llvm/llvm/lib/Support/RandomNumberGenerator.cpp

//===-- RandomNumberGenerator.cpp - Implement RNG class -------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file implements deterministic random number generation (RNG).
// The current implementation is NOT cryptographically secure as it uses
// the C++11 <random> facilities.
//
//===----------------------------------------------------------------------===//

#include "llvm/Support/RandomNumberGenerator.h"

#include "DebugOptions.h"

#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/raw_ostream.h"
#ifdef _WIN32
#include "llvm/Support/Windows/WindowsSupport.h"
#else
#include "Unix/Unix.h"
#endif

usingnamespacellvm;

#define DEBUG_TYPE …
namespace {
struct CreateSeed { … };
} // namespace
static ManagedStatic<cl::opt<uint64_t>, CreateSeed> Seed;
void llvm::initRandomSeedOptions() { … }

RandomNumberGenerator::RandomNumberGenerator(StringRef Salt) { … }

RandomNumberGenerator::result_type RandomNumberGenerator::operator()() { … }

// Get random vector of specified size
std::error_code llvm::getRandomBytes(void *Buffer, size_t Size) { … }