.uid, msg.workerid)
})
else _worker_return(ret, msg.uid, msg.workerid)
}
function _worker_return(ret, uid, workerid){
var transfer
if(ret && (typeof ret === 'object' || Array.isArray(ret))){
for(var key in ret){
var prop = ret[key]
if(prop && typeof prop.struct === 'function' && prop.array){
transfer = transfer || []
transfer.push(prop.array.buffer)
ret[key] = {
allocated: prop.allocated,
array:prop.array,
length: prop.length,
slots: prop.slots,
stride: prop.stride,
__structarray__: prop.struct.name
}
}
}
}
self.postMessage({value:ret, uid:uid, workerid:workerid}, transfer)
}
tail += 'self.onmessage = ' + workermsg.toString() + '\n'
var onmessage = function(event){
var dt = Date.now()
var data = event.data
if(data.message){
return this.onmessage(data.message)
}
var workerid = data.workerid
this._workers[workerid].stack --
this._resolveReturn(data)
}.bind(this)
this._workers = this._startWorkers(head, tail, cores)
for(var i = 0; i < this._workers.length; i++){
this._workers[i].onmessage = onmessage
}
this._transformThisToRPC()
this.postMessage = function(msg, transfer, tgtid){
var workerid = tgtid || 0
this._workers[workerid].postMessage({message:msg}, transfer)
}
}
})
|