//----------------------------------------------------------------------------
//
// Generic interface-style extension support.
//
// Copyright (C) Microsoft Corporation, 2000.
//
//----------------------------------------------------------------------------

#ifndef __EXT_H__
#define __EXT_H__

#include <dbgeng.h>

#ifdef __cplusplus
extern "C" {
#endif
    
// Safe release and NULL.
#define EXT_RELEASE(Unk) \
    ((Unk) != NULL ? ((Unk)->Release(), (Unk) = NULL) : NULL)

HRESULT ExtQuery(PDEBUG_CLIENT Client);
void ExtRelease(void);
    
// Global variables initialized by ExtQuery.
extern PDEBUG_ADVANCED       g_ExtAdvanced;
extern PDEBUG_CLIENT         g_ExtClient;
extern PDEBUG_CONTROL        g_ExtControl;
extern PDEBUG_DATA_SPACES    g_ExtData;
extern PDEBUG_REGISTERS      g_ExtRegisters;
extern PDEBUG_SYMBOLS        g_ExtSymbols;
extern PDEBUG_SYSTEM_OBJECTS g_ExtSystem;

// Version 2 interfaces may be NULL.
extern PDEBUG_DATA_SPACES2   g_ExtData2;

extern HANDLE g_hCurrentProcess;
extern HANDLE g_hCurrentThread;
    
// Windbg-style extension interfaces queried at Initialize time.
extern WINDBG_EXTENSION_APIS   ExtensionApis;
extern WINDBG_EXTENSION_APIS32 ExtensionApis32;
extern WINDBG_EXTENSION_APIS64 ExtensionApis64;

typedef BOOL
(CALLBACK *PENUMERATE_UMODE_THREADS_CALLBACK)(
     ULONG ThreadUserId,
     PVOID UserContext
     );

ULONG GetCurrentThreadUserID(void);

BOOL
EnumerateUModeThreads(
    PENUMERATE_UMODE_THREADS_CALLBACK Callback,
    PVOID UserContext
    );

#ifdef __cplusplus
}
#endif

#endif // #ifndef __EXT_H__