// Copyright 2014 The Bazel Authors. 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.skyframe;
/**
* NodeEntry that does not store edges (directDeps and reverseDeps) when the node is done. Used to
* save memory when it is known that the graph will not be reused.
*
* <p>Graph edges must be stored for incremental builds, but if this program will terminate after a
* single run, edges can be thrown away in order to save memory. The edges will be stored in the
* {@link BuildingState} as usual while the node is being built, but will not be stored once the
* node is done and written to the graph. Any attempt to access the edges once the node is done will
* fail the build fast.
*/
class EdgelessInMemoryNodeEntry extends InMemoryNodeEntry {
@Override
public boolean keepEdges() {
return false;
}
}