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59 lines
1.6 KiB
C++
59 lines
1.6 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_HTTP2_TOOLS_HTTP2_RANDOM_H_
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#define NET_HTTP2_TOOLS_HTTP2_RANDOM_H_
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#include <stdint.h>
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#include <limits>
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#include "net/http2/platform/api/http2_string.h"
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namespace net {
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namespace test {
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class RandomBase {
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public:
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virtual ~RandomBase() {}
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virtual bool OneIn(int n) = 0;
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virtual int32_t Uniform(int32_t n) = 0;
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virtual uint8_t Rand8() = 0;
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virtual uint16_t Rand16() = 0;
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virtual uint32_t Rand32() = 0;
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virtual uint64_t Rand64() = 0;
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virtual int32_t Next() = 0;
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virtual int32_t Skewed(int max_log) = 0;
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virtual Http2String RandString(int length) = 0;
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// STL UniformRandomNumberGenerator implementation.
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typedef uint32_t result_type;
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static constexpr result_type min() { return 0; }
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static constexpr result_type max() {
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return std::numeric_limits<uint32_t>::max();
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}
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result_type operator()() { return Rand32(); }
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};
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// Http2Random holds no state: instances use the same base::RandGenerator
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// with a global state.
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class Http2Random : public RandomBase {
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public:
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~Http2Random() override {}
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bool OneIn(int n) override;
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int32_t Uniform(int32_t n) override;
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uint8_t Rand8() override;
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uint16_t Rand16() override;
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uint32_t Rand32() override;
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uint64_t Rand64() override;
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int32_t Next() override;
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int32_t Skewed(int max_log) override;
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Http2String RandString(int length) override;
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};
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} // namespace test
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} // namespace net
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#endif // NET_HTTP2_TOOLS_HTTP2_RANDOM_H_
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