Leaked source code of windows server 2003
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106 lines
2.6 KiB

// Copyright (c) 1997-1999 Microsoft Corporation
//
// core utility functions
//
// 30 Nov 1999 sburns
#ifndef COREUTIL_HPP_INCLUDED
#define COREUTIL_HPP_INCLUDED
#define BREAK_ON_FAILED_HRESULT(hr) \
if (FAILED(hr)) \
{ \
LOG_HRESULT(hr); \
break; \
}
#define BREAK_ON_FAILED_HRESULT2(hr,msg) \
if (FAILED(hr)) \
{ \
LOG(msg) \
LOG_HRESULT(hr); \
break; \
}
namespace Burnslib
{
// Loads various message dlls in an an attempt to resolve the HRESULT into
// an error message. Returns a "unknown error" string on failure.
String
GetErrorMessage(HRESULT hr);
// Returns the HINSTANCE of the DLL designated to contain all resources.
//
// This function requires that the first module loaded (whether it be a DLL or
// EXE) set the global variable hResourceModuleHandle to the HINSTANCE of the
// module (DLL or EXE) that contains all of the program's binary resources.
// This should be done as early as possible in the module's startup code.
HINSTANCE
GetResourceModuleHandle();
// a safe version of HRESULT_FROM_WIN32 that doesn't repeatedly evaluate
// it's arguement. The problem with using the macro directly is that the
// argument -- the win32 error to convert -- will be evaluated more than
// once. So, if you use an expression as the argument, at best you get
// an inefficiency, at worst you get unexpected side effects.
inline
HRESULT
Win32ToHresult(DWORD win32Error)
{
ASSERT(win32Error < 0xFFFF);
// If win32Error is really an HRESULT, then this will preserve that
// HRESULT, rather than whack off the error code part and change the
// facility code. See winerror.h
return HRESULT_FROM_WIN32(win32Error);
}
// unsigned version
inline
HRESULT
Win32ToHresult(LONG win32Error)
{
ASSERT(win32Error < 0xFFFF);
return HRESULT_FROM_WIN32(win32Error);
}
inline
HRESULT
NtStatusToHRESULT(NTSTATUS status)
{
return Win32ToHresult(::RtlNtStatusToDosError(status));
}
} // namespace Burnslib
#endif // COREUTIL_HPP_INCLUDED