fxautostring.hpp

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/*++
 
Copyright (c) Microsoft Corporation
 
Module Name:
 
    FxAutoString.hpp
 
Abstract:
 
    This is the C++ header for FxAutoString which represents a UNICODE_STRING
    and follows the RAII (resource acquisiion is initialization) pattern where
    it frees the buffer when the struct goes out of scope.
 
Author:
 
 
 
Revision History:
 
 
 
--*/
 
#ifndef _FXAUTOSTRING_H_
#define _FXAUTOSTRING_H_
 
struct FxAutoString {
    FxAutoString(
        VOID
        )
    {
        RtlZeroMemory(&m_UnicodeString, sizeof(m_UnicodeString));
    }
 
    ~FxAutoString(
        VOID
        )
    {
        if (m_UnicodeString.Buffer != NULL) {
#if _WDFLDR_
            ExFreePool(m_UnicodeString.Buffer);
#else
            FxPoolFree(m_UnicodeString.Buffer);
#endif
            RtlZeroMemory(&m_UnicodeString, sizeof(m_UnicodeString));
        }
    }
 
    UNICODE_STRING m_UnicodeString;
};
 
#endif // _FXAUTOSTRING_H_