Because process.nextTick() semantics have changed, it now runs at the end of current tick. Use setImmediate().
2013/8/10 chamsae <[email protected]>: > > Hello, I am studying with "Professional Node.js by Pedro Teixeira" Korean > Edition. > In 55page, "Event Loop Blocking" section, I can't understand this code. > > > process.nextTick(function nextTick1(){ > var a = 0; > while(true){ > a++; > //console.log("CURRENT : "+a); > if(a%100000000==0){ > console.log("CURRENT PER LONGTIME : "+a); > } > > } > }); > > process.nextTick(function nextTick2(){ > console.log("Next Tick"); > }); > > > setTimeout(function timeout(){ > console.log("TIMEOUT"); > }, 1000); > > > RESULT > ================== > CURRENT PER LONGTIME : 100000000 > CURRENT PER LONGTIME : 200000000 > CURRENT PER LONGTIME : 300000000 > CURRENT PER LONGTIME : 400000000 > CURRENT PER LONGTIME : 500000000 > CURRENT PER LONGTIME : 600000000 > CURRENT PER LONGTIME : 700000000 > CURRENT PER LONGTIME : 800000000 > CURRENT PER LONGTIME : 900000000 > CURRENT PER LONGTIME : 1000000000 > CURRENT PER LONGTIME : 1100000000 > CURRENT PER LONGTIME : 1200000000 > CURRENT PER LONGTIME : 1300000000 > ... > ... > ... > > ================== > > nextTick2(), timeout() is never execute in this code's result. > only "while loop" would lasts. > I expected this, > > EXPECTED RESULT > ================== > CURRENT PER LONGTIME : 100000000 > CURRENT PER LONGTIME : 200000000 > CURRENT PER LONGTIME : 300000000 > CURRENT PER LONGTIME : 400000000 > CURRENT PER LONGTIME : 500000000 > CURRENT PER LONGTIME : 600000000 > CURRENT PER LONGTIME : 700000000 > NextTick > CURRENT PER LONGTIME : 800000000 > CURRENT PER LONGTIME : 900000000 > CURRENT PER LONGTIME : 1000000000 > CURRENT PER LONGTIME : 1100000000 > TIMEOUT > CURRENT PER LONGTIME : 1200000000 > CURRENT PER LONGTIME : 1300000000 > ... > ... > ... > > ================== > > how can I change this code to get "EXPECTED RESULT"? > > and if I add STDIN code like this, > > ================== > process.stdin.resume(); > process.stdin.setEncoding('utf8'); > > process.stdin.on('data', function(chunk) { > process.stdout.write('data: ' + chunk); > }); > > process.stdin.on('end', function() { > process.stdout.write('end'); > }); > > > process.nextTick(function nextTick1(){ > var a = 0; > while(true){ > a++; > //console.log("CURRENT : "+a); > if(a%100000000==0){ > console.log("CURRENT PER LONGTIME : "+a); > } > > } > }); > > process.nextTick(function nextTick2(){ > console.log("Next Tick"); > }); > > setTimeout(function timeout(){ > console.log("TIMEOUT"); > }, 1000); > > ================== > > this code's result emitted just only console.log() in "while loop". > Is this I/O Blocking? > node.js is non-block I/O? > > I am confused this concept. > I'm sorry for asking you easiest question. > > > > -- > -- > Job Board: http://jobs.nodejs.org/ > Posting guidelines: > https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines > You received this message because you are subscribed to the Google > Groups "nodejs" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nodejs?hl=en?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "nodejs" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. -- -- Job Board: http://jobs.nodejs.org/ Posting guidelines: https://github.com/joyent/node/wiki/Mailing-List-Posting-Guidelines You received this message because you are subscribed to the Google Groups "nodejs" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nodejs?hl=en?hl=en --- You received this message because you are subscribed to the Google Groups "nodejs" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
