63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
/*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Copyright 2015 Danny Robson <danny@nerdcruft.net>
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*/
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#ifdef __UTIL_ALLOC_ARENA_IPP
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#error
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#endif
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#define __UTIL_ALLOC_ARENA_IPP
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///////////////////////////////////////////////////////////////////////////////
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template <class T>
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util::alloc::arena<T>::arena (T &store):
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m_store (store)
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{ ; }
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///////////////////////////////////////////////////////////////////////////////
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template <class T>
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template <typename U, typename ...Args>
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U*
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util::alloc::arena<T>::acquire (Args&& ...args)
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{
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U *data = reinterpret_cast<U*> (
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m_store.allocate (sizeof (U), alignof (U))
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);
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try {
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new (data) U (std::forward<Args> (args)...);
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} catch (...) {
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m_store.deallocate (data, sizeof (U));
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throw;
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}
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return data;
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}
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//-----------------------------------------------------------------------------
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template <class T>
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template <typename U>
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void
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util::alloc::arena<T>::release (U *u)
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{
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u->~U ();
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m_store.deallocate (reinterpret_cast<void*> (u), sizeof (U));
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}
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