private void InstrumentProcedure(InstrumentationRegion region)
{
foreach (var ls in this.AC.CurrentLocksets)
{
if (this.ShouldSkipLockset(ls))
{
continue;
}
region.Procedure().Modifies.Add(new IdentifierExpr(ls.Id.tok, ls.Id));
}
List <Variable> vars = SharedStateAnalyser.GetMemoryRegions(DeviceDriver.GetEntryPoint(this.EP.Name));
foreach (var ls in this.AC.MemoryLocksets)
{
if (!vars.Any(val => val.Name.Equals(ls.TargetName)))
{
continue;
}
if (this.ShouldSkipLockset(ls))
{
continue;
}
region.Procedure().Modifies.Add(new IdentifierExpr(ls.Id.tok, ls.Id));
}
}
public static void CleanReadWriteModsets(AnalysisContext ac, EntryPoint ep, InstrumentationRegion region)
{
var vars = SharedStateAnalyser.GetMemoryRegions(ep);
foreach (var acv in ac.GetWriteAccessCheckingVariables())
{
string targetName = acv.Name.Split('_')[1];
if (!vars.Any(val => val.Name.Equals(targetName)))
{
continue;
}
if (ep.HasWriteAccess.ContainsKey(targetName))
{
continue;
}
region.Procedure().Modifies.RemoveAll(val => val.Name.Equals(acv.Name));
}
foreach (var acv in ac.GetReadAccessCheckingVariables())
{
string targetName = acv.Name.Split('_')[1];
if (!vars.Any(val => val.Name.Equals(targetName)))
{
continue;
}
if (ep.HasReadAccess.ContainsKey(targetName))
{
continue;
}
region.Procedure().Modifies.RemoveAll(val => val.Name.Equals(acv.Name));
}
}
public GlobalRaceCheckingInstrumentation(AnalysisContext ac, EntryPoint ep)
{
Contract.Requires(ac != null && ep != null);
this.AC = ac;
this.EP = ep;
this.MemoryRegions = SharedStateAnalyser.GetMemoryRegions(ep);
}
private void CreateImplementation(Implementation impl1, Implementation impl2)
{
Block call = new Block(Token.NoToken, "$logger",
new List <Cmd>(), new GotoCmd(Token.NoToken,
new List <string> {
"$checker"
}));
if (this.EP1.Name.Equals(this.EP2.Name))
{
this.CC1 = this.CreateCallCmd(impl1, impl2);
call.Cmds.Add(this.CC1);
}
else
{
this.CC1 = this.CreateCallCmd(impl1, impl2);
call.Cmds.Add(this.CC1);
this.CC2 = this.CreateCallCmd(impl2, impl1, true);
call.Cmds.Add(this.CC2);
}
this.RegionBlocks.Add(call);
this.InternalImplementation = new Implementation(Token.NoToken, this.RegionName,
new List <TypeVariable>(), this.CreateNewInParams(impl1, impl2),
new List <Variable>(), new List <Variable>(), this.RegionBlocks);
Block check = new Block(Token.NoToken, "$checker",
new List <Cmd>(), new ReturnCmd(Token.NoToken));
foreach (var mr in SharedStateAnalyser.GetPairMemoryRegions(
DeviceDriver.GetEntryPoint(impl1.Name), DeviceDriver.GetEntryPoint(impl2.Name)))
{
AssertCmd assert = this.CreateRaceCheckingAssertion(impl1, impl2, mr);
if (assert == null)
{
continue;
}
check.Cmds.Add(this.CreateCaptureStateAssume(mr));
check.Cmds.Add(assert);
}
this.RegionBlocks.Add(check);
this.InternalImplementation.Attributes = new QKeyValue(Token.NoToken,
"checker", new List <object>(), null);
}
private void InstrumentProcedure(InstrumentationRegion region)
{
var vars = SharedStateAnalyser.GetMemoryRegions(this.EP);
foreach (var acv in this.AC.GetWriteAccessCheckingVariables())
{
string targetName = acv.Name.Split('_')[1];
if (!vars.Any(val => val.Name.Equals(targetName)))
{
continue;
}
if (!this.EP.HasWriteAccess.ContainsKey(targetName))
{
continue;
}
if (!region.Procedure().Modifies.Any(mod => mod.Name.Equals(acv.Name)))
{
region.Procedure().Modifies.Add(new IdentifierExpr(acv.tok, acv));
}
}
foreach (var acv in this.AC.GetReadAccessCheckingVariables())
{
string targetName = acv.Name.Split('_')[1];
if (!vars.Any(val => val.Name.Equals(targetName)))
{
continue;
}
if (!this.EP.HasReadAccess.ContainsKey(targetName))
{
continue;
}
if (!region.Procedure().Modifies.Any(mod => mod.Name.Equals(acv.Name)))
{
region.Procedure().Modifies.Add(new IdentifierExpr(acv.tok, acv));
}
}
}
private void AddAccessFuncs(AccessType access)
{
foreach (var mr in SharedStateAnalyser.GetMemoryRegions(this.EP))
{
List <Variable> inParams = new List <Variable>();
if (mr.TypedIdent.Type.IsMap)
{
inParams.Add(new LocalVariable(Token.NoToken, new TypedIdent(Token.NoToken, "ptr",
this.AC.MemoryModelType)));
}
Procedure proc = new Procedure(Token.NoToken, this.MakeAccessFuncName(access, mr.Name),
new List <TypeVariable>(), inParams, new List <Variable>(),
new List <Requires>(), new List <IdentifierExpr>(), new List <Ensures>());
proc.AddAttribute("inline", new object[] { new LiteralExpr(Token.NoToken, BigNum.FromInt(1)) });
this.AC.TopLevelDeclarations.Add(proc);
this.AC.ResContext.AddProcedure(proc);
var cmds = new List <Cmd>();
foreach (var ls in this.AC.MemoryLocksets)
{
if (!ls.TargetName.Equals(mr.Name))
{
continue;
}
if (this.ShouldSkipLockset(ls))
{
continue;
}
foreach (var cls in this.AC.CurrentLocksets)
{
if (!cls.Lock.Name.Equals(ls.Lock.Name))
{
continue;
}
IdentifierExpr lsExpr = new IdentifierExpr(ls.Id.tok, ls.Id);
cmds.Add(new AssignCmd(Token.NoToken,
new List <AssignLhs>()
{
new SimpleAssignLhs(Token.NoToken, lsExpr)
}, new List <Expr> {
Expr.And(new IdentifierExpr(cls.Id.tok, cls.Id), lsExpr)
}));
proc.Modifies.Add(lsExpr);
break;
}
}
if (access == AccessType.WRITE)
{
foreach (var acv in this.AC.GetWriteAccessCheckingVariables())
{
if (!acv.Name.Split('_')[1].Equals(mr.Name))
{
continue;
}
var wacs = this.AC.GetWriteAccessCheckingVariables().Find(val =>
val.Name.Contains(this.AC.GetWriteAccessVariableName(this.EP, mr.Name)));
var wacsExpr = new IdentifierExpr(wacs.tok, wacs);
cmds.Add(new AssignCmd(Token.NoToken,
new List <AssignLhs>()
{
new SimpleAssignLhs(Token.NoToken, wacsExpr)
}, new List <Expr> {
Expr.True
}));
proc.Modifies.Add(wacsExpr);
}
}
else if (access == AccessType.READ)
{
foreach (var acv in this.AC.GetReadAccessCheckingVariables())
{
if (!acv.Name.Split('_')[1].Equals(mr.Name))
{
continue;
}
var racs = this.AC.GetReadAccessCheckingVariables().Find(val =>
val.Name.Contains(this.AC.GetReadAccessVariableName(this.EP, mr.Name)));
var racsExpr = new IdentifierExpr(racs.tok, racs);
cmds.Add(new AssignCmd(Token.NoToken,
new List <AssignLhs>()
{
new SimpleAssignLhs(Token.NoToken, racsExpr)
}, new List <Expr> {
Expr.True
}));
proc.Modifies.Add(racsExpr);
}
}
List <BigBlock> blocks = null;
if (mr.TypedIdent.Type.IsMap)
{
var ptr = new LocalVariable(Token.NoToken, new TypedIdent(Token.NoToken, "ptr",
this.AC.MemoryModelType));
var watchdog = this.AC.GetAccessWatchdogConstants().Find(val =>
val.Name.Contains(this.AC.GetAccessWatchdogConstantName(mr.Name)));
var ptrExpr = new IdentifierExpr(ptr.tok, ptr);
var watchdogExpr = new IdentifierExpr(watchdog.tok, watchdog);
var guardExpr = Expr.Eq(watchdogExpr, ptrExpr);
var ifStmts = new StmtList(new List <BigBlock> {
new BigBlock(Token.NoToken, null, cmds, null, null)
}, Token.NoToken);
var ifCmd = new IfCmd(Token.NoToken, guardExpr, ifStmts, null, null);
blocks = new List <BigBlock> {
new BigBlock(Token.NoToken, "_" + access.ToString(), new List <Cmd>(), ifCmd, null)
};
}
else
{
blocks = new List <BigBlock> {
new BigBlock(Token.NoToken, "_" + access.ToString(), cmds, null, null)
};
}
Implementation impl = new Implementation(Token.NoToken, this.MakeAccessFuncName(access, mr.Name),
new List <TypeVariable>(), inParams, new List <Variable>(), new List <Variable>(),
new StmtList(blocks, Token.NoToken));
impl.Proc = proc;
impl.AddAttribute("inline", new object[] { new LiteralExpr(Token.NoToken, BigNum.FromInt(1)) });
this.AC.TopLevelDeclarations.Add(impl);
}
}
private void InstrumentImplementation(InstrumentationRegion region)
{
foreach (var block in region.Blocks())
{
for (int idx = 0; idx < block.Cmds.Count; idx++)
{
if (!(block.Cmds[idx] is AssignCmd))
{
continue;
}
var assign = block.Cmds[idx] as AssignCmd;
var lhssMap = assign.Lhss.OfType <MapAssignLhs>();
var lhss = assign.Lhss.OfType <SimpleAssignLhs>();
var rhssMap = assign.Rhss.OfType <NAryExpr>();
var rhss = assign.Rhss.OfType <IdentifierExpr>();
CallCmd call = null;
if (lhssMap.Count() == 1)
{
var lhs = lhssMap.First();
if (lhs.DeepAssignedIdentifier.Name.StartsWith("$M.") &&
lhs.Map is SimpleAssignLhs && lhs.Indexes.Count == 1)
{
if (SharedStateAnalyser.GetMemoryRegions(this.EP).Any(val =>
val.Name.Equals(lhs.DeepAssignedIdentifier.Name)))
{
var ind = lhs.Indexes[0];
call = new CallCmd(Token.NoToken,
this.MakeAccessFuncName(AccessType.WRITE, lhs.DeepAssignedIdentifier.Name),
new List <Expr> {
ind
}, new List <IdentifierExpr>());
if (rhssMap.Count() == 0 && assign.Rhss.Count == 1 &&
assign.Rhss[0].ToString().StartsWith("$p"))
{
call.Attributes = new QKeyValue(Token.NoToken, "rhs",
new List <object>()
{
assign.Rhss[0]
}, call.Attributes);
}
if (!region.HasWriteAccess.ContainsKey(lhs.DeepAssignedIdentifier.Name))
{
region.HasWriteAccess.Add(lhs.DeepAssignedIdentifier.Name, 0);
}
region.HasWriteAccess[lhs.DeepAssignedIdentifier.Name] =
region.HasWriteAccess[lhs.DeepAssignedIdentifier.Name] + 1;
}
else
{
call = new CallCmd(Token.NoToken, "_NO_OP_$" + this.EP.Name,
new List <Expr>(), new List <IdentifierExpr>());
}
}
}
else if (lhss.Count() == 1)
{
var lhs = lhss.First();
if (lhs.DeepAssignedIdentifier.Name.StartsWith("$M."))
{
if (SharedStateAnalyser.GetMemoryRegions(this.EP).Any(val =>
val.Name.Equals(lhs.DeepAssignedIdentifier.Name)))
{
call = new CallCmd(Token.NoToken,
this.MakeAccessFuncName(AccessType.WRITE, lhs.DeepAssignedIdentifier.Name),
new List <Expr>(), new List <IdentifierExpr>());
if (rhssMap.Count() == 0 && assign.Rhss.Count == 1 &&
assign.Rhss[0].ToString().StartsWith("$p"))
{
call.Attributes = new QKeyValue(Token.NoToken, "rhs",
new List <object>()
{
assign.Rhss[0]
}, call.Attributes);
}
if (!region.HasWriteAccess.ContainsKey(lhs.DeepAssignedIdentifier.Name))
{
region.HasWriteAccess.Add(lhs.DeepAssignedIdentifier.Name, 0);
}
region.HasWriteAccess[lhs.DeepAssignedIdentifier.Name] =
region.HasWriteAccess[lhs.DeepAssignedIdentifier.Name] + 1;
}
else
{
call = new CallCmd(Token.NoToken, "_NO_OP_$" + this.EP.Name,
new List <Expr>(), new List <IdentifierExpr>());
}
}
}
if (rhssMap.Count() == 1)
{
var rhs = rhssMap.First();
if (rhs.Fun is MapSelect && rhs.Args.Count == 2 &&
(rhs.Args[0] as IdentifierExpr).Name.StartsWith("$M."))
{
if (SharedStateAnalyser.GetMemoryRegions(this.EP).Any(val =>
val.Name.Equals((rhs.Args[0] as IdentifierExpr).Name)))
{
call = new CallCmd(Token.NoToken,
this.MakeAccessFuncName(AccessType.READ, (rhs.Args[0] as IdentifierExpr).Name),
new List <Expr> {
rhs.Args[1]
}, new List <IdentifierExpr>());
if (!region.HasReadAccess.ContainsKey((rhs.Args[0] as IdentifierExpr).Name))
{
region.HasReadAccess.Add((rhs.Args[0] as IdentifierExpr).Name, 0);
}
region.HasReadAccess[(rhs.Args[0] as IdentifierExpr).Name] =
region.HasReadAccess[(rhs.Args[0] as IdentifierExpr).Name] + 1;
}
else
{
call = new CallCmd(Token.NoToken, "_NO_OP_$" + this.EP.Name,
new List <Expr>(), new List <IdentifierExpr>());
}
}
}
else if (rhss.Count() == 1)
{
var rhs = rhss.First();
if (rhs.Name.StartsWith("$M."))
{
if (SharedStateAnalyser.GetMemoryRegions(this.EP).Any(val =>
val.Name.Equals(rhs.Name)))
{
call = new CallCmd(Token.NoToken,
this.MakeAccessFuncName(AccessType.READ, rhs.Name),
new List <Expr>(), new List <IdentifierExpr>());
if (!region.HasReadAccess.ContainsKey(rhs.Name))
{
region.HasReadAccess.Add(rhs.Name, 0);
}
region.HasReadAccess[rhs.Name] = region.HasReadAccess[rhs.Name] + 1;
}
else
{
call = new CallCmd(Token.NoToken, "_NO_OP_$" + this.EP.Name,
new List <Expr>(), new List <IdentifierExpr>());
}
}
}
if (call != null)
{
block.Cmds.Insert(idx + 1, call);
}
}
}
foreach (var write in region.HasWriteAccess)
{
if (!this.EP.HasWriteAccess.ContainsKey(write.Key))
{
this.EP.HasWriteAccess.Add(write.Key, 0);
}
this.EP.HasWriteAccess[write.Key] = this.EP.HasWriteAccess[write.Key] + write.Value;
}
foreach (var read in region.HasReadAccess)
{
if (!this.EP.HasReadAccess.ContainsKey(read.Key))
{
this.EP.HasReadAccess.Add(read.Key, 0);
}
this.EP.HasReadAccess[read.Key] = this.EP.HasReadAccess[read.Key] + read.Value;
}
}
public void Run()
{
if (WhoopEngineCommandLineOptions.Get().MeasurePassExecutionTime)
{
Console.WriteLine(" |------ [{0}]", this.EP.Name);
Console.WriteLine(" | |");
this.Timer = new ExecutionTimer();
this.Timer.Start();
}
SharedStateAnalyser.AnalyseMemoryRegionsWithPairInformation(this.AC, this.EP);
Instrumentation.Factory.CreateInstrumentationRegionsConstructor(this.AC, this.EP).Run();
Instrumentation.Factory.CreateGlobalRaceCheckingInstrumentation(this.AC, this.EP).Run();
Instrumentation.Factory.CreateLocksetInstrumentation(this.AC, this.EP).Run();
Instrumentation.Factory.CreateDomainKnowledgeInstrumentation(this.AC, this.EP).Run();
Instrumentation.Factory.CreateRaceInstrumentation(this.AC, this.EP).Run();
Analysis.Factory.CreateSharedStateAbstraction(this.AC).Run();
if (this.EP.IsEnablingDevice)
{
Refactoring.Factory.CreateDeviceEnableProgramSlicing(this.AC, this.EP).Run();
}
else if (this.EP.IsDisablingDevice)
{
Refactoring.Factory.CreateDeviceDisableProgramSlicing(this.AC, this.EP).Run();
}
if (this.EP.IsClone && this.EP.IsGoingToDisableNetwork)
{
Refactoring.Factory.CreateNetDisableProgramSlicing(this.AC, this.EP).Run();
}
else if (this.EP.IsClone && this.EP.IsCalledWithNetworkDisabled)
{
Refactoring.Factory.CreateNetEnableProgramSlicing(this.AC, this.EP).Run();
}
Instrumentation.Factory.CreateErrorReportingInstrumentation(this.AC, this.EP).Run();
if (WhoopEngineCommandLineOptions.Get().SkipInference)
{
ModelCleaner.RemoveGenericTopLevelDeclerations(this.AC, this.EP);
ModelCleaner.RemoveUnusedTopLevelDeclerations(this.AC);
ModelCleaner.RemoveGlobalLocksets(this.AC);
ModelCleaner.RemoveInlineFromHelperFunctions(this.AC, this.EP);
}
else if (WhoopEngineCommandLineOptions.Get().InliningBound > 0 &&
this.AC.GetNumOfEntryPointRelatedFunctions(this.EP.Name) <=
WhoopEngineCommandLineOptions.Get().InliningBound)
{
this.AC.InlineEntryPoint(this.EP);
}
else
{
ModelCleaner.RemoveInlineFromHelperFunctions(this.AC, this.EP);
}
ModelCleaner.RemoveUnecesseryInfoFromSpecialFunctions(this.AC);
ModelCleaner.RemoveCorralFunctions(this.AC);
if (WhoopEngineCommandLineOptions.Get().MeasurePassExecutionTime)
{
this.Timer.Stop();
Console.WriteLine(" | |");
Console.WriteLine(" | |--- [Total] {0}", this.Timer.Result());
Console.WriteLine(" |");
}
if (WhoopEngineCommandLineOptions.Get().SkipInference)
{
Whoop.IO.BoogieProgramEmitter.Emit(this.AC.TopLevelDeclarations, WhoopEngineCommandLineOptions.Get().Files[
WhoopEngineCommandLineOptions.Get().Files.Count - 1], this.EP.Name + "$instrumented", "wbpl");
}
}
public bool IsImplementationRacing(Implementation impl)
{
Contract.Requires(impl != null);
return(SharedStateAnalyser.IsImplementationRacing(impl));
}
private void CreateProcedure(Implementation impl1, Implementation impl2)
{
this.InternalImplementation.Proc = new Procedure(Token.NoToken, this.RegionName,
new List <TypeVariable>(), this.CreateNewInParams(impl1, impl2),
new List <Variable>(), new List <Requires>(),
new List <IdentifierExpr>(), new List <Ensures>());
this.InternalImplementation.Proc.Attributes = new QKeyValue(Token.NoToken,
"checker", new List <object>(), null);
List <Variable> varsEp1 = SharedStateAnalyser.GetMemoryRegions(DeviceDriver.GetEntryPoint(impl1.Name));
List <Variable> varsEp2 = SharedStateAnalyser.GetMemoryRegions(DeviceDriver.GetEntryPoint(impl2.Name));
foreach (var ls in this.AC.CurrentLocksets)
{
var require = new Requires(false, Expr.Not(new IdentifierExpr(ls.Id.tok,
new Duplicator().Visit(ls.Id.Clone()) as Variable)));
this.InternalImplementation.Proc.Requires.Add(require);
}
foreach (var ls in this.AC.MemoryLocksets)
{
Requires require = null;
if (!this.IsLockUsed(ls))
{
require = new Requires(false, Expr.Not(new IdentifierExpr(ls.Id.tok,
new Duplicator().Visit(ls.Id.Clone()) as Variable)));
}
else
{
require = new Requires(false, new IdentifierExpr(ls.Id.tok,
new Duplicator().Visit(ls.Id.Clone()) as Variable));
}
this.InternalImplementation.Proc.Requires.Add(require);
}
foreach (var acv in this.AC.GetWriteAccessCheckingVariables())
{
var require = new Requires(false, Expr.Not(new IdentifierExpr(acv.tok,
new Duplicator().Visit(acv.Clone()) as Variable)));
this.InternalImplementation.Proc.Requires.Add(require);
}
foreach (var acv in this.AC.GetReadAccessCheckingVariables())
{
var require = new Requires(false, Expr.Not(new IdentifierExpr(acv.tok,
new Duplicator().Visit(acv.Clone()) as Variable)));
this.InternalImplementation.Proc.Requires.Add(require);
}
foreach (var ie in this.AC.Checker.Proc.Modifies)
{
if (!ie.Name.Equals("$Alloc") && !ie.Name.Equals("$CurrAddr") &&
!varsEp1.Any(val => val.Name.Equals(ie.Name)) &&
!varsEp2.Any(val => val.Name.Equals(ie.Name)))
{
continue;
}
this.InternalImplementation.Proc.Modifies.Add(new Duplicator().Visit(ie.Clone()) as IdentifierExpr);
}
foreach (var ls in this.AC.CurrentLocksets)
{
if (!this.IsLockUsed(ls))
{
continue;
}
this.InternalImplementation.Proc.Modifies.Add(new IdentifierExpr(
ls.Id.tok, new Duplicator().Visit(ls.Id.Clone()) as Variable));
}
foreach (var ls in this.AC.MemoryLocksets)
{
if (!this.IsLockUsed(ls))
{
continue;
}
this.InternalImplementation.Proc.Modifies.Add(new IdentifierExpr(
ls.Id.tok, new Duplicator().Visit(ls.Id.Clone()) as Variable));
}
foreach (var acs in this.AC.GetWriteAccessCheckingVariables())
{
var split = acs.Name.Split(new string[] { "_" }, StringSplitOptions.None);
if (acs.Name.Contains(this.EP1.Name) && !this.EP1.HasWriteAccess.ContainsKey(split[1]))
{
continue;
}
if (acs.Name.Contains(this.EP2.Name) && !this.EP2.HasWriteAccess.ContainsKey(split[1]))
{
continue;
}
this.InternalImplementation.Proc.Modifies.Add(new IdentifierExpr(
acs.tok, new Duplicator().Visit(acs.Clone()) as Variable));
}
foreach (var acs in this.AC.GetReadAccessCheckingVariables())
{
var split = acs.Name.Split(new string[] { "_" }, StringSplitOptions.None);
if (acs.Name.Contains(this.EP1.Name) && !this.EP1.HasReadAccess.ContainsKey(split[1]))
{
continue;
}
if (acs.Name.Contains(this.EP2.Name) && !this.EP2.HasReadAccess.ContainsKey(split[1]))
{
continue;
}
this.InternalImplementation.Proc.Modifies.Add(new IdentifierExpr(
acs.tok, new Duplicator().Visit(acs.Clone()) as Variable));
}
}
