llvm-project/compiler-rt/lib/asan/asan_malloc_local.h

53 lines
1.9 KiB
C++

//===-- asan_malloc_local.h -------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is a part of AddressSanitizer, an address sanity checker.
//
// Provide interfaces to check for and handle local pool memory allocation.
//===----------------------------------------------------------------------===//
#ifndef ASAN_MALLOC_LOCAL_H
#define ASAN_MALLOC_LOCAL_H
#include "sanitizer_common/sanitizer_platform.h"
#include "asan_internal.h"
static INLINE bool EarlyMalloc() {
return SANITIZER_RTEMS &&
(!__asan::asan_inited || __asan::asan_init_is_running);
}
#if SANITIZER_RTEMS
bool IsFromLocalPool(const void *ptr);
void *MemalignFromLocalPool(uptr alignment, uptr size);
// On RTEMS, we use the local pool to handle memory allocation when the ASan
// run-time is not up. This macro is expanded in the context of the operator new
// implementation.
#define MAYBE_ALLOCATE_FROM_LOCAL_POOL(nothrow) \
do { \
if (UNLIKELY(EarlyMalloc())) { \
void *res = MemalignFromLocalPool(SHADOW_GRANULARITY, size); \
if (!nothrow) \
CHECK(res); \
return res; \
} \
} while (0)
#define IS_FROM_LOCAL_POOL(ptr) UNLIKELY(IsFromLocalPool(ptr))
#else // SANITIZER_RTEMS
#define MAYBE_ALLOCATE_FROM_LOCAL_POOL(nothrow)
#define IS_FROM_LOCAL_POOL(ptr) 0
#endif // SANITIZER_RTEMS
#endif // ASAN_MALLOC_LOCAL_H