Parallelize Package retrieval during Sky-query operation. To maintain type-safety, we now must pass in the exception type of the callback.
--
MOS_MIGRATED_REVID=113313312
diff --git a/src/main/java/com/google/devtools/build/skyframe/WalkableGraph.java b/src/main/java/com/google/devtools/build/skyframe/WalkableGraph.java
index 75c347f..fd43a07 100644
--- a/src/main/java/com/google/devtools/build/skyframe/WalkableGraph.java
+++ b/src/main/java/com/google/devtools/build/skyframe/WalkableGraph.java
@@ -13,6 +13,7 @@
// limitations under the License.
package com.google.devtools.build.skyframe;
+import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
import com.google.devtools.build.lib.events.EventHandler;
import java.util.Collection;
@@ -24,6 +25,7 @@
* Read-only graph that exposes the dependents, dependencies (reverse dependents), and value and
* exception (if any) of a given node.
*/
+@ThreadSafe
public interface WalkableGraph {
/**
