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893 lines
18 KiB
893 lines
18 KiB
/*=====================================================================*
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Copyright (c) 1995-1997 Microsoft Corporation
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Module Name :
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wamxbase.cxx
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Abstract:
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Declaration of WAM_EXEC_BASE Object
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Author:
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David L. Kaplan ( DaveK ) 26-June-1997
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Environment:
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User Mode - Win32
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Project:
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WAM and ASP DLLs
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Revision History:
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======================================================================*/
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# include "isapip.hxx"
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# include "wamxbase.hxx"
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# include "gip.h"
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// MIDL-generated
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# include "iwr.h"
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::WAM_EXEC_BASE
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Constructor
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*/
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WAM_EXEC_BASE::WAM_EXEC_BASE(
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)
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:
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m_dwThreadIdIIS ( 0 ) // threadid 0 can't happen in IIS
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, m_dwThreadIdISA ( 0 ) // threadid 0 can't happen in IIS
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, m_pIWamReqIIS ( NULL )
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, m_pIWamReqInproc ( NULL )
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, m_pIWamReqSmartISA( NULL )
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, m_gipIWamRequest ( 0 )
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, _dwIsaKeepConn ( KEEPCONN_OLD_ISAPI ) // per fix to #117107
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{
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IF_DEBUG( WAM_IWAMREQ_REFS ) {
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//
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// NOTE when WAM_IWAMREQ_REFS flag is set, we use
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// m_dwSignature as a ref count for gip get/release
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// (rather than add another debug-only member)
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//
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m_dwSignature = 0;
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}
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}
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::InitWamExecBase
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Inits this structure by setting interface ptr members
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based on whether we are in-proc or oop.
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*/
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HRESULT
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WAM_EXEC_BASE::InitWamExecBase(
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IWamRequest * pIWamRequest
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)
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{
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HRESULT hr = NOERROR;
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//
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// cache pointer passed to us by IIS
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// and thread id on which IIS called us
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//
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// NOTE we don't addref the ptr because we may not
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// actually use it. If we decide to use the ptr
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// (e.g. in-proc, or oop-smart-ISA on IIS thread),
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// we will addref then.
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//
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m_pIWamReqIIS = pIWamRequest;
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m_dwThreadIdIIS = GetCurrentThreadId();
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if ( m_fInProcess ) {
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//
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// In-Proc
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//
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// Cache and addref wamreq, since we will use its ptr
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//
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m_pIWamReqInproc = pIWamRequest;
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m_pIWamReqInproc->AddRef();
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// Remember wamreq in m_pIWamReqSmartISA as well to make
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// wamreq available in all cases for smart (caching)
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// ISAPIs like ASP simply by referring to m_pIWamReqSmartISA
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m_pIWamReqSmartISA = m_pIWamReqInproc;
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} else {
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//
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// Out-Proc
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//
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// Register wamreq with gip-master
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//
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// NOTE gip.Register addref's implicitly
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//
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hr = RegisterIWamRequest( pIWamRequest );
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}
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return hr;
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} // WAM_EXEC_BASE::InitWamExecBase
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::CleanupWamExecBase
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Cleans up this structure by setting interface ptr members
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based on whether we are in-proc or oop.
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*/
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VOID
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WAM_EXEC_BASE::CleanupWamExecBase(
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)
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{
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if ( m_fInProcess ) {
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//
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// In-proc
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//
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// Release the member wamreq ptr we cached at init
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//
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DBG_ASSERT( AssertInpValid() );
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m_pIWamReqInproc->Release();
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m_pIWamReqInproc = NULL;
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m_pIWamReqSmartISA = NULL;
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} else {
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//
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// Out-proc
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//
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// Revoke the gip cookie
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//
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DBG_ASSERT( AssertOopValid() );
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RevokeIWamRequest();
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}
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return;
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} // WAM_EXEC_BASE::CleanupWamExecBase
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::RegisterIWamRequest
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For oop use only.
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Registers our W3-thread IWamRequest ptr with gip-master.
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Arguments:
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None
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Returns:
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HRESULT
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*/
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HRESULT
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WAM_EXEC_BASE::RegisterIWamRequest(
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IWamRequest * pIWamRequest
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)
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{
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HRESULT hr = NOERROR;
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DBG_ASSERT ( !m_fInProcess );
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DBG_ASSERT( pIWamRequest );
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//
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// Register iwamreq ptr with gip-master
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//
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if ( FAILED( hr = g_GIPAPI.Register(
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pIWamRequest
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, IID_IWamRequest
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, &m_gipIWamRequest
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))) {
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DBGPRINTF((
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DBG_CONTEXT
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, "g_GIPAPI.Register failed "
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"hr(%08x) "
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"m_gipIWamRequest(%08x) "
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"\n"
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, hr
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, m_gipIWamRequest
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));
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} else {
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DBG_ASSERT( AssertOopValid() );
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}
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return hr;
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}
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::RevokeIWamRequest
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If oop, revokes our gip-cookie.
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Arguments:
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None
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Returns:
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Nothing
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*/
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VOID
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WAM_EXEC_BASE::RevokeIWamRequest(
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)
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{
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DBG_ASSERT( AssertOopValid() );
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//
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// Revoke the gip-cookie we got from gip-master at init
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//
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g_GIPAPI.Revoke( m_gipIWamRequest );
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return;
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}
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::GetInterfaceForThread
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Caches a current-thread-valid IWamRequest ptr in m_pIWamReqSmartISA
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Arguments:
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None
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Returns:
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HRESULT
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*/
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HRESULT
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WAM_EXEC_BASE::GetInterfaceForThread(
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)
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{
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HRESULT hr = NOERROR;
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DBG_ASSERT( m_pIWamReqSmartISA == NULL );
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DBG_ASSERT( m_dwThreadIdISA == 0 );
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DBG_ASSERT( AssertOopValid() );
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m_dwThreadIdISA = GetCurrentThreadId();
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IF_DEBUG( WAM_THREADID ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetInterfaceForThread "
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"m_dwThreadIdIIS(%d) "
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"m_dwThreadIdISA(%d) "
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"\n"
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, this
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, m_dwThreadIdIIS
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, m_dwThreadIdISA
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));
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}
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if ( m_dwThreadIdISA == m_dwThreadIdIIS ) {
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//
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// ISA called us on mainline (IIS) thread
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// so we can simply use cached ptr passed in by IIS.
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//
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m_pIWamReqSmartISA = m_pIWamReqIIS;
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//
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// addref the ptr since we are using it.
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//
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m_pIWamReqSmartISA->AddRef();
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} else {
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//
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// ISA called us on its own thread
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// so we must get a ptr from gip.
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//
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hr = GetInterfaceFromGip( &m_pIWamReqSmartISA );
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IF_DEBUG( WAM_THREADID ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "GetInterfaceFromGip returned %d"
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"\n"
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, hr
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));
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DBGPRINTF((
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DBG_CONTEXT
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, "m_dwThreadIdISA(%d)"
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"\n"
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, m_dwThreadIdISA
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));
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}
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}
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return hr;
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} // WAM_EXEC_BASE::GetInterfaceForThread
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::ReleaseInterfaceForThread
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Releases the IWamRequest ptr cached in m_pIWamReqSmartISA
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Arguments:
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None
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Returns:
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HRESULT
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*/
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HRESULT
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WAM_EXEC_BASE::ReleaseInterfaceForThread(
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)
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{
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DBG_ASSERT( AssertOopValid() );
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if ( m_pIWamReqSmartISA == NULL ) {
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//
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// In some races, ISA-thread ptr was already released.
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// This is harmless, so we no-op.
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//
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::ReleaseInterfaceForThread\n"
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"\t Cached ISA-thread ptr already released\n"
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"\t m_dwThreadIdISA(%d)\n"
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"\t Current thread id(%d)\n"
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"\t m_pIWamReqSmartISA(%d)\n"
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, this
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, m_dwThreadIdISA
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, GetCurrentThreadId()
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, m_pIWamReqSmartISA
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));
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return NOERROR;
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}
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DBG_ASSERT( AssertSmartISAValid() );
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if ( m_dwThreadIdISA != GetCurrentThreadId() ) {
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//
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// If thread id's don't match, we can't release
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//
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::ReleaseInterfaceForThread\n"
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"\t Wrong thread error\n"
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"\t m_dwThreadIdISA(%d)\n"
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"\t Current thread id(%d)\n"
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"\t m_pIWamReqSmartISA(%d)\n"
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, this
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, m_dwThreadIdISA
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, GetCurrentThreadId()
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, m_pIWamReqSmartISA
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));
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//
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// Aha! If COM can return this, so can we ...
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//
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return RPC_E_WRONG_THREAD;
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}
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m_pIWamReqSmartISA->Release();
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m_pIWamReqSmartISA = NULL;
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m_dwThreadIdISA = 0;
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return NOERROR;
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}
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::GetIWamRequest
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Returns a thread-valid IWamRequest ptr.
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Arguments:
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ppIWamRequest - returned ptr
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Returns:
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HRESULT
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*/
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HRESULT
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WAM_EXEC_BASE::GetIWamRequest(
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IWamRequest ** ppIWamRequest
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)
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{
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HRESULT hrRet = NOERROR;
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IF_DEBUG( WAM_IWAMREQ_REFS ) {
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//
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// NOTE when WAM_IWAMREQ_REFS flag is set, we use
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// m_dwSignature as a ref count for gip get/release
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// (rather than add another debug-only member)
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//
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m_dwSignature++;
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
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" %d -> %d"
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"\n"
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, this
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, m_dwSignature - 1
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, m_dwSignature
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));
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}
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if ( m_fInProcess ) {
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//
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// In-Proc: simply return our cached W3-thread ptr
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//
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DBG_ASSERT( AssertInpValid() );
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*ppIWamRequest = m_pIWamReqInproc;
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IF_DEBUG( WAM_REFCOUNTS ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
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"\tIn-proc m_pIWamReqInproc(%08x)"
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"\n"
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, this
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, m_pIWamReqInproc
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));
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}
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} else {
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//
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// Out-of-Proc:
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// If we are dealing with a 'smart ISA', use ISA-thread ptr
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//
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// Else if we are on 'IIS thread', use 'IIS ptr'
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//
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// Else, get a ptr from gip-master
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//
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//
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DBG_ASSERT( AssertOopValid() );
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if ( m_pIWamReqSmartISA ) {
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//
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// FAST
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//
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// 'Smart ISA' ==> use ISA-thread ptr
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//
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DBG_ASSERT( AssertSmartISAValid() );
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*ppIWamRequest = m_pIWamReqSmartISA;
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IF_DEBUG( WAM_REFCOUNTS ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
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"\tOut-of-proc optimized - smart ISA: "
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"m_pIWamReqSmartISA(%08x)"
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"\n"
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, this
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, m_pIWamReqSmartISA
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));
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}
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} else if ( GetCurrentThreadId() == m_dwThreadIdIIS ) {
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//
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// FAST
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//
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// We are on 'IIS thread' ==> use 'IIS ptr'
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// NOTE we addref it as a precaution
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//
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*ppIWamRequest = m_pIWamReqIIS;
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m_pIWamReqIIS->AddRef();
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IF_DEBUG( WAM_REFCOUNTS ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
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"\tOut-of-proc optimized - IIS thread: "
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"m_pIWamReqIIS(%08x)"
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"\n"
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, this
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, m_pIWamReqIIS
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));
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}
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} else {
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//
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// SLOW :-(
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//
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// ISA is not smart and we are not on IIS thread
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// ==> must get a ptr from gip
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//
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hrRet = GetInterfaceFromGip( ppIWamRequest );
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IF_DEBUG( WAM_REFCOUNTS ) {
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
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"\tOut-of-proc NOT optimized: *ppIWamRequest(%08x)"
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"\n"
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, this
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, *ppIWamRequest
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));
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}
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}
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} // ( m_fInProcess )
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return hrRet;
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} // WAM_EXEC_BASE::GetIWamRequest
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|
|
|
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/*---------------------------------------------------------------------*
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WAM_EXEC_BASE::ReleaseIWamRequest
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Releases an IWamRequest ptr, covering whether in-proc or out-proc.
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Arguments:
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pIWamRequest - ptr to release
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Returns:
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Nothing
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*/
|
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VOID
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WAM_EXEC_BASE::ReleaseIWamRequest(
|
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IWamRequest * pIWamRequest
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)
|
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{
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|
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IF_DEBUG( WAM_IWAMREQ_REFS ) {
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|
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//
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// NOTE when WAM_IWAMREQ_REFS flag is set, we use
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// m_dwSignature as a ref count for gip get/release
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// (rather than add another debug-only member)
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//
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m_dwSignature--;
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DBGPRINTF((
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DBG_CONTEXT
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, "WAM_EXEC_BASE(%08x)::ReleaseIWamRequest"
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" %d -> %d"
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"\n"
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, this
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, m_dwSignature + 1
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, m_dwSignature
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));
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}
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if ( m_fInProcess ) {
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|
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DBG_ASSERT( AssertInpValid() );
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|
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//
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// In-Proc: no-op
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//
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return;
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}
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if ( m_pIWamReqSmartISA && (pIWamRequest == m_pIWamReqSmartISA) ) {
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DBG_ASSERT( AssertSmartISAValid() );
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//
|
|
// 'Smart ISA': no-op
|
|
//
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
//
|
|
// Out-Proc: release ptr
|
|
//
|
|
// NOTE the ptr is either our cached 'IIS ptr' (if we are on
|
|
// mainline thread) or the one we got from gip-master
|
|
// (if we are on another thread).
|
|
//
|
|
// Either way, we simply release it.
|
|
//
|
|
|
|
DBG_ASSERT( AssertOopValid() );
|
|
|
|
IF_DEBUG( WAM_REFCOUNTS ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::ReleaseIWamRequest ptr %08x\n"
|
|
, this
|
|
, pIWamRequest
|
|
));
|
|
}
|
|
|
|
pIWamRequest->Release();
|
|
return;
|
|
|
|
} // WAM_EXEC_BASE::ReleaseIWamRequest
|
|
|
|
|
|
|
|
/*---------------------------------------------------------------------*
|
|
WAM_EXEC_BASE::GetInterfaceFromGip
|
|
|
|
|
|
*/
|
|
HRESULT
|
|
WAM_EXEC_BASE::GetInterfaceFromGip(
|
|
IWamRequest ** ppIWamRequest
|
|
)
|
|
{
|
|
|
|
HRESULT hrRet = NOERROR;
|
|
|
|
|
|
if ( m_gipIWamRequest == 0 ) {
|
|
|
|
//
|
|
// In low-memory, etc cases we may not have a gip cookie
|
|
// (see bug 86872)
|
|
//
|
|
// We quote verbatim from raid:
|
|
//
|
|
/*
|
|
this was the bug:
|
|
- the call from WAM::ProcessRequest to InitWamExecInfo fails due to oom when
|
|
calling GetCoreState (probably due to the allocation in the COM marshaler)
|
|
- thus, _gipIWamRequest remains 0
|
|
- we jump to failure code in WAM::ProcessRequest and call WAM_EXEC_INFO::
|
|
PrepCleanupAndRelease
|
|
- PrepCleanupAndRelease assert-failed because _gipIWamRequest == 0
|
|
- after the asertion fialure we crash trying to call PrepCleanupWamRequest on
|
|
a null ptr
|
|
|
|
this is the fix:
|
|
- in WAM_EXEC_INFO::PrepCleanupAndRelease we no longer assert, and now
|
|
proactively avoid the cross-process call if _gipIWamRequest == 0
|
|
|
|
additional robust-ification, related to the fix:
|
|
- added fail-fast code to GetIWamRequest for the case _gipIWamRequest == 0 (
|
|
replaces the assert stanley saw, above)
|
|
- many more DBGPRINTFs in InitWamExecInfo and elsewhere
|
|
*/
|
|
|
|
hrRet = E_FAIL;
|
|
|
|
} else {
|
|
|
|
DBG_ASSERT( AssertOopValid() );
|
|
|
|
IF_DEBUG( WAM_THREADID ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetInterfaceFromGip before gip.Get"
|
|
"m_dwThreadIdISA(%d)"
|
|
"\n"
|
|
, this
|
|
, m_dwThreadIdISA
|
|
));
|
|
|
|
}
|
|
|
|
|
|
//
|
|
// Get a thread-valid ptr from gip-master
|
|
//
|
|
|
|
hrRet = g_GIPAPI.Get(
|
|
m_gipIWamRequest
|
|
, IID_IWamRequest
|
|
, (void **) ppIWamRequest
|
|
);
|
|
|
|
|
|
IF_DEBUG( WAM_THREADID ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetInterfaceFromGip after gip.Get "
|
|
"m_dwThreadIdISA(%d)"
|
|
"\n"
|
|
, this
|
|
, m_dwThreadIdISA
|
|
));
|
|
|
|
if ( m_dwThreadIdISA == 0 ) {
|
|
|
|
m_dwThreadIdISA = GetCurrentThreadId();
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetInterfaceFromGip "
|
|
"after hokey debug refresh "
|
|
"m_dwThreadIdISA(%d)"
|
|
"\n"
|
|
, this
|
|
, m_dwThreadIdISA
|
|
));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
IF_DEBUG( WAM_THREADID ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetInterfaceFromGip after CoUninitialize "
|
|
"m_dwThreadIdISA(%d)"
|
|
"\n"
|
|
, this
|
|
, m_dwThreadIdISA
|
|
));
|
|
}
|
|
|
|
|
|
IF_DEBUG( WAM_REFCOUNTS ) {
|
|
if ( hrRet == NOERROR ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetIWamRequest"
|
|
"gets ptr %08x"
|
|
"\n"
|
|
, this
|
|
, *ppIWamRequest
|
|
));
|
|
|
|
} else {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::GetIWamRequest failed "
|
|
"hrRet(%08x) "
|
|
"\n"
|
|
, this
|
|
, hrRet
|
|
));
|
|
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
return hrRet;
|
|
|
|
}
|
|
|
|
|
|
|
|
BOOL
|
|
WAM_EXEC_BASE::AssertSmartISAValid()
|
|
{
|
|
|
|
IF_DEBUG( WAM_THREADID ) {
|
|
|
|
DBGPRINTF((
|
|
DBG_CONTEXT
|
|
, "WAM_EXEC_BASE(%08x)::AssertSmartISAValid"
|
|
"\n\t"
|
|
"m_fInProcess(%d) "
|
|
"m_pIWamReqInproc(%d) "
|
|
"m_gipIWamRequest(%d) "
|
|
"m_pIWamReqSmartISA(%d) "
|
|
"\n\t"
|
|
"m_dwThreadIdISA(%d) "
|
|
"Current thread id(%d) "
|
|
"\n"
|
|
, this
|
|
, m_fInProcess
|
|
, m_pIWamReqInproc
|
|
, m_gipIWamRequest
|
|
, m_pIWamReqSmartISA
|
|
, m_dwThreadIdISA
|
|
, GetCurrentThreadId()
|
|
));
|
|
|
|
}
|
|
|
|
return(
|
|
AssertOopValid()
|
|
&& m_pIWamReqSmartISA
|
|
&& m_dwThreadIdISA
|
|
);
|
|
}
|
|
|
|
|
|
|
|
/************************ End of File *********************************/
|