168 lines
5.1 KiB
C++
168 lines
5.1 KiB
C++
//+--------------------------------------------------------------
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//
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// Microsoft Windows
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// Copyright (C) Microsoft Corporation, 1992 - 1992.
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//
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// File: dfxact.cxx
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//
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// Contents: CDocFile transactioning methods
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//
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// History: 22-Jan-92 DrewB Created
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//
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//---------------------------------------------------------------
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#include <dfhead.cxx>
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#pragma hdrstop
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//+--------------------------------------------------------------
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//
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// Member: CDocFile::BeginCommitFromChild, public
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//
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// Synopsis: Start two-phase commit, requested by child
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//
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// Arguments: [ulChanged] - Update list
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// [dwFlags] - Flags controlling commit
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// [pdfChild] - Child object
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//
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// Returns: Appropriate status code
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//
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// History: 04-Nov-91 DrewB Created
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//
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//---------------------------------------------------------------
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SCODE CDocFile::BeginCommitFromChild(CUpdateList &ulChanged,
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DWORD const dwFlags,
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CWrappedDocFile *pdfChild)
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{
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SCODE sc;
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TIME_T tm;
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olDebugOut((DEB_ITRACE, "In CDocFile::BeginCommitFromChild:%p("
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"%p, %lX, %p)\n", this, ulChanged.GetHead(), dwFlags,
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pdfChild));
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UNREFERENCED_PARM(dwFlags);
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// Copy-on-write will back these changes out if they fail
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if (pdfChild->GetDirty() & DIRTY_CREATETIME)
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{
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olVerSucc(pdfChild->GetTime(WT_CREATION, &tm));
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olChk(SetTime(WT_CREATION, tm));
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}
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if (pdfChild->GetDirty() & DIRTY_MODIFYTIME)
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{
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olVerSucc(pdfChild->GetTime(WT_MODIFICATION, &tm));
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olChk(SetTime(WT_MODIFICATION, tm));
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}
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if (pdfChild->GetDirty() & DIRTY_ACCESSTIME)
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{
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olVerSucc(pdfChild->GetTime(WT_ACCESS, &tm));
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olChk(SetTime(WT_ACCESS, tm));
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}
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if (pdfChild->GetDirty() & DIRTY_CLASS)
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{
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CLSID clsid;
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olVerSucc(pdfChild->GetClass(&clsid));
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olChk(SetClass(clsid));
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}
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if (pdfChild->GetDirty() & DIRTY_STATEBITS)
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{
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DWORD grfStateBits;
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olVerSucc(pdfChild->GetStateBits(&grfStateBits));
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olChk(SetStateBits(grfStateBits, 0xffffffff));
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}
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_ulChangedHolder = ulChanged;
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sc = ApplyChanges(ulChanged);
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olDebugOut((DEB_ITRACE, "Out CDocFile::BeginCommitFromChild\n"));
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EH_Err:
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return sc;
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}
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//+--------------------------------------------------------------
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//
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// Member: CDocFile::EndCommitFromChild
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//
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// Synopsis: Ends two-phase commit, requested by child
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//
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// Arguments: [df] - COMMIT/ABORT
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// [pdfChild] - Child object
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//
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// History: 07-Nov-91 DrewB Created
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//
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//---------------------------------------------------------------
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void CDocFile::EndCommitFromChild(DFLAGS const df,
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CWrappedDocFile *pdfChild)
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{
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CUpdate *pud;
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olDebugOut((DEB_ITRACE, "In CDocFile::EndCommitFromChild:%p(%X, %p)\n",
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this, df, pdfChild));
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UNREFERENCED_PARM(pdfChild);
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if (P_COMMIT(df))
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{
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// Finalize updates
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for (pud = _ulChangedHolder.GetHead(); pud; pud = pud->GetNext())
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if (pud->IsCreate())
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// Remove reference to child's XSM so that list destruction
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// won't free it
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pud->SetXSM(NULL);
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_ulChangedHolder.Empty();
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}
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else
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{
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for (pud = _ulChangedHolder.GetTail(); pud; pud = pud->GetPrev())
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if (pud->IsCreate())
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{
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// We need to do two things:
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//
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// Break any SetBase links that might have been created
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//
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// Return newly created objects to the creators so
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// that they can be returned to the preallocation
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// pool
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if ((pud->GetFlags() & (ULF_TYPEFLAGS & STGTY_REAL)) ==
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STGTY_STORAGE)
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{
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CWrappedDocFile *pwdf = (CWrappedDocFile *)pud->GetXSM();
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CDocFile *pddf;
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if (pwdf != NULL &&
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(pddf = (CDocFile *)pwdf->GetBase()) != NULL)
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{
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// AddRef so SetBase won't free memory
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pddf->AddRef();
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pwdf->SetBase(NULL);
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ReturnDocFile(pddf);
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}
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}
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else
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{
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CTransactedStream *pwstm = (CTransactedStream *)pud->
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GetXSM();
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CDirectStream *pdstm;
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olAssert((pud->GetFlags() & (ULF_TYPEFLAGS & STGTY_REAL))
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== STGTY_STREAM);
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if (pwstm != NULL &&
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(pdstm = (CDirectStream *)pwstm->GetBase()) != NULL)
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{
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// AddRef so SetBase won't free memory
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pdstm->AddRef();
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pwstm->SetBase(NULL);
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ReturnStream(pdstm);
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}
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}
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}
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_ulChangedHolder.Unlink();
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}
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olDebugOut((DEB_ITRACE, "Out CDocFile::EndCommitFromChild\n"));
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}
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