test: use setImmediate() in test-heapdump-shadowrealm.js

With a tight loop the GC may not have enough time to kick in. Try setImmediate() instead. PR-URL: #49573 Refs: #49572 Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Chengzhong Wu <[email protected]>

Author: joyeecheung

test/pummel/test-heapdump-shadow-realm.js

@@ -4,29 +4,39 @@ require('../common');
 const{ validateSnapshotNodes }=require('../common/heap');
 
 validateSnapshotNodes('Node / ShadowRealm',[]);
-constrealm=newShadowRealm();
-{
-// Create a bunch of un-referenced ShadowRealms to make sure the heap
-// snapshot can handle it.
-for(leti=0;i<100;i++){
-constrealm=newShadowRealm();
+
+letrealm;
+letcounter=0;
+// Create a bunch of un-referenced ShadowRealms to make sure the heap
+// snapshot can handle it.
+functioncreateRealms(){
+// Use setImmediate to give GC some time to kick in to avoid OOM.
+if(counter++<100){
+realm=newShadowRealm();
+realm.evaluate('undefined');
+setImmediate(createRealms);
+}else{
+validateHeap();
+// Keep the realm alive.
 realm.evaluate('undefined');
 }
 }
-validateSnapshotNodes('Node / Environment',[
-{
-children: [
-{node_name: 'Node / shadow_realms',edge_name: 'shadow_realms'},
-],
-},
-]);
-validateSnapshotNodes('Node / shadow_realms',[
-{
-children: [
-{node_name: 'Node / ShadowRealm'},
-],
-},
-]);
 
-// Keep the realm alive.
-realm.evaluate('undefined');
+functionvalidateHeap(){
+validateSnapshotNodes('Node / Environment',[
+{
+children: [
+{node_name: 'Node / shadow_realms',edge_name: 'shadow_realms'},
+],
+},
+]);
+validateSnapshotNodes('Node / shadow_realms',[
+{
+children: [
+{node_name: 'Node / ShadowRealm'},
+],
+},
+]);
+}
+
+createRealms();