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 TabBar.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 -isystem /usr/include/libxml2 -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 SFX2_DLLIMPLEMENTATION -D ENABLE_CUPS -D SYSTEM_LIBXML -D EXCEPTIONS_ON -D LIBO_INTERNAL_ONLY -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/liborcus/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/liborcus/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/sfx2/inc -I /home/maarten/src/libreoffice/core/sfx2/source/inc -I /home/maarten/src/libreoffice/core/workdir/SdiTarget/sfx2/sdi -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/workdir/CustomTarget/officecfg/registry -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/sfx2/source/sidebar/TabBar.cxx

/home/maarten/src/libreoffice/core/sfx2/source/sidebar/TabBar.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 <sfx2/sidebar/TabBar.hxx>
21#include <sidebar/ControlFactory.hxx>
22#include <sidebar/DeckDescriptor.hxx>
23#include <sidebar/Paint.hxx>
24#include <sfx2/sidebar/Theme.hxx>
25#include <sidebar/Tools.hxx>
26#include <sfx2/sidebar/FocusManager.hxx>
27#include <sfx2/sidebar/SidebarController.hxx>
28#include <sfx2/strings.hrc>
29
30#include <sfx2/sfxresid.hxx>
31
32#include <comphelper/processfactory.hxx>
33#include <o3tl/safeint.hxx>
34#include <vcl/button.hxx>
35#include <vcl/commandevent.hxx>
36#include <vcl/event.hxx>
37#include <vcl/image.hxx>
38#include <vcl/svapp.hxx>
39#include <tools/svborder.hxx>
40#include <svtools/acceleratorexecute.hxx>
41
42using namespace css;
43using namespace css::uno;
44
45namespace sfx2::sidebar {
46
47TabBar::TabBar(vcl::Window* pParentWindow,
48 const Reference<frame::XFrame>& rxFrame,
49 const std::function<void (const OUString&)>& rDeckActivationFunctor,
50 const PopupMenuProvider& rPopupMenuProvider,
51 SidebarController* rParentSidebarController
52 )
53 : Window(pParentWindow, WB_DIALOGCONTROL),
54 mxFrame(rxFrame),
55 mpMenuButton(ControlFactory::CreateMenuButton(this)),
56 maItems(),
57 maDeckActivationFunctor(rDeckActivationFunctor),
58 maPopupMenuProvider(rPopupMenuProvider),
59 pParentSidebarController(rParentSidebarController)
60{
61
62 SetBackground(Theme::GetPaint(Theme::Paint_TabBarBackground).GetWallpaper());
63
64 mpMenuButton->SetModeImage(Theme::GetImage(Theme::Image_TabBarMenu));
65 mpMenuButton->SetClickHdl(LINK(this, TabBar, OnToolboxClicked)::tools::detail::makeLink( ::tools::detail::castTo<TabBar *
>(this), &TabBar::LinkStubOnToolboxClicked));
66 mpMenuButton->SetQuickHelpText(SfxResId(SFX_STR_SIDEBAR_SETTINGSreinterpret_cast<char const *>("SFX_STR_SIDEBAR_SETTINGS"
"\004" u8"Sidebar Settings")));
67 Layout();
68
69#ifdef DEBUG
70 SetText(OUString("TabBar"));
71#endif
72}
73
74TabBar::~TabBar()
75{
76 disposeOnce();
77}
78
79void TabBar::dispose()
80{
81 for (auto & item : maItems)
82 item.mpButton.disposeAndClear();
83 maItems.clear();
84 mpMenuButton.disposeAndClear();
85 vcl::Window::dispose();
86}
87
88void TabBar::Paint(vcl::RenderContext& rRenderContext, const tools::Rectangle& rUpdateArea)
89{
90 Window::Paint(rRenderContext, rUpdateArea);
91
92 const sal_Int32 nHorizontalPadding(Theme::GetInteger(Theme::Int_TabMenuSeparatorPadding));
93 rRenderContext.SetLineColor(Theme::GetColor(Theme::Color_TabMenuSeparator));
94 rRenderContext.DrawLine(Point(nHorizontalPadding, mnMenuSeparatorY),
95 Point(GetSizePixel().Width() - nHorizontalPadding, mnMenuSeparatorY));
96}
97
98sal_Int32 TabBar::GetDefaultWidth()
99{
100 return Theme::GetInteger(Theme::Int_TabItemWidth)
101 + Theme::GetInteger(Theme::Int_TabBarLeftPadding)
102 + Theme::GetInteger(Theme::Int_TabBarRightPadding);
103}
104
105void TabBar::SetDecks(const ResourceManager::DeckContextDescriptorContainer& rDecks)
106{
107 // Remove the current buttons.
108 {
109 for (auto & item : maItems)
110 {
111 item.mpButton.disposeAndClear();
1
Calling 'VclPtr::disposeAndClear'
→
112 }
113 maItems.clear();
114 }
115 maItems.resize(rDecks.size());
116 sal_Int32 nIndex (0);
117 for (auto const& deck : rDecks)
118 {
119 std::shared_ptr<DeckDescriptor> xDescriptor = pParentSidebarController->GetResourceManager()->GetDeckDescriptor(deck.msId);
120 if (xDescriptor == nullptr)
121 {
122 OSL_ASSERT(xDescriptor!=nullptr)do { if (true && (!(xDescriptor!=nullptr))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/sfx2/source/sidebar/TabBar.cxx"
":" "122" ": "), "OSL_ASSERT: %s", "xDescriptor!=nullptr"); }
} while (false);
123 continue;
124 }
125
126 Item& rItem (maItems[nIndex++]);
127 rItem.msDeckId = xDescriptor->msId;
128 rItem.mpButton.disposeAndClear();
129 rItem.mpButton = CreateTabItem(*xDescriptor);
130 rItem.mpButton->SetClickHdl(LINK(&rItem, TabBar::Item, HandleClick)::tools::detail::makeLink( ::tools::detail::castTo<TabBar::
Item *>(&rItem), &TabBar::Item::LinkStubHandleClick
));
131 rItem.maDeckActivationFunctor = maDeckActivationFunctor;
132 rItem.mbIsHidden = ! xDescriptor->mbIsEnabled;
133 rItem.mbIsHiddenByDefault = rItem.mbIsHidden; // the default is the state while creating
134
135 rItem.mpButton->Enable(deck.mbIsEnabled);
136 }
137
138 UpdateButtonIcons();
139 Layout();
140}
141
142void TabBar::UpdateButtonIcons()
143{
144 Image aImage = Theme::GetImage(Theme::Image_TabBarMenu);
145 mpMenuButton->SetModeImage(aImage);
146
147 for (auto const& item : maItems)
148 {
149 std::shared_ptr<DeckDescriptor> xDeckDescriptor = pParentSidebarController->GetResourceManager()->GetDeckDescriptor(item.msDeckId);
150
151 if (xDeckDescriptor)
152 {
153 aImage = GetItemImage(*xDeckDescriptor);
154 item.mpButton->SetModeImage(aImage);
155 }
156 }
157
158 Invalidate();
159}
160
161void TabBar::Layout()
162{
163 const SvBorder aPadding (
164 Theme::GetInteger(Theme::Int_TabBarLeftPadding),
165 Theme::GetInteger(Theme::Int_TabBarTopPadding),
166 Theme::GetInteger(Theme::Int_TabBarRightPadding),
167 Theme::GetInteger(Theme::Int_TabBarBottomPadding));
168 sal_Int32 nX (aPadding.Top());
169 sal_Int32 nY (aPadding.Left());
170 const Size aTabItemSize (
171 Theme::GetInteger(Theme::Int_TabItemWidth) * GetDPIScaleFactor(),
172 Theme::GetInteger(Theme::Int_TabItemHeight) * GetDPIScaleFactor());
173
174 // Place the menu button and the separator.
175 if (mpMenuButton != nullptr)
176 {
177 mpMenuButton->SetPosSizePixel(
178 Point(nX,nY),
179 aTabItemSize);
180 mpMenuButton->Show();
181 nY += mpMenuButton->GetSizePixel().Height() + 1 + Theme::GetInteger(Theme::Int_TabMenuPadding);
182 mnMenuSeparatorY = nY - Theme::GetInteger(Theme::Int_TabMenuPadding)/2 - 1;
183 }
184
185 // Place the deck selection buttons.
186 for (auto const& item : maItems)
187 {
188 Button& rButton (*item.mpButton);
189 rButton.Show( ! item.mbIsHidden);
190
191 if (item.mbIsHidden)
192 continue;
193
194 // Place and size the icon.
195 rButton.SetPosSizePixel(
196 Point(nX,nY),
197 aTabItemSize);
198 rButton.Show();
199
200 nY += rButton.GetSizePixel().Height() + 1 + aPadding.Bottom();
201 }
202 Invalidate();
203}
204
205void TabBar::HighlightDeck (const OUString& rsDeckId)
206{
207 for (auto const& item : maItems)
208 {
209 if (item.msDeckId == rsDeckId)
210 item.mpButton->Check();
211 else
212 item.mpButton->Check(false);
213 }
214}
215
216void TabBar::RemoveDeckHighlight ()
217{
218 for (auto const& item : maItems)
219 {
220 item.mpButton->Check(false);
221 }
222}
223
224void TabBar::DataChanged (const DataChangedEvent& rDataChangedEvent)
225{
226 SetBackground(Theme::GetPaint(Theme::Paint_TabBarBackground).GetWallpaper());
227 UpdateButtonIcons();
228
229 Window::DataChanged(rDataChangedEvent);
230}
231
232bool TabBar::EventNotify(NotifyEvent& rEvent)
233{
234 MouseNotifyEvent nType = rEvent.GetType();
235 if(MouseNotifyEvent::KEYINPUT == nType)
236 {
237 const vcl::KeyCode& rKeyCode = rEvent.GetKeyEvent()->GetKeyCode();
238 if (!mpAccel)
239 {
240 mpAccel = svt::AcceleratorExecute::createAcceleratorHelper();
241 mpAccel->init(comphelper::getProcessComponentContext(), mxFrame);
242 }
243 const OUString aCommand(mpAccel->findCommand(svt::AcceleratorExecute::st_VCLKey2AWTKey(rKeyCode)));
244 if (".uno:Sidebar" == aCommand ||
245 (rKeyCode.IsMod1() && rKeyCode.IsShift() && rKeyCode.GetCode() == KEY_F10))
246 return vcl::Window::EventNotify(rEvent);
247 return true;
248 }
249 else if(MouseNotifyEvent::COMMAND == nType)
250 {
251 const CommandEvent& rCommandEvent = *rEvent.GetCommandEvent();
252 if(rCommandEvent.GetCommand() == CommandEventId::Wheel)
253 {
254 const CommandWheelData* pData = rCommandEvent.GetWheelData();
255 if(!pData->GetModifier() && (pData->GetMode() == CommandWheelMode::SCROLL))
256 {
257 auto pItem = std::find_if(maItems.begin(), maItems.end(),
258 [] (Item const& rItem) { return rItem.mpButton->IsChecked(); });
259 if(pItem == maItems.end())
260 return true;
261 if(pData->GetNotchDelta()<0)
262 {
263 if(pItem+1 == maItems.end())
264 return true;
265 ++pItem;
266 }
267 else
268 {
269 if(pItem == maItems.begin())
270 return true;
271 --pItem;
272 }
273 try
274 {
275 pItem->maDeckActivationFunctor(pItem->msDeckId);
276 }
277 catch(const css::uno::Exception&) {};
278 return true;
279 }
280 }
281 }
282 return false;
283}
284
285VclPtr<RadioButton> TabBar::CreateTabItem(const DeckDescriptor& rDeckDescriptor)
286{
287 VclPtr<RadioButton> pItem = ControlFactory::CreateTabItem(this);
288 pItem->SetAccessibleName(rDeckDescriptor.msTitle);
289 pItem->SetAccessibleDescription(rDeckDescriptor.msHelpText);
290 pItem->SetHelpText(rDeckDescriptor.msHelpText);
291 pItem->SetQuickHelpText(rDeckDescriptor.msHelpText);
292 return pItem;
293}
294
295Image TabBar::GetItemImage(const DeckDescriptor& rDeckDescriptor) const
296{
297 return Tools::GetImage(
298 rDeckDescriptor.msIconURL,
299 rDeckDescriptor.msHighContrastIconURL,
300 mxFrame);
301}
302
303IMPL_LINK_NOARG(TabBar::Item, HandleClick, Button*, void)void TabBar::Item::LinkStubHandleClick(void * instance, Button
* data) { return static_cast<TabBar::Item *>(instance)->
HandleClick(data); } void TabBar::Item::HandleClick(__attribute__
((unused)) Button*)
304{
305 vcl::Window* pFocusWin = Application::GetFocusWindow();
306 pFocusWin->GrabFocusToDocument();
307 try
308 {
309 maDeckActivationFunctor(msDeckId);
310 }
311 catch(const css::uno::Exception&)
312 {} // workaround for #i123198#
313}
314
315OUString const & TabBar::GetDeckIdForIndex (const sal_Int32 nIndex) const
316{
317 if (nIndex<0 || o3tl::make_unsigned(nIndex)>=maItems.size())
318 throw RuntimeException();
319 return maItems[nIndex].msDeckId;
320}
321
322void TabBar::ToggleHideFlag (const sal_Int32 nIndex)
323{
324 if (nIndex<0 || o3tl::make_unsigned(nIndex) >= maItems.size())
325 throw RuntimeException();
326
327 maItems[nIndex].mbIsHidden = ! maItems[nIndex].mbIsHidden;
328
329 std::shared_ptr<DeckDescriptor> xDeckDescriptor = pParentSidebarController->GetResourceManager()->GetDeckDescriptor(maItems[nIndex].msDeckId);
330 if (xDeckDescriptor)
331 {
332 xDeckDescriptor->mbIsEnabled = ! maItems[nIndex].mbIsHidden;
333
334 Context aContext;
335 aContext.msApplication = pParentSidebarController->GetCurrentContext().msApplication;
336 // leave aContext.msContext on default 'any' ... this func is used only for decks
337 // and we don't have context-sensitive decks anyway
338
339 xDeckDescriptor->maContextList.ToggleVisibilityForContext(
340 aContext, xDeckDescriptor->mbIsEnabled );
341 }
342
343 Layout();
344}
345
346void TabBar::RestoreHideFlags()
347{
348 bool bNeedsLayout(false);
349 for (auto & item : maItems)
350 {
351 if (item.mbIsHidden != item.mbIsHiddenByDefault)
352 {
353 item.mbIsHidden = item.mbIsHiddenByDefault;
354 bNeedsLayout = true;
355
356 std::shared_ptr<DeckDescriptor> xDeckDescriptor = pParentSidebarController->GetResourceManager()->GetDeckDescriptor(item.msDeckId);
357 if (xDeckDescriptor)
358 xDeckDescriptor->mbIsEnabled = ! item.mbIsHidden;
359
360 }
361 }
362 if (bNeedsLayout)
363 Layout();
364}
365
366void TabBar::UpdateFocusManager(FocusManager& rFocusManager)
367{
368 std::vector<Button*> aButtons;
369 aButtons.reserve(maItems.size()+1);
370
371 aButtons.push_back(mpMenuButton.get());
372 for (auto const& item : maItems)
373 {
374 aButtons.push_back(item.mpButton.get());
375 }
376 rFocusManager.SetButtons(aButtons);
377}
378
379IMPL_LINK_NOARG(TabBar, OnToolboxClicked, Button*, void)void TabBar::LinkStubOnToolboxClicked(void * instance, Button
* data) { return static_cast<TabBar *>(instance)->OnToolboxClicked
(data); } void TabBar::OnToolboxClicked(__attribute__ ((unused
)) Button*)
380{
381 if (!mpMenuButton)
382 return;
383
384 std::vector<DeckMenuData> aMenuData;
385
386 for (auto const& item : maItems)
387 {
388 std::shared_ptr<DeckDescriptor> xDeckDescriptor = pParentSidebarController->GetResourceManager()->GetDeckDescriptor(item.msDeckId);
389
390 if (xDeckDescriptor)
391 {
392 DeckMenuData aData;
393 aData.msDisplayName = xDeckDescriptor->msTitle;
394 aData.mbIsCurrentDeck = item.mpButton->IsChecked();
395 aData.mbIsActive = !item.mbIsHidden;
396 aData.mbIsEnabled = item.mpButton->IsEnabled();
397
398 aMenuData.push_back(aData);
399 }
400 }
401
402 maPopupMenuProvider(
403 tools::Rectangle(
404 mpMenuButton->GetPosPixel(),
405 mpMenuButton->GetSizePixel()),
406 aMenuData);
407 mpMenuButton->Check(false);
408}
409
410void TabBar::EnableMenuButton(const bool bEnable)
411{
412 mpMenuButton->Enable(bEnable);
413}
414
415} // end of namespace sfx2::sidebar
416
417/* 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);
2
←
Calling copy constructor for 'Reference<RadioButton>'
→
5
←
Returning from copy constructor for 'Reference<RadioButton>'
→
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
6
←
Calling 'Reference::clear'
→
13
←
Returning; memory was released
→
205 if (aTmp.get()) {
14
←
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)
3
←
Assuming field 'm_pBody' is non-null
→
4
←
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
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
6.1
Field 'm_pBody' is non-null
)
7
←
Taking true branch
→
177 {
178 reference_type * const pOld = m_pBody;
179 m_pBody = NULL__null;
180 pOld->release();
8
←
Calling 'VclReferenceBase::release'
→
12
←
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;
15
←
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)
9
←
Assuming the condition is true
→
10
←
Taking true branch
→
40 delete this;
11
←
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