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// 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.lib.rules.cpp;
import com.google.common.collect.ImmutableList;
import com.google.devtools.build.lib.actions.ActionExecutionContext;
import com.google.devtools.build.lib.actions.Artifact;
import com.google.devtools.build.lib.actions.BaseSpawn;
import com.google.devtools.build.lib.actions.ExecException;
import com.google.devtools.build.lib.actions.ExecutionStrategy;
import com.google.devtools.build.lib.actions.ResourceSet;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
/**
* Run gcc locally by delegating to spawn.
*/
@ExecutionStrategy(name = { "local" },
contextType = CppCompileActionContext.class)
public class LocalGccStrategy implements CppCompileActionContext {
private static final Reply CANNED_REPLY = new Reply() {
@Override
public byte[] getContents() {
throw new IllegalStateException("Remotely computed data requested for local action");
}
};
@Override
public String strategyLocality() {
return "local";
}
public static void updateEnv(CppCompileAction action, Map<String, String> env) {
// We cannot locally execute an action that does not expect to output a .d file, since we would
// have no way to tell what files that it included were used during compilation.
// The exception to this is that if no .d file can be produced (as indicated by
// dotdfile == null), then the assumption is that there are truly no depencies,
// and therefore we don't care whether the step executes locally or remotely.
env.put("INTERCEPT_LOCALLY_EXECUTABLE",
(action.getDotdFile() != null && action.getDotdFile().artifact() == null) ? "0" : "1");
}
@Override
public boolean needsIncludeScanning() {
return false;
}
@Override
public Collection<Artifact> findAdditionalInputs(CppCompileAction action,
ActionExecutionContext actionExecutionContext) throws ExecException, InterruptedException {
return null;
}
@Override
public CppCompileActionContext.Reply execWithReply(
CppCompileAction action, ActionExecutionContext actionExecutionContext)
throws ExecException, InterruptedException {
Map<String, String> env = new HashMap<>();
env.putAll(action.getEnvironment());
updateEnv(action, env);
actionExecutionContext.getExecutor().getSpawnActionContext(action.getMnemonic())
.exec(new BaseSpawn.Local(action.getArgv(), env, action),
actionExecutionContext);
return null;
}
@Override
public ResourceSet estimateResourceConsumption(CppCompileAction action) {
return action.estimateResourceConsumptionLocal();
}
@Override
public Collection<Artifact> getScannedIncludeFiles(
CppCompileAction action, ActionExecutionContext actionExecutionContext) {
return ImmutableList.of();
}
@Override
public Reply getReplyFromException(ExecException e, CppCompileAction action) {
return CANNED_REPLY;
}
}
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