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1 // Copyright 2016 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #include "net/http2/tools/http2_random.h" | |
6 | |
7 #include <limits> | |
8 #include <memory> | |
9 | |
10 #include "base/rand_util.h" | |
11 | |
12 namespace net { | |
13 namespace test { | |
14 | |
15 bool Http2Random::OneIn(int n) { | |
16 return base::RandGenerator(n) == 0; | |
17 } | |
18 | |
19 int32_t Http2Random::Uniform(int32_t n) { | |
20 return base::RandGenerator(n); | |
21 } | |
22 | |
23 uint8_t Http2Random::Rand8() { | |
24 return base::RandGenerator( | |
25 static_cast<uint64_t>(std::numeric_limits<uint8_t>::max()) + 1); | |
26 } | |
27 | |
28 uint16_t Http2Random::Rand16() { | |
29 return base::RandGenerator( | |
30 static_cast<uint64_t>(std::numeric_limits<uint16_t>::max()) + 1); | |
31 } | |
32 | |
33 uint32_t Http2Random::Rand32() { | |
34 return base::RandGenerator( | |
35 static_cast<uint64_t>(std::numeric_limits<uint32_t>::max()) + 1); | |
36 } | |
37 | |
38 uint64_t Http2Random::Rand64() { | |
39 return base::RandUint64(); | |
40 } | |
41 | |
42 int32_t Http2Random::Next() { | |
43 return Rand32(); | |
44 } | |
45 | |
46 int32_t Http2Random::Skewed(int max_log) { | |
47 const uint32_t base = Rand32() % (max_log + 1); | |
48 const uint32_t mask = ((base < 32) ? (1u << base) : 0u) - 1u; | |
49 return Rand32() & mask; | |
50 } | |
51 | |
52 std::string Http2Random::RandString(int length) { | |
53 std::unique_ptr<char[]> buffer(new char[length]); | |
54 base::RandBytes(buffer.get(), length); | |
55 return std::string(buffer.get(), length); | |
56 } | |
57 | |
58 } // namespace test | |
59 } // namespace net | |
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