From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- tools/fuzzing/common/FuzzingTraits.cpp | 41 ++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 tools/fuzzing/common/FuzzingTraits.cpp (limited to 'tools/fuzzing/common/FuzzingTraits.cpp') diff --git a/tools/fuzzing/common/FuzzingTraits.cpp b/tools/fuzzing/common/FuzzingTraits.cpp new file mode 100644 index 0000000000..9e6ba3ac1d --- /dev/null +++ b/tools/fuzzing/common/FuzzingTraits.cpp @@ -0,0 +1,41 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include +#include +#include +#include "FuzzingTraits.h" + +namespace mozilla { +namespace fuzzing { + +/* static */ +unsigned int FuzzingTraits::Random(unsigned int aMax) { + MOZ_ASSERT(aMax > 0, "aMax needs to be bigger than 0"); + std::uniform_int_distribution d(0, aMax); + return d(Rng()); +} + +/* static */ +bool FuzzingTraits::Sometimes(unsigned int aProbability) { + return FuzzingTraits::Random(aProbability) == 0; +} + +/* static */ +size_t FuzzingTraits::Frequency(const size_t aSize, const uint64_t aFactor) { + return RandomIntegerRange(0, ceil(float(aSize) / aFactor)) + 1; +} + +/* static */ +std::mt19937_64& FuzzingTraits::Rng() { + static std::mt19937_64 rng; + static std::once_flag flag; + std::call_once(flag, [&] { rng.seed(PR_IntervalNow()); }); + return rng; +} + +} // namespace fuzzing +} // namespace mozilla -- cgit v1.2.3