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Revert "LibC: Simplify malloc size classes"

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This reverts commit f91bcb8895.
This commit is contained in:
Andreas Kling 2021-05-18 08:32:05 +02:00
parent f5c4d86592
commit 7957f13e98
3 changed files with 18 additions and 12 deletions
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18
Userland/Libraries/LibC/mallocdefs.h
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@ -6,8 +6,6 @@
#pragma once
#include <AK/AllOf.h>
#include <AK/Array.h>
#include <AK/InlineLinkedList.h>
#include <AK/Types.h>
@ -16,10 +14,18 @@
#define MALLOC_SCRUB_BYTE 0xdc
#define FREE_SCRUB_BYTE 0xed
static constexpr Array<unsigned short, 13> size_classes { 8, 16, 32, 64, 128, 256, 504, 1016, 2032, 4088, 8184, 16376, 32752 };
static constexpr auto malloc_alignment = 8;
static_assert(all_of(size_classes.begin(), size_classes.end(),
[](const auto val) { return val % malloc_alignment == 0; }));
static constexpr unsigned short size_classes[] = { 8, 16, 32, 64, 128, 256, 504, 1016, 2032, 4088, 8184, 16376, 32752, 0 };
static constexpr size_t num_size_classes = (sizeof(size_classes) / sizeof(unsigned short)) - 1;
consteval bool check_size_classes_alignment()
{
for (size_t i = 0; i < num_size_classes; i++) {
if ((size_classes[i] % 8) != 0)
return false;
}
return true;
}
static_assert(check_size_classes_alignment());
struct CommonHeader {
size_t m_magic;