shared-indexes: fix plugin unloading leak, cleanup dispose of SerializationManagerImpl, IDEA-247481

GitOrigin-RevId: 2668a3015b3c0b0759be8c9adef5791558d93441

platform/indexing-impl/src/com/intellij/psi/stubs/SerializationManagerImpl.java

@@ -55,7 +55,7 @@ public final class SerializationManagerImpl extends SerializationManagerEx imple
       nameStorageCrashed();
     }
     finally {
-      ShutDownTracker.getInstance().registerShutdownTask(this::performShutdown);
+      ShutDownTracker.getInstance().registerShutdownTask(this::performShutdown, this);
     }
 
     StubElementTypeHolderEP.EP_NAME.addChangeListener(this::dropSerializerData, this);

platform/util/src/com/intellij/openapi/util/ShutDownTracker.java

@@ -1,6 +1,7 @@
 // Copyright 2000-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
 package com.intellij.openapi.util;
 
+import com.intellij.openapi.Disposable;
 import com.intellij.openapi.diagnostic.Logger;
 import org.jetbrains.annotations.NotNull;
 
@@ -104,6 +105,11 @@ public final class ShutDownTracker implements Runnable {
     myThreads.remove(thread);
   }
 
+  public void registerShutdownTask(@NotNull Runnable task, @NotNull Disposable parentDisposable) {
+    registerShutdownTask(task);
+    Disposer.register(parentDisposable, () -> unregisterShutdownTask(task));
+  }
+
   public synchronized void registerShutdownTask(@NotNull Runnable task) {
     myShutdownTasks.addLast(task);
   }