1//===-- msan_allocator.h ----------------------------------------*- 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// This file is a part of MemorySanitizer.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef MSAN_ALLOCATOR_H
14#define MSAN_ALLOCATOR_H
15
16#include "sanitizer_common/sanitizer_common.h"
17
18namespace __msan {
19
20struct MsanThreadLocalMallocStorage {
21 // Allocator cache contains atomic_uint64_t which must be 8-byte aligned.
22 alignas(8) uptr allocator_cache[96 * (512 * 8 + 16)]; // Opaque.
23 void Init();
24 void CommitBack();
25
26 private:
27 // These objects are allocated via mmap() and are zero-initialized.
28 MsanThreadLocalMallocStorage() {}
29};
30
31void LockAllocator();
32void UnlockAllocator();
33
34} // namespace __msan
35#endif // MSAN_ALLOCATOR_H
36