1 files changed, 70 insertions, 0 deletions
diff --git a/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoStubAction.java b/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoStubAction.java
new file mode 100644
index 0000000000..f50a1ae5c2
--- /dev/null
+++ b/src/main/java/com/google/devtools/build/lib/rules/cpp/FdoStubAction.java
@@ -0,0 +1,70 @@
+// 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.rules.cpp;
+
+import com.google.common.collect.ImmutableList;
+import com.google.devtools.build.lib.actions.AbstractAction;
+import com.google.devtools.build.lib.actions.ActionExecutionContext;
+import com.google.devtools.build.lib.actions.ActionOwner;
+import com.google.devtools.build.lib.actions.Artifact;
+import com.google.devtools.build.lib.actions.Executor;
+import com.google.devtools.build.lib.actions.ResourceSet;
+import com.google.devtools.build.lib.vfs.Path;
+
+/**
+ * Stub action to be used as the generating action for FDO files that are extracted from the
+ * FDO zip.
+ *
+ * <p>This is needed because the extraction is currently not a bona fide action, therefore, Blaze
+ * would complain that these files have no generating action if we did not set it to an instance of
+ * this class.
+ */
+public class FdoStubAction extends AbstractAction {
+  public FdoStubAction(ActionOwner owner, Artifact output) {
+    // TODO(bazel-team): Make extracting the zip file a honest-to-God action so that we can do away
+    // with this ugliness.
+    super(owner, ImmutableList.<Artifact>of(), ImmutableList.of(output));
+  }
+
+  @Override
+  public String describeStrategy(Executor executor) {
+    return "";
+  }
+
+  @Override
+  public void execute(ActionExecutionContext actionExecutionContext) {
+  }
+
+  @Override
+  public String getMnemonic() {
+    return "FdoStubAction";
+  }
+
+  @Override
+  protected String computeKey() {
+    return "fdoStubAction";
+  }
+
+  @Override
+  public ResourceSet estimateResourceConsumption(Executor executor) {
+    return ResourceSet.ZERO;
+  }
+
+  @Override
+  public void prepare(Path execRoot) {
+    // The superclass would delete the output files here. We can't let that happen, since this
+    // action does not in fact create those files; it is only a placeholder and the actual files
+    // are created *before* the execution phase in FdoSupport.extractFdoZip()
+  }
+}