xref: /aosp_15_r20/external/perfetto/src/tracing/service/random.h (revision 6dbdd20afdafa5e3ca9b8809fa73465d530080dc)
1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef SRC_TRACING_SERVICE_RANDOM_H_
18 #define SRC_TRACING_SERVICE_RANDOM_H_
19 
20 #include <random>
21 
22 namespace perfetto::tracing_service {
23 
24 class Random {
25  public:
26   virtual ~Random();
27   virtual double GetValue() = 0;
28 };
29 
30 class RandomImpl : public Random {
31  public:
32   explicit RandomImpl(uint32_t seed);
33   ~RandomImpl() override;
34   double GetValue() override;
35 
36  private:
37   std::minstd_rand prng_;
38   std::uniform_real_distribution<double> dist_;
39 };
40 
41 }  // namespace perfetto::tracing_service
42 
43 #endif  // SRC_TRACING_SERVICE_RANDOM_H_
44