48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef _CANCELCHECK_H_INCLUDED_
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#define _CANCELCHECK_H_INCLUDED_
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/* @(#$Id: cancelcheck.h,v 1.2 2006-01-30 11:15:28 dockes Exp $ (C) 2005 J.F.Dockes */
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class CancelExcept {};
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class CancelCheck {
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public:
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static CancelCheck& instance() {
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static CancelCheck ck;
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return ck;
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}
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void setCancel(bool on = true) {
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cancelRequested = on;
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}
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void checkCancel() {
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if (cancelRequested) {
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cancelRequested = false;
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throw CancelExcept();
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}
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}
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private:
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bool cancelRequested;
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CancelCheck() : cancelRequested(false) {}
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CancelCheck& operator=(CancelCheck&);
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CancelCheck(const CancelCheck&);
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};
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#endif /* _CANCELCHECK_H_INCLUDED_ */
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