1*cdf0e10cSrcweir /************************************************************************* 2*cdf0e10cSrcweir * 3*cdf0e10cSrcweir * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4*cdf0e10cSrcweir * 5*cdf0e10cSrcweir * Copyright 2000, 2010 Oracle and/or its affiliates. 6*cdf0e10cSrcweir * 7*cdf0e10cSrcweir * OpenOffice.org - a multi-platform office productivity suite 8*cdf0e10cSrcweir * 9*cdf0e10cSrcweir * This file is part of OpenOffice.org. 10*cdf0e10cSrcweir * 11*cdf0e10cSrcweir * OpenOffice.org is free software: you can redistribute it and/or modify 12*cdf0e10cSrcweir * it under the terms of the GNU Lesser General Public License version 3 13*cdf0e10cSrcweir * only, as published by the Free Software Foundation. 14*cdf0e10cSrcweir * 15*cdf0e10cSrcweir * OpenOffice.org is distributed in the hope that it will be useful, 16*cdf0e10cSrcweir * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*cdf0e10cSrcweir * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*cdf0e10cSrcweir * GNU Lesser General Public License version 3 for more details 19*cdf0e10cSrcweir * (a copy is included in the LICENSE file that accompanied this code). 20*cdf0e10cSrcweir * 21*cdf0e10cSrcweir * You should have received a copy of the GNU Lesser General Public License 22*cdf0e10cSrcweir * version 3 along with OpenOffice.org. If not, see 23*cdf0e10cSrcweir * <http://www.openoffice.org/license.html> 24*cdf0e10cSrcweir * for a copy of the LGPLv3 License. 25*cdf0e10cSrcweir * 26*cdf0e10cSrcweir ************************************************************************/ 27*cdf0e10cSrcweir 28*cdf0e10cSrcweir #ifndef DBAUI_ASYNCRONOUSLINK_HXX 29*cdf0e10cSrcweir #define DBAUI_ASYNCRONOUSLINK_HXX 30*cdf0e10cSrcweir 31*cdf0e10cSrcweir #include <tools/link.hxx> 32*cdf0e10cSrcweir #include <osl/mutex.hxx> 33*cdf0e10cSrcweir 34*cdf0e10cSrcweir namespace dbaui 35*cdf0e10cSrcweir { 36*cdf0e10cSrcweir // ========================================================================= 37*cdf0e10cSrcweir // a helper for multi-threaded handling of async events 38*cdf0e10cSrcweir // ------------------------------------------------------------------------- 39*cdf0e10cSrcweir /** handles asynchronous links which may be called in multi-threaded environments 40*cdf0e10cSrcweir If you use an instance of this class as member of your own class, it will handle 41*cdf0e10cSrcweir several crucial points for you (for instance the case that somebody posts the 42*cdf0e10cSrcweir event while another thread tries to delete this event in the _destructor_ of the 43*cdf0e10cSrcweir class). 44*cdf0e10cSrcweir */ 45*cdf0e10cSrcweir class OAsyncronousLink 46*cdf0e10cSrcweir { 47*cdf0e10cSrcweir Link m_aHandler; 48*cdf0e10cSrcweir 49*cdf0e10cSrcweir protected: 50*cdf0e10cSrcweir ::osl::Mutex m_aEventSafety; 51*cdf0e10cSrcweir ::osl::Mutex m_aDestructionSafety; 52*cdf0e10cSrcweir sal_uLong m_nEventId; 53*cdf0e10cSrcweir 54*cdf0e10cSrcweir public: 55*cdf0e10cSrcweir /** constructs the object 56*cdf0e10cSrcweir @param _rHandler The link to be called asyncronously 57*cdf0e10cSrcweir */ 58*cdf0e10cSrcweir OAsyncronousLink( const Link& _rHandler ); 59*cdf0e10cSrcweir virtual ~OAsyncronousLink(); 60*cdf0e10cSrcweir 61*cdf0e10cSrcweir bool IsRunning() const { return m_nEventId != 0; } 62*cdf0e10cSrcweir 63*cdf0e10cSrcweir void Call( void* _pArgument = NULL ); 64*cdf0e10cSrcweir void CancelCall(); 65*cdf0e10cSrcweir 66*cdf0e10cSrcweir protected: 67*cdf0e10cSrcweir DECL_LINK(OnAsyncCall, void*); 68*cdf0e10cSrcweir }; 69*cdf0e10cSrcweir } 70*cdf0e10cSrcweir #endif // DBAUI_ASYNCRONOUSLINK_HXX 71*cdf0e10cSrcweir 72