Bug Summary

File:home/maarten/src/libreoffice/core/sfx2/source/view/lokcharthelper.cxx
Warning:line 102, column 47
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 lokcharthelper.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/view/lokcharthelper.cxx

/home/maarten/src/libreoffice/core/sfx2/source/view/lokcharthelper.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
10#include <sfx2/lokcharthelper.hxx>
11
12#include <comphelper/lok.hxx>
13#include <LibreOfficeKit/LibreOfficeKitEnums.h>
14#include <sfx2/ipclient.hxx>
15#include <sfx2/lokhelper.hxx>
16#include <toolkit/helper/vclunohelper.hxx>
17#include <tools/fract.hxx>
18#include <tools/mapunit.hxx>
19#include <tools/UnitConversion.hxx>
20#include <vcl/virdev.hxx>
21
22#include <com/sun/star/embed/XEmbeddedObject.hpp>
23#include <com/sun/star/frame/XDispatch.hpp>
24#include <com/sun/star/chart2/XChartDocument.hpp>
25
26#define TWIPS_PER_PIXEL15 15
27
28using namespace com::sun::star;
29
30namespace {
31
32Point lcl_TwipsToHMM( const Point& rPoint )
33{
34 return Point(convertTwipToMm100(rPoint.getX()), convertTwipToMm100(rPoint.getY()));
35}
36
37Size lcl_TwipsToHMM( const Size& rSize )
38{
39 return Size(convertTwipToMm100(rSize.getWidth()), convertTwipToMm100(rSize.getHeight()));
40}
41
42} // end anonymous ns
43
44css::uno::Reference<css::frame::XController>& LokChartHelper::GetXController()
45{
46 if(!mxController.is() && mpViewShell)
47 {
48 SfxInPlaceClient* pIPClient = mpViewShell->GetIPClient();
49 if (pIPClient)
50 {
51 const css::uno::Reference< ::css::embed::XEmbeddedObject >& xEmbObj = pIPClient->GetObject();
52 if( xEmbObj.is() )
53 {
54 ::css::uno::Reference< ::css::chart2::XChartDocument > xChart( xEmbObj->getComponent(), uno::UNO_QUERY );
55 if( xChart.is() )
56 {
57 ::css::uno::Reference< ::css::frame::XController > xChartController = xChart->getCurrentController();
58 if( xChartController.is() )
59 {
60 mxController = xChartController;
61 }
62 }
63 }
64 }
65 }
66
67 return mxController;
68}
69
70css::uno::Reference<css::frame::XDispatch>& LokChartHelper::GetXDispatcher()
71{
72 if( !mxDispatcher.is() )
73 {
74 ::css::uno::Reference< ::css::frame::XController >& xChartController = GetXController();
75 if( xChartController.is() )
76 {
77 ::css::uno::Reference< ::css::frame::XDispatch > xDispatcher( xChartController, uno::UNO_QUERY );
78 if( xDispatcher.is() )
79 {
80 mxDispatcher = xDispatcher;
81 }
82 }
83 }
84
85 return mxDispatcher;
86}
87
88vcl::Window* LokChartHelper::GetWindow()
89{
90 if (!mpWindow)
9
Taking true branch
91 {
92 ::css::uno::Reference< ::css::frame::XController >& xChartController = GetXController();
93 if( xChartController.is() )
10
Taking true branch
94 {
95 ::css::uno::Reference< ::css::frame::XFrame > xFrame = xChartController->getFrame();
96 if (xFrame.is())
11
Taking true branch
97 {
98 ::css::uno::Reference< ::css::awt::XWindow > xDockerWin = xFrame->getContainerWindow();
99 vcl::Window* pParent = VCLUnoHelper::GetWindow( xDockerWin ).get();
12
Calling implicit destructor for 'VclPtr<vcl::Window>'
13
Calling '~Reference'
21
Returning from '~Reference'
22
Returning from destructor for 'VclPtr<vcl::Window>'
100 if (pParent
22.1
'pParent' is non-null
22.1
'pParent' is non-null
22.1
'pParent' is non-null
)
23
Taking true branch
101 {
102 sal_uInt16 nTotChildren = pParent->GetChildCount();
24
Use of memory after it is freed
103 while (nTotChildren--)
104 {
105 vcl::Window* pChildWin = pParent->GetChild(nTotChildren);
106 if (pChildWin && pChildWin->IsChart())
107 {
108 mpWindow = pChildWin;
109 break;
110 }
111 }
112 }
113 }
114 }
115 }
116
117 return mpWindow.get();
118}
119
120tools::Rectangle LokChartHelper::GetChartBoundingBox()
121{
122 tools::Rectangle aBBox;
123 if (mpViewShell)
2
Assuming field 'mpViewShell' is non-null
3
Taking true branch
124 {
125 SfxInPlaceClient* pIPClient = mpViewShell->GetIPClient();
126 if (pIPClient)
4
Assuming 'pIPClient' is non-null
5
Taking true branch
127 {
128 vcl::Window* pRootWin = pIPClient->GetEditWin();
129 if (pRootWin)
6
Assuming 'pRootWin' is non-null
7
Taking true branch
130 {
131 vcl::Window* pWindow = GetWindow();
8
Calling 'LokChartHelper::GetWindow'
132 if (pWindow)
133 {
134 // In all cases, the following code fragment
135 // returns the chart bounding box in twips.
136 const MapMode& aCWMapMode = pWindow->GetMapMode();
137 double fXScale( aCWMapMode.GetScaleX() );
138 double fYScale( aCWMapMode.GetScaleY() );
139 Point aOffset = pWindow->GetOffsetPixelFrom(*pRootWin);
140 aOffset.setX( aOffset.X() * (TWIPS_PER_PIXEL15 / fXScale) );
141 aOffset.setY( aOffset.Y() * (TWIPS_PER_PIXEL15 / fYScale) );
142 Size aSize = pWindow->GetSizePixel();
143 aSize.setWidth( aSize.Width() * (TWIPS_PER_PIXEL15 / fXScale) );
144 aSize.setHeight( aSize.Height() * (TWIPS_PER_PIXEL15 / fYScale) );
145 aBBox = tools::Rectangle(aOffset, aSize);
146 }
147 }
148 }
149 }
150 return aBBox;
151}
152
153void LokChartHelper::Invalidate()
154{
155 mpWindow = nullptr;
156 mxDispatcher.clear();
157 mxController.clear();
158}
159
160bool LokChartHelper::Hit(const Point& aPos)
161{
162 if (mpViewShell)
163 {
164 vcl::Window* pChartWindow = GetWindow();
165 if (pChartWindow)
166 {
167 tools::Rectangle rChartBBox = GetChartBoundingBox();
168 return rChartBBox.IsInside(aPos);
169 }
170 }
171 return false;
172}
173
174bool LokChartHelper::HitAny(const Point& aPos)
175{
176 SfxViewShell* pCurView = SfxViewShell::Current();
177 int nPartForCurView = pCurView ? pCurView->getPart() : -1;
178 SfxViewShell* pViewShell = SfxViewShell::GetFirst();
179 while (pViewShell)
180 {
181 if (pViewShell->GetDocId() == pCurView->GetDocId() && pViewShell->getPart() == nPartForCurView)
182 {
183 LokChartHelper aChartHelper(pViewShell);
184 if (aChartHelper.Hit(aPos))
185 return true;
186 }
187 pViewShell = SfxViewShell::GetNext(*pViewShell);
188 }
189 return false;
190}
191
192void LokChartHelper::PaintTile(VirtualDevice& rRenderContext, const tools::Rectangle& rTileRect)
193{
194 if (!mpViewShell)
195 return;
196
197 vcl::Window* pChartWindow = GetWindow();
198 if (!pChartWindow)
199 return;
200
201 tools::Rectangle aChartRect = GetChartBoundingBox();
202 tools::Rectangle aTestRect = rTileRect;
203 aTestRect.Intersection( aChartRect );
204 if (aTestRect.IsEmpty())
205 return;
206
207 Point aOffset( aChartRect.Left() - rTileRect.Left(), aChartRect.Top() - rTileRect.Top() );
208 Point aOffsetFromTile = lcl_TwipsToHMM(aOffset);
209 Size aSize = lcl_TwipsToHMM(aChartRect.GetSize());
210 tools::Rectangle aRectangle(Point(0,0), aSize);
211
212 bool bEnableMapMode = !pChartWindow->IsMapModeEnabled();
213 pChartWindow->EnableMapMode();
214 bool bRenderContextEnableMapMode = !rRenderContext.IsMapModeEnabled();
215 rRenderContext.EnableMapMode();
216
217 rRenderContext.Push(PushFlags::MAPMODE);
218
219 MapMode aCWMapMode = pChartWindow->GetMapMode();
220 aCWMapMode.SetScaleX(rRenderContext.GetMapMode().GetScaleX());
221 aCWMapMode.SetScaleY(rRenderContext.GetMapMode().GetScaleY());
222
223 aCWMapMode.SetOrigin(aOffsetFromTile);
224 rRenderContext.SetMapMode(aCWMapMode);
225
226 pChartWindow->Paint(rRenderContext, aRectangle);
227
228 rRenderContext.Pop();
229
230 if (bRenderContextEnableMapMode)
231 rRenderContext.EnableMapMode(false);
232 if (bEnableMapMode)
233 pChartWindow->EnableMapMode(false);
234}
235
236void LokChartHelper::PaintAllChartsOnTile(VirtualDevice& rDevice,
237 int nOutputWidth, int nOutputHeight,
238 int nTilePosX, int nTilePosY,
239 long nTileWidth, long nTileHeight)
240{
241 if (comphelper::LibreOfficeKit::isTiledAnnotations())
242 return;
243
244 // Resizes the virtual device so to contain the entries context
245 rDevice.SetOutputSizePixel(Size(nOutputWidth, nOutputHeight));
246
247 rDevice.Push(PushFlags::MAPMODE);
248 MapMode aMapMode(rDevice.GetMapMode());
249
250 // Scaling. Must convert from pixels to twips. We know
251 // that VirtualDevices use a DPI of 96.
252 Fraction scaleX = Fraction(nOutputWidth, 96) * Fraction(1440) / Fraction(nTileWidth);
253 Fraction scaleY = Fraction(nOutputHeight, 96) * Fraction(1440) / Fraction(nTileHeight);
254 aMapMode.SetScaleX(scaleX);
255 aMapMode.SetScaleY(scaleY);
256 rDevice.SetMapMode(aMapMode);
257
258 SfxViewShell* pCurView = SfxViewShell::Current();
259 int nPartForCurView = pCurView ? pCurView->getPart() : -1;
260 tools::Rectangle aTileRect(Point(nTilePosX, nTilePosY), Size(nTileWidth, nTileHeight));
261 SfxViewShell* pViewShell = SfxViewShell::GetFirst();
262 while (pViewShell)
263 {
264 if (pCurView && pViewShell->GetDocId() == pCurView->GetDocId() && pViewShell->getPart() == nPartForCurView)
265 {
266 LokChartHelper aChartHelper(pViewShell);
267 aChartHelper.PaintTile(rDevice, aTileRect);
268 }
269 pViewShell = SfxViewShell::GetNext(*pViewShell);
270 }
271 rDevice.Pop();
272}
273
274bool LokChartHelper::postMouseEvent(int nType, int nX, int nY,
275 int nCount, int nButtons, int nModifier,
276 double fScaleX, double fScaleY)
277{
278 Point aMousePos(nX, nY);
279 vcl::Window* pChartWindow = GetWindow();
280 if (pChartWindow)
281 {
282 tools::Rectangle rChartBBox = GetChartBoundingBox();
283 if (rChartBBox.IsInside(aMousePos))
284 {
285 int nChartWinX = nX - rChartBBox.Left();
286 int nChartWinY = nY - rChartBBox.Top();
287
288 // chart window expects pixels, but the conversion factor
289 // can depend on the client zoom
290 Point aPos(nChartWinX * fScaleX, nChartWinY * fScaleY);
291
292 LokMouseEventData aMouseEventData(nType, aPos, nCount, MouseEventModifiers::SIMPLECLICK,
293 nButtons, nModifier);
294 SfxLokHelper::postMouseEventAsync(pChartWindow, aMouseEventData);
295
296 return true;
297 }
298 }
299 return false;
300}
301
302bool LokChartHelper::setTextSelection(int nType, int nX, int nY)
303{
304 tools::Rectangle rChartBBox = GetChartBoundingBox();
305 if (rChartBBox.IsInside(Point(nX, nY)))
306 {
307 css::uno::Reference<css::frame::XDispatch> xDispatcher = GetXDispatcher();
308 if (xDispatcher.is())
309 {
310 int nChartWinX = nX - rChartBBox.Left();
311 int nChartWinY = nY - rChartBBox.Top();
312
313 // no scale here the chart controller expects twips
314 // that are converted to hmm
315 util::URL aURL;
316 aURL.Path = "LOKSetTextSelection";
317 uno::Sequence< beans::PropertyValue > aArgs(3);
318 aArgs[0].Value <<= static_cast<sal_Int32>(nType);
319 aArgs[1].Value <<= static_cast<sal_Int32>(nChartWinX);
320 aArgs[2].Value <<= static_cast<sal_Int32>(nChartWinY);
321 xDispatcher->dispatch(aURL, aArgs);
322 }
323 return true;
324 }
325 return false;
326}
327
328bool LokChartHelper::setGraphicSelection(int nType, int nX, int nY,
329 double fScaleX, double fScaleY)
330{
331 tools::Rectangle rChartBBox = GetChartBoundingBox();
1
Calling 'LokChartHelper::GetChartBoundingBox'
332 if (rChartBBox.IsInside(Point(nX, nY)))
333 {
334 int nChartWinX = nX - rChartBBox.Left();
335 int nChartWinY = nY - rChartBBox.Top();
336
337 vcl::Window* pChartWindow = GetWindow();
338
339 Point aPos(nChartWinX * fScaleX, nChartWinY * fScaleY);
340 switch (nType)
341 {
342 case LOK_SETGRAPHICSELECTION_START:
343 {
344 MouseEvent aClickEvent(aPos, 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT(sal_uInt16(0x0001)));
345 pChartWindow->MouseButtonDown(aClickEvent);
346 MouseEvent aMoveEvent(aPos, 0, MouseEventModifiers::SIMPLEMOVE, MOUSE_LEFT(sal_uInt16(0x0001)));
347 pChartWindow->MouseMove(aMoveEvent);
348 }
349 break;
350 case LOK_SETGRAPHICSELECTION_END:
351 {
352 MouseEvent aMoveEvent(aPos, 0, MouseEventModifiers::SIMPLEMOVE, MOUSE_LEFT(sal_uInt16(0x0001)));
353 pChartWindow->MouseMove(aMoveEvent);
354 MouseEvent aClickEvent(aPos, 1, MouseEventModifiers::SIMPLECLICK, MOUSE_LEFT(sal_uInt16(0x0001)));
355 pChartWindow->MouseButtonUp(aClickEvent);
356 }
357 break;
358 default:
359 assert(false)(static_cast <bool> (false) ? void (0) : __assert_fail (
"false", "/home/maarten/src/libreoffice/core/sfx2/source/view/lokcharthelper.cxx"
, 359, __extension__ __PRETTY_FUNCTION__))
;
360 break;
361 }
362 return true;
363 }
364 return false;
365}
366
367
368/* 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)
14
Assuming field 'm_pBody' is non-null
15
Taking true branch
113 m_pBody->release();
16
Calling 'VclReferenceBase::release'
20
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)
17
Assuming the condition is true
18
Taking true branch
40 delete this;
19
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