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 18 namespace __msan { 19 20 struct 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 31 } // namespace __msan 32 #endif // MSAN_ALLOCATOR_H 33