Bug Summary

File:home/maarten/src/libreoffice/core/toolkit/source/awt/vclxcontainer.cxx
Warning:line 207, column 17
Use of memory after it is freed

Annotated Source Code

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clang -cc1 -cc1 -triple x86_64-unknown-linux-gnu -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name vclxcontainer.cxx -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 2 -mframe-pointer=all -fmath-errno -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -fno-split-dwarf-inlining -debugger-tuning=gdb -resource-dir /usr/lib64/clang/11.0.0 -D BOOST_ERROR_CODE_HEADER_ONLY -D BOOST_SYSTEM_NO_DEPRECATED -D CPPU_ENV=gcc3 -D LINUX -D OSL_DEBUG_LEVEL=1 -D SAL_LOG_INFO -D SAL_LOG_WARN -D UNIX -D UNX -D X86_64 -D _PTHREADS -D _REENTRANT -D TOOLKIT_DLLIMPLEMENTATION -D SVT_DLL_NAME="libsvtlo.so" -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/epoxy/include -I /home/maarten/src/libreoffice/core/external/boost/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/boost -I /home/maarten/src/libreoffice/core/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include -I /usr/lib/jvm/java-11-openjdk-11.0.9.10-0.0.ea.fc33.x86_64/include/linux -I /home/maarten/src/libreoffice/core/config_host -I /home/maarten/src/libreoffice/core/toolkit/inc -I /home/maarten/src/libreoffice/core/toolkit/source -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/udkapi/normal -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/offapi/normal -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10 -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/x86_64-redhat-linux -internal-isystem /usr/bin/../lib/gcc/x86_64-redhat-linux/10/../../../../include/c++/10/backward -internal-isystem /usr/local/include -internal-isystem /usr/lib64/clang/11.0.0/include -internal-externc-isystem /include -internal-externc-isystem /usr/include -O0 -Wno-missing-braces -std=c++17 -fdeprecated-macro -fdebug-compilation-dir /home/maarten/src/libreoffice/core -ferror-limit 19 -fvisibility hidden -fvisibility-inlines-hidden -stack-protector 2 -fgnuc-version=4.2.1 -fcxx-exceptions -fexceptions -debug-info-kind=constructor -analyzer-output=html -faddrsig -o /home/maarten/tmp/wis/scan-build-libreoffice/output/report/2020-10-07-141433-9725-1 -x c++ /home/maarten/src/libreoffice/core/toolkit/source/awt/vclxcontainer.cxx

/home/maarten/src/libreoffice/core/toolkit/source/awt/vclxcontainer.cxx

→
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#include <toolkit/awt/vclxcontainer.hxx>
21#include <toolkit/helper/macros.hxx>
22#include <toolkit/helper/vclunohelper.hxx>
23#include <cppuhelper/typeprovider.hxx>
24#include <cppuhelper/queryinterface.hxx>
25#include <comphelper/interfacecontainer2.hxx>
26
27#include <vcl/svapp.hxx>
28#include <vcl/window.hxx>
29#include <tools/debug.hxx>
30#include <helper/scrollabledialog.hxx>
31#include <toolkit/helper/property.hxx>
32
33
34
35
36void VCLXContainer::ImplGetPropertyIds( std::vector< sal_uInt16 > &rIds )
37{
38 VCLXWindow::ImplGetPropertyIds( rIds );
39}
40
41VCLXContainer::VCLXContainer()
42{
43}
44
45VCLXContainer::~VCLXContainer()
46{
47}
48
49// css::uno::XInterface
50css::uno::Any VCLXContainer::queryInterface( const css::uno::Type & rType )
51{
52 css::uno::Any aRet = ::cppu::queryInterface( rType,
53 static_cast< css::awt::XVclContainer* >(this),
54 static_cast< css::awt::XVclContainerPeer* >(this) );
55 return (aRet.hasValue() ? aRet : VCLXWindow::queryInterface( rType ));
56}
57
58IMPL_IMPLEMENTATION_ID( VCLXContainer )css::uno::Sequence< sal_Int8 > VCLXContainer::getImplementationId
() { return css::uno::Sequence<sal_Int8>(); }
59
60// css::lang::XTypeProvider
61css::uno::Sequence< css::uno::Type > VCLXContainer::getTypes()
62{
63 static const ::cppu::OTypeCollection aTypeList(
64 cppu::UnoType<css::lang::XTypeProvider>::get(),
65 cppu::UnoType<css::awt::XVclContainer>::get(),
66 cppu::UnoType<css::awt::XVclContainerPeer>::get(),
67 VCLXWindow::getTypes()
68 );
69 return aTypeList.getTypes();
70}
71
72
73// css::awt::XVclContainer
74void VCLXContainer::addVclContainerListener( const css::uno::Reference< css::awt::XVclContainerListener >& rxListener )
75{
76 SolarMutexGuard aGuard;
77
78 GetContainerListeners().addInterface( rxListener );
79}
80
81void VCLXContainer::removeVclContainerListener( const css::uno::Reference< css::awt::XVclContainerListener >& rxListener )
82{
83 SolarMutexGuard aGuard;
84
85 GetContainerListeners().removeInterface( rxListener );
86}
87
88css::uno::Sequence< css::uno::Reference< css::awt::XWindow > > VCLXContainer::getWindows( )
89{
90 SolarMutexGuard aGuard;
91
92 // Request container interface from all children
93 css::uno::Sequence< css::uno::Reference< css::awt::XWindow > > aSeq;
94 VclPtr<vcl::Window> pWindow = GetWindow();
95 if ( pWindow )
96 {
97 sal_uInt16 nChildren = pWindow->GetChildCount();
98 if ( nChildren )
99 {
100 aSeq = css::uno::Sequence< css::uno::Reference< css::awt::XWindow > >( nChildren );
101 css::uno::Reference< css::awt::XWindow > * pChildRefs = aSeq.getArray();
102 for ( sal_uInt16 n = 0; n < nChildren; n++ )
103 {
104 vcl::Window* pChild = pWindow->GetChild( n );
105 css::uno::Reference< css::awt::XWindowPeer > xWP = pChild->GetComponentInterface();
106 css::uno::Reference< css::awt::XWindow > xW( xWP, css::uno::UNO_QUERY );
107 pChildRefs[n] = xW;
108 }
109 }
110 }
111 return aSeq;
112}
113
114
115// css::awt::XVclContainerPeer
116void VCLXContainer::enableDialogControl( sal_Bool bEnable )
117{
118 SolarMutexGuard aGuard;
119
120 VclPtr<vcl::Window> pWindow = GetWindow();
121 if ( pWindow )
122 {
123 WinBits nStyle = pWindow->GetStyle();
124 if ( bEnable )
125 nStyle |= WB_DIALOGCONTROL;
126 else
127 nStyle &= (~WB_DIALOGCONTROL);
128 pWindow->SetStyle( nStyle );
129 }
130}
131
132void VCLXContainer::setTabOrder( const css::uno::Sequence< css::uno::Reference< css::awt::XWindow > >& Components, const css::uno::Sequence< css::uno::Any >& Tabs, sal_Bool bGroupControl )
133{
134 SolarMutexGuard aGuard;
135
136 sal_uInt32 nCount = Components.getLength();
137 DBG_ASSERT( nCount == static_cast<sal_uInt32>(Tabs.getLength()), "setTabOrder: TabCount != ComponentCount" )do { if (true && (!(nCount == static_cast<sal_uInt32
>(Tabs.getLength())))) { sal_detail_logFormat((SAL_DETAIL_LOG_LEVEL_WARN
), ("legacy.tools"), ("/home/maarten/src/libreoffice/core/toolkit/source/awt/vclxcontainer.cxx"
":" "137" ": "), "%s", "setTabOrder: TabCount != ComponentCount"
); } } while (false);
138 const css::uno::Reference< css::awt::XWindow > * pComps = Components.getConstArray();
139 const css::uno::Any* pTabs = Tabs.getConstArray();
140
141 vcl::Window* pPrevWin = nullptr;
142 for ( sal_uInt32 n = 0; n < nCount; n++ )
143 {
144 // css::style::TabStop
145 VclPtr<vcl::Window> pWin = VCLUnoHelper::GetWindow( pComps[n] );
146 // May be NULL if a css::uno::Sequence is originated from TabController and is missing a peer!
147 if ( pWin )
148 {
149 // Order windows before manipulating their style, because elements such as the
150 // RadioButton considers the PREV-window in StateChanged.
151 if ( pPrevWin )
152 pWin->SetZOrder( pPrevWin, ZOrderFlags::Behind );
153
154 WinBits nStyle = pWin->GetStyle();
155 nStyle &= ~(WB_TABSTOP|WB_NOTABSTOP|WB_GROUP);
156 if ( pTabs[n].getValueType().getTypeClass() == css::uno::TypeClass_BOOLEAN )
157 {
158 bool bTab = false;
159 pTabs[n] >>= bTab;
160 nStyle |= ( bTab ? WB_TABSTOP : WB_NOTABSTOP );
161 }
162 pWin->SetStyle( nStyle );
163
164 if ( bGroupControl )
165 {
166 if ( n == 0 )
167 pWin->SetDialogControlStart( true );
168 else
169 pWin->SetDialogControlStart( false );
170 }
171
172 pPrevWin = pWin;
173 }
174 }
175}
176
177void VCLXContainer::setGroup( const css::uno::Sequence< css::uno::Reference< css::awt::XWindow > >& Components )
178{
179 SolarMutexGuard aGuard;
180
181 sal_uInt32 nCount = Components.getLength();
182 const css::uno::Reference< css::awt::XWindow > * pComps = Components.getConstArray();
183
184 vcl::Window* pPrevWin = nullptr;
185 vcl::Window* pPrevRadio = nullptr;
186 for ( sal_uInt32 n = 0; n
20.1
'n' is < 'nCount'
20.1
'n' is < 'nCount'
20.1
'n' is < 'nCount'
 < nCount; n++ )
1
Assuming 'n' is < 'nCount'
→
2
←
Loop condition is true. Entering loop body
→
21
←
Loop condition is true. Entering loop body
→
187 {
188 VclPtr<vcl::Window> pWin = VCLUnoHelper::GetWindow( pComps[n] );
189 if ( pWin )
3
←
Taking true branch
→
22
←
Taking true branch
→
190 {
191 vcl::Window* pSortBehind = pPrevWin;
192 // #57096# Sort all radios consecutively
193 bool bNewPrevWin = true;
194 if ( pWin->GetType() == WindowType::RADIOBUTTON )
4
←
Assuming the condition is false
→
5
←
Taking false branch
→
23
←
Assuming the condition is false
→
24
←
Taking false branch
→
195 {
196 if ( pPrevRadio )
197 {
198 // This RadioButton was sorted before PrevWin
199 bNewPrevWin = ( pPrevWin == pPrevRadio );
200 pSortBehind = pPrevRadio;
201 }
202 pPrevRadio = pWin;
203 }
204
205 // Z-Order
206 if ( pSortBehind
5.1
'pSortBehind' is null
24.1
'pSortBehind' is non-null
5.1
'pSortBehind' is null
24.1
'pSortBehind' is non-null
5.1
'pSortBehind' is null
24.1
'pSortBehind' is non-null
 )
6
←
Taking false branch
→
25
←
Taking true branch
→
207 pWin->SetZOrder( pSortBehind, ZOrderFlags::Behind );
26
←
Use of memory after it is freed
208
209 WinBits nStyle = pWin->GetStyle();
210 if ( n
6.1
'n' is equal to 0
6.1
'n' is equal to 0
6.1
'n' is equal to 0
 == 0 )
7
←
Taking true branch
→
211 nStyle |= WB_GROUP;
212 else
213 nStyle &= (~WB_GROUP);
214 pWin->SetStyle( nStyle );
215
216 // Add WB_GROUP after the last group
217 if ( n == ( nCount - 1 ) )
8
←
Assuming the condition is false
→
9
←
Taking false branch
→
218 {
219 vcl::Window* pBehindLast = pWin->GetWindow( GetWindowType::Next );
220 if ( pBehindLast )
221 {
222 WinBits nLastStyle = pBehindLast->GetStyle();
223 nLastStyle |= WB_GROUP;
224 pBehindLast->SetStyle( nLastStyle );
225 }
226 }
227
228 if ( bNewPrevWin
9.1
'bNewPrevWin' is true
9.1
'bNewPrevWin' is true
9.1
'bNewPrevWin' is true
 )
10
←
Taking true branch
→
229 pPrevWin = pWin;
230 }
231 }
11
←
Calling implicit destructor for 'VclPtr<vcl::Window>'
→
12
←
Calling '~Reference'
→
19
←
Returning from '~Reference'
→
20
←
Returning from destructor for 'VclPtr<vcl::Window>'
→
232}
233
234void SAL_CALL VCLXContainer::setProperty(
235 const OUString& PropertyName,
236 const css::uno::Any& Value )
237{
238 SolarMutexGuard aGuard;
239
240 sal_uInt16 nPropType = GetPropertyId( PropertyName );
241 switch ( nPropType )
242 {
243 case BASEPROPERTY_SCROLLHEIGHT162:
244 case BASEPROPERTY_SCROLLWIDTH161:
245 case BASEPROPERTY_SCROLLTOP163:
246 case BASEPROPERTY_SCROLLLEFT164:
247 {
248 sal_Int32 nVal =0;
249 Value >>= nVal;
250 Size aSize( nVal, nVal );
251 VclPtr<vcl::Window> pWindow = GetWindow();
252 MapMode aMode( MapUnit::MapAppFont );
253 toolkit::ScrollableDialog* pScrollable = dynamic_cast< toolkit::ScrollableDialog* >( pWindow.get() );
254 if ( pWindow && pScrollable )
255 {
256 OutputDevice* pDev = VCLUnoHelper::GetOutputDevice( getGraphics() );
257 if ( !pDev )
258 pDev = pWindow->GetParent();
259 // shouldn't happen but it appears pDev can be NULL
260 // #FIXME ( find out how/why )
261 if ( !pDev )
262 break;
263
264 aSize = pDev->LogicToPixel( aSize, aMode );
265 switch ( nPropType )
266 {
267 case BASEPROPERTY_SCROLLHEIGHT162:
268 pScrollable->SetScrollHeight( aSize.Height() );
269 break;
270 case BASEPROPERTY_SCROLLWIDTH161:
271 pScrollable->SetScrollWidth( aSize.Width() );
272 break;
273 case BASEPROPERTY_SCROLLTOP163:
274 pScrollable->SetScrollTop( aSize.Height() );
275 break;
276 case BASEPROPERTY_SCROLLLEFT164:
277 pScrollable->SetScrollLeft( aSize.Width() );
278 break;
279 default:
280 break;
281 }
282 break;
283 }
284 break;
285 }
286
287 default:
288 {
289 VCLXWindow::setProperty( PropertyName, Value );
290 }
291 }
292}
293/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/rtl/ref.hxx

→
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 INCLUDED_RTL_REF_HXX
21#define INCLUDED_RTL_REF_HXX
22
23#include "sal/config.h"
24
25#include <cassert>
26#include <cstddef>
27#include <functional>
28#ifdef LIBO_INTERNAL_ONLY1
29#include <type_traits>
30#endif
31
32#include "sal/types.h"
33
34namespace rtl
35{
36
37/** Template reference class for reference type.
38*/
39template <class reference_type>
40class Reference
41{
42 /** The <b>reference_type</b> body pointer.
43 */
44 reference_type * m_pBody;
45
46
47public:
48 /** Constructor...
49 */
50 Reference()
51 : m_pBody (NULL__null)
52 {}
53
54
55 /** Constructor...
56 */
57 Reference (reference_type * pBody, __sal_NoAcquire)
58 : m_pBody (pBody)
59 {
60 }
61
62 /** Constructor...
63 */
64 Reference (reference_type * pBody)
65 : m_pBody (pBody)
66 {
67 if (m_pBody)
68 m_pBody->acquire();
69 }
70
71 /** Copy constructor...
72 */
73 Reference (const Reference<reference_type> & handle)
74 : m_pBody (handle.m_pBody)
75 {
76 if (m_pBody)
77 m_pBody->acquire();
78 }
79
80#ifdef LIBO_INTERNAL_ONLY1
81 /** Move constructor...
82 */
83 Reference (Reference<reference_type> && handle) noexcept
84 : m_pBody (handle.m_pBody)
85 {
86 handle.m_pBody = nullptr;
87 }
88#endif
89
90#if defined LIBO_INTERNAL_ONLY1
91 /** Up-casting conversion constructor: Copies interface reference.
92
93 Does not work for up-casts to ambiguous bases.
94
95 @param rRef another reference
96 */
97 template< class derived_type >
98 inline Reference(
99 const Reference< derived_type > & rRef,
100 std::enable_if_t<std::is_base_of_v<reference_type, derived_type>, int> = 0 )
101 : m_pBody (rRef.get())
102 {
103 if (m_pBody)
104 m_pBody->acquire();
105 }
106#endif
107
108 /** Destructor...
109 */
110 ~Reference() COVERITY_NOEXCEPT_FALSE
111 {
112 if (m_pBody
12.1
Field 'm_pBody' is non-null
12.1
Field 'm_pBody' is non-null
12.1
Field 'm_pBody' is non-null
)
13
←
Taking true branch
→
113 m_pBody->release();
14
←
Calling 'VclReferenceBase::release'
→
18
←
Returning; memory was released
→
114 }
115
116 /** Set...
117 Similar to assignment.
118 */
119 Reference<reference_type> &
120 SAL_CALL set (reference_type * pBody)
121 {
122 if (pBody)
123 pBody->acquire();
124 reference_type * const pOld = m_pBody;
125 m_pBody = pBody;
126 if (pOld)
127 pOld->release();
128 return *this;
129 }
130
131 /** Assignment.
132 Unbinds this instance from its body (if bound) and
133 bind it to the body represented by the handle.
134 */
135 Reference<reference_type> &
136 SAL_CALL operator= (const Reference<reference_type> & handle)
137 {
138 return set( handle.m_pBody );
139 }
140
141#ifdef LIBO_INTERNAL_ONLY1
142 /** Assignment.
143 * Unbinds this instance from its body (if bound),
144 * bind it to the body represented by the handle, and
145 * set the body represented by the handle to nullptr.
146 */
147 Reference<reference_type> &
148 operator= (Reference<reference_type> && handle)
149 {
150 // self-movement guts ourself
151 if (m_pBody)
152 m_pBody->release();
153 m_pBody = handle.m_pBody;
154 handle.m_pBody = nullptr;
155 return *this;
156 }
157#endif
158
159 /** Assignment...
160 */
161 Reference<reference_type> &
162 SAL_CALL operator= (reference_type * pBody)
163 {
164 return set( pBody );
165 }
166
167 /** Unbind the body from this handle.
168 Note that for a handle representing a large body,
169 "handle.clear().set(new body());" _might_
170 perform a little bit better than "handle.set(new body());",
171 since in the second case two large objects exist in memory
172 (the old body and the new body).
173 */
174 Reference<reference_type> & SAL_CALL clear()
175 {
176 if (m_pBody)
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
181 }
182 return *this;
183 }
184
185
186 /** Get the body. Can be used instead of operator->().
187 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
188 are the same.
189 */
190 reference_type * SAL_CALL get() const
191 {
192 return m_pBody;
193 }
194
195
196 /** Probably most common used: handle->someBodyOp().
197 */
198 reference_type * SAL_CALL operator->() const
199 {
200 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 200, __extension__ __PRETTY_FUNCTION__));
201 return m_pBody;
202 }
203
204
205 /** Allows (*handle).someBodyOp().
206 */
207 reference_type & SAL_CALL operator*() const
208 {
209 assert(m_pBody != NULL)(static_cast <bool> (m_pBody != __null) ? void (0) : __assert_fail
("m_pBody != NULL", "/home/maarten/src/libreoffice/core/include/rtl/ref.hxx"
, 209, __extension__ __PRETTY_FUNCTION__));
210 return *m_pBody;
211 }
212
213
214 /** Returns True if the handle does point to a valid body.
215 */
216 bool SAL_CALL is() const
217 {
218 return (m_pBody != NULL__null);
219 }
220
221#if defined LIBO_INTERNAL_ONLY1
222 /** Returns True if the handle does point to a valid body.
223 */
224 explicit operator bool() const
225 {
226 return is();
227 }
228#endif
229
230 /** Returns True if this points to pBody.
231 */
232 bool SAL_CALL operator== (const reference_type * pBody) const
233 {
234 return (m_pBody == pBody);
235 }
236
237
238 /** Returns True if handle points to the same body.
239 */
240 bool
241 SAL_CALL operator== (const Reference<reference_type> & handle) const
242 {
243 return (m_pBody == handle.m_pBody);
244 }
245
246
247 /** Needed to place References into STL collection.
248 */
249 bool
250 SAL_CALL operator!= (const Reference<reference_type> & handle) const
251 {
252 return (m_pBody != handle.m_pBody);
253 }
254
255
256 /** Needed to place References into STL collection.
257 */
258 bool
259 SAL_CALL operator< (const Reference<reference_type> & handle) const
260 {
261 return (m_pBody < handle.m_pBody);
262 }
263
264
265 /** Needed to place References into STL collection.
266 */
267 bool
268 SAL_CALL operator> (const Reference<reference_type> & handle) const
269 {
270 return (m_pBody > handle.m_pBody);
271 }
272};
273
274} // namespace rtl
275
276#if defined LIBO_INTERNAL_ONLY1
277namespace std
278{
279
280/// @cond INTERNAL
281/**
282 Make rtl::Reference hashable by default for use in STL containers.
283
284 @since LibreOffice 6.3
285*/
286template<typename T>
287struct hash<::rtl::Reference<T>>
288{
289 std::size_t operator()(::rtl::Reference<T> const & s) const
290 { return std::size_t(s.get()); }
291};
292/// @endcond
293
294}
295
296#endif
297
298#endif /* ! INCLUDED_RTL_REF_HXX */
299
300/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
←

/home/maarten/src/libreoffice/core/include/vcl/vclreferencebase.hxx

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#ifndef INCLUDED_VCL_Reference_HXX
20#define INCLUDED_VCL_Reference_HXX
21
22#include <vcl/dllapi.h>
23#include <osl/interlck.h>
24
25class VCL_DLLPUBLIC__attribute__ ((visibility("default"))) VclReferenceBase
26{
27 mutable oslInterlockedCount mnRefCnt;
28
29 template<typename T> friend class VclPtr;
30
31public:
32 void acquire() const
33 {
34 osl_atomic_increment(&mnRefCnt)__sync_add_and_fetch((&mnRefCnt), 1);
35 }
36
37 void release() const
38 {
39 if (osl_atomic_decrement(&mnRefCnt)__sync_sub_and_fetch((&mnRefCnt), 1) == 0)
15
←
Assuming the condition is true
→
16
←
Taking true branch
→
40 delete this;
17
←
Memory is released
→
41 }
42#ifdef DBG_UTIL
43#ifndef _WIN32
44 sal_Int32 getRefCount() const { return mnRefCnt; }
45#endif
46#endif
47
48
49private:
50 VclReferenceBase(const VclReferenceBase&) = delete;
51 VclReferenceBase& operator=(const VclReferenceBase&) = delete;
52
53 bool mbDisposed : 1;
54
55protected:
56 VclReferenceBase();
57protected:
58 virtual ~VclReferenceBase();
59
60protected:
61 virtual void dispose();
62
63public:
64 void disposeOnce();
65 bool isDisposed() const { return mbDisposed; }
66
67};
68#endif