210 lines
6.5 KiB
C++
210 lines
6.5 KiB
C++
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1995.
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// File: tls.h
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// Contents: Manage thread local storage for UrlMon.
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// The non-inline routines are in ..\mon\tls.cxx
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// Classes:
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// Functions:
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// History: 12-02-95 JohannP (Johann Posch) Created
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#ifndef _TLS_H_
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#define _TLS_H_
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#include "clist.hxx"
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#include "cookie.hxx"
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class CTransactionMgr;
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class CCDLPacketMgr;
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class CCodeDownload;
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class CDownload;
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// notification/scheduler
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// forward declarations (in order to avoid type casting when accessing
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// data members of the SOleTlsData structure).
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extern DWORD gTlsIndex; // global Index for TLS
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// Enum: URLMKTLSFLAGS
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// Synopsys: bit values for dwFlags field of SUrlMkTlsData. If you just want
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// to store a BOOL in TLS, use this enum and the dwFlag field.
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typedef enum tagURLMKTLSFLAGS
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{
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URLMKTLS_LOCALTID = 1, // whether TID is in current process or not
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URLMKTLS_UUIDINITIALIZED = 2, // whether logical thread was init'd
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URLMKTLS_INTHREADDETACH = 4, // Whether we are in thread detach. Needed
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// due to NT's special thread detach rules.
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} URLMKTLSFLAGS;
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// Structure: SUrlMkTlsData
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// Synopsis: structure holding per thread state needed by UrlMon
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typedef struct tagSUrlMkTlsData
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{
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DWORD dwApartmentID; // Per thread "process ID"
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DWORD dwFlags; // see URLMKTLSFLAGS above
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HWND hwndUrlMkNotify; // notification window
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LONG cDispatchLevel; // dispatch nesting level
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CTransactionMgr *pCTransMgr; // transaction manager
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#ifdef PER_THREAD
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CMediaTypeHolder *pCMediaHolder; // media types register per apartment
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#endif //PER_THREAD
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CList<CCodeDownload *,CCodeDownload *>*
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pCodeDownloadList; // linked list of pointers to
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// CCodeDownload objects ongoing on
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// this thread
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CCookie<CDownload*> *pTrustCookie;
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// only the cookie owner can do
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// setup/winverifytrust
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// Others wait for the
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// cookie to enter these phases
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// Cookie availabilty is posted
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// as a msg. We can't uses any
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// regular sync apis as this
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// is protecting execution by the
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// same thread in a diff msg.
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CCookie<CCodeDownload*>
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*pSetupCookie;
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CCDLPacketMgr *pCDLPacketMgr; // per thread packet manager
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// A packet is a unit
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// of work that takes time eg.
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// trust verifcation of a piece
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// setup of a piece or INF
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// processing of one piece.
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// To be able to have the
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// client be responsive with UI
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// and abort capabilty we need
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// to split out work into as
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// small units as possible
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// and queue up these packets
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// Packets get run on a timer per
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// thread.
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CList<LPCWSTR ,LPCWSTR >*
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pRejectedFeaturesList;
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// linked list of pointers to
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// features or code downloads that
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// the use has explicitly rejected
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// on this thread
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#if DBG==1
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LONG cTraceNestingLevel; // call nesting level for UrlMonTRACE
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#endif
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} SUrlMkTlsData;
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// class CUrlMkTls
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// Synopsis: class to abstract thread-local-storage in UrlMon.
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// Notes: To use Tls in UrlMon, functions should define an instance of
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// this class on their stack, then use the -> operator on the
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// instance to access fields of the SOleTls structure.
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// There are two instances of the ctor. One just Assert's that
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// the SUrlMkTlsData has already been allocated for this thread. Most
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// internal code should use this ctor, since we can assert that if
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// the thread made it this far into our code, tls has already been
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// checked.
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// The other ctor will check if SUrlMkTlsData exists, and attempt to
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// allocate and initialize it if it does not. This ctor will
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// return an HRESULT. Functions that are entry points to UrlMon
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// should use this version.
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// History: 12-02-95 JohannP (Johann Posch) Created
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class CUrlMkTls
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{
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public:
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CUrlMkTls(HRESULT &hr);
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// to get direct access to the data structure
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SUrlMkTlsData * operator->(void);
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private:
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HRESULT TLSAllocData(); // allocates an SUrlMkTlsData structure
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SUrlMkTlsData * _pData; // ptr to UrlMon TLS data
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};
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// Method: CUrlMkTls::CUrlMkTls
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// Synopsis: ctor for UrlMon Tls object.
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// Notes: Peripheral UrlMon code that can not assume that some outer-layer
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// function has already verified the existence of the SUrlMkTlsData
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// structure for the current thread should use this version of
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// the ctor.
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// History: 12-02-95 JohannP (Johann Posch) Created
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inline CUrlMkTls::CUrlMkTls(HRESULT &hr)
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{
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_pData = (SUrlMkTlsData *) TlsGetValue(gTlsIndex);
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if (_pData)
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hr = S_OK;
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else
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hr = TLSAllocData();
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}
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// Member: CUrlMkTls::operator->(void)
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// Synopsis: returns ptr to the data structure
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// History: 12-02-95 JohannP (Johann Posch) Created
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inline SUrlMkTlsData * CUrlMkTls::operator->(void)
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{
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return _pData;
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}
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typedef struct URLMON_TS
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{
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DWORD _dwTID;
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HWND _hwndNotify;
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URLMON_TS* _pNext;
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} URLMON_TS, *LPURLMON_TS;
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#endif // _TLS_H_
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