1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef RENDER_DATA_STORE_RENDER_DATA_STORE_MANAGER_H
17 #define RENDER_DATA_STORE_RENDER_DATA_STORE_MANAGER_H
18 
19 #include <mutex>
20 
21 #include <base/containers/unique_ptr.h>
22 #include <base/containers/unordered_map.h>
23 #include <render/datastore/intf_render_data_store_manager.h>
24 #include <render/intf_plugin.h>
25 #include <render/namespace.h>
26 
27 RENDER_BEGIN_NAMESPACE()
28 class IRenderContext;
29 
30 /**
31 RenderDataManager class.
32 Implementation for render data manager class.
33 */
34 class RenderDataStoreManager final : public IRenderDataStoreManager {
35 public:
36     explicit RenderDataStoreManager(IRenderContext& renderContext);
37     ~RenderDataStoreManager() = default;
38 
39     RenderDataStoreManager(const RenderDataStoreManager&) = delete;
40     RenderDataStoreManager& operator=(const RenderDataStoreManager&) = delete;
41 
42     void CommitFrameData() override;
43     void PreRender();
44     void PostRender();
45     void PreRenderBackend();
46     void PostRenderBackend();
47 
48     // uses locking mechanism
49     IRenderDataStore* GetRenderDataStore(const BASE_NS::string_view name) const override;
50     // Does not use lock. Call only from render nodes.
51     // This is only safe during PreRender() PostRender() scope.
52     IRenderDataStore* GetRenderTimeRenderDataStore(const BASE_NS::string_view name) const;
53 
54     IRenderDataStore* Create(const BASE_NS::Uid& dataStoreTypeUid, char const* dataStoreName) override;
55     void Destroy(const BASE_NS::Uid& dataStoreTypeUid, IRenderDataStore* instance) override;
56 
57     RenderDataStoreFlags GetRenderDataStoreFlags() const override;
58 
59     FrameIndices GetFrameIndices() const override;
60 
61     // Not synchronized and not in API
62     void AddRenderDataStoreFactory(const RenderDataStoreTypeInfo& typeInfo);
63     // Not synchronized and not in API
64     void RemoveRenderDataStoreFactory(const RenderDataStoreTypeInfo& typeInfo);
65 
66 #if (RENDER_VALIDATION_ENABLED == 1)
67     void ValidateCommitFrameData() const;
68 #endif
69 
70 private:
71     IRenderContext& renderContext_;
72 
73     void DeferredDestruction();
74 
75     using RenderDataStorePtr = BASE_NS::unique_ptr<IRenderDataStore, RenderDataStoreTypeInfo::DestroyRenderDataStoreFn>;
76     struct DeferredDataStoreDestroy {
77         uint64_t dataStoreHash { 0 };
78         IRenderDataStore* instance { nullptr };
79     };
80     struct PendingRenderAccessStore {
81         uint64_t hash { 0u };
82         IRenderDataStore* renderDataStore { nullptr };
83         bool destroy { false };
84     };
85 
86     mutable std::mutex mutex_;
87 
88     // the following needs be locked with mutex
89     BASE_NS::unordered_map<uint64_t, RenderDataStorePtr> stores_;
90     BASE_NS::unordered_map<IRenderDataStore*, uint64_t> pointerToStoreHash_;
91     BASE_NS::vector<DeferredDataStoreDestroy> deferredDestructionDataStores_;
92     BASE_NS::vector<PendingRenderAccessStore> pendingRenderAccess_;
93 
94     // lock not needed for access
95     BASE_NS::unordered_map<uint64_t, IRenderDataStore*> renderAccessStores_;
96     BASE_NS::unordered_map<uint64_t, RenderDataStoreTypeInfo> factories_;
97 
98     RenderDataStoreFlags renderDataStoreFlags_ { 0u };
99     uint32_t frameWriteIndex_ { 0u };
100 #if (RENDER_VALIDATION_ENABLED == 1)
101     uint64_t commitDeviceFrameIndex_ { 0u };
102 #endif
103 };
104 
105 class RenderNodeRenderDataStoreManager final : public IRenderNodeRenderDataStoreManager {
106 public:
107     explicit RenderNodeRenderDataStoreManager(const RenderDataStoreManager& renderDataStoreMgr);
108     ~RenderNodeRenderDataStoreManager() = default;
109 
110     RenderNodeRenderDataStoreManager(const RenderNodeRenderDataStoreManager&) = delete;
111     RenderNodeRenderDataStoreManager& operator=(const RenderNodeRenderDataStoreManager&) = delete;
112 
113     // calls the unsafe method from render data store
114     IRenderDataStore* GetRenderDataStore(const BASE_NS::string_view name) const override;
115 
116 private:
117     const RenderDataStoreManager& renderDataStoreMgr_;
118 };
119 RENDER_END_NAMESPACE()
120 
121 #endif // RENDER_DATA_STORE_RENDER_DATA_STORE_MANAGER_H
122