// Entry point
public static int Main(string[] args, ISimpleLineWriter output)
{
var start = DateTime.Now;
var slicingOptions = new SlicingOptions(args);
// we use it to parse the clousot options, and to split the work
var clousot = new NewCCI2Driver(slicingOptions.remainingArgs.ToArray(), output);
if (!clousot.CheckOptions())
{
return(-1);
}
var errorCode = 0;
WorkerPool workerPool = null;
IQueue queue = null;
IWorkerFactory localWorkerFactory = null;
List <IWorkerFactory> remoteWorkerFactories = null;
Func <SliceDefinition, ISliceWorkResult> workOnSlice = null;
Dictionary <ISliceId, int> failedRegressions = null;
var localWorkers = slicingOptions.LocalWorkers;
var remoteWorkers = slicingOptions.RemoteWorkers;
var workers = localWorkers + remoteWorkers;
// If we have workers, we create a Worker factory
if (workers > 0)
{
IDB db;
if (remoteWorkers > 0 || clousot.options.useCache)
{
// Use Clousot Database
db = new StdDB(clousot.options);
}
else
{
// In-memory database
db = new MemorySingletonDB();
}
workerPool = new WorkerPool("Worker", canCancel: false);
queue = new FIFOQueue(workerPool, db);
// When a job is done, it choses which jobs to put in the queue (e.g., analyze the dependencies)
var scheduler =
clousot.options.InferObjectInvariantsOnlyForReadonlyFields?
new LazySchedulerForObjectInvariants(queue, db) : // use LazySchedulerForObjectInvariants for global fixpoint computation including object invariants
new LazyScheduler(queue, db); // use LazyScheduler for the global fixpoint computation
//var scheduler = new NoloopScheduler(queue);
// Usual cache
var clousotDB = slicingOptions.useDB ? db : null;
var argsForWorker = clousot.argsForWorker.ToFList();
if (localWorkers > 0)
{
if (slicingOptions.cci1)
{
localWorkerFactory = new Clousot1WorkerFactory(scheduler, argsForWorker, output, clousotDB);
}
else
{
localWorkerFactory = new Clousot2WorkerFactory(scheduler, argsForWorker, output, clousotDB);
}
// TODO: use a lighter version of ClousotMain since options are already checked here
}
if (remoteWorkers > 0) // so far 1 factory per remote worker but we can do better
{
// TODO: specifiy, for each address the number of workers
// We have a list, because we can have several addresses
remoteWorkerFactories = slicingOptions.serviceAddress.Select(addr => new Clousot2SWorkerFactory(scheduler, argsForWorker, output, addr)).ToList <IWorkerFactory>();
}
if (clousot.options.IsRegression)
{
failedRegressions = new Dictionary <ISliceId, int>();
}
// fail if any work fails
scheduler.OnWorkDone += (sliceId, returnCode) =>
{
if (errorCode >= 0)
{
if (returnCode < 0) // special error code, keep only one
{
errorCode = returnCode;
}
else
{
int prevValue;
if (clousot.options.IsRegression)
{
lock (failedRegressions)
{
Contract.Assume(failedRegressions != null);
if (failedRegressions.TryGetValue(sliceId, out prevValue))
{
output.WriteLine("[Regression] We already analyzed {0} with outcome {1}. Now we update the outcome to {2}", sliceId.Dll, prevValue, returnCode);
}
failedRegressions[sliceId] = returnCode;
}
}
errorCode += returnCode; // regression error count, additive
}
}
};
// What we do for each slice. Two things:
// 1. Register the slice in the db
// 2. Add to the queue (via the scheduler, who decides how to do it)
workOnSlice = sliceDef =>
{
var sliceId = db.RegisterSlice(sliceDef);
scheduler.FeedQueue(new ISliceId[] { sliceId });
return(null);
};
}
ISlicerResult slicerResult = null;
if (slicingOptions.sliceFirst)
{
slicerResult = clousot.SplitWork(workOnSlice);
output.WriteLine("Slicing time: {0}", DateTime.Now - start);
}
if (workerPool != null)
{
if (localWorkerFactory != null)
{
for (var i = 0; i < localWorkers; i++)
{
workerPool.CreateWorker(localWorkerFactory);
}
}
if (remoteWorkerFactories != null)
{
foreach (var factory in remoteWorkerFactories)
{
workerPool.CreateWorker(factory);
}
}
}
if (!slicingOptions.sliceFirst)
{
slicerResult = clousot.SplitWork(workOnSlice);
output.WriteLine("Slicing time and thread creation time : {0}", DateTime.Now - start);
}
if (workerPool != null)
{
// workerPool != null ==> queue != null
Contract.Assume(queue != null);
workerPool.WaitAllAnd(queue.EmptyQueueWaitHandle);
// Something else can arrive at the queue, so we want to stop all of them
workerPool.StopAll();
}
if (slicerResult != null)
{
var errors = slicerResult.GetErrors();
if (errors.Any())
{
foreach (var errMessage in errors)
{
output.WriteLine(errMessage);
}
errorCode = errors.Count();
}
}
output.WriteLine("Total analysis time: {0}", DateTime.Now - start);
var returnValue = errorCode;
if (failedRegressions != null && clousot.options.IsRegression && errorCode >= 0)
{
returnValue = failedRegressions.Where(pair => pair.Value != 0).Select(pair => Math.Abs(pair.Value)).Sum();
}
#if DEBUG
if (clousot.options.IsRegression)
{
Console.WriteLine("[Regression] Returned value {0}", returnValue);
}
#endif
return(returnValue);
}
// Entry point
public static int Main(string[] args, ISimpleLineWriter output)
{
var start = DateTime.Now;
var slicingOptions = new SlicingOptions(args);
// we use it to parse the clousot options, and to split the work
var clousot = new NewCCI2Driver(slicingOptions.remainingArgs.ToArray(), output);
if (!clousot.CheckOptions())
{
return -1;
}
var errorCode = 0;
WorkerPool workerPool = null;
IQueue queue = null;
IWorkerFactory localWorkerFactory = null;
List<IWorkerFactory> remoteWorkerFactories = null;
Func<SliceDefinition, ISliceWorkResult> workOnSlice = null;
Dictionary<ISliceId, int> failedRegressions = null;
var localWorkers = slicingOptions.LocalWorkers;
var remoteWorkers = slicingOptions.RemoteWorkers;
var workers = localWorkers + remoteWorkers;
// If we have workers, we create a Worker factory
if (workers > 0)
{
IDB db;
if (remoteWorkers > 0 || clousot.options.useCache)
{
// Use Clousot Database
db = new StdDB(clousot.options);
}
else
{
// In-memory database
db = new MemorySingletonDB();
}
workerPool = new WorkerPool("Worker", canCancel: false);
queue = new FIFOQueue(workerPool, db);
// When a job is done, it choses which jobs to put in the queue (e.g., analyze the dependencies)
var scheduler =
clousot.options.InferObjectInvariantsOnlyForReadonlyFields?
new LazySchedulerForObjectInvariants(queue, db) : // use LazySchedulerForObjectInvariants for global fixpoint computation including object invariants
new LazyScheduler(queue, db); // use LazyScheduler for the global fixpoint computation
//var scheduler = new NoloopScheduler(queue);
// Usual cache
var clousotDB = slicingOptions.useDB ? db : null;
var argsForWorker = clousot.argsForWorker.ToFList();
if (localWorkers > 0)
{
if (slicingOptions.cci1)
localWorkerFactory = new Clousot1WorkerFactory(scheduler, argsForWorker, output, clousotDB);
else
localWorkerFactory = new Clousot2WorkerFactory(scheduler, argsForWorker, output, clousotDB);
// TODO: use a lighter version of ClousotMain since options are already checked here
}
if (remoteWorkers > 0) // so far 1 factory per remote worker but we can do better
{
// TODO: specifiy, for each address the number of workers
// We have a list, because we can have several addresses
remoteWorkerFactories = slicingOptions.serviceAddress.Select(addr => new Clousot2SWorkerFactory(scheduler, argsForWorker, output, addr)).ToList<IWorkerFactory>();
}
if (clousot.options.IsRegression)
{
failedRegressions = new Dictionary<ISliceId, int>();
}
// fail if any work fails
scheduler.OnWorkDone += (sliceId, returnCode) =>
{
if (errorCode >= 0)
{
if (returnCode < 0) // special error code, keep only one
{
errorCode = returnCode;
}
else
{
int prevValue;
if (clousot.options.IsRegression)
{
lock (failedRegressions)
{
Contract.Assume(failedRegressions != null);
if (failedRegressions.TryGetValue(sliceId, out prevValue))
{
output.WriteLine("[Regression] We already analyzed {0} with outcome {1}. Now we update the outcome to {2}", sliceId.Dll, prevValue, returnCode);
}
failedRegressions[sliceId] = returnCode;
}
}
errorCode += returnCode; // regression error count, additive
}
}
};
// What we do for each slice. Two things:
// 1. Register the slice in the db
// 2. Add to the queue (via the scheduler, who decides how to do it)
workOnSlice = sliceDef =>
{
var sliceId = db.RegisterSlice(sliceDef);
scheduler.FeedQueue(new ISliceId[] { sliceId });
return null;
};
}
ISlicerResult slicerResult = null;
if (slicingOptions.sliceFirst)
{
slicerResult = clousot.SplitWork(workOnSlice);
output.WriteLine("Slicing time: {0}", DateTime.Now - start);
}
if (workerPool != null)
{
if (localWorkerFactory != null)
for (var i = 0; i < localWorkers; i++)
workerPool.CreateWorker(localWorkerFactory);
if (remoteWorkerFactories != null)
foreach (var factory in remoteWorkerFactories)
workerPool.CreateWorker(factory);
}
if (!slicingOptions.sliceFirst)
{
slicerResult = clousot.SplitWork(workOnSlice);
output.WriteLine("Slicing time and thread creation time : {0}", DateTime.Now - start);
}
if (workerPool != null)
{
// workerPool != null ==> queue != null
Contract.Assume(queue != null);
workerPool.WaitAllAnd(queue.EmptyQueueWaitHandle);
// Something else can arrive at the queue, so we want to stop all of them
workerPool.StopAll();
}
if (slicerResult != null)
{
var errors = slicerResult.GetErrors();
if (errors.Any())
{
foreach (var errMessage in errors)
output.WriteLine(errMessage);
errorCode = errors.Count();
}
}
output.WriteLine("Total analysis time: {0}", DateTime.Now - start);
var returnValue = errorCode;
if (failedRegressions != null && clousot.options.IsRegression && errorCode >= 0)
{
returnValue = failedRegressions.Where(pair => pair.Value != 0).Select(pair => Math.Abs(pair.Value)).Sum();
}
#if DEBUG
if (clousot.options.IsRegression)
{
Console.WriteLine("[Regression] Returned value {0}", returnValue);
}
#endif
return returnValue;
}
