Suppress low memory notifications and restrict max wait time when unloading plugins (IDEA-225451)

GitOrigin-RevId: 41945ba547de7a7e449bb7a549551cc5ef652a59

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

@@ -1,18 +1,4 @@
-/*
- * Copyright 2000-2016 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
+// Copyright 2000-2019 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;
@@ -21,6 +7,8 @@ import com.intellij.util.containers.WeakList;
 import org.jetbrains.annotations.Contract;
 import org.jetbrains.annotations.NotNull;
 
+import java.util.concurrent.atomic.AtomicBoolean;
+
 /**
  * @author Eugene Zhuravlev
  */
@@ -35,8 +23,10 @@ public class LowMemoryWatcher {
   private static final WeakList<LowMemoryWatcher> ourListeners = new WeakList<>();
   private final Runnable myRunnable;
   private final LowMemoryWatcherType myType;
+  public static final AtomicBoolean ourNotificationsSuppressed = new AtomicBoolean();
 
   public static void onLowMemorySignalReceived(boolean afterGc) {
+    if (ourNotificationsSuppressed.get()) return;
     LOG.info("Low memory signal received: afterGc=" + afterGc);
     for (LowMemoryWatcher watcher : ourListeners.toStrongList()) {
       try {

platform/util/src/com/intellij/util/ref/GCWatcher.java

@@ -1,6 +1,7 @@
 // Copyright 2000-2019 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.util.ref;
 
+import com.intellij.openapi.util.LowMemoryWatcher;
 import com.intellij.openapi.util.Ref;
 import com.intellij.reference.SoftReference;
 import com.intellij.util.MemoryDumpHelper;
@@ -68,7 +69,15 @@ public class GCWatcher {
   }
 
   public boolean tryCollect() {
-    return GCUtil.allocateTonsOfMemory(new StringBuilder(), this::isEverythingCollected);
+    LowMemoryWatcher.ourNotificationsSuppressed.set(true);
+    try {
+      long startTime = System.currentTimeMillis();
+      GCUtil.allocateTonsOfMemory(new StringBuilder(), () -> isEverythingCollected() && System.currentTimeMillis() - startTime < 5000);
+      return isEverythingCollected();
+    }
+    finally {
+      LowMemoryWatcher.ourNotificationsSuppressed.set(false);
+    }
   }
 
   /**