59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
|
// Copyright 2021 The Tint Authors.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
// you may not use this file except in compliance with the License.
|
||
|
|
// You may obtain a copy of the License at
|
||
|
|
//
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
//
|
||
|
|
// Unless required by applicable law or agreed to in writing, software
|
||
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
// See the License for the specific language governing permissions and
|
||
|
|
// limitations under the License.
|
||
|
|
|
||
|
|
#ifndef FUZZERS_RANDOM_GENERATOR_ENGINE_H_
|
||
|
|
#define FUZZERS_RANDOM_GENERATOR_ENGINE_H_
|
||
|
|
|
||
|
|
#include <memory>
|
||
|
|
#include <random>
|
||
|
|
#include <vector>
|
||
|
|
|
||
|
|
namespace tint {
|
||
|
|
namespace fuzzers {
|
||
|
|
|
||
|
|
/// Wrapper interface around STL random number engine
|
||
|
|
class RandomGeneratorEngine {
|
||
|
|
public:
|
||
|
|
RandomGeneratorEngine();
|
||
|
|
virtual ~RandomGeneratorEngine();
|
||
|
|
RandomGeneratorEngine(RandomGeneratorEngine&&);
|
||
|
|
|
||
|
|
/// Generate random uint32_t value from uniform distribution.
|
||
|
|
/// @param lower - lower bound of integer generated
|
||
|
|
/// @param upper - upper bound of integer generated
|
||
|
|
/// @returns i, where lower <= i < upper
|
||
|
|
virtual uint32_t RandomUInt32(uint32_t lower, uint32_t upper) = 0;
|
||
|
|
|
||
|
|
/// Get random uint64_t value from uniform distribution.
|
||
|
|
/// @param lower - lower bound of integer generated
|
||
|
|
/// @param upper - upper bound of integer generated
|
||
|
|
/// @returns i, where lower <= i < upper
|
||
|
|
virtual uint64_t RandomUInt64(uint64_t lower, uint64_t upper) = 0;
|
||
|
|
|
||
|
|
/// Get N bytes of pseudo-random data
|
||
|
|
/// @param dest - memory location to store data
|
||
|
|
/// @param n - number of bytes of data to generate
|
||
|
|
virtual void RandomNBytes(uint8_t* dest, size_t n) = 0;
|
||
|
|
|
||
|
|
private:
|
||
|
|
// Disallow copy & assign
|
||
|
|
RandomGeneratorEngine(const RandomGeneratorEngine&) = delete;
|
||
|
|
RandomGeneratorEngine& operator=(const RandomGeneratorEngine&) = delete;
|
||
|
|
}; // class RandomGeneratorEngine
|
||
|
|
|
||
|
|
} // namespace fuzzers
|
||
|
|
} // namespace tint
|
||
|
|
|
||
|
|
#endif // FUZZERS_RANDOM_GENERATOR_ENGINE_H_
|