Remove all AsyncListener JS code

doc/api/all.markdown

@@ -35,4 +35,3 @@
 @include debugger
 @include cluster
 @include smalloc
-@include tracing

lib/child_process.js

@@ -27,6 +27,7 @@ var assert = require('assert');
 var util = require('util');
 
 var Process = process.binding('process_wrap').Process;
+var WriteWrap = process.binding('stream_wrap').WriteWrap;
 var uv = process.binding('uv');
 
 var spawn_sync; // Lazy-loaded process.binding('spawn_sync')
@@ -473,7 +474,8 @@ function setupChannel(target, channel) {
       return;
     }
 
-    var req = { oncomplete: nop };
+    var req = new WriteWrap();
+    req.oncomplete = nop;
     var string = JSON.stringify(message) + '\n';
     var err = channel.writeUtf8String(req, string, handle);
 

lib/dgram.js

@@ -25,6 +25,7 @@ var events = require('events');
 var constants = require('constants');
 
 var UDP = process.binding('udp_wrap').UDP;
+var SendWrap = process.binding('udp_wrap').SendWrap;
 
 var BIND_STATE_UNBOUND = 0;
 var BIND_STATE_BINDING = 1;
@@ -317,7 +318,9 @@ Socket.prototype.send = function(buffer,
       self.emit('error', ex);
     }
     else if (self._handle) {
-      var req = { buffer: buffer, length: length };  // Keep reference alive.
+      var req = new SendWrap();
+      req.buffer = buffer;  // Keep reference alive.
+      req.length = length;
       if (callback) {
         req.callback = callback;
         req.oncomplete = afterSend;

lib/dns.js

@@ -25,6 +25,9 @@ var util = require('util');
 var cares = process.binding('cares_wrap');
 var uv = process.binding('uv');
 
+var GetAddrInfoReqWrap = cares.GetAddrInfoReqWrap;
+var GetNameInfoReqWrap = cares.GetNameInfoReqWrap;
+
 var isIp = net.isIP;
 
 
@@ -142,12 +145,11 @@ exports.lookup = function lookup(hostname, options, callback) {
     return {};
   }
 
-  var req = {
-    callback: callback,
-    family: family,
-    hostname: hostname,
-    oncomplete: onlookup
-  };
+  var req = new GetAddrInfoReqWrap();
+  req.callback = callback;
+  req.family = family;
+  req.hostname = hostname;
+  req.oncomplete = onlookup;
 
   var err = cares.getaddrinfo(req, hostname, family, hints);
   if (err) {
@@ -178,12 +180,12 @@ exports.lookupService = function(host, port, callback) {
 
   callback = makeAsync(callback);
 
-  var req = {
-    callback: callback,
-    host: host,
-    port: port,
-    oncomplete: onlookupservice
-  };
+  var req = new GetNameInfoReqWrap();
+  req.callback = callback;
+  req.host = host;
+  req.port = port;
+  req.oncomplete = onlookupservice;
+
   var err = cares.getnameinfo(req, host, port);
   if (err) throw errnoException(err, 'getnameinfo', host);