/src/libreoffice/svtools/source/control/asynclink.cxx
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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 | | |
21 | | #include <svtools/asynclink.hxx> |
22 | | #include <tools/debug.hxx> |
23 | | #include <vcl/svapp.hxx> |
24 | | |
25 | | |
26 | | namespace svtools { |
27 | | |
28 | | void AsynchronLink::Call( void* pObj, bool bAllowDoubles ) |
29 | 87.1k | { |
30 | 87.1k | if( !_aLink.IsSet() ) |
31 | 78.6k | return; |
32 | | |
33 | 8.47k | _pArg = pObj; |
34 | 8.47k | DBG_ASSERT( bAllowDoubles || !_nEventId, "Already made a call" ); |
35 | 8.47k | ClearPendingCall(); |
36 | 8.47k | std::scoped_lock aGuard(_aMutex); |
37 | 8.47k | _nEventId = Application::PostUserEvent( LINK( this, AsynchronLink, HandleCall_PostUserEvent) ); |
38 | 8.47k | } |
39 | | |
40 | | AsynchronLink::~AsynchronLink() |
41 | 299k | { |
42 | 299k | if( _nEventId ) |
43 | 8.47k | { |
44 | 8.47k | Application::RemoveUserEvent( _nEventId ); |
45 | 8.47k | } |
46 | 299k | } |
47 | | |
48 | | void AsynchronLink::ClearPendingCall() |
49 | 378k | { |
50 | 378k | std::scoped_lock aGuard(_aMutex); |
51 | 378k | if( _nEventId ) |
52 | 0 | { |
53 | 0 | Application::RemoveUserEvent( _nEventId ); |
54 | 0 | _nEventId = nullptr; |
55 | 0 | } |
56 | 378k | } |
57 | | |
58 | | IMPL_LINK_NOARG( AsynchronLink, HandleCall_PostUserEvent, void*, void ) |
59 | 0 | { |
60 | 0 | { |
61 | 0 | std::scoped_lock aGuard(_aMutex); |
62 | 0 | _nEventId = nullptr; |
63 | | // need to release the lock before calling the client since |
64 | | // the client may call back into us |
65 | 0 | } |
66 | 0 | _aLink.Call( _pArg ); |
67 | 0 | } |
68 | | |
69 | | } |
70 | | |
71 | | /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |