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108 lines
4.1 KiB
108 lines
4.1 KiB
//===-- scudo_new_delete.cpp ------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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///
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/// Interceptors for operators new and delete.
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///
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//===----------------------------------------------------------------------===//
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#include "scudo_allocator.h"
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#include "scudo_errors.h"
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#include "interception/interception.h"
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#include <stddef.h>
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using namespace __scudo;
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#define CXX_OPERATOR_ATTRIBUTE INTERCEPTOR_ATTRIBUTE
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// Fake std::nothrow_t to avoid including <new>.
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namespace std {
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struct nothrow_t {};
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enum class align_val_t: size_t {};
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} // namespace std
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// TODO(alekseys): throw std::bad_alloc instead of dying on OOM.
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#define OPERATOR_NEW_BODY_ALIGN(Type, Align, NoThrow) \
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void *Ptr = scudoAllocate(size, static_cast<uptr>(Align), Type); \
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if (!NoThrow && UNLIKELY(!Ptr)) reportOutOfMemory(size); \
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return Ptr;
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#define OPERATOR_NEW_BODY(Type, NoThrow) \
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OPERATOR_NEW_BODY_ALIGN(Type, 0, NoThrow)
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CXX_OPERATOR_ATTRIBUTE
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void *operator new(size_t size)
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{ OPERATOR_NEW_BODY(FromNew, /*NoThrow=*/false); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new[](size_t size)
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{ OPERATOR_NEW_BODY(FromNewArray, /*NoThrow=*/false); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new(size_t size, std::nothrow_t const&)
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{ OPERATOR_NEW_BODY(FromNew, /*NoThrow=*/true); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new[](size_t size, std::nothrow_t const&)
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{ OPERATOR_NEW_BODY(FromNewArray, /*NoThrow=*/true); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new(size_t size, std::align_val_t align)
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{ OPERATOR_NEW_BODY_ALIGN(FromNew, align, /*NoThrow=*/false); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new[](size_t size, std::align_val_t align)
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{ OPERATOR_NEW_BODY_ALIGN(FromNewArray, align, /*NoThrow=*/false); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new(size_t size, std::align_val_t align, std::nothrow_t const&)
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{ OPERATOR_NEW_BODY_ALIGN(FromNew, align, /*NoThrow=*/true); }
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CXX_OPERATOR_ATTRIBUTE
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void *operator new[](size_t size, std::align_val_t align, std::nothrow_t const&)
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{ OPERATOR_NEW_BODY_ALIGN(FromNewArray, align, /*NoThrow=*/true); }
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#define OPERATOR_DELETE_BODY(Type) \
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scudoDeallocate(ptr, 0, 0, Type);
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#define OPERATOR_DELETE_BODY_SIZE(Type) \
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scudoDeallocate(ptr, size, 0, Type);
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#define OPERATOR_DELETE_BODY_ALIGN(Type) \
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scudoDeallocate(ptr, 0, static_cast<uptr>(align), Type);
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#define OPERATOR_DELETE_BODY_SIZE_ALIGN(Type) \
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scudoDeallocate(ptr, size, static_cast<uptr>(align), Type);
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr) NOEXCEPT
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{ OPERATOR_DELETE_BODY(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr) NOEXCEPT
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{ OPERATOR_DELETE_BODY(FromNewArray); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr, std::nothrow_t const&)
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{ OPERATOR_DELETE_BODY(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr, std::nothrow_t const&)
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{ OPERATOR_DELETE_BODY(FromNewArray); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr, size_t size) NOEXCEPT
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{ OPERATOR_DELETE_BODY_SIZE(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr, size_t size) NOEXCEPT
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{ OPERATOR_DELETE_BODY_SIZE(FromNewArray); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr, std::align_val_t align) NOEXCEPT
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{ OPERATOR_DELETE_BODY_ALIGN(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr, std::align_val_t align) NOEXCEPT
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{ OPERATOR_DELETE_BODY_ALIGN(FromNewArray); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr, std::align_val_t align, std::nothrow_t const&)
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{ OPERATOR_DELETE_BODY_ALIGN(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr, std::align_val_t align, std::nothrow_t const&)
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{ OPERATOR_DELETE_BODY_ALIGN(FromNewArray); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete(void *ptr, size_t size, std::align_val_t align) NOEXCEPT
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{ OPERATOR_DELETE_BODY_SIZE_ALIGN(FromNew); }
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CXX_OPERATOR_ATTRIBUTE
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void operator delete[](void *ptr, size_t size, std::align_val_t align) NOEXCEPT
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{ OPERATOR_DELETE_BODY_SIZE_ALIGN(FromNewArray); }
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