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 viewutil.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 SC_DLLIMPLEMENTATION -D SC_INFO_OSVERSION="LINUX" -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/mdds/include -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/i18n -I /home/maarten/src/libreoffice/core/workdir/UnpackedTarball/icu/source/common -I /home/maarten/src/libreoffice/core/external/clew/source/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/sc/source/core/inc -I /home/maarten/src/libreoffice/core/sc/source/filter/inc -I /home/maarten/src/libreoffice/core/sc/source/ui/inc -I /home/maarten/src/libreoffice/core/sc/inc -I /home/maarten/src/libreoffice/core/workdir/SdiTarget/sc/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 -I /home/maarten/src/libreoffice/core/workdir/UnoApiHeadersTarget/oovbaapi/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/sc/source/ui/view/viewutil.cxx

/home/maarten/src/libreoffice/core/sc/source/ui/view/viewutil.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 <scitems.hxx>
21#include <sfx2/bindings.hxx>
22#include <sfx2/viewsh.hxx>
23#include <sfx2/dispatch.hxx>
24#include <editeng/fontitem.hxx>
25#include <editeng/langitem.hxx>
26#include <editeng/scripttypeitem.hxx>
27#include <svl/itempool.hxx>
28#include <svl/itemset.hxx>
29#include <svl/cjkoptions.hxx>
30#include <svl/ctloptions.hxx>
31#include <vcl/svapp.hxx>
32#include <vcl/settings.hxx>
33#include <vcl/window.hxx>
34#include <sfx2/objsh.hxx>
35#include <sfx2/viewfrm.hxx>
36#include <svl/eitem.hxx>
37#include <osl/diagnose.h>
38
39#include <viewutil.hxx>
40#include <chgtrack.hxx>
41#include <chgviset.hxx>
42#include <markdata.hxx>
43#include <document.hxx>
44
45#include <svx/svxdlg.hxx>
46#include <svx/svxids.hrc>
47#include <memory>
48
49void ScViewUtil::PutItemScript( SfxItemSet& rShellSet, const SfxItemSet& rCoreSet,
50 sal_uInt16 nWhichId, SvtScriptType nScript )
51{
52 // take the effective item from rCoreSet according to nScript
53 // and put in rShellSet under the (base) nWhichId
54
55 SfxItemPool& rPool = *rShellSet.GetPool();
56 SvxScriptSetItem aSetItem( rPool.GetSlotId(nWhichId), rPool );
57 // use PutExtended with eDefaultAs = SfxItemState::SET, so defaults from rCoreSet
58 // (document pool) are read and put into rShellSet (MessagePool)
59 aSetItem.GetItemSet().PutExtended( rCoreSet, SfxItemState::DONTCARE, SfxItemState::SET );
60 const SfxPoolItem* pI = aSetItem.GetItemOfScript( nScript );
61 if (pI)
62 {
63 rShellSet.Put( pI->CloneSetWhich(nWhichId) );
64 }
65 else
66 rShellSet.InvalidateItem( nWhichId );
67}
68
69LanguageType ScViewUtil::GetEffLanguage( ScDocument& rDoc, const ScAddress& rPos )
70{
71 // used for thesaurus
72
73 SvtScriptType nScript = rDoc.GetScriptType(rPos.Col(), rPos.Row(), rPos.Tab());
74 sal_uInt16 nWhich = ( nScript == SvtScriptType::ASIAN ) ? ATTR_CJK_FONT_LANGUAGE :
75 ( ( nScript == SvtScriptType::COMPLEX ) ? ATTR_CTL_FONT_LANGUAGE : ATTR_FONT_LANGUAGE );
76 const SfxPoolItem* pItem = rDoc.GetAttr( rPos.Col(), rPos.Row(), rPos.Tab(), nWhich);
77 const SvxLanguageItem* pLangIt = dynamic_cast<const SvxLanguageItem*>( pItem );
78 LanguageType eLnge;
79 if (pLangIt)
80 {
81 eLnge = pLangIt->GetValue();
82 if (eLnge == LANGUAGE_DONTKNOWLanguageType(0x03FF)) //! can this happen?
83 {
84 LanguageType eLatin, eCjk, eCtl;
85 rDoc.GetLanguage( eLatin, eCjk, eCtl );
86 eLnge = ( nScript == SvtScriptType::ASIAN ) ? eCjk :
87 ( ( nScript == SvtScriptType::COMPLEX ) ? eCtl : eLatin );
88 }
89 }
90 else
91 eLnge = LANGUAGE_ENGLISH_USLanguageType(0x0409);
92 if ( eLnge == LANGUAGE_SYSTEMLanguageType(0x0000) )
93 eLnge = Application::GetSettings().GetLanguageTag().getLanguageType(); // never use SYSTEM for spelling
94
95 return eLnge;
96}
97
98TransliterationFlags ScViewUtil::GetTransliterationType( sal_uInt16 nSlotID )
99{
100 TransliterationFlags nType = TransliterationFlags::NONE;
101 switch ( nSlotID )
102 {
103 case SID_TRANSLITERATE_SENTENCE_CASE( 10000 + 1102 ):
104 nType = TransliterationFlags::SENTENCE_CASE;
105 break;
106 case SID_TRANSLITERATE_TITLE_CASE( 10000 + 1103 ):
107 nType = TransliterationFlags::TITLE_CASE;
108 break;
109 case SID_TRANSLITERATE_TOGGLE_CASE( 10000 + 1104 ):
110 nType = TransliterationFlags::TOGGLE_CASE;
111 break;
112 case SID_TRANSLITERATE_UPPER( 10000 + 912 ):
113 nType = TransliterationFlags::LOWERCASE_UPPERCASE;
114 break;
115 case SID_TRANSLITERATE_LOWER( 10000 + 913 ):
116 nType = TransliterationFlags::UPPERCASE_LOWERCASE;
117 break;
118 case SID_TRANSLITERATE_HALFWIDTH( 10000 + 914 ):
119 nType = TransliterationFlags::FULLWIDTH_HALFWIDTH;
120 break;
121 case SID_TRANSLITERATE_FULLWIDTH( 10000 + 915 ):
122 nType = TransliterationFlags::HALFWIDTH_FULLWIDTH;
123 break;
124 case SID_TRANSLITERATE_HIRAGANA( 10000 + 916 ):
125 nType = TransliterationFlags::KATAKANA_HIRAGANA;
126 break;
127 case SID_TRANSLITERATE_KATAKANA( 10000 + 917 ):
128 nType = TransliterationFlags::HIRAGANA_KATAKANA;
129 break;
130 }
131 return nType;
132}
133
134bool ScViewUtil::IsActionShown( const ScChangeAction& rAction,
135 const ScChangeViewSettings& rSettings,
136 ScDocument& rDocument )
137{
138 // discarded are displayed as inverted accepted action, because of this
139 // order of ShowRejected/ShowAccepted is important
140
141 if ( !rSettings.IsShowRejected() && rAction.IsRejecting() )
142 return false;
143
144 if ( !rSettings.IsShowAccepted() && rAction.IsAccepted() && !rAction.IsRejecting() )
145 return false;
146
147 if ( rSettings.HasAuthor() && rAction.GetUser() != rSettings.GetTheAuthorToShow() )
148 return false;
149
150 if ( rSettings.HasComment() )
151 {
152 OUString aTmp;
153 rAction.GetDescription(aTmp, rDocument);
154 OUString aComStr = rAction.GetComment() + " (" + aTmp + ")";
155
156 if(!rSettings.IsValidComment(&aComStr))
157 return false;
158 }
159
160 if ( rSettings.HasRange() )
161 if ( !rSettings.GetTheRangeList().Intersects( rAction.GetBigRange().MakeRange() ) )
162 return false;
163
164 if (rSettings.HasDate() && rSettings.GetTheDateMode() != SvxRedlinDateMode::NONE)
165 {
166 DateTime aDateTime = rAction.GetDateTime();
167 const DateTime& rFirst = rSettings.GetTheFirstDateTime();
168 const DateTime& rLast = rSettings.GetTheLastDateTime();
169 switch ( rSettings.GetTheDateMode() )
170 { // corresponds with ScHighlightChgDlg::OKBtnHdl
171 case SvxRedlinDateMode::BEFORE:
172 if ( aDateTime > rFirst )
173 return false;
174 break;
175
176 case SvxRedlinDateMode::SINCE:
177 if ( aDateTime < rFirst )
178 return false;
179 break;
180
181 case SvxRedlinDateMode::EQUAL:
182 case SvxRedlinDateMode::BETWEEN:
183 if ( aDateTime < rFirst || aDateTime > rLast )
184 return false;
185 break;
186
187 case SvxRedlinDateMode::NOTEQUAL:
188 if ( aDateTime >= rFirst && aDateTime <= rLast )
189 return false;
190 break;
191
192 case SvxRedlinDateMode::SAVE:
193 {
194 ScChangeTrack* pTrack = rDocument.GetChangeTrack();
195 if ( !pTrack || pTrack->GetLastSavedActionNumber() >=
196 rAction.GetActionNumber() )
197 return false;
198 }
199 break;
200
201 default:
202 {
203 // added to avoid warnings
204 }
205 }
206 }
207
208 if ( rSettings.HasActionRange() )
209 {
210 sal_uLong nAction = rAction.GetActionNumber();
211 sal_uLong nFirstAction;
212 sal_uLong nLastAction;
213 rSettings.GetTheActionRange( nFirstAction, nLastAction );
214 if ( nAction < nFirstAction || nAction > nLastAction )
215 {
216 return false;
217 }
218 }
219
220 return true;
221}
222
223void ScViewUtil::UnmarkFiltered( ScMarkData& rMark, const ScDocument& rDoc )
224{
225 rMark.MarkToMulti();
226
227 ScRange aMultiArea;
228 rMark.GetMultiMarkArea( aMultiArea );
229 SCCOL nStartCol = aMultiArea.aStart.Col();
230 SCROW nStartRow = aMultiArea.aStart.Row();
231 SCCOL nEndCol = aMultiArea.aEnd.Col();
232 SCROW nEndRow = aMultiArea.aEnd.Row();
233
234 bool bChanged = false;
235 for (const SCTAB& nTab : rMark)
236 {
237 for (SCROW nRow = nStartRow; nRow <= nEndRow; ++nRow)
238 {
239 SCROW nLastRow = nRow;
240 if (rDoc.RowFiltered(nRow, nTab, nullptr, &nLastRow))
241 {
242 // use nStartCol/nEndCol, so the multi mark area isn't extended to all columns
243 // (visible in repaint for indentation)
244 rMark.SetMultiMarkArea(
245 ScRange(nStartCol, nRow, nTab, nEndCol, nLastRow, nTab), false);
246 bChanged = true;
247 nRow = nLastRow;
248 }
249 }
250 }
251
252 if ( bChanged && !rMark.HasAnyMultiMarks() )
253 rMark.ResetMark();
254
255 rMark.MarkToSimple();
256}
257
258bool ScViewUtil::FitToUnfilteredRows( ScRange & rRange, const ScDocument& rDoc, size_t nRows )
259{
260 SCTAB nTab = rRange.aStart.Tab();
261 bool bOneTabOnly = (nTab == rRange.aEnd.Tab());
262 // Always fit the range on its first sheet.
263 OSL_ENSURE( bOneTabOnly, "ScViewUtil::ExtendToUnfilteredRows: works only on one sheet")do { if (true && (!(bOneTabOnly))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/sc/source/ui/view/viewutil.cxx"
":" "263" ": "), "%s", "ScViewUtil::ExtendToUnfilteredRows: works only on one sheet"
); } } while (false);
264 SCROW nStartRow = rRange.aStart.Row();
265 SCROW nLastRow = rDoc.LastNonFilteredRow(nStartRow, rDoc.MaxRow(), nTab);
266 if (rDoc.ValidRow(nLastRow))
267 rRange.aEnd.SetRow(nLastRow);
268 SCROW nCount = rDoc.CountNonFilteredRows(nStartRow, rDoc.MaxRow(), nTab);
269 return static_cast<size_t>(nCount) == nRows && bOneTabOnly;
270}
271
272bool ScViewUtil::HasFiltered( const ScRange& rRange, const ScDocument& rDoc )
273{
274 SCROW nStartRow = rRange.aStart.Row();
275 SCROW nEndRow = rRange.aEnd.Row();
276 for (SCTAB nTab=rRange.aStart.Tab(); nTab<=rRange.aEnd.Tab(); nTab++)
277 {
278 if (rDoc.HasFilteredRows(nStartRow, nEndRow, nTab))
279 return true;
280 }
281
282 return false;
283}
284
285void ScViewUtil::HideDisabledSlot( SfxItemSet& rSet, SfxBindings& rBindings, sal_uInt16 nSlotId )
286{
287 SvtCJKOptions aCJKOptions;
288 SvtCTLOptions aCTLOptions;
289 bool bEnabled = true;
290
291 switch( nSlotId )
292 {
293 case SID_CHINESE_CONVERSION( 10000 + 1016 ):
294 case SID_HANGUL_HANJA_CONVERSION( 10000 + 959 ):
295 bEnabled = aCJKOptions.IsAnyEnabled();
296 break;
297
298 case SID_TRANSLITERATE_HALFWIDTH( 10000 + 914 ):
299 case SID_TRANSLITERATE_FULLWIDTH( 10000 + 915 ):
300 case SID_TRANSLITERATE_HIRAGANA( 10000 + 916 ):
301 case SID_TRANSLITERATE_KATAKANA( 10000 + 917 ):
302 bEnabled = aCJKOptions.IsChangeCaseMapEnabled();
303 break;
304
305 case SID_INSERT_RLM( 10000 + 1056 ):
306 case SID_INSERT_LRM( 10000 + 1057 ):
307 bEnabled = aCTLOptions.IsCTLFontEnabled();
308 break;
309
310 default:
311 OSL_FAIL( "ScViewUtil::HideDisabledSlot - unknown slot ID" )do { if (true && (((sal_Bool)1))) { sal_detail_logFormat
((SAL_DETAIL_LOG_LEVEL_WARN), ("legacy.osl"), ("/home/maarten/src/libreoffice/core/sc/source/ui/view/viewutil.cxx"
":" "311" ": "), "%s", "ScViewUtil::HideDisabledSlot - unknown slot ID"
); } } while (false);
312 return;
313 }
314
315 rBindings.SetVisibleState( nSlotId, bEnabled );
316 if( !bEnabled )
317 rSet.DisableItem( nSlotId );
318}
319
320void ScViewUtil::ExecuteCharMap( const SvxFontItem& rOldFont,
321 SfxViewFrame& rFrame )
322{
323 SvxAbstractDialogFactory* pFact = SvxAbstractDialogFactory::Create();
324 SfxAllItemSet aSet( rFrame.GetObjectShell()->GetPool() );
325 aSet.Put( SfxBoolItem( FN_PARAM_1((20000 + 1100)+60), false ) );
326 aSet.Put( SvxFontItem( rOldFont.GetFamily(), rOldFont.GetFamilyName(), rOldFont.GetStyleName(), rOldFont.GetPitch(), rOldFont.GetCharSet(), aSet.GetPool()->GetWhich( SID_ATTR_CHAR_FONT( 10000 + 7 ) ) ) );
327 auto xFrame = rFrame.GetFrame().GetFrameInterface();
328 ScopedVclPtr<SfxAbstractDialog> pDlg(pFact->CreateCharMapDialog(rFrame.GetWindow().GetFrameWeld(), aSet, xFrame));
1
Calling constructor for 'ScopedVclPtr<SfxAbstractDialog>'
→
8
←
Returning from constructor for 'ScopedVclPtr<SfxAbstractDialog>'
→
9
←
Calling implicit destructor for 'VclPtr<SfxAbstractDialog>'
→
10
←
Calling '~Reference'
→
17
←
Returning from '~Reference'
→
18
←
Returning from destructor for 'VclPtr<SfxAbstractDialog>'
→
329 pDlg->Execute();
19
←
Calling 'VclPtr::operator->'
→
330}
331
332bool ScViewUtil::IsFullScreen( const SfxViewShell& rViewShell )
333{
334 SfxBindings& rBindings = rViewShell.GetViewFrame()->GetBindings();
335 std::unique_ptr<SfxPoolItem> pItem;
336 bool bIsFullScreen = false;
337
338 if (rBindings.QueryState( SID_WIN_FULLSCREEN(5000 + 627), pItem ) >= SfxItemState::DEFAULT)
339 bIsFullScreen = static_cast< SfxBoolItem* >( pItem.get() )->GetValue();
340
341 return bIsFullScreen;
342}
343
344void ScViewUtil::SetFullScreen( const SfxViewShell& rViewShell, bool bSet )
345{
346 if( IsFullScreen( rViewShell ) != bSet )
347 {
348 SfxBoolItem aItem( SID_WIN_FULLSCREEN(5000 + 627), bSet );
349 rViewShell.GetDispatcher()->ExecuteList(SID_WIN_FULLSCREEN(5000 + 627),
350 SfxCallMode::RECORD, { &aItem });
351 }
352}
353
354ScUpdateRect::ScUpdateRect( SCCOL nX1, SCROW nY1, SCCOL nX2, SCROW nY2 )
355 : nNewStartX(0)
356 , nNewStartY(0)
357 , nNewEndX(0)
358 , nNewEndY(0)
359{
360 PutInOrder( nX1, nX2 );
361 PutInOrder( nY1, nY2 );
362
363 nOldStartX = nX1;
364 nOldStartY = nY1;
365 nOldEndX = nX2;
366 nOldEndY = nY2;
367}
368
369void ScUpdateRect::SetNew( SCCOL nX1, SCROW nY1, SCCOL nX2, SCROW nY2 )
370{
371 PutInOrder( nX1, nX2 );
372 PutInOrder( nY1, nY2 );
373
374 nNewStartX = nX1;
375 nNewStartY = nY1;
376 nNewEndX = nX2;
377 nNewEndY = nY2;
378}
379
380bool ScUpdateRect::GetDiff( SCCOL& rX1, SCROW& rY1, SCCOL& rX2, SCROW& rY2 )
381{
382 if ( nNewStartX == nOldStartX && nNewEndX == nOldEndX &&
383 nNewStartY == nOldStartY && nNewEndY == nOldEndY )
384 {
385 rX1 = nNewStartX;
386 rY1 = nNewStartY;
387 rX2 = nNewStartX;
388 rY2 = nNewStartY;
389 return false;
390 }
391
392 rX1 = std::min(nNewStartX,nOldStartX);
393 rY1 = std::min(nNewStartY,nOldStartY);
394 rX2 = std::max(nNewEndX,nOldEndX);
395 rY2 = std::max(nNewEndY,nOldEndY);
396
397 if ( nNewStartX == nOldStartX && nNewEndX == nOldEndX )
398 {
399 if ( nNewStartY == nOldStartY )
400 {
401 rY1 = std::min( nNewEndY, nOldEndY );
402 rY2 = std::max( nNewEndY, nOldEndY );
403 }
404 else if ( nNewEndY == nOldEndY )
405 {
406 rY1 = std::min( nNewStartY, nOldStartY );
407 rY2 = std::max( nNewStartY, nOldStartY );
408 }
409 }
410 else if ( nNewStartY == nOldStartY && nNewEndY == nOldEndY )
411 {
412 if ( nNewStartX == nOldStartX )
413 {
414 rX1 = std::min( nNewEndX, nOldEndX );
415 rX2 = std::max( nNewEndX, nOldEndX );
416 }
417 else if ( nNewEndX == nOldEndX )
418 {
419 rX1 = std::min( nNewStartX, nOldStartX );
420 rX2 = std::max( nNewStartX, nOldStartX );
421 }
422 }
423
424 return true;
425}
426
427/* 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();
20
←
Calling 'Reference::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);
204 m_rInnerRef.clear(); // we should use some 'swap' method ideally ;-)
205 if (aTmp.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)
2
←
Calling implicit copy constructor for 'VclPtr<SfxAbstractDialog>'
→
3
←
Calling copy constructor for 'Reference<SfxAbstractDialog>'
→
6
←
Returning from copy constructor for 'Reference<SfxAbstractDialog>'
→
7
←
Returning from copy constructor for 'VclPtr<SfxAbstractDialog>'
→
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)
4
←
Assuming field 'm_pBody' is non-null
→
5
←
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
10.1
Field 'm_pBody' is non-null
10.1
Field 'm_pBody' is non-null
10.1
Field 'm_pBody' is non-null
10.1
Field 'm_pBody' is non-null
)
11
←
Taking true branch
→
113 m_pBody->release();
12
←
Calling 'VclReferenceBase::release'
→
16
←
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;
21
←
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)
13
←
Assuming the condition is true
→
14
←
Taking true branch
→
40 delete this;
15
←
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