Examples with MutableActionGraph com.google.devtools.build.lib.actions.MutableActionGraph used on opensource projects

Example 1 with MutableActionGraph

use of com.google.devtools.build.lib.actions.MutableActionGraph in project bazel by bazelbuild.

the class SkyframeActionExecutor method constructActionGraphAndPathMap.

/**
   * Simultaneously construct an action graph for all the actions in Skyframe and a map from
   * {@link PathFragment}s to their respective {@link Artifact}s. We do this in a threadpool to save
   * around 1.5 seconds on a mid-sized build versus a single-threaded operation.
   */
private static Pair<ActionGraph, SortedMap<PathFragment, Artifact>> constructActionGraphAndPathMap(Iterable<ActionLookupValue> values, ConcurrentMap<ActionAnalysisMetadata, ConflictException> badActionMap) throws InterruptedException {
    MutableActionGraph actionGraph = new MapBasedActionGraph();
    ConcurrentNavigableMap<PathFragment, Artifact> artifactPathMap = new ConcurrentSkipListMap<>();
    // Action graph construction is CPU-bound.
    int numJobs = Runtime.getRuntime().availableProcessors();
    // No great reason for expecting 5000 action lookup values, but not worth counting size of
    // values.
    Sharder<ActionLookupValue> actionShards = new Sharder<>(numJobs, 5000);
    for (ActionLookupValue value : values) {
        actionShards.add(value);
    }
    ThrowableRecordingRunnableWrapper wrapper = new ThrowableRecordingRunnableWrapper("SkyframeActionExecutor#constructActionGraphAndPathMap");
    ExecutorService executor = Executors.newFixedThreadPool(numJobs, new ThreadFactoryBuilder().setNameFormat("ActionLookupValue Processor %d").build());
    for (List<ActionLookupValue> shard : actionShards) {
        executor.execute(wrapper.wrap(actionRegistration(shard, actionGraph, artifactPathMap, badActionMap)));
    }
    boolean interrupted = ExecutorUtil.interruptibleShutdown(executor);
    Throwables.propagateIfPossible(wrapper.getFirstThrownError());
    if (interrupted) {
        throw new InterruptedException();
    }
    return Pair.<ActionGraph, SortedMap<PathFragment, Artifact>>of(actionGraph, artifactPathMap);
}