timers: add helper fn for async init

There are currently 3 places in Timers where the exact same code
appears. Instead create a helper function that does the same job
of setting asyncId & triggerAsyncId, as well as calling emitInit.

PR-URL: https://github.com/nodejs/node/pull/18825
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

1 files changed, 10 insertions, 8 deletions

diff --git a/lib/internal/timers.js b/lib/internal/timers.js
index 0c140811f8..8c1a87a65f 100644
--- a/lib/internal/timers.js
+++ b/lib/internal/timers.js
@@ -24,6 +24,7 @@ module.exports = {
   async_id_symbol,
   trigger_async_id_symbol,
   Timeout,
+  initAsyncResource,
   refreshFnSymbol,
   setUnrefTimeout,
   validateTimerDuration
@@ -37,6 +38,14 @@ function getTimers() {
   return timers;
 }
 
+function initAsyncResource(resource, type) {
+  const asyncId = resource[async_id_symbol] = newAsyncId();
+  const triggerAsyncId =
+    resource[trigger_async_id_symbol] = getDefaultTriggerAsyncId();
+  if (initHooksExist())
+    emitInit(asyncId, type, triggerAsyncId, resource);
+}
+
 // Timer constructor function.
 // The entire prototype is defined in lib/timers.js
 function Timeout(callback, after, args, isRepeat, isUnrefed) {
@@ -66,14 +75,7 @@ function Timeout(callback, after, args, isRepeat, isUnrefed) {
 
   this[unrefedSymbol] = isUnrefed;
 
-  this[async_id_symbol] = newAsyncId();
-  this[trigger_async_id_symbol] = getDefaultTriggerAsyncId();
-  if (initHooksExist()) {
-    emitInit(this[async_id_symbol],
-             'Timeout',
-             this[trigger_async_id_symbol],
-             this);
-  }
+  initAsyncResource(this, 'Timeout');
 }
 
 Timeout.prototype[refreshFnSymbol] = function refresh() {