testing/xpcshell/node-spdy/lib/spdy/scheduler.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/testing/xpcshell/node-spdy/lib/spdy/scheduler.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,60 @@
     1.4 +var scheduler = exports;
     1.5 +
     1.6 +//
     1.7 +// ### function Scheduler (connection)
     1.8 +// #### @connection {spdy.Connection} active connection
     1.9 +// Connection's streams scheduler
    1.10 +//
    1.11 +function Scheduler(connection) {
    1.12 +  this.connection = connection;
    1.13 +  this.priorities = [[], [], [], [], [], [], [], []];
    1.14 +  this._tickListener = null;
    1.15 +}
    1.16 +
    1.17 +//
    1.18 +// ### function create (connection)
    1.19 +// #### @connection {spdy.Connection} active connection
    1.20 +//
    1.21 +exports.create = function create(connection) {
    1.22 +  return new Scheduler(connection);
    1.23 +};
    1.24 +
    1.25 +//
    1.26 +// ### function schedule (stream, data)
    1.27 +// #### @stream {spdy.Stream} Source stream
    1.28 +// #### @data {Buffer} data to write on tick
    1.29 +// Use stream priority to invoke callbacks in right order
    1.30 +//
    1.31 +Scheduler.prototype.schedule = function schedule(stream, data) {
    1.32 +  this.priorities[stream.priority].push(data);
    1.33 +};
    1.34 +
    1.35 +//
    1.36 +// ### function tick ()
    1.37 +// Add .nextTick callback if not already present
    1.38 +//
    1.39 +Scheduler.prototype.tick = function tick() {
    1.40 +  if (this._tickListener !== null) return;
    1.41 +  var self = this;
    1.42 +  this._tickListener = function() {
    1.43 +    var priorities = self.priorities;
    1.44 +
    1.45 +    self._tickListener = null;
    1.46 +    self.priorities = [[], [], [], [], [], [], [], []];
    1.47 +
    1.48 +    // Run all priorities
    1.49 +    for (var i = 0; i < 8; i++) {
    1.50 +      for (var j = 0; j < priorities[i].length; j++) {
    1.51 +        self.connection.write(
    1.52 +          priorities[i][j]
    1.53 +        );
    1.54 +      }
    1.55 +    }
    1.56 +  };
    1.57 +
    1.58 +  if (this.connection.parser.drained) {
    1.59 +    process.nextTick(this._tickListener);
    1.60 +  } else {
    1.61 +    this.connection.parser.once('drain', this._tickListener);
    1.62 +  }
    1.63 +};

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