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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #ifndef CONNECTIVITY_FIREBIRD_SUBCOMPONENT_HXX
21 : #define CONNECTIVITY_FIREBIRD_SUBCOMPONENT_HXX
22 :
23 : #include <cppuhelper/interfacecontainer.h>
24 : #include <cppuhelper/propshlp.hxx>
25 : #include <cppuhelper/weak.hxx>
26 : #include <osl/diagnose.h>
27 : #include <osl/mutex.hxx>
28 :
29 : #include <com/sun/star/lang/DisposedException.hpp>
30 :
31 : namespace cppu {
32 : class IPropertyArrayHelper;
33 : }
34 :
35 : namespace com
36 : {
37 : namespace sun
38 : {
39 : namespace star
40 : {
41 : namespace lang
42 : {
43 : class XComponent;
44 : }
45 : }
46 : }
47 : }
48 : namespace connectivity
49 : {
50 :
51 : namespace firebird
52 : {
53 : void release(oslInterlockedCount& _refCount,
54 : ::cppu::OBroadcastHelper& rBHelper,
55 : ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& _xInterface,
56 : ::com::sun::star::lang::XComponent* _pObject);
57 :
58 : void checkDisposed(sal_Bool _bThrow) throw ( ::com::sun::star::lang::DisposedException );
59 :
60 :
61 : template <class TYPE>
62 : class OPropertyArrayUsageHelper
63 : {
64 : protected:
65 : static sal_Int32 s_nRefCount;
66 : static ::cppu::IPropertyArrayHelper* s_pProps;
67 : static ::osl::Mutex s_aMutex;
68 :
69 : public:
70 : OPropertyArrayUsageHelper();
71 11 : virtual ~OPropertyArrayUsageHelper()
72 : { // ARGHHHHHHH ..... would like to implement this in proparrhlp_impl.hxx (as we do with all other methods)
73 : // but SUNPRO 5 compiler (linker) doesn't like this
74 11 : ::osl::MutexGuard aGuard(s_aMutex);
75 : OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
76 11 : if (!--s_nRefCount)
77 : {
78 5 : delete s_pProps;
79 5 : s_pProps = NULL;
80 11 : }
81 22 : }
82 :
83 : /** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
84 : class, which is created if necessary.
85 : */
86 : ::cppu::IPropertyArrayHelper* getArrayHelper();
87 :
88 : protected:
89 : /** used to implement the creation of the array helper which is shared amongst all instances of the class.
90 : This method needs to be implemented in derived classes.
91 : <BR>
92 : The method gets called with s_aMutex acquired.
93 : <BR>
94 : as long as IPropertyArrayHelper has no virtual destructor, the implementation of ~OPropertyArrayUsageHelper
95 : assumes that you created an ::cppu::OPropertyArrayHelper when deleting s_pProps.
96 : @return an pointer to the newly created array helper. Must not be NULL.
97 : */
98 : virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const = 0;
99 : };
100 :
101 : template<class TYPE>
102 : sal_Int32 OPropertyArrayUsageHelper< TYPE >::s_nRefCount = 0;
103 :
104 : template<class TYPE>
105 : ::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper< TYPE >::s_pProps = NULL;
106 :
107 : template<class TYPE>
108 2 : ::osl::Mutex OPropertyArrayUsageHelper< TYPE >::s_aMutex;
109 :
110 :
111 : template <class TYPE>
112 11 : OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
113 : {
114 11 : ::osl::MutexGuard aGuard(s_aMutex);
115 11 : ++s_nRefCount;
116 11 : }
117 :
118 :
119 : template <class TYPE>
120 2 : ::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
121 : {
122 : OSL_ENSURE(s_nRefCount, "OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
123 2 : if (!s_pProps)
124 : {
125 1 : ::osl::MutexGuard aGuard(s_aMutex);
126 1 : if (!s_pProps)
127 : {
128 1 : s_pProps = createArrayHelper();
129 : OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
130 1 : }
131 : }
132 2 : return s_pProps;
133 : }
134 :
135 : class OBase_Mutex
136 : {
137 : public:
138 : ::osl::Mutex m_aMutex;
139 : };
140 :
141 :
142 :
143 :
144 : }
145 : }
146 : #endif // CONNECTIVITY_FIREBIRD_SUBCOMPONENT_HXX
147 :
148 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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