Update from Google.

--
MOE_MIGRATED_REVID=85702957

1 files changed, 27 insertions, 0 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/BrokenDiffAwarenessException.java b/src/main/java/com/google/devtools/build/lib/skyframe/BrokenDiffAwarenessException.java
new file mode 100644
index 0000000000..a5b02725ce
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/BrokenDiffAwarenessException.java
@@ -0,0 +1,27 @@
+// Copyright 2014 Google Inc. All rights reserved.
+//
+// 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.devtools.build.lib.skyframe;
+
+import com.google.common.base.Preconditions;
+
+/**
+ * Thrown on {@link DiffAwareness#getDiff} to indicate that something is wrong with the
+ * {@link DiffAwareness} instance and it should not be used again.
+ */
+public class BrokenDiffAwarenessException extends Exception {
+
+  public BrokenDiffAwarenessException(String msg) {
+    super(Preconditions.checkNotNull(msg));
+  }
+}