mirror of
https://github.com/SerenityOS/serenity
synced 2024-07-22 02:26:11 +00:00
ac7ce12123
This was a premature optimization from the early days of SerenityOS. The eternal heap was a simple bump pointer allocator over a static byte array. My original idea was to avoid heap fragmentation and improve data locality, but both ideas were rooted in cargo culting, not data. We would reserve 4 MiB at boot and only ended up using ~256 KiB, wasting the rest. This patch replaces all kmalloc_eternal() usage by regular kmalloc().
56 lines
1.1 KiB
C++
56 lines
1.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
|
|
* Copyright (c) 2021, Daniel Bertalan <dani@danielbertalan.dev>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Checked.h>
|
|
|
|
#if defined(KERNEL)
|
|
# include <Kernel/Heap/kmalloc.h>
|
|
#else
|
|
# include <new>
|
|
# include <stdlib.h>
|
|
|
|
# define kcalloc calloc
|
|
# define kmalloc malloc
|
|
# define kmalloc_good_size malloc_good_size
|
|
# define kfree free
|
|
|
|
inline void kfree_sized(void* ptr, size_t)
|
|
{
|
|
kfree(ptr);
|
|
}
|
|
#endif
|
|
|
|
#ifndef __serenity__
|
|
# include <AK/Types.h>
|
|
|
|
# ifndef AK_OS_MACOS
|
|
extern "C" {
|
|
inline size_t malloc_good_size(size_t size) { return size; }
|
|
}
|
|
# else
|
|
# include <malloc/malloc.h>
|
|
# endif
|
|
#endif
|
|
|
|
using std::nothrow;
|
|
|
|
inline void* kmalloc_array(Checked<size_t> a, Checked<size_t> b)
|
|
{
|
|
auto size = a * b;
|
|
VERIFY(!size.has_overflow());
|
|
return kmalloc(size.value());
|
|
}
|
|
|
|
inline void* kmalloc_array(Checked<size_t> a, Checked<size_t> b, Checked<size_t> c)
|
|
{
|
|
auto size = a * b * c;
|
|
VERIFY(!size.has_overflow());
|
|
return kmalloc(size.value());
|
|
}
|