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Tim van der Lippe
e4974ddc4c
json.dump appears to add extraneous spaces before newline characters. By specifying the separators option, we can remove these whitespaces, reducing the diff noise. Solution taken from https://stackoverflow.com/questions/16311562/python-json-without-whitespaces DISABLE_THIRD_PARTY_CHECK=Fix whitespace in node_modules Change-Id: I26556e5053f19a9021ad41779319bdfe3f8c2b6c Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2013154 Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org> Commit-Queue: Mathias Bynens <mathias@chromium.org> Auto-Submit: Tim van der Lippe <tvanderlippe@chromium.org> Reviewed-by: Mathias Bynens <mathias@chromium.org>
qjobs
Efficient queue job manager module for nodejs.
Features
- Concurrency limiter
- Dynamic queue, a job can be added while the queue is running
- Optional delay before continuing after max concurrency has been reached
- Support of pause/unpause
- Events emitter based: start, end, sleep, continu, jobStart, jobEnd
- Quick statistic function, so you can know where the queue is, at regular interval
For what it can be usefull ?
Jobs which needs to run in parallels, but in a controled maner, example:
- Network scanners
- Parallels monitoring jobs
- Images/Videos related jobs
Compatibility :
- not tested with nodejs < 0.10
Examples
(take a look at tests directory if you are looking for running samples)
var qjobs = new require('./qjobs');
// My non blocking main job
var myjob = function(args,next) {
setTimeout(function() {
console.log('Do something interesting here',args);
next();
},1000);
}
var q = new qjobs({maxConcurrency:10});
// Let's add 30 job to the queue
for (var i = 0; i<30; i++) {
q.add(myjob,[i,'test '+i]);
}
q.on('start',function() {
console.log('Starting ...');
});
q.on('end',function() {
console.log('... All jobs done');
});
q.on('jobStart',function(args) {
console.log('jobStart',args);
});
q.on('jobEnd',function(args) {
console.log('jobend',args);
// If i'm jobId 10, then make a pause of 5 sec
if (args._jobId == 10) {
q.pause(true);
setTimeout(function() {
q.pause(false);
},5000);
}
});
q.on('pause',function(since) {
console.log('in pause since '+since+' milliseconds');
});
q.on('unpause',function() {
console.log('pause end, continu ..');
});
q.run();
//q.abort() will empty jobs list