Bug Summary

File:home/maarten/src/libreoffice/core/include/rtl/ref.hxx
Warning:line 192, column 9
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 SectionWindow.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 EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -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/reportdesign/inc -I /home/maarten/src/libreoffice/core/reportdesign/source/inc -I /home/maarten/src/libreoffice/core/reportdesign/source/ui/inc -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/reportdesign/source/ui/report/SectionWindow.cxx

/home/maarten/src/libreoffice/core/reportdesign/source/ui/report/SectionWindow.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#include <SectionWindow.hxx>
20#include <ReportWindow.hxx>
21#include <UITools.hxx>
22#include <ReportController.hxx>
23#include <ReportSection.hxx>
24#include <DesignView.hxx>
25#include <strings.hxx>
26#include <core_resource.hxx>
27#include <strings.hrc>
28#include <StartMarker.hxx>
29#include <EndMarker.hxx>
30#include <ViewsWindow.hxx>
31
32#include <functional>
33#include <algorithm>
34#include <vcl/svapp.hxx>
35#include <vcl/settings.hxx>
36
37namespace rptui
38{
39using namespace ::com::sun::star;
40using namespace ::comphelper;
41
42OSectionWindow::OSectionWindow( OViewsWindow* _pParent,const uno::Reference< report::XSection >& _xSection,const OUString& _sColorEntry)
43: Window( _pParent,WB_DIALOGCONTROL)
44,OPropertyChangeListener(m_aMutex)
45,m_pParent(_pParent)
46,m_aStartMarker( VclPtr<rptui::OStartMarker>::Create(this,_sColorEntry))
47,m_aReportSection( VclPtr<rptui::OReportSection>::Create(this,_xSection))
48,m_aSplitter(VclPtr<Splitter>::Create(this))
49,m_aEndMarker( VclPtr<rptui::OEndMarker>::Create(this,_sColorEntry))
50{
51 const MapMode& rMapMode = _pParent->GetMapMode();
52 SetMapMode( rMapMode );
53 ImplInitSettings();
54 // TRY
55 m_aSplitter->SetMapMode( MapMode( MapUnit::Map100thMM ) );
56 m_aSplitter->SetStartSplitHdl(LINK(this, OSectionWindow,StartSplitHdl)::tools::detail::makeLink( ::tools::detail::castTo<OSectionWindow
*>(this), &OSectionWindow::LinkStubStartSplitHdl)
);
57 m_aSplitter->SetSplitHdl(LINK(this, OSectionWindow,SplitHdl)::tools::detail::makeLink( ::tools::detail::castTo<OSectionWindow
*>(this), &OSectionWindow::LinkStubSplitHdl)
);
58 m_aSplitter->SetEndSplitHdl(LINK(this, OSectionWindow,EndSplitHdl)::tools::detail::makeLink( ::tools::detail::castTo<OSectionWindow
*>(this), &OSectionWindow::LinkStubEndSplitHdl)
);
59 m_aSplitter->SetBackground( Wallpaper( Application::GetSettings().GetStyleSettings().GetFaceColor() ));
60 m_aSplitter->SetSplitPosPixel(m_aSplitter->LogicToPixel(Size(0,_xSection->getHeight())).Height());
61
62
63 m_aStartMarker->setCollapsedHdl(LINK(this,OSectionWindow,Collapsed)::tools::detail::makeLink( ::tools::detail::castTo<OSectionWindow
*>(this), &OSectionWindow::LinkStubCollapsed)
);
64
65 m_aStartMarker->zoom(rMapMode.GetScaleX());
66 setZoomFactor(rMapMode.GetScaleX(), *m_aReportSection);
67 setZoomFactor(rMapMode.GetScaleX(), *m_aSplitter);
68 setZoomFactor(rMapMode.GetScaleX(), *m_aEndMarker);
69
70 m_aSplitter->Show();
71 m_aStartMarker->Show();
72 m_aReportSection->Show();
73 m_aEndMarker->Show();
74 Show();
75
76 m_pSectionMulti = new OPropertyChangeMultiplexer(this,_xSection.get());
77 m_pSectionMulti->addProperty(PROPERTY_NAME"Name");
78 m_pSectionMulti->addProperty(PROPERTY_HEIGHT"Height");
79
80 beans::PropertyChangeEvent aEvent;
81 aEvent.Source = _xSection;
82 aEvent.PropertyName = PROPERTY_NAME"Name";
83 uno::Reference< report::XGroup > xGroup(_xSection->getGroup());
84 if ( xGroup.is() )
85 {
86 m_pGroupMulti = new OPropertyChangeMultiplexer(this,xGroup.get());
87 m_pGroupMulti->addProperty(PROPERTY_EXPRESSION"Expression");
88 aEvent.Source = xGroup;
89 aEvent.PropertyName = PROPERTY_EXPRESSION"Expression";
90 }
91
92 _propertyChanged(aEvent);
93}
94
95OSectionWindow::~OSectionWindow()
96{
97 disposeOnce();
98}
99
100void OSectionWindow::dispose()
101{
102 try
103 {
104 if ( m_pSectionMulti.is() )
1
Taking false branch
105 m_pSectionMulti->dispose();
106 m_pSectionMulti.clear();
107 if ( m_pGroupMulti.is() )
2
Taking false branch
108 m_pGroupMulti->dispose();
109 m_pGroupMulti.clear();
110 }
111 catch (uno::Exception&)
112 {
113 }
114 m_aStartMarker.disposeAndClear();
115 m_aReportSection.disposeAndClear();
116 m_aSplitter.disposeAndClear();
117 m_aEndMarker.disposeAndClear();
3
Calling 'VclPtr::disposeAndClear'
118 m_pParent.clear();
119 vcl::Window::dispose();
120}
121
122void OSectionWindow::_propertyChanged(const beans::PropertyChangeEvent& _rEvent)
123{
124 SolarMutexGuard g;
125 const uno::Reference< report::XSection > xSection(_rEvent.Source,uno::UNO_QUERY);
126 if ( xSection.is() )
127 {
128 if ( _rEvent.PropertyName == PROPERTY_HEIGHT"Height" )
129 {
130 m_pParent->getView()->SetUpdateMode(false);
131 //Resize();
132 m_pParent->getView()->notifySizeChanged();
133 m_pParent->resize(*this);
134 m_pParent->getView()->SetUpdateMode(true);
135 // getViewsWindow()->getView()->getReportView()->getController().resetZoomType();
136 }
137 else if ( _rEvent.PropertyName == PROPERTY_NAME"Name" && !xSection->getGroup().is() )
138 {
139 uno::Reference< report::XReportDefinition > xReport = xSection->getReportDefinition();
140 if ( setReportSectionTitle(xReport,RID_STR_REPORT_HEADERreinterpret_cast<char const *>("RID_STR_REPORT_HEADER" "\004"
u8"Report Header")
,::std::mem_fn(&OReportHelper::getReportHeader),::std::mem_fn(&OReportHelper::getReportHeaderOn))
141 || setReportSectionTitle(xReport,RID_STR_REPORT_FOOTERreinterpret_cast<char const *>("RID_STR_REPORT_FOOTER" "\004"
u8"Report Footer")
,::std::mem_fn(&OReportHelper::getReportFooter),::std::mem_fn(&OReportHelper::getReportFooterOn))
142 || setReportSectionTitle(xReport,RID_STR_PAGE_HEADERreinterpret_cast<char const *>("RID_STR_PAGE_HEADER" "\004"
u8"Page Header")
,::std::mem_fn(&OReportHelper::getPageHeader),::std::mem_fn(&OReportHelper::getPageHeaderOn))
143 || setReportSectionTitle(xReport,RID_STR_PAGE_FOOTERreinterpret_cast<char const *>("RID_STR_PAGE_FOOTER" "\004"
u8"Page Footer")
,::std::mem_fn(&OReportHelper::getPageFooter),::std::mem_fn(&OReportHelper::getPageFooterOn)) )
144 {
145 m_aStartMarker->Invalidate(InvalidateFlags::NoErase);
146 }
147 else
148 {
149 OUString sTitle = RptResId(RID_STR_DETAILreinterpret_cast<char const *>("RID_STR_DETAIL" "\004" u8"Detail"
)
);
150 m_aStartMarker->setTitle(sTitle);
151 m_aStartMarker->Invalidate(InvalidateFlags::Children);
152 }
153 }
154 }
155 else if ( _rEvent.PropertyName == PROPERTY_EXPRESSION"Expression" )
156 {
157 uno::Reference< report::XGroup > xGroup(_rEvent.Source,uno::UNO_QUERY);
158 if ( xGroup.is() && !setGroupSectionTitle(xGroup,RID_STR_HEADERreinterpret_cast<char const *>("RID_STR_HEADER" "\004" u8"# Header"
)
,::std::mem_fn(&OGroupHelper::getHeader),::std::mem_fn(&OGroupHelper::getHeaderOn)))
159 {
160 setGroupSectionTitle(xGroup,RID_STR_FOOTERreinterpret_cast<char const *>("RID_STR_FOOTER" "\004" u8"# Footer"
)
,::std::mem_fn(&OGroupHelper::getFooter),::std::mem_fn(&OGroupHelper::getFooterOn));
161 }
162 }
163}
164
165bool OSectionWindow::setReportSectionTitle(
166 const uno::Reference<report::XReportDefinition>& _xReport, const char* pResId,
167 const ::std::function<uno::Reference<report::XSection>(OReportHelper*)>& _pGetSection,
168 const ::std::function<bool(OReportHelper*)>& _pIsSectionOn)
169{
170 OReportHelper aReportHelper(_xReport);
171 const bool bRet = _pIsSectionOn(&aReportHelper) && _pGetSection(&aReportHelper) == m_aReportSection->getSection();
172 if ( bRet )
173 {
174 OUString sTitle = RptResId(pResId);
175 m_aStartMarker->setTitle(sTitle);
176 m_aStartMarker->Invalidate(InvalidateFlags::Children);
177 }
178 return bRet;
179}
180
181bool OSectionWindow::setGroupSectionTitle(
182 const uno::Reference<report::XGroup>& _xGroup, const char* pResId,
183 const ::std::function<uno::Reference<report::XSection>(OGroupHelper*)>& _pGetSection,
184 const ::std::function<bool(OGroupHelper*)>& _pIsSectionOn)
185{
186 OGroupHelper aGroupHelper(_xGroup);
187 const bool bRet = _pIsSectionOn(&aGroupHelper) && _pGetSection(&aGroupHelper) == m_aReportSection->getSection() ;
188 if ( bRet )
189 {
190 OUString sExpression = _xGroup->getExpression();
191 OUString sLabel = getViewsWindow()->getView()->getReportView()->getController().getColumnLabel_throw(sExpression);
192 if ( !sLabel.isEmpty() )
193 {
194 sExpression = sLabel;
195 }
196
197 OUString sTitle(RptResId(pResId));
198 sTitle = sTitle.replaceFirst("#", sExpression);
199 m_aStartMarker->setTitle( sTitle );
200 m_aStartMarker->Invalidate(InvalidateFlags::Children);
201 }
202 return bRet;
203}
204
205void OSectionWindow::ImplInitSettings()
206{
207 EnableChildTransparentMode();
208 SetParentClipMode( ParentClipMode::NoClip );
209 SetPaintTransparent( true );
210 SetBackground( );
211}
212
213void OSectionWindow::DataChanged( const DataChangedEvent& rDCEvt )
214{
215 Window::DataChanged( rDCEvt );
216
217 if ( (rDCEvt.GetType() == DataChangedEventType::SETTINGS) &&
218 (rDCEvt.GetFlags() & AllSettingsFlags::STYLE) )
219 {
220 ImplInitSettings();
221 Invalidate();
222 }
223}
224
225void OSectionWindow::Resize()
226{
227 Window::Resize();
228
229 Size aOutputSize = GetOutputSizePixel();
230 long nEndWidth = long(REPORT_ENDMARKER_WIDTH10 * GetMapMode().GetScaleX());
231
232 const Point aThumbPos = m_pParent->getView()->getThumbPos();
233 aOutputSize.AdjustWidth( -(aThumbPos.X()) );
234 aOutputSize.AdjustHeight( -m_aSplitter->GetSizePixel().Height() );
235
236 if ( m_aStartMarker->isCollapsed() )
237 {
238 Point aPos(0,0);
239 m_aStartMarker->SetPosSizePixel(aPos,aOutputSize);
240 }
241 else
242 {
243 const bool bShowEndMarker = m_pParent->getView()->GetTotalWidth() <= (aThumbPos.X() + aOutputSize.Width() );
244
245 long nStartWidth = long(REPORT_STARTMARKER_WIDTH120 * GetMapMode().GetScaleX());
246
247 // set start marker
248 m_aStartMarker->SetPosSizePixel(Point(0,0),Size(nStartWidth,aOutputSize.Height()));
249
250 // set report section
251 const uno::Reference< report::XSection> xSection = m_aReportSection->getSection();
252 Size aSectionSize = LogicToPixel( Size( 0,xSection->getHeight() ) );
253 Point aReportPos(nStartWidth,0);
254 aSectionSize.setWidth( aOutputSize.Width() - nStartWidth );
255 if ( bShowEndMarker )
256 aSectionSize.AdjustWidth( -nEndWidth );
257
258 m_aReportSection->SetPosSizePixel(aReportPos,aSectionSize);
259
260 // set splitter
261 aReportPos.AdjustY(aSectionSize.Height() );
262 m_aSplitter->SetPosSizePixel(aReportPos,Size(aSectionSize.Width(),m_aSplitter->GetSizePixel().Height()));
263 aSectionSize.setHeight( static_cast<long>(1000 * static_cast<double>(GetMapMode().GetScaleY())) );
264 m_aSplitter->SetDragRectPixel( tools::Rectangle(Point(nStartWidth,0),aSectionSize));
265
266 // set end marker
267 aReportPos.AdjustX(aSectionSize.Width() );
268 aReportPos.setY( 0 );
269 m_aEndMarker->Show(bShowEndMarker);
270 m_aEndMarker->SetPosSizePixel(aReportPos,Size(nEndWidth,aOutputSize.Height()));
271 }
272}
273
274void OSectionWindow::setCollapsed(bool _bCollapsed)
275{
276 if ( m_aStartMarker->isCollapsed() != _bCollapsed )
277 {
278 m_aStartMarker->setCollapsed(_bCollapsed);
279 }
280}
281
282void OSectionWindow::showProperties()
283{
284 m_pParent->getView()->showProperties( m_aReportSection->getSection().get() );
285}
286
287void OSectionWindow::setMarked(bool _bMark)
288{
289 m_aStartMarker->setMarked(_bMark);
290 m_aEndMarker->setMarked(_bMark);
291}
292
293IMPL_LINK( OSectionWindow, Collapsed, OColorListener&, _rMarker, void )void OSectionWindow::LinkStubCollapsed(void * instance, OColorListener
& data) { return static_cast<OSectionWindow *>(instance
)->Collapsed(data); } void OSectionWindow::Collapsed(OColorListener
& _rMarker)
294{
295 bool bShow = !_rMarker.isCollapsed();
296 m_aReportSection->Show(bShow);
297 m_aEndMarker->Show(bShow);
298 m_aSplitter->Show(bShow);
299
300 m_pParent->resize(*this);
301}
302
303void OSectionWindow::zoom(const Fraction& _aZoom)
304{
305 setZoomFactor(_aZoom,*this);
306 m_aStartMarker->zoom(_aZoom);
307
308 setZoomFactor(_aZoom, *m_aReportSection);
309 setZoomFactor(_aZoom, *m_aSplitter);
310 setZoomFactor(_aZoom, *m_aEndMarker);
311 Invalidate();
312}
313
314IMPL_LINK_NOARG( OSectionWindow, StartSplitHdl, Splitter*, void)void OSectionWindow::LinkStubStartSplitHdl(void * instance, Splitter
* data) { return static_cast<OSectionWindow *>(instance
)->StartSplitHdl(data); } void OSectionWindow::StartSplitHdl
(__attribute__ ((unused)) Splitter*)
315{
316 const OUString sUndoAction( RptResId( RID_STR_UNDO_CHANGE_SIZEreinterpret_cast<char const *>("RID_STR_UNDO_CHANGE_SIZE"
"\004" u8"Change Size")
) );
317 getViewsWindow()->getView()->getReportView()->getController().getUndoManager().EnterListAction( sUndoAction, OUString(), 0, ViewShellId(-1) );
318}
319
320IMPL_LINK_NOARG( OSectionWindow, EndSplitHdl, Splitter*, void )void OSectionWindow::LinkStubEndSplitHdl(void * instance, Splitter
* data) { return static_cast<OSectionWindow *>(instance
)->EndSplitHdl(data); } void OSectionWindow::EndSplitHdl(__attribute__
((unused)) Splitter*)
321{
322 getViewsWindow()->getView()->getReportView()->getController().getUndoManager().LeaveListAction();
323}
324
325IMPL_LINK( OSectionWindow, SplitHdl, Splitter*, _pSplitter, void )void OSectionWindow::LinkStubSplitHdl(void * instance, Splitter
* data) { return static_cast<OSectionWindow *>(instance
)->SplitHdl(data); } void OSectionWindow::SplitHdl(Splitter
* _pSplitter)
326{
327 if ( !getViewsWindow()->getView()->getReportView()->getController().isEditable() )
328 {
329 return;
330 }
331
332 sal_Int32 nSplitPos = _pSplitter->GetSplitPosPixel();
333
334 const uno::Reference< report::XSection> xSection = m_aReportSection->getSection();
335 nSplitPos = m_aSplitter->PixelToLogic(Size(0,nSplitPos)).Height();
336
337 const sal_Int32 nCount = xSection->getCount();
338 for (sal_Int32 i = 0; i < nCount; ++i)
339 {
340 uno::Reference<report::XReportComponent> xReportComponent(xSection->getByIndex(i),uno::UNO_QUERY);
341 if ( xReportComponent.is() )
342 {
343 nSplitPos = ::std::max(nSplitPos,xReportComponent->getPositionY() + xReportComponent->getHeight());
344 }
345 }
346
347 if ( nSplitPos < 0 )
348 nSplitPos = 0;
349
350 xSection->setHeight(nSplitPos);
351 m_aSplitter->SetSplitPosPixel(m_aSplitter->LogicToPixel(Size(0,nSplitPos)).Height());
352}
353
354static void lcl_scroll(vcl::Window& _rWindow,const Point& _aDelta)
355{
356 _rWindow.Scroll(-_aDelta.X(),-_aDelta.Y());
357 _rWindow.Invalidate(InvalidateFlags::Transparent);
358}
359
360static void lcl_setOrigin(vcl::Window& _rWindow,long _nX, long _nY)
361{
362 MapMode aMap = _rWindow.GetMapMode();
363 aMap.SetOrigin( Point(- _nX, - _nY));
364 _rWindow.SetMapMode( aMap );
365}
366
367void OSectionWindow::scrollChildren(long _nX)
368{
369 const Point aDelta( _nX,0 );
370
371 MapMode aMapMode( m_aReportSection->GetMapMode() );
372 const Point aOld = aMapMode.GetOrigin();
373 lcl_setOrigin(*m_aReportSection, aDelta.X(), 0);
374
375 aMapMode = m_aReportSection->GetMapMode();
376 const Point aNew = aMapMode.GetOrigin();
377 const Point aDiff = aOld - aNew;
378 {
379 lcl_scroll(*m_aReportSection, aDiff);
380 }
381
382 lcl_scroll(*m_aEndMarker, m_aEndMarker->PixelToLogic(Point(_nX,0)));
383
384 lcl_setOrigin(*m_aSplitter,_nX, 0);
385 lcl_scroll(*m_aSplitter,aDiff);
386}
387
388} // rptui
389
390
391/* vim:set shiftwidth=4 softtabstop=4 expandtab: */

/home/maarten/src/libreoffice/core/include/vcl/vclptr.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_VCL_PTR_HXX
21#define INCLUDED_VCL_PTR_HXX
22
23#include <sal/config.h>
24
25#include <rtl/ref.hxx>
26
27#include <utility>
28#include <type_traits>
29
30#ifdef DBG_UTIL
31#ifndef _WIN32
32#include <vcl/vclmain.hxx>
33#endif
34#endif
35
36class VclReferenceBase;
37
38namespace vcl::detail {
39
40template<typename>
41constexpr bool isIncompleteOrDerivedFromVclReferenceBase(...) { return true; }
42
43template<typename T> constexpr bool isIncompleteOrDerivedFromVclReferenceBase(
44 int (*)[sizeof(T)])
45{ return std::is_base_of<VclReferenceBase, T>::value; }
46
47} // namespace vcl::detail
48
49/**
50 * A thin wrapper around rtl::Reference to implement the acquire and dispose semantics we want for references to vcl::Window subclasses.
51 *
52 * For more details on the design please see vcl/README.lifecycle
53 *
54 * @param reference_type must be a subclass of vcl::Window
55 */
56template <class reference_type>
57class VclPtr
58{
59 static_assert(
60 vcl::detail::isIncompleteOrDerivedFromVclReferenceBase<reference_type>(
61 nullptr),
62 "template argument type must be derived from VclReferenceBase");
63
64 ::rtl::Reference<reference_type> m_rInnerRef;
65
66public:
67 /** Constructor...
68 */
69 VclPtr()
70 : m_rInnerRef()
71 {}
72
73 /** Constructor...
74 */
75 VclPtr (reference_type * pBody)
76 : m_rInnerRef(pBody)
77 {}
78
79 /** Constructor... that doesn't take a ref.
80 */
81 VclPtr (reference_type * pBody, __sal_NoAcquire)
82 : m_rInnerRef(pBody, SAL_NO_ACQUIRE)
83 {}
84
85 /** Up-casting conversion constructor: Copies interface reference.
86
87 Does not work for up-casts to ambiguous bases. For the special case of
88 up-casting to Reference< XInterface >, see the corresponding conversion
89 operator.
90
91 @param rRef another reference
92 */
93 template< class derived_type >
94 VclPtr(
95 const VclPtr< derived_type > & rRef,
96 typename std::enable_if<
97 std::is_base_of<reference_type, derived_type>::value, int>::type
98 = 0 )
99 : m_rInnerRef( static_cast<reference_type*>(rRef) )
100 {
101 }
102
103#if defined(DBG_UTIL) && !defined(_WIN32)
104 virtual ~VclPtr()
105 {
106 assert(m_rInnerRef.get() == nullptr || vclmain::isAlive())(static_cast <bool> (m_rInnerRef.get() == nullptr || vclmain
::isAlive()) ? void (0) : __assert_fail ("m_rInnerRef.get() == nullptr || vclmain::isAlive()"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 106, __extension__ __PRETTY_FUNCTION__))
;
107 // We can be one of the intermediate counts, but if we are the last
108 // VclPtr keeping this object alive, then something forgot to call dispose().
109 assert((!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1)(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
110 && "someone forgot to call dispose()")(static_cast <bool> ((!m_rInnerRef.get() || m_rInnerRef
->isDisposed() || m_rInnerRef->getRefCount() > 1) &&
"someone forgot to call dispose()") ? void (0) : __assert_fail
("(!m_rInnerRef.get() || m_rInnerRef->isDisposed() || m_rInnerRef->getRefCount() > 1) && \"someone forgot to call dispose()\""
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 110, __extension__ __PRETTY_FUNCTION__))
;
111 }
112 VclPtr(VclPtr const &) = default;
113 VclPtr(VclPtr &&) = default;
114 VclPtr & operator =(VclPtr const &) = default;
115 VclPtr & operator =(VclPtr &&) = default;
116#endif
117
118 /**
119 * A construction helper for VclPtr. Since VclPtr types are created
120 * with a reference-count of one - to help fit into the existing
121 * code-flow; this helps us to construct them easily.
122 *
123 * For more details on the design please see vcl/README.lifecycle
124 *
125 * @tparam reference_type must be a subclass of vcl::Window
126 */
127 template<typename... Arg> [[nodiscard]] static VclPtr< reference_type > Create(Arg &&... arg)
128 {
129 return VclPtr< reference_type >( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE );
130 }
131
132 /** Probably most common used: handle->someBodyOp().
133 */
134 reference_type * operator->() const
135 {
136 return m_rInnerRef.get();
137 }
138
139 /** Get the body. Can be used instead of operator->().
140 I.e. handle->someBodyOp() and handle.get()->someBodyOp()
141 are the same.
142 */
143 reference_type * get() const
144 {
145 return m_rInnerRef.get();
146 }
147
148 void set(reference_type *pBody)
149 {
150 m_rInnerRef.set(pBody);
151 }
152
153 void reset(reference_type *pBody)
154 {
155 m_rInnerRef.set(pBody);
156 }
157
158 /** Up-casting copy assignment operator.
159
160 Does not work for up-casts to ambiguous bases.
161
162 @param rRef another reference
163 */
164 template<typename derived_type>
165 typename std::enable_if<
166 std::is_base_of<reference_type, derived_type>::value,
167 VclPtr &>::type
168 operator =(VclPtr<derived_type> const & rRef)
169 {
170 m_rInnerRef.set(rRef.get());
171 return *this;
172 }
173
174 VclPtr & operator =(reference_type * pBody)
175 {
176 m_rInnerRef.set(pBody);
177 return *this;
178 }
179
180 operator reference_type * () const
181 {
182 return m_rInnerRef.get();
183 }
184
185 explicit operator bool () const
186 {
187 return m_rInnerRef.get() != nullptr;
188 }
189
190 void clear()
191 {
192 m_rInnerRef.clear();
193 }
194
195 void reset()
196 {
197 m_rInnerRef.clear();
198 }
199
200 void disposeAndClear()
201 {
202 // hold it alive for the lifetime of this method
203 ::rtl::Reference<reference_type> aTmp(m_rInnerRef);
4
Calling copy constructor for 'Reference<rptui::OEndMarker>'
7
Returning from copy constructor for 'Reference<rptui::OEndMarker>'
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
8
Calling 'Reference::clear'
15
Returning; memory was released
205 if (aTmp.get()) {
16
Calling 'Reference::get'
206 aTmp->disposeOnce();
207 }
208 }
209
210 /** Needed to place VclPtr's into STL collection.
211 */
212 bool operator< (const VclPtr<reference_type> & handle) const
213 {
214 return (m_rInnerRef < handle.m_rInnerRef);
215 }
216}; // class VclPtr
217
218template<typename T1, typename T2>
219inline bool operator ==(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
220 return p1.get() == p2.get();
221}
222
223template<typename T> inline bool operator ==(VclPtr<T> const & p1, T const * p2)
224{
225 return p1.get() == p2;
226}
227
228template<typename T> inline bool operator ==(VclPtr<T> const & p1, T * p2) {
229 return p1.get() == p2;
230}
231
232template<typename T> inline bool operator ==(T const * p1, VclPtr<T> const & p2)
233{
234 return p1 == p2.get();
235}
236
237template<typename T> inline bool operator ==(T * p1, VclPtr<T> const & p2) {
238 return p1 == p2.get();
239}
240
241template<typename T1, typename T2>
242inline bool operator !=(VclPtr<T1> const & p1, VclPtr<T2> const & p2) {
243 return !(p1 == p2);
244}
245
246template<typename T> inline bool operator !=(VclPtr<T> const & p1, T const * p2)
247{
248 return !(p1 == p2);
249}
250
251template<typename T> inline bool operator !=(VclPtr<T> const & p1, T * p2) {
252 return !(p1 == p2);
253}
254
255template<typename T> inline bool operator !=(T const * p1, VclPtr<T> const & p2)
256{
257 return !(p1 == p2);
258}
259
260template<typename T> inline bool operator !=(T * p1, VclPtr<T> const & p2) {
261 return !(p1 == p2);
262}
263
264/**
265 * A construction helper for a temporary VclPtr. Since VclPtr types
266 * are created with a reference-count of one - to help fit into
267 * the existing code-flow; this helps us to construct them easily.
268 * see also VclPtr::Create and ScopedVclPtr
269 *
270 * For more details on the design please see vcl/README.lifecycle
271 *
272 * @param reference_type must be a subclass of vcl::Window
273 */
274template <class reference_type>
275class SAL_WARN_UNUSED__attribute__((warn_unused)) VclPtrInstance final : public VclPtr<reference_type>
276{
277public:
278 template<typename... Arg> VclPtrInstance(Arg &&... arg)
279 : VclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
280 {
281 }
282
283 /**
284 * Override and disallow this, to prevent people accidentally calling it and actually
285 * getting VclPtr::Create and getting a naked VclPtr<> instance
286 */
287 template<typename... Arg> static VclPtrInstance< reference_type > Create(Arg &&... ) = delete;
288};
289
290template <class reference_type>
291class ScopedVclPtr : public VclPtr<reference_type>
292{
293public:
294 /** Constructor...
295 */
296 ScopedVclPtr()
297 : VclPtr<reference_type>()
298 {}
299
300 /** Constructor
301 */
302 ScopedVclPtr (reference_type * pBody)
303 : VclPtr<reference_type>(pBody)
304 {}
305
306 /** Copy constructor...
307 */
308 ScopedVclPtr (const VclPtr<reference_type> & handle)
309 : VclPtr<reference_type>(handle)
310 {}
311
312 /**
313 Assignment that releases the last reference.
314 */
315 void disposeAndReset(reference_type *pBody)
316 {
317 if (pBody != this->get()) {
318 VclPtr<reference_type>::disposeAndClear();
319 VclPtr<reference_type>::set(pBody);
320 }
321 }
322
323 /**
324 Assignment that releases the last reference.
325 */
326 ScopedVclPtr<reference_type>& operator = (reference_type * pBody)
327 {
328 disposeAndReset(pBody);
329 return *this;
330 }
331
332 /** Up-casting conversion constructor: Copies interface reference.
333
334 Does not work for up-casts to ambiguous bases. For the special case of
335 up-casting to Reference< XInterface >, see the corresponding conversion
336 operator.
337
338 @param rRef another reference
339 */
340 template< class derived_type >
341 ScopedVclPtr(
342 const VclPtr< derived_type > & rRef,
343 typename std::enable_if<
344 std::is_base_of<reference_type, derived_type>::value, int>::type
345 = 0 )
346 : VclPtr<reference_type>( rRef )
347 {
348 }
349
350 /** Up-casting assignment operator.
351
352 Does not work for up-casts to ambiguous bases.
353
354 @param rRef another VclPtr
355 */
356 template<typename derived_type>
357 typename std::enable_if<
358 std::is_base_of<reference_type, derived_type>::value,
359 ScopedVclPtr &>::type
360 operator =(VclPtr<derived_type> const & rRef)
361 {
362 disposeAndReset(rRef.get());
363 return *this;
364 }
365
366 /**
367 * Override and disallow this, to prevent people accidentally calling it and actually
368 * getting VclPtr::Create and getting a naked VclPtr<> instance
369 */
370 template<typename... Arg> static ScopedVclPtr< reference_type > Create(Arg &&... ) = delete;
371
372 ~ScopedVclPtr()
373 {
374 VclPtr<reference_type>::disposeAndClear();
375 assert(VclPtr<reference_type>::get() == nullptr)(static_cast <bool> (VclPtr<reference_type>::get(
) == nullptr) ? void (0) : __assert_fail ("VclPtr<reference_type>::get() == nullptr"
, "/home/maarten/src/libreoffice/core/include/vcl/vclptr.hxx"
, 375, __extension__ __PRETTY_FUNCTION__))
; // make sure there are no lingering references
376 }
377
378private:
379 // Most likely we don't want this default copy-constructor.
380 ScopedVclPtr (const ScopedVclPtr<reference_type> &) = delete;
381 // And certainly we don't want a default assignment operator.
382 ScopedVclPtr<reference_type>& operator = (const ScopedVclPtr<reference_type> &) = delete;
383 // And disallow reset as that doesn't call disposeAndClear on the original reference
384 void reset() = delete;
385 void reset(reference_type *pBody) = delete;
386
387protected:
388 ScopedVclPtr (reference_type * pBody, __sal_NoAcquire)
389 : VclPtr<reference_type>(pBody, SAL_NO_ACQUIRE)
390 {}
391};
392
393/**
394 * A construction helper for ScopedVclPtr. Since VclPtr types are created
395 * with a reference-count of one - to help fit into the existing
396 * code-flow; this helps us to construct them easily.
397 *
398 * For more details on the design please see vcl/README.lifecycle
399 *
400 * @param reference_type must be a subclass of vcl::Window
401 */
402#if defined _MSC_VER
403#pragma warning(push)
404#pragma warning(disable: 4521) // " multiple copy constructors specified"
405#endif
406template <class reference_type>
407class SAL_WARN_UNUSED__attribute__((warn_unused)) ScopedVclPtrInstance final : public ScopedVclPtr<reference_type>
408{
409public:
410 template<typename... Arg> ScopedVclPtrInstance(Arg &&... arg)
411 : ScopedVclPtr<reference_type>( new reference_type(std::forward<Arg>(arg)...), SAL_NO_ACQUIRE )
412 {
413 }
414
415 /**
416 * Override and disallow this, to prevent people accidentally calling it and actually
417 * getting VclPtr::Create and getting a naked VclPtr<> instance
418 */
419 template<typename... Arg> static ScopedVclPtrInstance< reference_type > Create(Arg &&...) = delete;
420
421private:
422 // Prevent the above perfect forwarding ctor from hijacking (accidental)
423 // attempts at ScopedVclPtrInstance copy construction (where the hijacking
424 // would typically lead to somewhat obscure error messages); both non-const
425 // and const variants are needed here, as the ScopedVclPtr base class has a
426 // const--variant copy ctor, so the implicitly declared copy ctor for
427 // ScopedVclPtrInstance would also be the const variant, so non-const copy
428 // construction attempts would be hijacked by the perfect forwarding ctor;
429 // but if we only declared a non-const variant here, the const variant would
430 // no longer be implicitly declared (as there would already be an explicitly
431 // declared copy ctor), so const copy construction attempts would then be
432 // hijacked by the perfect forwarding ctor:
433 ScopedVclPtrInstance(ScopedVclPtrInstance &) = delete;
434 ScopedVclPtrInstance(ScopedVclPtrInstance const &) = delete;
435};
436#if defined _MSC_VER
437#pragma warning(pop)
438#endif
439
440#endif // INCLUDED_VCL_PTR_HXX
441
442/* 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)
5
Assuming field 'm_pBody' is non-null
6
Taking true branch
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)
113 m_pBody->release();
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
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
8.1
Field 'm_pBody' is non-null
)
9
Taking true branch
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
10
Calling 'VclReferenceBase::release'
14
Returning; memory was released
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;
17
Use of memory after it is freed
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)
11
Assuming the condition is true
12
Taking true branch
40 delete this;
13
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