dlls/comcat/manager.c

   1 /*
   2  *      ComCatMgr IUnknown implementation for comcat.dll
   3  *
   4  * Copyright (C) 2002 John K. Hohm
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "comcat_private.h"
  22
  23 #include "wine/debug.h"
  24
  25 WINE_DEFAULT_DEBUG_CHANNEL(ole);
  26
  27 static ULONG WINAPI COMCAT_IUnknown_AddRef(LPUNKNOWN iface);
  28
  29 /**********************************************************************
  30  * COMCAT_IUnknown_QueryInterface
  31  */
  32 static HRESULT WINAPI COMCAT_IUnknown_QueryInterface(
  33     LPUNKNOWN iface,
  34     REFIID riid,
  35     LPVOID *ppvObj)
  36 {
  37     ICOM_THIS_MULTI(ComCatMgrImpl, unkVtbl, iface);
  38     TRACE("\n\tIID:\t%s\n",debugstr_guid(riid));
  39
  40     if (This == NULL || ppvObj == NULL) return E_POINTER;
  41
  42     if (IsEqualGUID(riid, &IID_IUnknown)) {
  43         *ppvObj = &This->unkVtbl;
  44         COMCAT_IUnknown_AddRef(iface);
  45         return S_OK;
  46     }
  47
  48     if (IsEqualGUID(riid, &IID_ICatRegister)) {
  49         *ppvObj = &This->regVtbl;
  50         COMCAT_IUnknown_AddRef(iface);
  51         return S_OK;
  52     }
  53
  54     if (IsEqualGUID(riid, &IID_ICatInformation)) {
  55         *ppvObj = &This->infVtbl;
  56         COMCAT_IUnknown_AddRef(iface);
  57         return S_OK;
  58     }
  59
  60     return E_NOINTERFACE;
  61 }
  62
  63 /**********************************************************************
  64  * COMCAT_IUnknown_AddRef
  65  */
  66 static ULONG WINAPI COMCAT_IUnknown_AddRef(LPUNKNOWN iface)
  67 {
  68     ICOM_THIS_MULTI(ComCatMgrImpl, unkVtbl, iface);
  69     ULONG ref;
  70
  71     TRACE("\n");
  72
  73     if (This == NULL) return E_POINTER;
  74
  75     ref = InterlockedIncrement(&This->ref);
  76     if (ref == 1) {
  77         InterlockedIncrement(&dll_ref);
  78     }
  79     return ref;
  80 }
  81
  82 /**********************************************************************
  83  * COMCAT_IUnknown_Release
  84  */
  85 static ULONG WINAPI COMCAT_IUnknown_Release(LPUNKNOWN iface)
  86 {
  87     ICOM_THIS_MULTI(ComCatMgrImpl, unkVtbl, iface);
  88     ULONG ref;
  89
  90     TRACE("\n");
  91
  92     if (This == NULL) return E_POINTER;
  93
  94     ref = InterlockedDecrement(&This->ref);
  95     if (ref == 0) {
  96         InterlockedDecrement(&dll_ref);
  97     }
  98     return ref;
  99 }
 100
 101 /**********************************************************************
 102  * COMCAT_IUnknown_Vtbl
 103  */
 104 static const IUnknownVtbl COMCAT_IUnknown_Vtbl =
 105 {
 106     COMCAT_IUnknown_QueryInterface,
 107     COMCAT_IUnknown_AddRef,
 108     COMCAT_IUnknown_Release
 109 };
 110
 111 /**********************************************************************
 112  * static ComCatMgr instance
 113  */
 114 ComCatMgrImpl COMCAT_ComCatMgr =
 115 {
 116     &COMCAT_IUnknown_Vtbl,
 117     &COMCAT_ICatRegister_Vtbl,
 118     &COMCAT_ICatInformation_Vtbl,
 119     0
 120 };