serenity/AK/kmalloc.cpp
Daniel Bertalan a482a3e609 AK: Declare operators new and delete as global functions
This fixes a build issue introduced in 23d66fe, where the compiler
statically detected that that mismatching new and delete operators were
used.

Clang generates a warning for this, for the reasons described in the
comment in `AK/kmalloc.cpp`, but GCC does not.

Besides moving the allocator functions into a `.cpp` file, declarations
in `AK/kmalloc.cpp` were reordered to have imports at the top, in order
to make the code more readable.
2021-07-05 20:23:42 +02:00

63 lines
1.2 KiB
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2021, Daniel Bertalan <dani@danielbertalan.dev>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#if defined(__serenity__) && !defined(KERNEL)
# include <AK/Assertions.h>
# include <AK/kmalloc.h>
// However deceptively simple these functions look, they must not be inlined.
// Memory allocated in one translation unit has to be deallocatable in another
// translation unit, so these functions must be the same everywhere.
// By making these functions global, this invariant is enforced.
void* operator new(size_t size)
{
void* ptr = malloc(size);
VERIFY(ptr);
return ptr;
}
void* operator new(size_t size, const std::nothrow_t&) noexcept
{
return malloc(size);
}
void operator delete(void* ptr) noexcept
{
return free(ptr);
}
void operator delete(void* ptr, size_t) noexcept
{
return free(ptr);
}
void* operator new[](size_t size)
{
void* ptr = malloc(size);
VERIFY(ptr);
return ptr;
}
void* operator new[](size_t size, const std::nothrow_t&) noexcept
{
return malloc(size);
}
void operator delete[](void* ptr) noexcept
{
return free(ptr);
}
void operator delete[](void* ptr, size_t) noexcept
{
return free(ptr);
}
#endif