Ejemplo n.º 1
0
    void DebugManager::UpdateConsoleScope(DynamicObject* copyFromScope, ScriptContext* scriptContext)
    {
        Assert(copyFromScope != nullptr);
        DynamicObject* consoleScope = this->GetConsoleScope(scriptContext);
        Js::RecyclableObject* recyclableObject = Js::RecyclableObject::FromVar(copyFromScope);

        ulong newPropCount = recyclableObject->GetPropertyCount();
        for (ulong i = 0; i < newPropCount; i++)
        {
            Js::PropertyId propertyId = recyclableObject->GetPropertyId((Js::PropertyIndex)i);
            // For deleted properties we won't have a property id
            if (propertyId != Js::Constants::NoProperty)
            {
                Js::PropertyValueInfo propertyValueInfo;
                Var propertyValue;
                BOOL gotPropertyValue = recyclableObject->GetProperty(recyclableObject, propertyId, &propertyValue, &propertyValueInfo, scriptContext);
                AssertMsg(gotPropertyValue, "DebugManager::UpdateConsoleScope Should have got valid value?");

                OUTPUT_TRACE(Js::ConsoleScopePhase, _u("Adding property '%s'\n"), scriptContext->GetPropertyName(propertyId)->GetBuffer());

                BOOL updateSuccess = consoleScope->SetPropertyWithAttributes(propertyId, propertyValue, propertyValueInfo.GetAttributes(), &propertyValueInfo);
                AssertMsg(updateSuccess, "DebugManager::UpdateConsoleScope Unable to update property value. Am I missing a scenario?");
            }
        }

        OUTPUT_TRACE(Js::ConsoleScopePhase, _u("Number of properties on console scope object after update are %d\n"), consoleScope->GetPropertyCount());
    }
Ejemplo n.º 2
0
    void SnapshotExtractor::DoMarkWalk(const JsUtil::List<Js::Var, HeapAllocator>& roots, const JsUtil::List<Js::ScriptContext*, HeapAllocator>& ctxs, ThreadContext* threadContext)
    {
        TTDTimer timer;
        double startTime = timer.Now();

        for(int32 i = 0; i < roots.Count(); ++i)
        {
            Js::Var root = roots.Item(i);
            this->MarkVisitVar(root);
        }

        while(!this->m_worklist.Empty())
        {
            Js::RecyclableObject* nobj = this->m_worklist.Dequeue();
            AssertMsg(JsSupport::IsVarComplexKind(nobj), "Should only be these two options");

            this->MarkVisitStandardProperties(nobj);
            nobj->MarkVisitKindSpecificPtrs(this);
        }

        //Mark all of the well known objects/types
        for(int32 i = 0; i < ctxs.Count(); ++i)
        {
            ctxs.Item(i)->TTDWellKnownInfo->MarkWellKnownObjects_TTD(this->m_marks);
        }

        double endTime = timer.Now();
        this->m_pendingSnap->MarkTime = (endTime - startTime) / 1000.0;
    }
    Var JavascriptExternalFunction::StdCallExternalFunctionThunk(RecyclableObject* function, CallInfo callInfo, ...)
    {
        RUNTIME_ARGUMENTS(args, callInfo);
        JavascriptExternalFunction* externalFunction = static_cast<JavascriptExternalFunction*>(function);

        externalFunction->PrepareExternalCall(&args);

        ScriptContext * scriptContext = externalFunction->type->GetScriptContext();
        AnalysisAssert(scriptContext);
        Var result = NULL;

        BEGIN_LEAVE_SCRIPT(scriptContext)
        {
            result = externalFunction->stdCallNativeMethod(function, ((callInfo.Flags & CallFlags_New) != 0), args.Values, args.Info.Count, externalFunction->callbackState);
        }
        END_LEAVE_SCRIPT(scriptContext);

        if (result != nullptr && !Js::TaggedNumber::Is(result))
        {
            if (!Js::RecyclableObject::Is(result))
            {
                Js::Throw::InternalError();
            }

            Js::RecyclableObject * obj = Js::RecyclableObject::FromVar(result);

            // For JSRT, we could get result marshalled in different context.
            bool isJSRT = !(scriptContext->GetThreadContext()->GetIsThreadBound());
            if (!isJSRT && obj->GetScriptContext() != scriptContext)
            {
                Js::Throw::InternalError();
            }
        }


        if (scriptContext->HasRecordedException())
        {
            bool considerPassingToDebugger = false;
            JavascriptExceptionObject* recordedException = scriptContext->GetAndClearRecordedException(&considerPassingToDebugger);
            if (recordedException != nullptr)
            {
                // If this is script termination, then throw ScriptAbortExceptio, else throw normal Exception object.
                if (recordedException == scriptContext->GetThreadContext()->GetPendingTerminatedErrorObject())
                {
                    throw Js::ScriptAbortException();
                }
                else
                {
                    JavascriptExceptionOperators::RethrowExceptionObject(recordedException, scriptContext, considerPassingToDebugger);
                }
            }
        }

        return externalFunction->FinishExternalCall(result);
    }
Ejemplo n.º 4
0
 // static
 Var CrossSite::MarshalVar(ScriptContext* scriptContext, Var value, bool fRequestWrapper)
 {
     // value might be null from disable implicit call
     if (value == nullptr || Js::TaggedNumber::Is(value))
     {
         return value;
     }
     Js::RecyclableObject* object =  RecyclableObject::UnsafeFromVar(value);
     if (fRequestWrapper || scriptContext != object->GetScriptContext())
     {
         return MarshalVarInner(scriptContext, object, fRequestWrapper);
     }
     return value;
 }
Ejemplo n.º 5
0
    void SnapshotExtractor::MarkVisitVar(Js::Var var)
    {
        AssertMsg(var != nullptr, "I don't think this should happen but not 100% sure.");
        AssertMsg(Js::JavascriptOperators::GetTypeId(var) < Js::TypeIds_Limit || Js::RecyclableObject::FromVar(var)->CanHaveInterceptors(), "Not cool.");

        //We don't need to visit tagged things
        if(JsSupport::IsVarTaggedInline(var))
        {
            return;
        }

        if(JsSupport::IsVarPrimitiveKind(var))
        {
            if(this->m_marks.MarkAndTestAddr<MarkTableTag::PrimitiveObjectTag>(var))
            {
                Js::RecyclableObject* obj = Js::RecyclableObject::FromVar(var);
                this->MarkVisitType(obj->GetType());
            }
        }
        else
        {
            AssertMsg(JsSupport::IsVarComplexKind(var), "Shouldn't be anything else");

            if(this->m_marks.MarkAndTestAddr<MarkTableTag::CompoundObjectTag>(var))
            {
                Js::RecyclableObject* obj = Js::RecyclableObject::FromVar(var);

                //do this here instead of in mark visit type as it wants the dynamic object as well
                if(Js::DynamicType::Is(obj->GetTypeId()))
                {
                    Js::DynamicObject* dynObj = Js::DynamicObject::FromVar(obj);
                    if(dynObj->GetDynamicType()->GetTypeHandler()->IsDeferredTypeHandler())
                    {
                        dynObj->GetDynamicType()->GetTypeHandler()->EnsureObjectReady(dynObj);
                    }
                }
                this->MarkVisitType(obj->GetType());

                this->m_worklist.Enqueue(obj);
            }
        }
    }
    Var JavascriptExternalFunction::StdCallExternalFunctionThunk(RecyclableObject* function, CallInfo callInfo, ...)
    {
        ARGUMENTS(args, callInfo);
        JavascriptExternalFunction* externalFunction = static_cast<JavascriptExternalFunction*>(function);

        externalFunction->PrepareExternalCall(&args);

        ScriptContext * scriptContext = externalFunction->type->GetScriptContext();
        AnalysisAssert(scriptContext);

        if (args.Info.Count > USHORT_MAX)
        {
            // Due to compat reasons, stdcall external functions expect a ushort count of args.
            // To support more than this we will need a new API.
            Js::JavascriptError::ThrowTypeError(scriptContext, JSERR_ArgListTooLarge);
        }

        Var result = nullptr;
        Assert(callInfo.Count > 0);

        StdCallJavascriptMethodInfo info = {
            args[0],
            args.HasNewTarget() ? args.GetNewTarget() : args.IsNewCall() ? function : scriptContext->GetLibrary()->GetUndefined(),
            args.IsNewCall()
        };

#if ENABLE_TTD
        if(scriptContext->ShouldPerformRecordOrReplayAction())
        {
            result = JavascriptExternalFunction::HandleRecordReplayExternalFunction_StdThunk(function, callInfo, args, scriptContext);
        }
        else
        {
            BEGIN_LEAVE_SCRIPT(scriptContext)
            {
                result = externalFunction->stdCallNativeMethod(function, args.Values, static_cast<USHORT>(args.Info.Count), &info, externalFunction->callbackState);
            }
            END_LEAVE_SCRIPT(scriptContext);
        }
#else
        BEGIN_LEAVE_SCRIPT(scriptContext)
        {
            result = externalFunction->stdCallNativeMethod(function, args.Values, static_cast<USHORT>(args.Info.Count), &info, externalFunction->callbackState);
        }
        END_LEAVE_SCRIPT(scriptContext);
#endif

        bool marshallingMayBeNeeded = false;
        if (result != nullptr)
        {
            marshallingMayBeNeeded = Js::RecyclableObject::Is(result);
            if (marshallingMayBeNeeded)
            {
                Js::RecyclableObject * obj = Js::RecyclableObject::FromVar(result);

                // For JSRT, we could get result marshalled in different context.
                bool isJSRT = scriptContext->GetThreadContext()->IsJSRT();
                marshallingMayBeNeeded = obj->GetScriptContext() != scriptContext;
                if (!isJSRT && marshallingMayBeNeeded)
                {
                    Js::Throw::InternalError();
                }
            }
        }

        if (scriptContext->HasRecordedException())
        {
            bool considerPassingToDebugger = false;
            JavascriptExceptionObject* recordedException = scriptContext->GetAndClearRecordedException(&considerPassingToDebugger);
            if (recordedException != nullptr)
            {
                // If this is script termination, then throw ScriptAbortExceptio, else throw normal Exception object.
                if (recordedException == scriptContext->GetThreadContext()->GetPendingTerminatedErrorObject())
                {
                    throw Js::ScriptAbortException();
                }
                else
                {
                    JavascriptExceptionOperators::RethrowExceptionObject(recordedException, scriptContext, considerPassingToDebugger);
                }
            }
        }

        if (result == nullptr)
        {
            result = scriptContext->GetLibrary()->GetUndefined();
        }
        else if (marshallingMayBeNeeded)
        {
            result = CrossSite::MarshalVar(scriptContext, result);
        }

        return result;
    }
Ejemplo n.º 7
0
    void RuntimeContextInfo::GatherKnownObjectToPathMap(Js::ScriptContext* ctx)
    {
        JsUtil::List<const Js::PropertyRecord*, HeapAllocator> propertyRecordList(&HeapAllocator::Instance);

        this->EnqueueRootPathObject(_u("global"), ctx->GetGlobalObject());
        this->EnqueueRootPathObject(_u("null"), ctx->GetLibrary()->GetNull());
        this->EnqueueRootPathObject(_u("undeclBlockVar"), Js::RecyclableObject::FromVar(ctx->GetLibrary()->GetUndeclBlockVar()));

        this->EnqueueRootPathObject(_u("_defaultAccessor"), ctx->GetLibrary()->GetDefaultAccessorFunction());

        if(ctx->GetConfig()->IsErrorStackTraceEnabled())
        {
            this->EnqueueRootPathObject(_u("_stackTraceAccessor"), ctx->GetLibrary()->GetStackTraceAccessorFunction());
        }

        this->EnqueueRootPathObject(_u("_throwTypeErrorRestrictedPropertyAccessor"), ctx->GetLibrary()->GetThrowTypeErrorRestrictedPropertyAccessorFunction());

        if(ctx->GetConfig()->IsES6PromiseEnabled())
        {
            this->EnqueueRootPathObject(_u("_identityFunction"), ctx->GetLibrary()->GetIdentityFunction());
            this->EnqueueRootPathObject(_u("_throwerFunction"), ctx->GetLibrary()->GetThrowerFunction());
        }
       // ArrayIteratorPrototype is not created when we have JsBuiltins, it it created on-demand only
#ifdef ENABLE_JS_BUILTINS
        if (ctx->IsJsBuiltInEnabled())
        {
            ctx->GetLibrary()->EnsureBuiltInEngineIsReady();
        }
#endif
        this->EnqueueRootPathObject(_u("_arrayIteratorPrototype"), ctx->GetLibrary()->GetArrayIteratorPrototype());
        this->EnqueueRootPathObject(_u("_mapIteratorPrototype"), ctx->GetLibrary()->GetMapIteratorPrototype());
        this->EnqueueRootPathObject(_u("_setIteratorPrototype"), ctx->GetLibrary()->GetSetIteratorPrototype());
        this->EnqueueRootPathObject(_u("_stringIteratorPrototype"), ctx->GetLibrary()->GetStringIteratorPrototype());

        this->EnqueueRootPathObject(_u("_generatorNextFunction"), ctx->GetLibrary()->EnsureGeneratorNextFunction());
        this->EnqueueRootPathObject(_u("_generatorReturnFunction"), ctx->GetLibrary()->EnsureGeneratorReturnFunction());
        this->EnqueueRootPathObject(_u("_generatorThrowFunction"), ctx->GetLibrary()->EnsureGeneratorThrowFunction());
        this->EnqueueRootPathObject(_u("_generatorFunctionConstructor"), ctx->GetLibrary()->GetGeneratorFunctionConstructor());
        this->EnqueueRootPathObject(_u("_asyncFunctionConstructor"), ctx->GetLibrary()->GetAsyncFunctionConstructor());

        uint32 counter = 0;
        while(!this->m_worklist.Empty())
        {
            Js::RecyclableObject* curr = this->m_worklist.Dequeue();

            counter++;

            ////
            //Handle the standard properties for all object types

            //load propArray with all property names
            propertyRecordList.Clear();
            LoadAndOrderPropertyNames(curr, propertyRecordList);

            //access each property and process the target objects as needed
            for(int32 i = 0; i < propertyRecordList.Count(); ++i)
            {
                const Js::PropertyRecord* precord = propertyRecordList.Item(i);

                Js::Var getter = nullptr;
                Js::Var setter = nullptr;
                if(curr->GetAccessors(precord->GetPropertyId(), &getter, &setter, ctx))
                {
                    if(getter != nullptr && !Js::JavascriptOperators::IsUndefinedObject(getter))
                    {
                        TTDAssert(Js::JavascriptFunction::Is(getter), "The getter is not a function?");
                        this->EnqueueNewPathVarAsNeeded(curr, getter, precord, _u(">"));
                    }

                    if(setter != nullptr && !Js::JavascriptOperators::IsUndefinedObject(setter))
                    {
                        TTDAssert(Js::JavascriptFunction::Is(setter), "The setter is not a function?");
                        this->EnqueueNewPathVarAsNeeded(curr, Js::RecyclableObject::FromVar(setter), precord, _u("<"));
                    }
                }
                else
                {
                    Js::Var pitem = nullptr;
                    BOOL isproperty = Js::JavascriptOperators::GetOwnProperty(curr, precord->GetPropertyId(), &pitem, ctx, nullptr);
                    TTDAssert(isproperty, "Not sure what went wrong.");

                    this->EnqueueNewPathVarAsNeeded(curr, pitem, precord, nullptr);
                }
            }

            //shouldn't have any dynamic array valued properties
            if(Js::DynamicType::Is(curr->GetTypeId())) 
            {
                Js::ArrayObject* parray = Js::DynamicObject::FromVar(curr)->GetObjectArray();
                if(parray != nullptr)
                {
                    this->EnqueueNewPathVarAsNeeded(curr, parray, _u("_object_array_"));
                }
            }

            Js::RecyclableObject* proto = curr->GetPrototype();
            bool skipProto = (proto == nullptr) || Js::JavascriptOperators::IsUndefinedOrNullType(proto->GetTypeId());
            if(!skipProto)
            {
                this->EnqueueNewPathVarAsNeeded(curr, proto, _u("_proto_"));
            }

            curr->ProcessCorePaths();
        }

        SortDictIntoListOnNames<Js::RecyclableObject*>(this->m_coreObjToPathMap, this->m_sortedObjectList, this->m_nullString);
        SortDictIntoListOnNames<Js::FunctionBody*>(this->m_coreBodyToPathMap, this->m_sortedFunctionBodyList, this->m_nullString);
        SortDictIntoListOnNames<Js::DebuggerScope*>(this->m_coreDbgScopeToPathMap, this->m_sortedDbgScopeList, this->m_nullString);
    }
    Var JavascriptExternalFunction::StdCallExternalFunctionThunk(RecyclableObject* function, CallInfo callInfo, ...)
    {
        ARGUMENTS(args, callInfo);
        JavascriptExternalFunction* externalFunction = static_cast<JavascriptExternalFunction*>(function);

        externalFunction->PrepareExternalCall(&args);

        ScriptContext * scriptContext = externalFunction->type->GetScriptContext();
        AnalysisAssert(scriptContext);
        Var result = NULL;

#if ENABLE_TTD
        if(scriptContext->ShouldPerformRecordOrReplayAction())
        {
            result = JavascriptExternalFunction::HandleRecordReplayExternalFunction_StdThunk(function, callInfo, args, scriptContext);
        }
        else
        {
            BEGIN_LEAVE_SCRIPT(scriptContext)
            {
                result = externalFunction->stdCallNativeMethod(function, ((callInfo.Flags & CallFlags_New) != 0), args.Values, args.Info.Count, externalFunction->callbackState);
            }
            END_LEAVE_SCRIPT(scriptContext);
        }
#else
        BEGIN_LEAVE_SCRIPT(scriptContext)
        {
            result = externalFunction->stdCallNativeMethod(function, ((callInfo.Flags & CallFlags_New) != 0), args.Values, args.Info.Count, externalFunction->callbackState);
        }
        END_LEAVE_SCRIPT(scriptContext);
#endif

        if (result != nullptr && !Js::TaggedNumber::Is(result))
        {
            if (!Js::RecyclableObject::Is(result))
            {
                Js::Throw::InternalError();
            }

            Js::RecyclableObject * obj = Js::RecyclableObject::FromVar(result);

            // For JSRT, we could get result marshalled in different context.
            bool isJSRT = scriptContext->GetThreadContext()->IsJSRT();
            if (!isJSRT && obj->GetScriptContext() != scriptContext)
            {
                Js::Throw::InternalError();
            }
        }

        if (scriptContext->HasRecordedException())
        {
            bool considerPassingToDebugger = false;
            JavascriptExceptionObject* recordedException = scriptContext->GetAndClearRecordedException(&considerPassingToDebugger);
            if (recordedException != nullptr)
            {
                // If this is script termination, then throw ScriptAbortExceptio, else throw normal Exception object.
                if (recordedException == scriptContext->GetThreadContext()->GetPendingTerminatedErrorObject())
                {
                    throw Js::ScriptAbortException();
                }
                else
                {
                    JavascriptExceptionOperators::RethrowExceptionObject(recordedException, scriptContext, considerPassingToDebugger);
                }
            }
        }

        if (result == nullptr)
        {
            result = scriptContext->GetLibrary()->GetUndefined();
        }
        else
        {
            result = CrossSite::MarshalVar(scriptContext, result);
        }

        return result;
    }