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//===-- memprof_interceptors.cpp -----------------------------------------===//
//
// 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.
//
// Interceptors for operators new and delete.
//===----------------------------------------------------------------------===//
#include "memprof_allocator.h"
#include "memprof_internal.h"
#include "memprof_stack.h"
#include "sanitizer_common/sanitizer_allocator_report.h"
#include "interception/interception.h"
#include <stddef.h>
#define CXX_OPERATOR_ATTRIBUTE INTERCEPTOR_ATTRIBUTE
using namespace __memprof;
// Fake std::nothrow_t and std::align_val_t to avoid including <new>.
namespace std {
struct nothrow_t {};
enum class align_val_t : size_t {};
} // namespace std
#define OPERATOR_NEW_BODY(type, nothrow) \
GET_STACK_TRACE_MALLOC; \
void *res = memprof_memalign(0, size, &stack, type); \
if (!nothrow && UNLIKELY(!res)) \
ReportOutOfMemory(size, &stack); \
return res;
#define OPERATOR_NEW_BODY_ALIGN(type, nothrow) \
GET_STACK_TRACE_MALLOC; \
void *res = memprof_memalign((uptr)align, size, &stack, type); \
if (!nothrow && UNLIKELY(!res)) \
ReportOutOfMemory(size, &stack); \
return res;
CXX_OPERATOR_ATTRIBUTE
void *operator new(size_t size) {
OPERATOR_NEW_BODY(FROM_NEW, false /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new[](size_t size) {
OPERATOR_NEW_BODY(FROM_NEW_BR, false /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new(size_t size, std::nothrow_t const &) {
OPERATOR_NEW_BODY(FROM_NEW, true /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new[](size_t size, std::nothrow_t const &) {
OPERATOR_NEW_BODY(FROM_NEW_BR, true /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new(size_t size, std::align_val_t align) {
OPERATOR_NEW_BODY_ALIGN(FROM_NEW, false /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new[](size_t size, std::align_val_t align) {
OPERATOR_NEW_BODY_ALIGN(FROM_NEW_BR, false /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new(size_t size, std::align_val_t align,
std::nothrow_t const &) {
OPERATOR_NEW_BODY_ALIGN(FROM_NEW, true /*nothrow*/);
}
CXX_OPERATOR_ATTRIBUTE
void *operator new[](size_t size, std::align_val_t align,
std::nothrow_t const &) {
OPERATOR_NEW_BODY_ALIGN(FROM_NEW_BR, true /*nothrow*/);
}
#define OPERATOR_DELETE_BODY(type) \
GET_STACK_TRACE_FREE; \
memprof_delete(ptr, 0, 0, &stack, type);
#define OPERATOR_DELETE_BODY_SIZE(type) \
GET_STACK_TRACE_FREE; \
memprof_delete(ptr, size, 0, &stack, type);
#define OPERATOR_DELETE_BODY_ALIGN(type) \
GET_STACK_TRACE_FREE; \
memprof_delete(ptr, 0, static_cast<uptr>(align), &stack, type);
#define OPERATOR_DELETE_BODY_SIZE_ALIGN(type) \
GET_STACK_TRACE_FREE; \
memprof_delete(ptr, size, static_cast<uptr>(align), &stack, type);
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr)NOEXCEPT { OPERATOR_DELETE_BODY(FROM_NEW); }
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr) NOEXCEPT {
OPERATOR_DELETE_BODY(FROM_NEW_BR);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr, std::nothrow_t const &) {
OPERATOR_DELETE_BODY(FROM_NEW);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr, std::nothrow_t const &) {
OPERATOR_DELETE_BODY(FROM_NEW_BR);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr, size_t size)NOEXCEPT {
OPERATOR_DELETE_BODY_SIZE(FROM_NEW);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr, size_t size) NOEXCEPT {
OPERATOR_DELETE_BODY_SIZE(FROM_NEW_BR);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr, std::align_val_t align)NOEXCEPT {
OPERATOR_DELETE_BODY_ALIGN(FROM_NEW);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT {
OPERATOR_DELETE_BODY_ALIGN(FROM_NEW_BR);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr, std::align_val_t align,
std::nothrow_t const &) {
OPERATOR_DELETE_BODY_ALIGN(FROM_NEW);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr, std::align_val_t align,
std::nothrow_t const &) {
OPERATOR_DELETE_BODY_ALIGN(FROM_NEW_BR);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete(void *ptr, size_t size, std::align_val_t align)NOEXCEPT {
OPERATOR_DELETE_BODY_SIZE_ALIGN(FROM_NEW);
}
CXX_OPERATOR_ATTRIBUTE
void operator delete[](void *ptr, size_t size,
std::align_val_t align) NOEXCEPT {
OPERATOR_DELETE_BODY_SIZE_ALIGN(FROM_NEW_BR);
}
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