perf_hooks: import http2 only once

Import http2 internal bindings on each collectHttp2Stats call is not required. PR-URL: #29419 Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: David Carlier <[email protected]> Reviewed-By: Trivikram Kamat <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Minwoo Jung <[email protected]>
nodejs · Sep 20, 2019 · b30c40b · b30c40b
1 parent 844b45b
commit b30c40b
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/perf_hooks.js b/lib/perf_hooks.js
@@ -92,11 +92,12 @@ const IDX_SESSION_STATS_DATA_SENT = 6;
 const IDX_SESSION_STATS_DATA_RECEIVED = 7;
 const IDX_SESSION_STATS_MAX_CONCURRENT_STREAMS = 8;
 
+let http2;
 let sessionStats;
 let streamStats;
 
 function collectHttp2Stats(entry) {
-  const http2 = internalBinding('http2');
+  if (http2 === undefined) http2 = internalBinding('http2');
   switch (entry.name) {
     case 'Http2Stream':
       if (streamStats === undefined)