我对node.js应用程序有点困惑。据我所知,node.js在一个进程中运行。但是,如果我通过调用node app.js
来启动我的应用程序并使用htop监视它,我可以看到有4个子进程正在运行,我希望只有一个进程。
app.js
var express = require('express'),
routes = require('./routes'),
objects = require('./objects'),
http = require('http'),
path = require('path'),
pinLayout = objects.pinlayout,
// utils
util = require('util'),
wiringPi = require('wiring-pi'),
winston = require('winston'),
async = require('async');
// Logger - winston
var log = new(winston.Logger)({
transports: [
new(winston.transports.Console)({
colorize: true,
timestamp: true
}),
new(winston.transports.File)({
filename: './log/app.log'
})
]
});
// WiringPi
wiringPi.setup('gpio');
var app = express();
// all environments
app.set('port', process.env.PORT || 3001);
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.favicon());
app.use(express.logger('dev'));
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(require('less-middleware')({
src: __dirname + '/public',
force: true,
compress: true
}));
app.use(app.router);
app.use(express.static(path.join(__dirname, 'public')));
// 404 Page
app.use(function(req, res, next) {
res.render('404.jade', {
title: "404 - Page Not Found",
showFullNav: false,
status: 404,
url: req.url
});
});
// development only
if ('development' == app.get('env')) {
app.use(express.errorHandler({
dumpExceptions: true,
showStack: true
}));
}