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https://gitlab.uni-freiburg.de/opensourcevdi/spice
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435ea33540
This allows the compiler to do some more optimisations on the produced binary. To allows possible future portability include header/footer in some helper header files. Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
100 lines
2.0 KiB
C++
100 lines
2.0 KiB
C++
/*
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Copyright (C) 2019 Red Hat, Inc.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* Generic utilities for C++
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*/
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#pragma once
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#include <memory>
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#include "push-visibility.h"
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namespace red {
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template <typename T>
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inline T* add_ref(T* p)
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{
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if (p) {
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p->ref();
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}
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return p;
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}
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/* Smart pointer allocated once
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*
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* It just keep the pointer passed to constructor and delete
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* the object in the destructor. No copy or move allowed.
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* Very easy but make sure we don't change it and that's
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* initialized.
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*/
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template <typename T>
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class unique_link
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{
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public:
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unique_link(): p(new T())
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{
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}
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unique_link(T* p): p(p)
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{
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}
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~unique_link()
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{
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delete p;
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}
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T* operator->() noexcept
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{
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return p;
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}
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const T* operator->() const noexcept
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{
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return p;
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}
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private:
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T *const p;
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unique_link(const unique_link&)=delete;
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void operator=(const unique_link&)=delete;
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};
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template <typename T>
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struct GLibDeleter {
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void operator()(T* p)
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{
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g_free(p);
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}
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};
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template <typename T>
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using glib_unique_ptr = std::unique_ptr<T, GLibDeleter<T>>;
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/* Returns the size of an array.
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* Introduced in C++17 but lacking in C++11
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*/
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template <class T, size_t N>
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constexpr size_t size(const T (&array)[N]) noexcept
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{
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return N;
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}
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} // namespace red
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#include "pop-visibility.h"
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