793 lines
20 KiB
C++
793 lines
20 KiB
C++
//
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// Copyright 2001 - Microsoft Corporation
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//
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// Created By:
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// Geoff Pease (GPease) 23-JAN-2001
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//
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// Maintained By:
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// Geoff Pease (GPease) 23-JAN-2001
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//
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// Notes:
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// Define NO_TRACE_INTERFACES to disable interface tracking in DEBUG
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// builds.
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//
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// Define TRACE_INTERFACES_ENABLED to enable interface tracking in RETAIL
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// builds.
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//
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// Define FULL_TRACE_INTERFACES_ENABLED to enable full interface
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// tracking in RETAIL builds. Full interface tracking is enabled if
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// interface tracking is enabled and building for X86.
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// Full interface tracking is X86 specific for now. It can be adapted for
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// other platforms as required. Since today, most of our developement is
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// done on the X86 platform, there is not a need to do this (yet).
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//
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#include "pch.h"
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#if defined( TRACE_INTERFACES_ENABLED )
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///////////////////////////////////////
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//
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// BEGIN TRACE_INTERFACES_ENABLED
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//
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#if defined( DEBUG )
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//
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// Description:
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// Uses the Interface Tracking Table (g_itTable) to lookup a human
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// readable name for the riidIn. If no matching interface is found. it
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// will use the pszBufOut to format a GUID string and return it.
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//
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//
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// Return Values:
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// Never NULL. It will always a valid string pointer to either the
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// interface name or to pszBufOut.
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//
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// Notes:
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// pszBufOut must be at least cchGUID_STRING_SIZE in size.
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//
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LPCTSTR
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PszDebugFindInterface(
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REFIID riidIn, // The interface ID to lookup.
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LPTSTR pszBufOut // Buffer to use if interface not found to format GUID.
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)
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{
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if ( IsTraceFlagSet( mtfQUERYINTERFACE ) )
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{
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int idx;
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for ( idx = 0; g_itTable[ idx ].riid != NULL; idx++ )
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{
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if ( riidIn == *g_itTable[ idx ].riid )
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{
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return g_itTable[ idx ].pszName;
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}
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}
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wnsprintf( pszBufOut,
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cchGUID_STRING_SIZE,
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TEXT("{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}"),
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riidIn.Data1,
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riidIn.Data2,
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riidIn.Data3,
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riidIn.Data4[0],
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riidIn.Data4[1],
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riidIn.Data4[2],
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riidIn.Data4[3],
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riidIn.Data4[4],
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riidIn.Data4[5],
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riidIn.Data4[6],
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riidIn.Data4[7]
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);
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}
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else
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{
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return TEXT("riid");
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}
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return pszBufOut;
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}
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#endif // DEBUG
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//
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// END TRACE_INTERFACES_ENABLED
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//
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///////////////////////////////////////
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#endif // TRACE_INTERFACES_ENABLED
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// ************************************************************************
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#if defined( FULL_TRACE_INTERFACES_ENABLED )
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///////////////////////////////////////
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//
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// BEGIN FULL_TRACE_INTERFACES_ENABLED
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//
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//
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// Globals
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//
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static IDeadObjTracker * g_pidoTracker = NULL; // dead object - there is only one.
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#ifndef NOISY_TRACE_INTERFACES
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///////////////////////////////////////
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//
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// DEBUG !NOISY_TRACE_INTERFACES
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//
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//
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// Undefining these macros to make the CITracker quiet.
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//
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#undef TraceFunc
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#define TraceFunc 1 ? (void)0 : (void)
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#undef TraceFunc1
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#define TraceFunc1 1 ? (void)0 : (void)
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#undef TraceFunc2
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#define TraceFunc2 1 ? (void)0 : (void)
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#undef TraceFunc3
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#define TraceFunc3 1 ? (void)0 : (void)
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#undef TraceFunc4
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#define TraceFunc4 1 ? (void)0 : (void)
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#undef TraceFunc5
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#define TraceFunc5 1 ? (void)0 : (void)
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#undef TraceFunc6
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#define TraceFunc6 1 ? (void)0 : (void)
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#undef TraceQIFunc
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#define TraceQIFunc 1 ? (void)0 : (void)
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#undef TraceFuncExit
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#define TraceFuncExit()
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#undef FRETURN
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#define FRETURN( _u )
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#undef HRETURN
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#define HRETURN(_hr) return(_hr)
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#undef RETURN
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#define RETURN(_fn) return(_fn)
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#undef RRETURN
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#define RRETURN( _fn ) return(_fn)
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//
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// END !NOISY_TRACE_INTERFACES
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//
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///////////////////////////////////////
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#endif // NOISY_TRACE_INTERFACES
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#if defined( DEBUG )
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//
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// These are internal to debug.cpp but not published in debug.h.
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//
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BOOL
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IsDebugFlagSet(
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TRACEFLAG tfIn
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);
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void
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DebugInitializeBuffer(
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LPCTSTR pszFileIn,
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const int nLineIn,
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LPCTSTR pszModuleIn,
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LPTSTR pszBufIn,
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INT * pcchInout,
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LPTSTR * ppszBufOut
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);
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#endif // DEBUG
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///////////////////////////////////////
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//
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// CITracker Definition
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//
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//
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DEFINE_THISCLASS("CITracker");
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#define THISCLASS CITracker
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#define LPTHISCLASS CITracker*
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// ************************************************************************
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//
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// Constructor / Destructor
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//
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// ************************************************************************
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//
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// Special new( ) for CITracker
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//
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// Description:
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// Creates an object the size of the object plus nExtraIn bytes. This
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// allows the Vtable that the CITracker object is tracking to be
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// appended to the end of the CITracker object.
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//
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#ifdef new
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#undef new
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#endif
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void*
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__cdecl
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operator new(
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unsigned int nSizeIn,
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LPCTSTR pszFileIn,
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const int nLineIn,
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LPCTSTR pszModuleIn,
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UINT nExtraIn,
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LPCTSTR pszNameIn
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)
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{
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void * pv = HeapAlloc( GetProcessHeap(), 0, nSizeIn + nExtraIn );
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return TraceMemoryAdd( mmbtOBJECT, pv, pszFileIn, nLineIn, pszModuleIn, nSizeIn + nExtraIn, TEXT("CITracker") );
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}
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//
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// Description:
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// Create an interface tracker for the given interface.
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//
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// Return Type:
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// On failure, this will be punkIn.
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// On success, pointer to an object that implements the interface to
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// be tracked.
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//
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LPUNKNOWN
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DebugTrackInterface(
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LPCTSTR pszFileIn, // Source filename
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const int nLineIn, // Source line number
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LPCTSTR pszModuleIn, // Source "module" name
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LPCTSTR pszNameIn, // Name to associate with object that the punk references.
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REFIID riidIn, // Interface IID of the interface to be tracked.
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LPUNKNOWN punkIn, // Interface pointer to track.
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LONG cRefIn // Initial ref count on the interface.
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)
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{
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TraceFunc3( "pszNameIn = '%s', riidIn, punkIn = 0x%08x, cRefIn = %u",
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pszNameIn,
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punkIn,
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cRefIn
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);
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UINT nEntry = 0;
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LPUNKNOWN punkOut = punkIn;
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//
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// Scan the table looking for the matching interface definition.
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//
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for( nEntry = 0; g_itTable[ nEntry ].riid != NULL; nEntry++ )
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{
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if ( riidIn == *g_itTable[ nEntry ].riid )
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{
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//
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// Figure out how much "extra" to allocate onto the CITracker.
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//
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UINT nExtra = ( 3 + g_itTable[ nEntry ].cFunctions ) * sizeof(LPVOID);
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//
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// Create a name for the tracker.
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//
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// TODO: gpease 19-NOV-1999
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// Maybe merge this in with the nExtra(??).
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//
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LPTSTR psz;
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LPTSTR pszName =
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(LPTSTR) HeapAlloc( GetProcessHeap(), 0,
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( lstrlen( g_itTable[ nEntry ].pszName ) + lstrlen( pszNameIn ) + 3 + 2 ) * sizeof(TCHAR) );
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psz = StrCpy( pszName, pszNameIn ); // object name
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psz = StrCat( psz, TEXT("::[") ); // + 3
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psz = StrCat( psz, g_itTable[ nEntry ].pszName ); // + interface name
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psz = StrCat( psz, TEXT("]") ); // + 2
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//
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// Create the tracker.
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//
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LPTHISCLASS pc = new( pszFileIn, nLineIn, pszModuleIn, nExtra, pszName ) THISCLASS( );
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if ( pc != NULL )
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{
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HRESULT hr;
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//
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// Initialize the tracker.
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//
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hr = THR( pc->Init( &punkOut, punkIn, &g_itTable[ nEntry ], pszName, cRefIn ) );
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if ( FAILED( hr ) )
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{
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//
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// If it failed, delete it.
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//
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delete pc;
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}
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}
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break; // exit loop
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}
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}
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AssertMsg( g_itTable[ nEntry ].riid != NULL, "There has been a request to track an interface that is not in the interface table." );
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RETURN( punkOut );
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}
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//
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//
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//
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CITracker::CITracker( void )
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{
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TraceFunc( "" );
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//
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// KB: gpease 10-OCT-1998
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// This class will leak objects to help catch bad components
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// that call back into released interfaces therefore this
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// DLL will not be able to be released.
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//
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if ( g_tfModule & mtfCITRACKERS )
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{
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//
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// Only count CITrackers if tracking is enabled.
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//
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InterlockedIncrement( &g_cObjects );
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}
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TraceFuncExit();
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}
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//
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// Description:
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// Initializes the CITracker object. It creates a copy of the VTable
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// of the interface to be tracked replacing the QI, AddRef and Release
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// methods with its own IUnknown. This allows CITracker to be "in the
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// loop" for those calls.
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//
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// Return Value:
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// S_OK
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// Success.
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//
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STDMETHODIMP
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CITracker::Init(
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LPUNKNOWN * ppunkOut, // The "punk" to be passed around.
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LPUNKNOWN punkIn, // The interface to be copied and tracked.
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const INTERFACE_TABLE_ENTRY * piteIn, // The interface table entry for the interface.
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LPCTSTR pszNameIn, // The name to be given to this CITracker.
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LONG cRefIn // TRUE is the CITracker should start with a Ref Count of 1.
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)
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{
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HRESULT hr = S_OK;
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TraceFunc5( "ppunkOut = 0x%08x, punkIn = 0x%08x, iteIn = %s, pszNameIn = '%s', cRefIn = %u",
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ppunkOut,
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punkIn,
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piteIn->pszName,
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pszNameIn,
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cRefIn
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);
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//
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// Generate new Vtbls for each interface
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//
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LPVOID * pthisVtbl = (LPVOID*) (IUnknownTracker *) this;
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LPVOID * ppthatVtbl = (LPVOID*) punkIn;
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DWORD dwSize = ( 3 + piteIn->cFunctions ) * sizeof(LPVOID);
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AssertMsg( dwSize < 30 * sizeof(LPVOID), "Need to make Dead Obj and IUnknownTracker larger!" );
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//
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// Interface tracking information initialization
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//
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m_vtbl.cRef = cRefIn;
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m_vtbl.pszInterface = pszNameIn;
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m_vtbl.dwSize = dwSize;
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//
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// Copy our IUnknownTracker vtbl to our "fix-up-able" vtbl
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//
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CopyMemory( &m_vtbl.lpfnQueryInterface, *pthisVtbl, dwSize );
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//
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// Remember the "punk" pointer so we can pass it back in when
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// we jump to the orginal objects IUnknown functions.
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//
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m_vtbl.punk = (LPUNKNOWN) punkIn;
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//
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// And finally, point the objects vtbl for this interface to
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// our newly created vtbl.
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//
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m_vtbl.pNewVtbl = (VTBL *) &m_vtbl.lpfnQueryInterface;
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*pthisVtbl = m_vtbl.pNewVtbl;
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*ppunkOut = (LPUNKNOWN) (IUnknownTracker *) this;
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TraceMsg( mtfCITRACKERS, L"TRACK: Tracking %s Interface (%#x)", m_vtbl.pszInterface, punkIn );
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HRETURN( hr );
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}
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//
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//
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//
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CITracker::~CITracker( void )
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{
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TraceFunc1( "for %s", m_vtbl.pszInterface );
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if ( m_vtbl.pszInterface != NULL )
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{
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HeapFree( GetProcessHeap(), 0, (LPVOID) m_vtbl.pszInterface );
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}
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if ( g_tfModule & mtfCITRACKERS )
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{
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//
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// Only count CITrackers if tracking is enabled.
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//
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InterlockedDecrement( &g_cObjects );
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}
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TraceFuncExit();
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}
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// ************************************************************************
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//
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// IUnknownTracker
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//
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// ************************************************************************
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//
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//
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//
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STDMETHODIMP
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CITracker::QueryInterface(
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REFIID riid,
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LPVOID * ppv
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)
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{
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TraceFunc1( "{%s}", m_vtbl.pszInterface );
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TraceMsg( mtfCITRACKERS, "TRACK: + %s::QueryInterface( )", m_vtbl.pszInterface );
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//
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// Call the punk's QueryInterface( ).
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//
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HRESULT hr = m_vtbl.punk->QueryInterface( riid, ppv );
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//
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// KB: TRACK_ALL_QIED_INTERFACES gpease 25-NOV-1999
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// Thinking out loud, should we track all interfaces QI'ed from
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// a tracked interface auto-magically? If so, turn this #define
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// on.
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//
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// #define TRACK_ALL_QIED_INTERFACES
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#if defined( TRACK_ALL_QIED_INTERFACES )
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if ( !IsEqualIID( riid, IID_IUnknown )
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)
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{
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*ppv = DebugTrackInterface( TEXT("<Unknown>"),
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0,
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__MODULE__,
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m_vtbl.pszInterface,
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riid,
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(IUnknown*) *ppv,
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TRUE
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);
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} // if: not the IUnknown
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#endif
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TraceMsg( mtfCITRACKERS,
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"TRACK: V %s::QueryInterface( ) [ *ppv = %#x ]",
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m_vtbl.pszInterface,
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*ppv
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);
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HRETURN( hr );
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}
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//
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//
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//
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STDMETHODIMP_( ULONG )
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CITracker::AddRef( void )
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{
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TraceFunc1( "{%s}", m_vtbl.pszInterface );
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TraceMsg( mtfCITRACKERS, "TRACK: + %s AddRef( ) [ CITracker = %#08x ]", m_vtbl.pszInterface, this );
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//
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// Call the punk's AddRef( ).
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//
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ULONG ul = m_vtbl.punk->AddRef( );
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//
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// Increment our counter.
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//
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ULONG ulvtbl = InterlockedIncrement( (LONG *) &m_vtbl.cRef );
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TraceMsg( mtfCITRACKERS,
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"TRACK: V %s AddRef( ) [ I = %u, O = %u, CITracker = %#08x ]",
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m_vtbl.pszInterface,
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ulvtbl,
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ul,
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this
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);
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AssertMsg( ul >= ulvtbl, "The objects ref should be higher than the interfaces." );
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RETURN( ul );
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}
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//
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//
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//
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STDMETHODIMP_( ULONG )
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CITracker::Release( void )
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{
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TraceFunc1( "{%s}", m_vtbl.pszInterface );
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TraceMsg( mtfCITRACKERS, "TRACK: + %s Release( ) [ CITracker = %#08x ]", m_vtbl.pszInterface, this );
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//
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// Call the punk's Release( ).
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//
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ULONG ul = m_vtbl.punk->Release( );
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//
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// Decrement our counter.
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//
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ULONG ulvtbl = InterlockedDecrement( (LONG *) &m_vtbl.cRef );
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TraceMsg( mtfCITRACKERS,
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"TRACK: V %s Release( ) [ I = %u, O = %u, CITracker = %#08x ]",
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m_vtbl.pszInterface,
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ulvtbl,
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ul,
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this
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);
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//
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// Our ref count should always be less than the punk's ref count.
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//
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AssertMsg( ul >= ulvtbl, "The objects ref should be higher than the interfaces." );
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if ( ulvtbl )
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{
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RETURN( ulvtbl );
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}
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|
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if ( g_pidoTracker == NULL )
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{
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//
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// Create a dead object - if more than one is created at a time, we might leak it.
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//
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// TODO: gpease 19-NOV-1999
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// Work on not leaking "extra" dead objects.
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//
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|
g_pidoTracker = new( TEXT(__FILE__), __LINE__, __MODULE__, 0, TEXT("Dead Object") ) IDeadObjTracker( );
|
|
|
|
// Don't track this object
|
|
TraceMemoryDelete( g_pidoTracker, FALSE );
|
|
|
|
}
|
|
|
|
Assert( g_pidoTracker != NULL );
|
|
if ( g_pidoTracker != NULL )
|
|
{
|
|
LPVOID * pthisVtbl = (LPVOID *) (IUnknownTracker *) this;
|
|
LPVOID * ppthatVtbl = (LPVOID *) (IDeadObjTracker *) g_pidoTracker;
|
|
|
|
// Copy the DeadObj vtbl.
|
|
CopyMemory( &m_vtbl.lpfnQueryInterface, *ppthatVtbl, m_vtbl.dwSize );
|
|
|
|
//
|
|
// Don't really delete it, but fake the debug output as if we did.
|
|
//
|
|
TraceFunc1( "for %s", m_vtbl.pszInterface );
|
|
TraceMsg( mtfCITRACKERS, "TRACK: # %s set to dead object [ punk = %#08x ]", m_vtbl.pszInterface, pthisVtbl );
|
|
FRETURN( 0 );
|
|
|
|
// Stop tracking this object.
|
|
TraceMemoryDelete( this, FALSE );
|
|
|
|
}
|
|
else
|
|
{
|
|
//
|
|
// No dead object; nuke ourselves. This will at least cause an AV if
|
|
// the program tries to call on our interface alerting the programmer
|
|
// that somethings wrong.
|
|
//
|
|
delete this;
|
|
|
|
}
|
|
|
|
RETURN(0);
|
|
|
|
}
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// IDeadObjTracker - The dead interface object tracker.
|
|
//
|
|
// This object is shunted into released interfaces that were being tracked by
|
|
// the CITracker class. Any calls to a released interface will end up causing
|
|
// an Assert and if execution continues it will return E_FAIL.
|
|
//
|
|
//****************************************************************************
|
|
|
|
|
|
//
|
|
//
|
|
//
|
|
#define IDeadObjTrackerStub( _iStubNum ) \
|
|
STDMETHODIMP \
|
|
IDeadObjTracker::Stub##_iStubNum( LPVOID* punk ) \
|
|
{ \
|
|
const int cchDebugMessageSize = 255; \
|
|
TCHAR szMessage[ cchDebugMessageSize ]; \
|
|
LRESULT lResult;\
|
|
\
|
|
DebugMsg( "*ERROR* %s: Entered %s (%#08x) after it was released. Returning E_FAIL.", \
|
|
__MODULE__, \
|
|
m_vtbl.pszInterface, \
|
|
this \
|
|
); \
|
|
\
|
|
wnsprintf( szMessage, \
|
|
cchDebugMessageSize, \
|
|
TEXT("Entered %s (%#08x) after it was released.\n\nDo you want to break here?\n\n(If you do not break, E_FAIL will be returned.)"), \
|
|
m_vtbl.pszInterface, \
|
|
this \
|
|
);\
|
|
\
|
|
lResult = MessageBox( NULL, szMessage, TEXT("Dead Interface"), MB_YESNO | MB_ICONWARNING );\
|
|
if ( lResult == IDYES \
|
|
) \
|
|
{ \
|
|
DEBUG_BREAK; \
|
|
} \
|
|
\
|
|
return E_FAIL; \
|
|
}
|
|
|
|
IDeadObjTrackerStub(0);
|
|
IDeadObjTrackerStub(1);
|
|
IDeadObjTrackerStub(2);
|
|
IDeadObjTrackerStub(3);
|
|
IDeadObjTrackerStub(4);
|
|
IDeadObjTrackerStub(5);
|
|
IDeadObjTrackerStub(6);
|
|
IDeadObjTrackerStub(7);
|
|
IDeadObjTrackerStub(8);
|
|
IDeadObjTrackerStub(9);
|
|
IDeadObjTrackerStub(10);
|
|
IDeadObjTrackerStub(11);
|
|
IDeadObjTrackerStub(12);
|
|
IDeadObjTrackerStub(13);
|
|
IDeadObjTrackerStub(14);
|
|
IDeadObjTrackerStub(15);
|
|
IDeadObjTrackerStub(16);
|
|
IDeadObjTrackerStub(17);
|
|
IDeadObjTrackerStub(18);
|
|
IDeadObjTrackerStub(19);
|
|
IDeadObjTrackerStub(20);
|
|
IDeadObjTrackerStub(21);
|
|
IDeadObjTrackerStub(22);
|
|
IDeadObjTrackerStub(23);
|
|
IDeadObjTrackerStub(24);
|
|
IDeadObjTrackerStub(25);
|
|
IDeadObjTrackerStub(26);
|
|
IDeadObjTrackerStub(27);
|
|
IDeadObjTrackerStub(28);
|
|
IDeadObjTrackerStub(29);
|
|
IDeadObjTrackerStub(30);
|
|
|
|
|
|
//****************************************************************************
|
|
//
|
|
// IUnknownTracker stub
|
|
//
|
|
// This merely directs the incoming call back to the orginal object. The
|
|
// IUnknown methods will be remapped the the CITracker methods.
|
|
//
|
|
//****************************************************************************
|
|
|
|
|
|
//
|
|
//
|
|
//
|
|
STDMETHODIMP
|
|
IUnknownTracker::QueryInterface(
|
|
REFIID riid,
|
|
LPVOID * ppv
|
|
)
|
|
{
|
|
ErrorMsg( "How did you get here?", 0 );
|
|
AssertMsg( 0, "You shouldn't be here!" );
|
|
return E_FAIL;
|
|
|
|
}
|
|
|
|
//
|
|
//
|
|
//
|
|
STDMETHODIMP_( ULONG )
|
|
IUnknownTracker::AddRef( void )
|
|
{
|
|
ErrorMsg( "How did you get here?", 0 );
|
|
AssertMsg( 0, "You shouldn't be here!" );
|
|
return -1;
|
|
|
|
}
|
|
|
|
//
|
|
//
|
|
//
|
|
STDMETHODIMP_( ULONG )
|
|
IUnknownTracker::Release( void )
|
|
{
|
|
ErrorMsg( "How did you get here?", 0 );
|
|
AssertMsg( 0, "You shouldn't be here!" );
|
|
return -1;
|
|
|
|
}
|
|
|
|
//
|
|
// These are just stubs to redirect the call to the "real" method on the punk.
|
|
// We actually dissappear from the call stack.
|
|
//
|
|
#define IUnknownTrackerStub( i ) \
|
|
void \
|
|
_declspec(naked) \
|
|
IUnknownTracker::Stub##i() \
|
|
{ \
|
|
_asm mov eax, ss:4[esp] \
|
|
_asm mov ecx, 8[eax] \
|
|
_asm mov eax, [ecx] \
|
|
_asm mov ss:4[esp], ecx \
|
|
_asm jmp dword ptr cs:(4*i)[eax] \
|
|
}
|
|
|
|
IUnknownTrackerStub(3);
|
|
IUnknownTrackerStub(4);
|
|
IUnknownTrackerStub(5);
|
|
IUnknownTrackerStub(6);
|
|
IUnknownTrackerStub(7);
|
|
IUnknownTrackerStub(8);
|
|
IUnknownTrackerStub(9);
|
|
IUnknownTrackerStub(10);
|
|
IUnknownTrackerStub(11);
|
|
IUnknownTrackerStub(12);
|
|
IUnknownTrackerStub(13);
|
|
IUnknownTrackerStub(14);
|
|
IUnknownTrackerStub(15);
|
|
IUnknownTrackerStub(16);
|
|
IUnknownTrackerStub(17);
|
|
IUnknownTrackerStub(18);
|
|
IUnknownTrackerStub(19);
|
|
IUnknownTrackerStub(20);
|
|
IUnknownTrackerStub(21);
|
|
IUnknownTrackerStub(22);
|
|
IUnknownTrackerStub(23);
|
|
IUnknownTrackerStub(24);
|
|
IUnknownTrackerStub(25);
|
|
IUnknownTrackerStub(26);
|
|
IUnknownTrackerStub(27);
|
|
IUnknownTrackerStub(28);
|
|
IUnknownTrackerStub(29);
|
|
IUnknownTrackerStub(30);
|
|
|
|
|
|
//
|
|
// END FULL_TRACE_INTERFACES_ENABLED
|
|
//
|
|
///////////////////////////////////////
|
|
#endif // FULL_TRACE_INTERFACES_ENABLED
|