1*3cab2bb3Spatrick //===-- msan_allocator.h ----------------------------------------*- C++ -*-===// 2*3cab2bb3Spatrick // 3*3cab2bb3Spatrick // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*3cab2bb3Spatrick // See https://llvm.org/LICENSE.txt for license information. 5*3cab2bb3Spatrick // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*3cab2bb3Spatrick // 7*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 8*3cab2bb3Spatrick // 9*3cab2bb3Spatrick // This file is a part of MemorySanitizer. 10*3cab2bb3Spatrick // 11*3cab2bb3Spatrick //===----------------------------------------------------------------------===// 12*3cab2bb3Spatrick 13*3cab2bb3Spatrick #ifndef MSAN_ALLOCATOR_H 14*3cab2bb3Spatrick #define MSAN_ALLOCATOR_H 15*3cab2bb3Spatrick 16*3cab2bb3Spatrick #include "sanitizer_common/sanitizer_common.h" 17*3cab2bb3Spatrick 18*3cab2bb3Spatrick namespace __msan { 19*3cab2bb3Spatrick 20*3cab2bb3Spatrick struct MsanThreadLocalMallocStorage { 21*3cab2bb3Spatrick // Allocator cache contains atomic_uint64_t which must be 8-byte aligned. 22*3cab2bb3Spatrick ALIGNED(8) uptr allocator_cache[96 * (512 * 8 + 16)]; // Opaque. 23*3cab2bb3Spatrick void CommitBack(); 24*3cab2bb3Spatrick 25*3cab2bb3Spatrick private: 26*3cab2bb3Spatrick // These objects are allocated via mmap() and are zero-initialized. MsanThreadLocalMallocStorageMsanThreadLocalMallocStorage27*3cab2bb3Spatrick MsanThreadLocalMallocStorage() {} 28*3cab2bb3Spatrick }; 29*3cab2bb3Spatrick 30*3cab2bb3Spatrick } // namespace __msan 31*3cab2bb3Spatrick #endif // MSAN_ALLOCATOR_H 32