to avoid deadlock, don't refresh VFS during service initialization, instead refresh asynchronously during plugin initialization

idea/idea-analysis/src/org/jetbrains/kotlin/idea/references/BuiltInsReferenceResolver.kt

@@ -94,12 +94,7 @@ public class BuiltInsReferenceResolver(val project: Project, val startupManager:
         val vf = VirtualFileManager.getInstance().findFileByUrl(fromUrl)
         assert(vf != null) { "Virtual file not found by URL: $url" }
 
-        // Refreshing VFS: in case the plugin jar was updated, the caches may hold the old value
+        val psiDirectory = PsiManager.getInstance(project).findDirectory(vf!!)
-        vf!!.getChildren()
-        vf.refresh(false, true)
-        PathUtil.getLocalFile(vf).refresh(false, true)
-
-        val psiDirectory = PsiManager.getInstance(project).findDirectory(vf)
         assert(psiDirectory != null) { "No PsiDirectory for $vf" }
         return psiDirectory!!.getFiles().filterIsInstance<JetFile>().toHashSet()
     }
@@ -188,5 +183,18 @@ public class BuiltInsReferenceResolver(val project: Project, val startupManager:
             }
             return setOf(defaultBuiltIns)
         }
+
+        public fun refreshBuiltIns() {
+            getBuiltInsDirUrls().forEach { url ->
+                val fromUrl = VfsUtilCore.convertFromUrl(url)
+                val vf = VirtualFileManager.getInstance().findFileByUrl(fromUrl)
+                assert(vf != null) { "Virtual file not found by URL: $url" }
+
+                // Refreshing VFS: in case the plugin jar was updated, the caches may hold the old value
+                vf!!.getChildren()
+                vf.refresh(true, true)
+                PathUtil.getLocalFile(vf).refresh(true, true)
+            }
+        }
     }
 }

idea/src/org/jetbrains/kotlin/idea/PluginStartupComponent.java

@@ -24,6 +24,7 @@ import org.jetbrains.kotlin.idea.caches.JarUserDataManager;
 import org.jetbrains.kotlin.idea.debugger.filter.DebuggerFiltersUtilKt;
 import org.jetbrains.kotlin.idea.decompiler.HasCompiledKotlinInJar;
 import org.jetbrains.kotlin.idea.framework.KotlinJavaScriptLibraryDetectionUtil;
+import org.jetbrains.kotlin.idea.references.BuiltInsReferenceResolver;
 import org.jetbrains.kotlin.utils.PathUtil;
 
 import java.io.File;
@@ -49,6 +50,8 @@ public class PluginStartupComponent implements ApplicationComponent {
         JarUserDataManager.INSTANCE$.register(KotlinJavaScriptLibraryDetectionUtil.HasKotlinJSMetadataInJar.INSTANCE$);
         JarUserDataManager.INSTANCE$.register(HasCompiledKotlinInJar.INSTANCE$);
 
+        BuiltInsReferenceResolver.Companion.refreshBuiltIns();
+
         DebuggerFiltersUtilKt.addKotlinStdlibDebugFilterIfNeeded();
     }