windows-nt/Source/XPSP1/NT/shell/ext/shtl/cshalloc.h

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2020-09-26 03:20:57 -05:00
//+-------------------------------------------------------------------------
//
// File: shalloc.h
//
// Contents: CSHAlloc
//
// Purpose: A wrapper class for the shell's task allocator. Loads the
// shell's allocator on first contstruction, and if that fails,
// subsequent uses of this allocator will fail as appropriate.
//
//--------------------------------------------------------------------------
#ifndef __SHALLOC_H__
#define __SHALLOC_H__
#include <shlobj.h>
class CSHAlloc : public IMalloc
{
IMalloc * m_pMalloc;
DWORD m_cRefs;
public:
CSHAlloc(BOOL bInitOle = TRUE);
~CSHAlloc();
// IUnknown methods
STDMETHOD(QueryInterface) (THIS_ REFIID riid, void * * ppvObj);
STDMETHOD_(ULONG, AddRef) (THIS_);
STDMETHOD_(ULONG, Release) (THIS_);
// IMalloc methods
STDMETHOD_(void *, Alloc) (THIS_ SIZE_T cb);
STDMETHOD_(void, Free) (THIS_ void * pv);
STDMETHOD_(void *, Realloc) (THIS_ void * pv, SIZE_T cb);
STDMETHOD_(SIZE_T, GetSize) (THIS_ void * pv);
STDMETHOD_(int, DidAlloc) (THIS_ void * pv);
STDMETHOD_(void, HeapMinimize)(THIS_);
};
// App must declare a global instance of this class
extern CSHAlloc g_SHAlloc;
#endif // __SHALLOC_H__