diff options
author | George Karpenkov <ekarpenkov@apple.com> | 2017-08-21 23:25:50 +0000 |
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committer | George Karpenkov <ekarpenkov@apple.com> | 2017-08-21 23:25:50 +0000 |
commit | 0c8339c8aab25f1156558e9e2082b4b124dc2327 (patch) | |
tree | 4f04d28abce4cbaa73fbba2b64f56af353e0f08b /lib/fuzzer/FuzzerRandom.h | |
parent | 1a32c939c5eece22f3ca6cf70bd05a1527bc0970 (diff) |
Move libFuzzer to compiler_rt.
Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.
Differential Revision: https://reviews.llvm.org/D36908
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@311407 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/fuzzer/FuzzerRandom.h')
-rw-r--r-- | lib/fuzzer/FuzzerRandom.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/lib/fuzzer/FuzzerRandom.h b/lib/fuzzer/FuzzerRandom.h new file mode 100644 index 000000000..8a1aa3ef5 --- /dev/null +++ b/lib/fuzzer/FuzzerRandom.h @@ -0,0 +1,34 @@ +//===- FuzzerRandom.h - Internal header for the Fuzzer ----------*- C++ -* ===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// fuzzer::Random +//===----------------------------------------------------------------------===// + +#ifndef LLVM_FUZZER_RANDOM_H +#define LLVM_FUZZER_RANDOM_H + +#include <random> + +namespace fuzzer { +class Random : public std::mt19937 { + public: + Random(unsigned int seed) : std::mt19937(seed) {} + result_type operator()() { return this->std::mt19937::operator()(); } + size_t Rand() { return this->operator()(); } + size_t RandBool() { return Rand() % 2; } + size_t operator()(size_t n) { return n ? Rand() % n : 0; } + intptr_t operator()(intptr_t From, intptr_t To) { + assert(From < To); + intptr_t RangeSize = To - From + 1; + return operator()(RangeSize) + From; + } +}; + +} // namespace fuzzer + +#endif // LLVM_FUZZER_RANDOM_H |