author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Mon, 04 Oct 2010 02:21:43 +0300 | |
changeset 79 | cf589eb1e31e |
parent 40 | 34fc115b8742 |
child 84 | 486e9e9c45a7 |
permissions | -rw-r--r-- |
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// Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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/** |
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@file |
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@internalComponent |
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*/ |
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#ifndef SYMBIAN_NETWORKING_CFTRANSPORT_H |
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#define SYMBIAN_NETWORKING_CFTRANSPORT_H |
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#include <elements/nm_address.h> |
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#include <elements/nm_transport.h> |
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#include <elements/metavirtctor.h> |
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|
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/** Synchronously dispatching within the same thread is strongly discouraged but relied upon by the legacy EINTSOCK interface. |
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Between threads the function is supported but the dispatch is not synchronous (risk of deadlock) |
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*/ |
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#define SYMBIAN_CFTRANSPORT_SUPPORT_SYNC_SEND |
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namespace NetInterfaces |
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{ |
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class TInterfaceControl; |
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} |
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namespace CommsFW |
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{ |
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|
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/** |
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CFTransport panic category |
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*/ |
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_LIT(KCFTransportPanic, "CFTransport"); |
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|
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/** Panics generated by the Comms Channels |
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*/ |
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enum TCFTransportPanics |
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{ |
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/** Peer failing to drain input properly |
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*/ |
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ECFTransPeerDrainFailure = 0, |
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/** Invalid interface registration, eg unsupported or duplicate |
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*/ |
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ECFTransBadRegistration = 1, |
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/** Cookie invalid or corrupt. If null then common causes are forgetting to initialise at all or with TCFClientSignalBase-derived classes |
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failing to chain the metadata attribute table to the parent, eg END_ATTRIBUTE_TABLE_BASE(TCFSignalExtnBase, 0) |
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*/ |
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ECFTransInvalidCookie = 2, |
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/** No legacy message handler registered and a legacy message was received |
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*/ |
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ECFTransLegacyHandlerAbsent = 3, |
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/** Invalid worker thread id |
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*/ |
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ECFTransInvalidWorkerId = 4, |
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/** No transport to worker |
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*/ |
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ECFTransAbsentWorker = 5, |
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/** Attempt to register a handler for an interface already registered - must first deregister original |
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*/ |
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ECFTransDuplicateHandler = 6, |
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/** Use of a function requiring the global thread register when the pointer to it has not been set. |
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Without the global register many operations on peer threads are impossible. |
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*/ |
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ECFTransThreadRegisterUnspecified = 7, |
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/** RCFInterfaceBase not opened with recipient peer details |
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*/ |
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ECFTransNotOpened = 8, |
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/** Internal fault not directly generated by client activity |
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*/ |
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ECFTransItfClassFault = 8, |
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/** After Leave()ing from the original dispatch the recipient dispatch also left from the leave-handling |
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dispatch. This is a fatal error because a common requirement for handling the first leave is sending |
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an error signal; leaving again suggests that the code is not handling the possibility of a Leave() |
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properly, rather than explicitly opting to ignore it. |
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*/ |
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ECFTransLeaveFromLeaveHandler = 9, |
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/** Message recieved for an object whose interface cookie has already been deregistered (ie object probably deleted). This indicates a protocol |
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failure: the recipient interface's must remain registered until all messages for it have been received. A common approach is the sending of a |
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sign-off message guaranteeing no further communication from a node (analogous to a TCP FIN or a CommsChan PIG) |
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*/ |
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ECFTransStaleCookie = 10, |
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/** More interfaces have been deregistered than were ever registered. Because the particular cookies aren't tracked it isn't necessarily the |
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current deregistration that is at fault |
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*/ |
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ECFExcessInterfaceDeregistration = 11, |
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/** Interface registration with a non-null cookie is not allowed, as it's too likely that it represents a fault such as a double registration. |
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If it really is a safe and proper use (eg of an aliased cookie) then TCookieOp::SetNull() the cookie first |
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*/ |
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ECFInterfaceRegistrationOverwrite = 12, |
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/** Interface not registered for dispatch |
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*/ |
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ECFInterfaceNotRegistered = 13, |
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/** Queue sizing error. This is probably an internal fault. |
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*/ |
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ECFInvalidQueueSize = 14, |
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}; |
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IMPORT_C void Panic(TCFTransportPanics aReason); |
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_LIT8(KLogFwTransport, "Trans"); |
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#ifdef SYMBIAN_TRACE_ENABLE |
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// Markers to enable correlation between utrace and CDU logs. |
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_LIT8(KLogFwMarker, "Mark"); |
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#endif |
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typedef TUint16 TWorkerId; |
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static const TUint16 KInvalidWorkerId = 0xFFFF; |
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static const TUint16 KMaxWorkerId = 16; |
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// |
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// Cookies |
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// |
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class TCFMessage; |
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class RCFChannelMsgQueues; |
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typedef TInt TId; |
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// |
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// Thread knowledge |
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// |
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class MGlobalThreadRegister |
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{ |
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public: |
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virtual TWorkerId UpperBoundWorkerId() const = 0; |
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virtual RAllocator& WorkerHeap(TWorkerId aWorkerId) const = 0; |
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virtual void PanicWorker(TWorkerId aWorkerId, const TDesC& aCategory, TInt aReason) const = 0; |
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}; |
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class MWorkerThreadRegister : public MGlobalThreadRegister |
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{ |
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public: |
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virtual TWorkerId SelfWorkerId() const = 0; |
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}; |
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class TWorkerThreadDataBase |
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{ |
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public: |
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IMPORT_C void Init(TWorkerId aWorkerId, TBool aHoldingReference); |
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IMPORT_C void Clear(); |
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inline TBool IsValid() const; |
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public: |
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TWorkerId iWorkerId; |
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TThreadId iThreadId; |
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RThread iThread; |
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RAllocator* iHeap; |
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TBool iHoldingReference; |
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}; |
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class CWorkerThreadDataGlobalsBase : public CBase |
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{ |
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protected: |
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inline CWorkerThreadDataGlobalsBase(); |
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inline ~CWorkerThreadDataGlobalsBase(); |
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inline void ConstructL(TInt aWorkerDataSize, TWorkerId aUpperBoundId); |
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protected: |
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TWorkerThreadDataBase* iWorkers; |
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}; |
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template<class TWTD, TInt TUpperThreadIdBound> |
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class CWorkerThreadDataGlobals : public CWorkerThreadDataGlobalsBase, public MGlobalThreadRegister |
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{ |
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public: |
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static CWorkerThreadDataGlobals<TWTD, TUpperThreadIdBound>* NewL(); |
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TWorkerId UpperBoundWorkerId() const; |
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TWTD* GetWorkerGlobals(TWorkerId aWorker) const; |
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TBool WorkerPresent(TWorkerId aId) const; |
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RAllocator& WorkerHeap(TWorkerId aWorkerId) const; |
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void PanicWorker(TWorkerId aWorkerId, const TDesC& aCategory, TInt aReason) const; |
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protected: |
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CWorkerThreadDataGlobals(); |
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inline void ConstructL(TInt aWorkerDataSize, TWorkerId aUpperBoundId); |
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}; |
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template<class TWTD, TInt TUpperThreadIdBound> |
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class CWorkerThreadRegister : public CBase, public MWorkerThreadRegister |
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{ |
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public: |
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static CWorkerThreadRegister<TWTD, TUpperThreadIdBound>* NewL(TWorkerId aSelfId, CWorkerThreadDataGlobals<TWTD, TUpperThreadIdBound>* aGlobalThreadRegister); |
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void SetGlobalThreadRegister(CWorkerThreadDataGlobals<TWTD, TUpperThreadIdBound>* aGlobalThreadRegister); |
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TWTD* GetWorkerGlobals(TWorkerId aWorker) const; |
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TWorkerId UpperBoundWorkerId() const; |
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TBool WorkerPresent(TWorkerId aWorkerId) const; |
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RAllocator& WorkerHeap(TWorkerId aWorkerId) const; |
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void PanicWorker(TWorkerId aWorkerId, const TDesC& aCategory, TInt aReason) const; |
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TWorkerId SelfWorkerId() const; |
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TWTD* GetSelfWorkerGlobals() const; |
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private: |
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CWorkerThreadRegister<TWTD, TUpperThreadIdBound>(TWorkerId aSelfId, CWorkerThreadDataGlobals<TWTD, TUpperThreadIdBound>* aGlobalThreadRegister); |
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private: |
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TWorkerId iSelfId; |
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CWorkerThreadDataGlobals<TWTD, TUpperThreadIdBound>* iGlobals; |
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}; |
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//These APIs have been separated from the transport abstraction (MTransportSender) |
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//and are here only to satisfy the comms transport implementation |
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class MCommsTransportSender : public Messages::MTransportSender |
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{ |
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public: |
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virtual void PostMessage(const Messages::TRuntimeCtxId& aPostFrom, const Messages::TRuntimeCtxId& aPostTo, const Meta::SMetaData& aMessage); |
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//Legacy & helpers |
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virtual void PostMessage(const TCFMessage& aMessage) = 0; |
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virtual void PostMessage(const Messages::TRuntimeCtxId& aPostFrom, const Messages::TRuntimeCtxId& aPostTo, const TDesC8& aMessage) = 0; |
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#ifdef SYMBIAN_CFTRANSPORT_SUPPORT_SYNC_SEND |
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/** The caller intends to block for some out-of-band synchronisation mechanism (eg a semaphore) and so dispatch |
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must be done immediately as part of this sending call if the peer object is running in the same worker thread, so |
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that the recipient can signal the caller if appropriate. Such synchronisation mechanisms are strongly discouraged |
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but exist in some legacy code. |
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@deprecated |
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*/ |
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virtual void SendMessageSync(const TCFMessage& aMessage) = 0; |
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#endif |
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}; |
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class MLegacyMessageReceiver |
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{ |
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public: |
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virtual void DispatchL(const TCFMessage& aMessage, TWorkerId aSenderId) = 0; |
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/** If the dispatching function Leave()s then control transfers here. This allows a carefully-written object to avoid |
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adding its own TRAP and still provide handling for a Leave, ie an efficiency gain. |
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*/ |
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virtual void OnDispatchLeave(const TCFMessage& /*aMessage*/, TWorkerId /*aSenderId*/, TInt /*aFirstDispatchLeaveReason*/) |
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{ |
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} |
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}; |
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class CCommsTransportImpl; |
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class CCFTransportHooks; |
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|
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class CCommsTransport : public CBase //PS removed inheritance not to export virtuals and |
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//hide CCommsTransportImpl. Polymorphism is given |
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//by CCommsTransportImpl. |
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{ |
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public: |
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IMPORT_C static CCommsTransport* NewL(MWorkerThreadRegister& aThreadRegister, const Meta::CMetaDataVirtualCtorInPlace* aVirtCtor, CCFTransportHooks* aHooksWalker); |
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IMPORT_C ~CCommsTransport(); |
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// From MTransportReceiver |
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IMPORT_C TInt RegisteredCount() const; |
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IMPORT_C void RegisterAddress(Messages::TRuntimeCtxId& aCookie); |
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IMPORT_C void DeregisterAddress(Messages::TRuntimeCtxId& aCookie); |
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// TCFMessage + legacy |
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IMPORT_C void RegisterLegacyInterface(MLegacyMessageReceiver* aLegacyInterface); |
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IMPORT_C void PostMessage(const TCFMessage& aMessage); |
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private: |
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// TCFMessage + legacy |
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IMPORT_C void PostMessage(const Messages::TRuntimeCtxId& aPostFrom, const Messages::TRuntimeCtxId& aPostTo, const TDesC8& aMessage); |
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#ifdef SYMBIAN_CFTRANSPORT_SUPPORT_IMPATIENCE |
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IMPORT_C TInt ImpatientPostMessage(const TCFMessage& aMessage); |
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IMPORT_C TInt ImpatientPostMessage(const Messages::TRuntimeCtxId& aPostFrom, const Messages::TRuntimeCtxId& aPostTo, const TDesC8& aMessage); |
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#endif |
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#ifdef SYMBIAN_CFTRANSPORT_SUPPORT_SYNC_SEND |
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IMPORT_C void SendMessageSync(const TCFMessage& aMessage); |
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#endif |
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|
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public: |
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// Transports peer threads via message queues, normally established by the RootServer via binding commands. The Request Id |
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// identifies the specific command being responded to; some callers need to store this for delayed reporting |
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IMPORT_C TInt EstablishTransportToPeer(TWorkerId aPeerId, const RCFChannelMsgQueues& aInboundQueues, const RCFChannelMsgQueues& aOutboundQueues); |
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IMPORT_C TInt DropTransportToPeer(TWorkerId aPeerId); |
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IMPORT_C TBool PeerReachable(TWorkerId aPeerId) const; |
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IMPORT_C void SetLastRequestIdConcerningPeer(TWorkerId aPeerId, CommsFW::TId aRequestId); |
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IMPORT_C CommsFW::TId LastRequestIdConcerningPeer(TWorkerId aPeerId) const; |
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IMPORT_C void SetDropTransportPending(TWorkerId aPeerId, TBool aDropPending); |
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IMPORT_C TBool IsDropTransportPending(TWorkerId aPeerId) const; |
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IMPORT_C void PreallocateQueueSpaceL(TInt aMinUndeliveredMessages); |
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IMPORT_C TWorkerId WorkerId() const; |
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IMPORT_C Messages::MTransportSender& GetSender(); |
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IMPORT_C Messages::MTransportReceiver& GetReceiver(); |
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private: |
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CCommsTransport() |
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{ |
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} |
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private: |
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CCommsTransportImpl* iImpl; |
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}; |
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#include <elements/cftransport.inl> |
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} // namespace CommsFW |
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#endif // SYMBIAN_NETWORKING_CFTRANSPORT_H |
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