| 1 | //===-- msan_allocator.h ----------------------------------------*- C++ -*-===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // This file is a part of MemorySanitizer. |
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| 10 | // |
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| 11 | //===----------------------------------------------------------------------===// |
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| 12 | |
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| 13 | #ifndef MSAN_ALLOCATOR_H |
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| 14 | #define MSAN_ALLOCATOR_H |
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| 15 | |
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| 16 | #include "sanitizer_common/sanitizer_common.h" |
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| 17 | |
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| 18 | namespace __msan { |
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| 19 | |
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| 20 | struct MsanThreadLocalMallocStorage { |
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| 21 | // Allocator cache contains atomic_uint64_t which must be 8-byte aligned. |
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| 22 | ALIGNED(8) uptr allocator_cache[96 * (512 * 8 + 16)]; // Opaque. |
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| 23 | void Init(); |
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| 24 | void CommitBack(); |
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| 25 | |
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| 26 | private: |
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| 27 | // These objects are allocated via mmap() and are zero-initialized. |
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| 28 | MsanThreadLocalMallocStorage() {} |
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| 29 | }; |
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| 30 | |
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| 31 | void LockAllocator(); |
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| 32 | void UnlockAllocator(); |
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| 33 | |
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| 34 | } // namespace __msan |
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| 35 | #endif // MSAN_ALLOCATOR_H |
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| 36 | |
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