1 /*
2  * Copyright (c) Huawei Technologies Co., Ltd. 2023. All rights reserved.
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 CALL_STACK_TABLE_H
17 #define CALL_STACK_TABLE_H
18 
19 #include "table_base.h"
20 #include "trace_data_cache.h"
21 
22 namespace SysTuning {
23 namespace TraceStreamer {
24 class CallStackTable : public TableBase {
25 public:
26     explicit CallStackTable(const TraceDataCache *dataCache);
27     ~CallStackTable() override;
28     std::unique_ptr<TableBase::Cursor> CreateCursor() override;
29 
30 private:
31     int64_t GetSize() override
32     {
33         return dataCache_->GetConstInternalSlicesData().Size();
34     }
35     void GetOrbyes(FilterConstraints &callfc, EstimatedIndexInfo &callei) override;
36     void FilterByConstraint(FilterConstraints &callfc,
37                             double &callfilterCost,
38                             size_t callrowCount,
39                             uint32_t callcurrenti) override;
40 
41     class Cursor : public TableBase::Cursor {
42     public:
43         explicit Cursor(const TraceDataCache *dataCache, TableBase *table);
44         ~Cursor() override;
45         int32_t Filter(const FilterConstraints &fc, sqlite3_value **argv) override;
46         int32_t Column(int32_t col) const override;
47         void HandleTypeColumns(int32_t col) const;
48 
49     private:
50         const CallStack &slicesObj_;
51     };
52 };
53 } // namespace TraceStreamer
54 } // namespace SysTuning
55 
56 #endif // CALL_STACK_TABLE_H
57