javascript nodeJs 大数组处理抛出 RangeError: Maximum call stack size exceeded
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nodeJs huge array processing throws RangeError: Maximum call stack size exceeded
提问by Alber
This is part of code to proceed big number of entries ( originally its works with file system and make some operations with files) . Is there any nice way to bypass the limitation and prevent throwing of RangeError: Maximum call stack size exceeded( As for now it allows me to iterate about 3000 items )
这是处理大量条目的代码的一部分（最初它与文件系统一起工作并对文件进行一些操作）。有什么好的方法可以绕过限制并防止抛出RangeError: Maximum call stack size exceeded（至于现在它允许我迭代大约 3000 个项目）
var async = require('async')
, _u = require('underscore')
var tifPreview = function (item, callback) {
console.log(item)
return callback();
}
var tifQueue = async.queue(tifPreview, 2)
tifQueue.push(_u.range(0, 5000, 1))
回答by bevacqua
An option could be passing --max-stack-sizeto node.
一个选项可能是传递--max-stack-size给node.
node --max-stack-size 32000 app.js
For reference, use node -h
作为参考，使用 node -h
--max-stack-size=valset max v8 stack size (bytes)
--max-stack-size=val设置最大 v8 堆栈大小（字节）
Update
更新
Even though help prints it as --max-stack-size, in node -vv0.10.x+ you need to use --stack-sizeinstead.
尽管 help 将其打印为--max-stack-size，但node -vv0.10.x您需要在+ 中使用它--stack-size。
node --stack-size=32000 app.js
回答by Linus Unneb?ck
The problem is that you are making to many function calls. Setting the stack-sizeto a higher value will only increase the number of items you can handle, not solve the actual problem.
问题是您要进行许多函数调用。将 设置stack-size为更高的值只会增加您可以处理的项目数量，并不能解决实际问题。
You are calling the next iteration straight from your function, which makes it a recursive function. It's a bit hard to spot since it's going thru async.
您直接从您的函数调用下一次迭代，这使其成为递归函数。有点难发现，因为它正在通过async。
This code should work:
此代码应该工作：
var tifPreview = function (item, callback) {
console.log(item);
// defer the callback
setImmediate(callback);
}
Read more about the setImmediatefunction here:
http://nodejs.org/api/timers.html#timers_setimmediate_callback_arg
在setImmediate此处阅读有关该函数的更多信息：http:
//nodejs.org/api/timers.html#timers_setimmediate_callback_arg
