1// Copyright 2013 the V8 project authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// MemorySanitizer support.
6
7#ifndef V8_MSAN_H_
8#define V8_MSAN_H_
9
10#include "src/base/macros.h"
11#include "src/globals.h"
12
13#ifdef V8_USE_MEMORY_SANITIZER
14
15#include <sanitizer/msan_interface.h>
16
17// Marks a memory range as uninitialized, as if it was allocated here.
18#define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) \
19 __msan_allocated_memory(reinterpret_cast<const void*>(p), (s))
20// Marks a memory range as initialized.
21#define MSAN_MEMORY_IS_INITIALIZED(p, s) \
22 __msan_unpoison(reinterpret_cast<const void*>(p), (s))
23
24#else // !V8_USE_MEMORY_SANITIZER
25
26#define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) \
27 static_assert((std::is_pointer<decltype(p)>::value || \
28 std::is_same<v8::internal::Address, decltype(p)>::value) && \
29 std::is_convertible<decltype(s), size_t>::value, \
30 "static type violation")
31#define MSAN_MEMORY_IS_INITIALIZED(p, s) \
32 MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s)
33
34#endif // V8_USE_MEMORY_SANITIZER
35
36#endif // V8_MSAN_H_
37