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simplereferenceobject.hxx
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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 _SALHELPER_SIMPLEREFERENCEOBJECT_HXX_
21 #define _SALHELPER_SIMPLEREFERENCEOBJECT_HXX_
22
23 #include "osl/interlck.h"
24 #include "sal/types.h"
25 #include "salhelperdllapi.h"
26
27 #include <cstddef>
28 #include <new>
29
30 namespace salhelper {
31
58 class SALHELPER_DLLPUBLIC SimpleReferenceObject
59 {
60 public:
61 inline SimpleReferenceObject() SAL_THROW(()): m_nCount(0) {}
62
69 inline void acquire() SAL_THROW(())
70 { osl_atomic_increment(&m_nCount); }
71
72 inline void release() SAL_THROW(())
73 { if (osl_atomic_decrement(&m_nCount) == 0) delete this; }
74
77 static void * operator new(std::size_t nSize) SAL_THROW((std::bad_alloc));
78
81 static void * operator new(std::size_t nSize,
82 std::nothrow_t const & rNothrow)
83 SAL_THROW(());
84
87 static void operator delete(void * pPtr) SAL_THROW(());
88
91 static void operator delete(void * pPtr, std::nothrow_t const & rNothrow)
92 SAL_THROW(());
93
94 protected:
95 virtual ~SimpleReferenceObject() SAL_THROW(());
96
97 private:
98 oslInterlockedCount m_nCount;
99
102 SALHELPER_DLLPRIVATE SimpleReferenceObject(SimpleReferenceObject &);
103
106 SALHELPER_DLLPRIVATE void operator =(SimpleReferenceObject);
107
109
110 #ifdef _MSC_VER
111 /* We can't now have these private with MSVC2008 at least, it leads to
112 compilation errors in xmloff and other places.
113 */
114 protected:
115 #endif
116
118 static void * operator new[](std::size_t);
119
122 static void operator delete[](void * pPtr);
123
125 };
126
127 }
128
129 #endif // _SALHELPER_SIMPLEREFERENCEOBJECT_HXX_
130
131 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
SALHELPER_DLLPRIVATE
#define SALHELPER_DLLPRIVATE
Definition: salhelperdllapi.h:30
SAL_THROW
#define SAL_THROW(exc)
Definition of function throw clause macros.
Definition: types.h:356
interlck.h
oslInterlockedCount
sal_Int32 oslInterlockedCount
Definition: interlck.h:32
salhelper::SimpleReferenceObject::SimpleReferenceObject
SimpleReferenceObject()
Definition: simplereferenceobject.hxx:61
salhelper::SimpleReferenceObject::acquire
void acquire()
Definition: simplereferenceobject.hxx:69
SALHELPER_DLLPUBLIC
#define SALHELPER_DLLPUBLIC
Definition: salhelperdllapi.h:28
salhelperdllapi.h
salhelper::SimpleReferenceObject
A simple base implementation for reference-counted objects.
Definition: simplereferenceobject.hxx:58
salhelper::SimpleReferenceObject::release
void release()
Definition: simplereferenceobject.hxx:72
types.h