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 PROCESS_TABLE_H
17 #define PROCESS_TABLE_H
18 
19 #include "table_base.h"
20 #include "trace_data_cache.h"
21 
22 namespace SysTuning {
23 namespace TraceStreamer {
24 class ProcessTable : public TableBase {
25 public:
26     explicit ProcessTable(const TraceDataCache *dataCache);
27     ~ProcessTable() override;
28     std::unique_ptr<TableBase::Cursor> CreateCursor() override;
29 
30 private:
31     int64_t GetSize() override
32     {
33         return dataCache_->ProcessSize();
34     }
35     void GetOrbyes(FilterConstraints &processfc, EstimatedIndexInfo &processei) override;
36     void FilterByConstraint(FilterConstraints &processfc,
37                             double &processfilterCost,
38                             size_t processrowCount,
39                             uint32_t processcurrenti) override;
40     int32_t Update(int32_t argc, sqlite3_value **argv, sqlite3_int64 *pRowid) override;
41 
42     class Cursor : public TableBase::Cursor {
43     public:
44         explicit Cursor(const TraceDataCache *dataCache, TableBase *table);
45         ~Cursor() override;
46         int32_t Filter(const FilterConstraints &fc, sqlite3_value **argv) override;
47         int32_t Column(int32_t col) const override;
48         void FilterPid(unsigned char op, uint64_t value);
49         void FilterIndex(int32_t col, unsigned char op, sqlite3_value *argv);
50         void FilterId(unsigned char op, sqlite3_value *argv) override;
51         void HandleIndexConstraintEQ(bool remove, uint64_t value);
52         void HandleIndexConstraintNQ(bool remove, uint64_t value);
53     };
54 };
55 } // namespace TraceStreamer
56 } // namespace SysTuning
57 #endif // PROCESS_TABLE_H
58