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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.devtools.build.lib.analysis.BlazeDirectories;
import com.google.devtools.build.lib.rules.cpp.FdoSupport.FdoException;
import com.google.devtools.build.lib.skyframe.PrecomputedValue;
import com.google.devtools.build.lib.skyframe.WorkspaceNameValue;
import com.google.devtools.build.lib.vfs.Path;
import com.google.devtools.build.skyframe.SkyFunction;
import com.google.devtools.build.skyframe.SkyFunctionException;
import com.google.devtools.build.skyframe.SkyFunctionException.Transience;
import com.google.devtools.build.skyframe.SkyKey;
import com.google.devtools.build.skyframe.SkyValue;
import java.io.IOException;
import javax.annotation.Nullable;
/**
* Wrapper for {@link FdoSupport} that turns it into a {@link SkyFunction}.
*/
public class FdoSupportFunction implements SkyFunction {
/**
* Wrapper for FDO exceptions.
*/
public static class FdoSkyException extends SkyFunctionException {
public FdoSkyException(Exception cause, Transience transience) {
super(cause, transience);
}
}
@Nullable
@Override
public SkyValue compute(SkyKey skyKey, Environment env)
throws FdoSkyException, InterruptedException {
BlazeDirectories blazeDirectories = PrecomputedValue.BLAZE_DIRECTORIES.get(env);
WorkspaceNameValue workspaceNameValue = (WorkspaceNameValue) env.getValue(
WorkspaceNameValue.key());
if (env.valuesMissing()) {
return null;
}
Path execRoot = blazeDirectories.getExecRoot(workspaceNameValue.getName());
FdoSupportValue.Key key = (FdoSupportValue.Key) skyKey.argument();
FdoSupport fdoSupport;
try {
fdoSupport =
FdoSupport.create(
env,
key.getFdoInstrument(),
key.getFdoZip(),
key.getLipoMode(),
key.getLLVMFdo(),
execRoot);
if (env.valuesMissing()) {
return null;
}
} catch (FdoException e) {
throw new FdoSkyException(e, Transience.PERSISTENT);
} catch (IOException e) {
throw new FdoSkyException(e, Transience.TRANSIENT);
}
return new FdoSupportValue(fdoSupport);
}
@Nullable
@Override
public String extractTag(SkyKey skyKey) {
return null;
}
}
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