ddsf: implement namespace

libraries/libstratosphere/include/stratosphere/ddsf/ddsf_device_code_entry.hpp

@@ -0,0 +1,110 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours.hpp>
+
+namespace ams::ddsf {
+
+    class IDevice;
+
+    class DeviceCodeEntry {
+        NON_COPYABLE(DeviceCodeEntry);
+        NON_MOVEABLE(DeviceCodeEntry);
+        private:
+            ams::DeviceCode device_code = ams::InvalidDeviceCode;
+            IDevice *device = nullptr;
+        public:
+            constexpr DeviceCodeEntry(ams::DeviceCode dc, IDevice *dev) : device_code(dc), device(dev) {
+                AMS_ASSERT(dev != nullptr);
+            }
+
+            constexpr ams::DeviceCode GetDeviceCode() const {
+                return this->device_code;
+            }
+
+            constexpr IDevice &GetDevice() {
+                return *this->device;
+            }
+
+            constexpr const IDevice &GetDevice() const {
+                return *this->device;
+            }
+    };
+
+    class DeviceCodeEntryHolder {
+        NON_COPYABLE(DeviceCodeEntryHolder);
+        NON_MOVEABLE(DeviceCodeEntryHolder);
+        private:
+            util::IntrusiveListNode list_node;
+            TYPED_STORAGE(DeviceCodeEntry) entry_storage;
+            bool is_constructed;
+        public:
+            using ListTraits = util::IntrusiveListMemberTraitsDeferredAssert<&DeviceCodeEntryHolder::list_node>;
+            using List       = typename ListTraits::ListType;
+            friend class util::IntrusiveList<DeviceCodeEntryHolder, util::IntrusiveListMemberTraitsDeferredAssert<&DeviceCodeEntryHolder::list_node>>;
+        public:
+            DeviceCodeEntryHolder() : list_node(), entry_storage(), is_constructed(false) {
+                /* ... */
+            }
+
+            ~DeviceCodeEntryHolder() {
+                if (this->IsConstructed()) {
+                    this->Destroy();
+                }
+            }
+
+            void AddTo(List &list) {
+                list.push_back(*this);
+            }
+
+            void RemoveFrom(List list) {
+                list.erase(list.iterator_to(*this));
+            }
+
+            bool IsLinkedToList() const {
+                return this->list_node.IsLinked();
+            }
+
+            DeviceCodeEntry &Construct(DeviceCode dc, IDevice *dev) {
+                AMS_ASSERT(!this->IsConstructed());
+                DeviceCodeEntry *entry = new (GetPointer(this->entry_storage)) DeviceCodeEntry(dc, dev);
+                this->is_constructed = true;
+                return *entry;
+            }
+
+            bool IsConstructed() const {
+                return this->is_constructed;
+            }
+
+            void Destroy() {
+                AMS_ASSERT(this->IsConstructed());
+                GetReference(this->entry_storage).~DeviceCodeEntry();
+                this->is_constructed = false;
+            }
+
+            DeviceCodeEntry &Get() {
+                AMS_ASSERT(this->IsConstructed());
+                return GetReference(this->entry_storage);
+            }
+
+            const DeviceCodeEntry &Get() const {
+                AMS_ASSERT(this->IsConstructed());
+                return GetReference(this->entry_storage);
+            }
+    };
+    static_assert(DeviceCodeEntryHolder::ListTraits::IsValid());
+
+}