dlls/rsaenh/handle.h

   1 /*
   2  * dlls/rsaenh/handle.h
   3  * Support code to manage HANDLE tables.
   4  *
   5  * Copyright 1998 Alexandre Julliard
   6  * Copyright 2002-2004 Mike McCormack for CodeWeavers
   7  * Copyright 2004 Michael Jung
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  */
  23
  24 #ifndef __WINE_HANDLE_H
  25 #define __WINE_HANDLE_H
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  30
  31 #define TABLE_SIZE_INCREMENT 32
  32
  33 struct tagOBJECTHDR;
  34 typedef struct tagOBJECTHDR OBJECTHDR;
  35 typedef void (*DESTRUCTOR)(OBJECTHDR *object);
  36 struct tagOBJECTHDR
  37 {
  38     DWORD       dwType;
  39     UINT        refcount;
  40     DESTRUCTOR  destructor;
  41 };
  42
  43 typedef struct tagHANDLETABLEENTRY
  44 {
  45     OBJECTHDR    *pObject;
  46     unsigned int iNextFree;
  47 } HANDLETABLEENTRY;
  48
  49 typedef struct tagHANDLETABLE
  50 {
  51     unsigned int     iEntries;
  52     unsigned int     iFirstFree;
  53     HANDLETABLEENTRY *paEntries;
  54     CRITICAL_SECTION mutex;
  55 } HANDLETABLE;
  56
  57 int  alloc_handle_table  (HANDLETABLE **lplpTable);
  58 void init_handle_table   (HANDLETABLE *lpTable);
  59 void release_all_handles (HANDLETABLE *lpTable);
  60 int  release_handle_table(HANDLETABLE *lpTable);
  61 void destroy_handle_table(HANDLETABLE *lpTable);
  62 int  alloc_handle        (HANDLETABLE *lpTable, OBJECTHDR *lpObject, unsigned int *lpHandle);
  63 int  release_handle      (HANDLETABLE *lpTable, unsigned int handle, DWORD dwType);
  64 int  copy_handle         (HANDLETABLE *lpTable, unsigned int handle, DWORD dwType, unsigned int *copy);
  65 int  lookup_handle       (HANDLETABLE *lpTable, unsigned int handle, DWORD dwType, OBJECTHDR **lplpObject);
  66 int  is_valid_handle     (HANDLETABLE *lpTable, unsigned int handle, DWORD dwType);
  67
  68 unsigned int new_object   (HANDLETABLE *lpTable, size_t cbSize, DWORD dwType, DESTRUCTOR destructor,
  69                            OBJECTHDR **ppObject);
  70
  71 #ifdef __cplusplus
  72 }
  73 #endif
  74
  75 #endif /* __WINE_HANDLE_H */