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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ | 5 #ifndef TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ |
6 #define TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ | 6 #define TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include <stddef.h> |
| 9 #include <stdint.h> |
| 10 |
9 #include "third_party/mt19937ar/mt19937ar.h" | 11 #include "third_party/mt19937ar/mt19937ar.h" |
10 | 12 |
11 namespace ipc_fuzzer { | 13 namespace ipc_fuzzer { |
12 | 14 |
13 extern MersenneTwister* g_mersenne_twister; | 15 extern MersenneTwister* g_mersenne_twister; |
14 | 16 |
15 void InitRand(); | 17 void InitRand(); |
16 | 18 |
17 inline uint32 RandU32() { | 19 inline uint32_t RandU32() { |
18 return g_mersenne_twister->genrand_int32(); | 20 return g_mersenne_twister->genrand_int32(); |
19 } | 21 } |
20 | 22 |
21 inline uint64 RandU64() { | 23 inline uint64_t RandU64() { |
22 return (static_cast<uint64>(RandU32()) << 32) | RandU32(); | 24 return (static_cast<uint64_t>(RandU32()) << 32) | RandU32(); |
23 } | 25 } |
24 | 26 |
25 inline double RandDouble() { | 27 inline double RandDouble() { |
26 uint64 rand_u64 = RandU64(); | 28 uint64_t rand_u64 = RandU64(); |
27 return *reinterpret_cast<double*>(&rand_u64); | 29 return *reinterpret_cast<double*>(&rand_u64); |
28 } | 30 } |
29 | 31 |
30 inline uint32 RandInRange(uint32 range) { | 32 inline uint32_t RandInRange(uint32_t range) { |
31 return RandU32() % range; | 33 return RandU32() % range; |
32 } | 34 } |
33 | 35 |
34 inline bool RandEvent(uint32 frequency) { | 36 inline bool RandEvent(uint32_t frequency) { |
35 return RandInRange(frequency) == 0; | 37 return RandInRange(frequency) == 0; |
36 } | 38 } |
37 | 39 |
38 inline size_t RandElementCount() { | 40 inline size_t RandElementCount() { |
39 return RandU32() % 10; | 41 return RandU32() % 10; |
40 } | 42 } |
41 | 43 |
42 } // namespace ipc_fuzzer | 44 } // namespace ipc_fuzzer |
43 | 45 |
44 #endif // TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ | 46 #endif // TOOLS_IPC_FUZZER_MUTATE_RAND_UTIL_H_ |
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