Set BuildDriverKey as CPU-heavy.

This is the result of an investigation into why Skymeld's performance
deteriorated so much as we added more features to it. BuildDriverKey is in fact very CPU-heavy (e.g. action conflict checking) and thus should be marked as such.

PiperOrigin-RevId: 448937072

src/main/java/com/google/devtools/build/lib/concurrent/MultiExecutorQueueVisitor.java

diff --git a/src/main/java/com/google/devtools/build/lib/concurrent/MultiExecutorQueueVisitor.java b/src/main/java/com/google/devtools/build/lib/concurrent/MultiExecutorQueueVisitor.java
index 4b1bb15..7219dd7 100644
--- a/src/main/java/com/google/devtools/build/lib/concurrent/MultiExecutorQueueVisitor.java
+++ b/src/main/java/com/google/devtools/build/lib/concurrent/MultiExecutorQueueVisitor.java
@@ -81,7 +81,7 @@
   }
 
   @Override
-  public final void execute(Runnable runnable, ThreadPoolType threadPoolType) {
+  public void execute(Runnable runnable, ThreadPoolType threadPoolType) {
     super.executeWithExecutorService(runnable, getExecutorServiceByThreadPoolType(threadPoolType));
   }
 

src/main/java/com/google/devtools/build/lib/skyframe/BUILD

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/BUILD b/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
index 5f865a7..dbdb4b8 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/BUILD
@@ -890,6 +890,7 @@
         ":sky_functions",
         "//src/main/java/com/google/devtools/build/lib/actions:action_lookup_key",
         "//src/main/java/com/google/devtools/build/lib/analysis:top_level_artifact_context",
+        "//src/main/java/com/google/devtools/build/skyframe:cpu_heavy_skykey",
         "//src/main/java/com/google/devtools/build/skyframe:skyframe-objects",
     ],
 )

src/main/java/com/google/devtools/build/lib/skyframe/BuildDriverKey.java

diff --git a/src/main/java/com/google/devtools/build/lib/skyframe/BuildDriverKey.java b/src/main/java/com/google/devtools/build/lib/skyframe/BuildDriverKey.java
index f2744c4..32574dd 100644
--- a/src/main/java/com/google/devtools/build/lib/skyframe/BuildDriverKey.java
+++ b/src/main/java/com/google/devtools/build/lib/skyframe/BuildDriverKey.java
@@ -15,15 +15,15 @@
 
 import com.google.devtools.build.lib.actions.ActionLookupKey;
 import com.google.devtools.build.lib.analysis.TopLevelArtifactContext;
+import com.google.devtools.build.skyframe.CPUHeavySkyKey;
 import com.google.devtools.build.skyframe.SkyFunctionName;
-import com.google.devtools.build.skyframe.SkyKey;
 import java.util.Objects;
 
 /**
  * Wraps an {@link ActionLookupKey}. The evaluation of this SkyKey is the entry point of analyzing
  * the {@link ActionLookupKey} and executing the associated actions.
  */
-public final class BuildDriverKey implements SkyKey {
+public final class BuildDriverKey implements CPUHeavySkyKey {
   private final ActionLookupKey actionLookupKey;
   private final TopLevelArtifactContext topLevelArtifactContext;
   private final TestType testType;