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 ALIGNED(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