3
0
mirror of https://github.com/triqs/dft_tools synced 2024-12-25 13:53:40 +01:00
dft_tools/triqs/utility/scope_guard.hpp
Olivier Parcollet 800aea4c5e remove workaround for icc 13.0
- deprecated....
- remove the TRIQS_WORKAROUND_INTEL_COMPILER_BUGS macro
2013-10-17 00:32:09 +02:00

46 lines
1.7 KiB
C++

/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2012 by M. Ferrero, O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#ifndef TRIQS_UTILITY_SCOPE_GUARD_H
#define TRIQS_UTILITY_SCOPE_GUARD_H
namespace triqs { namespace utility {
// adapted from A. Alexandrescu talk, C++ & beyond 2013.
template <class Fun>
class scope_guard {
Fun f_;
bool active_;
public:
scope_guard(Fun f) : f_(std::move(f)) , active_(true) {}
~scope_guard() { if (active_) f_(); }
void dismiss() { active_ = false; }
bool active() const { return active_;}
scope_guard() = delete;
scope_guard(const scope_guard&) = delete;
scope_guard(scope_guard&& rhs) : f_(std::move(rhs.f_)) , active_(rhs.active_) { rhs.dismiss(); }
scope_guard& operator=(const scope_guard&) = delete;
scope_guard& operator=(scope_guard&& rhs) { using std::swap; swap(f_,rhs.f_); swap(active_, rhs.active_); return *this;}
};
template <class Fun> scope_guard<Fun> scopeGuard(Fun f) { return scope_guard<Fun>(std::move(f)); }
}}
#endif