mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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356 lines
16 KiB
C++
356 lines
16 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours.hpp>
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#include <stratosphere/sf/sf_common.hpp>
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#include <stratosphere/sf/impl/sf_impl_template_base.hpp>
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#include <stratosphere/sf/sf_object_impl_factory.hpp>
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#include <stratosphere/sf/sf_memory_resource.hpp>
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#include <stratosphere/sf/sf_default_allocation_policy.hpp>
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namespace ams::sf {
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namespace impl {
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template<typename>
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struct IsSmartPointer : public std::false_type{};
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template<typename T>
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struct IsSmartPointer<SharedPointer<T>> : public std::true_type{};
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template<typename T>
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struct IsSmartPointer<std::shared_ptr<T>> : public std::true_type{};
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template<typename T, typename D>
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struct IsSmartPointer<std::unique_ptr<T, D>> : public std::true_type{};
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template<typename Impl>
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struct UnmanagedEmplaceImplHolderBaseGetter {
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using Type = Impl;
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};
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template<typename Impl> requires (std::is_abstract<Impl>::value)
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struct UnmanagedEmplaceImplHolderBaseGetter<Impl> {
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class Impl2 : public Impl {
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public:
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using Impl::Impl;
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private:
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constexpr virtual void AddReference() override { /* ... */ }
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constexpr virtual void Release() override { /* ... */ }
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};
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using Type = Impl2;
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};
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template<typename Impl>
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class UnmanagedEmplacedImplHolder {
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template<typename, typename, typename, typename, typename>
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friend class impl::ImplTemplateBaseT;
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private:
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using Impl2 = typename UnmanagedEmplaceImplHolderBaseGetter<Impl>::Type;
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static_assert(!std::is_abstract<Impl2>::value);
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private:
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Impl2 m_impl;
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private:
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template<typename... Args>
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constexpr explicit UnmanagedEmplacedImplHolder(Args &&... args) : m_impl(std::forward<Args>(args)...) { /* ... */ }
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public:
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static constexpr Impl *GetImplPointer(UnmanagedEmplacedImplHolder *holder) {
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return std::addressof(holder->m_impl);
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}
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};
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template<typename Impl>
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class EmplacedImplHolder : private Impl {
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template<typename, typename, typename, typename, typename>
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friend class impl::ImplTemplateBaseT;
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private:
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template<typename... Args>
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constexpr explicit EmplacedImplHolder(Args &&... args) : Impl(std::forward<Args>(args)...) { /* ... */ }
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public:
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static constexpr Impl *GetImplPointer(EmplacedImplHolder *holder) {
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return holder;
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}
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template<typename Interface>
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static constexpr Impl *GetEmplacedImplPointerImpl(const SharedPointer<Interface> &sp) {
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using Base = impl::ImplTemplateBase<Interface, Interface, EmplacedImplHolder, EmplacedImplHolder>;
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return static_cast<Base *>(sp.Get());
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}
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};
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template<typename Impl> requires (IsSmartPointer<Impl>::value)
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class EmplacedImplHolder<Impl> : private Impl {
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template<typename, typename, typename, typename, typename>
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friend class impl::ImplTemplateBaseT;
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private:
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template<typename... Args>
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constexpr explicit EmplacedImplHolder(Args &&... args) : Impl(std::forward<Args>(args)...) { /* ... */ }
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public:
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static constexpr auto *GetImplPointer(EmplacedImplHolder *holder) {
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return static_cast<Impl *>(holder)->operator ->();
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}
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template<typename Interface>
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static constexpr Impl *GetEmplacedImplPointerImpl(const SharedPointer<Interface> &sp) {
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using Base = impl::ImplTemplateBase<Interface, Interface, EmplacedImplHolder, EmplacedImplHolder>;
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return static_cast<Base *>(sp.Get());
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}
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};
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template<typename T>
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using SmartPointerHolder = EmplacedImplHolder<T>;
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template<typename T>
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class ManagedPointerHolder {
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template<typename, typename, typename, typename, typename>
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friend class impl::ImplTemplateBaseT;
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private:
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T *m_p;
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private:
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constexpr explicit ManagedPointerHolder(T *p) : m_p(p) { /* ... */ }
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constexpr ~ManagedPointerHolder() { m_p->Release(); }
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static constexpr T *GetImplPointer(ManagedPointerHolder *holder) {
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return holder->m_p;
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}
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};
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template<typename T>
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class UnmanagedPointerHolder {
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template<typename, typename, typename, typename, typename>
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friend class impl::ImplTemplateBaseT;
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private:
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T *m_p;
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private:
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constexpr explicit UnmanagedPointerHolder(T *p) : m_p(p) { /* ... */ }
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static constexpr T *GetImplPointer(UnmanagedPointerHolder *holder) {
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return holder->m_p;
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}
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};
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}
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template<typename Interface, typename Impl>
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class UnmanagedServiceObject final : public impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedEmplacedImplHolder<Impl>, impl::UnmanagedEmplacedImplHolder<Impl>> {
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private:
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using ImplBase = impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedEmplacedImplHolder<Impl>, impl::UnmanagedEmplacedImplHolder<Impl>>;
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public:
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using ImplBase::ImplBase;
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constexpr virtual void AddReference() override { /* ... */ }
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constexpr virtual void Release() override { /* ... */ }
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constexpr Impl &GetImpl() { return *impl::UnmanagedEmplacedImplHolder<Impl>::GetImplPointer(this); }
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constexpr SharedPointer<Interface> GetShared() { return SharedPointer<Interface>(this, false); }
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};
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template<typename Interface, typename T>
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class UnmanagedServiceObjectByPointer final : public impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedPointerHolder<T>, impl::UnmanagedPointerHolder<T>> {
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private:
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using ImplBase = impl::ImplTemplateBase<Interface, Interface, impl::UnmanagedPointerHolder<T>, impl::UnmanagedPointerHolder<T>>;
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public:
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constexpr explicit UnmanagedServiceObjectByPointer(T *ptr) : ImplBase(ptr) { /* ... */ }
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constexpr virtual void AddReference() override { /* ... */ }
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constexpr virtual void Release() override { /* ... */ }
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constexpr SharedPointer<Interface> GetShared() { return SharedPointer<Interface>(this, false); }
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};
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template<typename Policy>
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class ObjectFactory;
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template<typename Interface, typename Impl>
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class EmplacedRef : public SharedPointer<Interface> {
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template<typename> friend class ObjectFactory;
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private:
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constexpr explicit EmplacedRef(Interface *ptr, bool incref) : SharedPointer<Interface>(ptr, incref) { /* ... */ }
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public:
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constexpr EmplacedRef() { /* ... */ }
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constexpr Impl &GetImpl() const {
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return *impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(*this);
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}
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};
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template<typename Policy> requires (!IsStatefulPolicy<Policy>)
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class ObjectFactory<Policy> {
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private:
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template<typename Interface, typename Holder, typename T>
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static constexpr SharedPointer<Interface> CreateSharedForPointer(T t) {
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using Base = impl::ImplTemplateBase<Interface, Interface, Holder, Holder>;
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return SharedPointer<Interface>(ObjectImplFactory<Base, Policy>::Create(std::forward<T>(t)), false);
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}
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public:
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template<typename Interface, typename Impl, typename... Args>
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static constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Args &&... args) {
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using Base = impl::ImplTemplateBase<Interface, Interface, impl::EmplacedImplHolder<Impl>, impl::EmplacedImplHolder<Impl>>;
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return EmplacedRef<Interface, Impl>(ObjectImplFactory<Base, Policy>::Create(std::forward<Args>(args)...), false);
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}
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template<typename T, typename... Args>
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static constexpr SharedPointer<T> CreateUserSharedObject(Args &&... args) {
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return SharedPointer<T>(ObjectImplFactory<T, Policy>::Create(std::forward<Args>(args)...), false);
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}
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template<typename Impl, typename Interface>
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static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
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return impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(sp);
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}
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template<typename Interface, typename Smart>
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static constexpr SharedPointer<Interface> CreateShared(Smart &&sp) {
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return CreateSharedForPointer<Interface, impl::SmartPointerHolder<typename std::decay<decltype(sp)>::type>>(std::forward<Smart>(sp));
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}
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template<typename Interface, typename T>
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static constexpr SharedPointer<Interface> CreateShared(T *p) {
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return CreateSharedForPointer<Interface, impl::ManagedPointerHolder<T>>(p);
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}
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template<typename Interface, typename T>
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static constexpr SharedPointer<Interface> CreateSharedWithoutManagement(T *p) {
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return CreateSharedForPointer<Interface, impl::UnmanagedPointerHolder<T>>(p);
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}
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};
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template<typename Policy> requires (IsStatefulPolicy<Policy>)
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class ObjectFactory<Policy> {
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public:
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using Allocator = typename Policy::Allocator;
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private:
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template<typename Interface, typename Holder, typename T>
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static constexpr SharedPointer<Interface> CreateSharedForPointer(Allocator *a, T t) {
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using Base = impl::ImplTemplateBase<Interface, Interface, Holder, Holder>;
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return SharedPointer<Interface>(ObjectImplFactory<Base, Policy>::Create(a, std::forward<T>(t)), false);
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}
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public:
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template<typename Interface, typename Impl, typename... Args>
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static constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Allocator *a, Args &&... args) {
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using Base = impl::ImplTemplateBase<Interface, Interface, impl::EmplacedImplHolder<Impl>, impl::EmplacedImplHolder<Impl>>;
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return EmplacedRef<Interface, Impl>(ObjectImplFactory<Base, Policy>::Create(a, std::forward<Args>(args)...), false);
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}
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template<typename T, typename... Args>
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static constexpr SharedPointer<T> CreateUserSharedObject(Allocator *a, Args &&... args) {
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return SharedPointer<T>(ObjectImplFactory<T, Policy>::Create(a, std::forward<Args>(args)...), false);
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}
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template<typename Impl, typename Interface>
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static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
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return impl::EmplacedImplHolder<Impl>::template GetEmplacedImplPointerImpl<Interface>(sp);
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}
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template<typename Interface, typename Smart>
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static constexpr SharedPointer<Interface> CreateShared(Allocator *a, Smart &&sp) {
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return CreateSharedForPointer<Interface, impl::SmartPointerHolder<typename std::decay<decltype(sp)>::type>>(a, std::forward<Smart>(sp));
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}
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template<typename Interface, typename T>
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static constexpr SharedPointer<Interface> CreateShared(Allocator *a, T *p) {
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return CreateSharedForPointer<Interface, impl::ManagedPointerHolder<T>>(a, p);
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}
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template<typename Interface, typename T>
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static constexpr SharedPointer<Interface> CreateSharedWithoutManagement(Allocator *a, T *p) {
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return CreateSharedForPointer<Interface, impl::UnmanagedPointerHolder<T>>(a, p);
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}
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};
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template<typename Policy>
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class StatefulObjectFactory {
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public:
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using Allocator = typename Policy::Allocator;
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private:
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using StaticObjectFactory = ObjectFactory<Policy>;
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private:
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Allocator *m_allocator;
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public:
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constexpr explicit StatefulObjectFactory(Allocator *a) : m_allocator(a) { /* ... */ }
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template<typename Interface, typename Impl, typename... Args>
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constexpr EmplacedRef<Interface, Impl> CreateSharedEmplaced(Args &&... args) {
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return StaticObjectFactory::template CreateSharedEmplaced<Interface, Impl>(m_allocator, std::forward<Args>(args)...);
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}
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template<typename Impl, typename Interface>
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static constexpr Impl *GetEmplacedImplPointer(const SharedPointer<Interface> &sp) {
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return StaticObjectFactory::template GetEmplacedImplPointer<Impl, Interface>(sp);
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}
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template<typename Interface, typename Smart>
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constexpr SharedPointer<Interface> CreateShared(Allocator *a, Smart &&sp) {
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AMS_UNUSED(a);
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return StaticObjectFactory::template CreateShared<Interface>(m_allocator, std::forward<Smart>(sp));
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}
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template<typename Interface, typename T>
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constexpr SharedPointer<Interface> CreateShared(Allocator *a, T *p) {
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AMS_UNUSED(a);
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return StaticObjectFactory::template CreateShared<Interface>(m_allocator, p);
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}
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template<typename Interface, typename T>
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constexpr SharedPointer<Interface> CreateSharedWithoutManagement(Allocator *a, T *p) {
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AMS_UNUSED(a);
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return StaticObjectFactory::template CreateSharedWithoutManagement<Interface>(m_allocator, p);
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}
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};
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using DefaultObjectFactory = ObjectFactory<DefaultAllocationPolicy>;
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using MemoryResourceObjectFactory = ObjectFactory<MemoryResourceAllocationPolicy>;
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template<typename Interface, typename Impl, typename... Args>
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inline EmplacedRef<Interface, Impl> CreateSharedObjectEmplaced(Args &&... args) {
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return DefaultObjectFactory::CreateSharedEmplaced<Interface, Impl>(std::forward<Args>(args)...);
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}
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template<typename Interface, typename Impl, typename... Args>
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inline EmplacedRef<Interface, Impl> CreateSharedObjectEmplaced(MemoryResource *mr, Args &&... args) {
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return MemoryResourceObjectFactory::CreateSharedEmplaced<Interface, Impl>(mr, std::forward<Args>(args)...);
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}
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template<typename Interface, typename Smart>
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inline SharedPointer<Interface> CreateSharedObject(Smart &&sp) {
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return DefaultObjectFactory::CreateShared<Interface, Smart>(std::forward<Smart>(sp));
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}
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template<typename Interface, typename Smart>
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inline SharedPointer<Interface> CreateSharedObject(MemoryResource *mr, Smart &&sp) {
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return MemoryResourceObjectFactory::CreateShared<Interface, Smart>(mr, std::forward<Smart>(sp));
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}
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template<typename Interface, typename T>
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inline SharedPointer<Interface> CreateSharedObject(T *ptr) {
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return DefaultObjectFactory::CreateShared<Interface, T>(std::move(ptr));
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}
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template<typename Interface, typename T>
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inline SharedPointer<Interface> CreateSharedObjectWithoutManagement(T *ptr) {
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return DefaultObjectFactory::CreateSharedWithoutManagement<Interface, T>(std::move(ptr));
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}
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template<typename Interface, typename T>
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inline SharedPointer<Interface> CreateSharedObjectWithoutManagement(MemoryResource *mr, T *ptr) {
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return DefaultObjectFactory::CreateSharedWithoutManagement<Interface, T>(mr, std::move(ptr));
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}
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}
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