1 files changed, 42 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/git/GarbageCollectionQueue.java b/gerrit-server/src/main/java/com/google/gerrit/server/git/GarbageCollectionQueue.java
new file mode 100644
index 0000000000..42dc505094
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/git/GarbageCollectionQueue.java
@@ -0,0 +1,42 @@
+// Copyright (C) 2013 The Android Open Source Project
+//
+// 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.
+
+package com.google.gerrit.server.git;
+
+import com.google.common.collect.Sets;
+import com.google.gerrit.reviewdb.client.Project;
+import com.google.inject.Singleton;
+
+import java.util.Collection;
+import java.util.Set;
+
+@Singleton
+public class GarbageCollectionQueue {
+  private final Set<Project.NameKey> projectsScheduledForGc = Sets.newHashSet();
+
+  public synchronized Set<Project.NameKey> addAll(Collection<Project.NameKey> projects) {
+    Set<Project.NameKey> added =
+        Sets.newLinkedHashSetWithExpectedSize(projects.size());
+    for (Project.NameKey p : projects) {
+      if (projectsScheduledForGc.add(p)) {
+        added.add(p);
+      }
+    }
+    return added;
+  }
+
+  public synchronized void gcFinished(Project.NameKey project) {
+    projectsScheduledForGc.remove(project);
+  }
+}