1//===-- random.cpp ----------------------------------------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "gwp_asan/random.h"
10#include "gwp_asan/guarded_pool_allocator.h"
11
12#include <time.h>
13
14namespace gwp_asan {
15uint32_t getRandomUnsigned32() {
16  thread_local uint32_t RandomState =
17      time(nullptr) + GuardedPoolAllocator::getThreadID();
18  RandomState ^= RandomState << 13;
19  RandomState ^= RandomState >> 17;
20  RandomState ^= RandomState << 5;
21  return RandomState;
22}
23} // namespace gwp_asan
24