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//===-- memprof_interceptors_memintrinsics.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 MemProfiler, a memory profiler.
//
// MemProf-private header for memprof_interceptors_memintrinsics.cpp
//===---------------------------------------------------------------------===//
#ifndef MEMPROF_MEMINTRIN_H
#define MEMPROF_MEMINTRIN_H
#include "interception/interception.h"
#include "memprof_interface_internal.h"
#include "memprof_internal.h"
#include "memprof_mapping.h"
DECLARE_REAL(void *, memcpy, void *to, const void *from, uptr size)
DECLARE_REAL(void *, memset, void *block, int c, uptr size)
namespace __memprof {
// We implement ACCESS_MEMORY_RANGE, MEMPROF_READ_RANGE,
// and MEMPROF_WRITE_RANGE as macro instead of function so
// that no extra frames are created, and stack trace contains
// relevant information only.
#define ACCESS_MEMORY_RANGE(offset, size) \
do { \
__memprof_record_access_range(offset, size); \
} while (0)
// memcpy is called during __memprof_init() from the internals of printf(...).
// We do not treat memcpy with to==from as a bug.
// See http://llvm.org/bugs/show_bug.cgi?id=11763.
#define MEMPROF_MEMCPY_IMPL(to, from, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memcpy(to, from, size); \
if (memprof_init_is_running) { \
return REAL(memcpy)(to, from, size); \
} \
ENSURE_MEMPROF_INITED(); \
MEMPROF_READ_RANGE(from, size); \
MEMPROF_WRITE_RANGE(to, size); \
return REAL(memcpy)(to, from, size); \
} while (0)
// memset is called inside Printf.
#define MEMPROF_MEMSET_IMPL(block, c, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memset(block, c, size); \
if (memprof_init_is_running) { \
return REAL(memset)(block, c, size); \
} \
ENSURE_MEMPROF_INITED(); \
MEMPROF_WRITE_RANGE(block, size); \
return REAL(memset)(block, c, size); \
} while (0)
#define MEMPROF_MEMMOVE_IMPL(to, from, size) \
do { \
if (UNLIKELY(!memprof_inited)) \
return internal_memmove(to, from, size); \
ENSURE_MEMPROF_INITED(); \
MEMPROF_READ_RANGE(from, size); \
MEMPROF_WRITE_RANGE(to, size); \
return internal_memmove(to, from, size); \
} while (0)
#define MEMPROF_READ_RANGE(offset, size) ACCESS_MEMORY_RANGE(offset, size)
#define MEMPROF_WRITE_RANGE(offset, size) ACCESS_MEMORY_RANGE(offset, size)
} // namespace __memprof
#endif // MEMPROF_MEMINTRIN_H
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