timer,domain: maintain order of timer callbacks

PR-URL: #10522
Fixes: #1271
Reviewed-By: Sam Roberts <vieuxtech@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>

Author: jBarz

lib/timers.js

@@ -156,12 +156,19 @@ function TimersList(msecs, unrefed) {
   this._timer = new TimerWrap();
   this._unrefed = unrefed;
   this.msecs = msecs;
+  this.nextTick = false;
 }
 
 function listOnTimeout() {
   var list = this._list;
   var msecs = list.msecs;
 
+  if (list.nextTick) {
+    list.nextTick = false;
+    process.nextTick(listOnTimeoutNT, list);
+    return;
+  }
+
   debug('timeout callback %d', msecs);
 
   var now = TimerWrap.now();
@@ -239,6 +246,14 @@ function tryOnTimeout(timer, list) {
   } finally {
     if (!threw) return;
 
+    // Postpone all later list events to next tick. We need to do this
+    // so that the events are called in the order they were created.
+    const lists = list._unrefed === true ? unrefedLists : refedLists;
+    for (var key in lists) {
+      if (key > list.msecs) {
+        lists[key].nextTick = true;
+      }
+    }
     // We need to continue processing after domain error handling
     // is complete, but not by using whatever domain was left over
     // when the timeout threw its exception.

test/parallel/test-domain-timers-uncaught-exception.js

@@ -0,0 +1,25 @@
+'use strict';
+const common = require('../common');
+
+// This test ensures that the timer callbacks are called in the order in which
+// they were created in the event of an unhandled exception in the domain.
+
+const domain = require('domain').create();
+const assert = require('assert');
+
+let first = false;
+
+domain.run(function() {
+  setTimeout(() => { throw new Error('FAIL'); }, 1);
+  setTimeout(() => { first = true; }, 1);
+  setTimeout(() => { assert.strictEqual(first, true); }, 2);
+
+  // Ensure that 2 ms have really passed
+  let i = 1e6;
+  while (i--);
+});
+
+domain.once('error', common.mustCall((err) => {
+  assert(err);
+  assert.strictEqual(err.message, 'FAIL');
+}));