reactos/include/win32k/userobj.h

   1 /* $Id: userobj.h,v 1.2 2003/05/18 17:22:31 ea Exp $
   2  *
   3  * COPYRIGHT:        See COPYING in the top level directory
   4  * PROJECT:          ReactOS kernel
   5  * PURPOSE:          USER Object manager interface definition
   6  * FILE:             include/win32k/userobj.h
   7  * PROGRAMER:        Rex Jolliff (rex@lvcablemodem.com)
   8  *
   9  */
  10
  11 #ifndef  __WIN32K_USEROBJ_H
  12 #define  __WIN32K_USEROBJ_H
  13
  14 #include <ddk/ntddk.h>
  15
  16 #define  UO_CLASS_MAGIC     0x5141
  17 #define  UO_WINDOW_MAGIC    0x5142
  18 #define  UO_MAGIC_DONTCARE  0xffff
  19
  20 #define USER_OBJECT_TAG (ULONG)(('W'<<0) + ('3'<<8) + ('2'<<16) + ('U'<<24))
  21
  22 typedef struct tag_USER_OBJECT_HEADER
  23 {
  24   WORD  magic;
  25   DWORD  referenceCount;
  26   LIST_ENTRY  listEntry;
  27   FAST_MUTEX  mutex;
  28 } USER_OBJECT_HEADER, *PUSER_OBJECT_HEADER;
  29
  30 typedef  PVOID  PUSER_OBJECT;
  31 typedef  HANDLE  HUSEROBJ;
  32
  33 #define  UserObjectHeaderToBody(header) ((PUSER_OBJECT)(((PCHAR)header)+sizeof(USER_OBJECT_HEADER)))
  34 #define  UserObjectBodyToHeader(body) ((PUSER_OBJECT_HEADER)(((PCHAR)body)-sizeof(USER_OBJECT_HEADER)))
  35 #define  UserObjectHeaderToHandle(header) ((HUSEROBJ)header)
  36 #define  UserObjectHandleToHeader(handle) ((HUSEROBJ)handle)
  37
  38 PUSER_OBJECT FASTCALL USEROBJ_AllocObject (WORD  size, WORD  magic);
  39 BOOL         FASTCALL USEROBJ_FreeObject (PUSER_OBJECT  object, WORD  magic);
  40 HUSEROBJ     FASTCALL USEROBJ_PtrToHandle (PUSER_OBJECT  object, WORD  magic);
  41 PUSER_OBJECT FASTCALL USEROBJ_HandleToPtr (HUSEROBJ  object, WORD  magic);
  42 BOOL         FASTCALL USEROBJ_LockObject (HUSEROBJ Obj);
  43 BOOL         FASTCALL USEROBJ_UnlockObject (HUSEROBJ Obj);
  44
  45 #endif
  46