Kernel: Implement kmalloc_good_size for the new kmalloc

This lets kmalloc-aware data structures like Vector and HashTable use up the extra wasted space we allocate in the slab heaps & heap chunks.
Author: https://github.com/IdanHo Commit: 29eee390ec Pull-request: https://github.com/SerenityOS/serenity/pull/12932 Reviewed-by: https://github.com/bgianfo ✅
2025-08-27 12:46:06 +00:00 · 2022-03-07 23:38:05 +02:00 · 2022-03-07 23:38:05 +02:00 · 29eee390ec · 2024-07-17 17:49:39 +09:00
commit 29eee390ec
parent c204885a94
2 changed files with 10 additions and 1 deletions
--- a/Kernel/Heap/Heap.h
+++ b/Kernel/Heap/Heap.h
@ -44,6 +44,8 @@ class Heap {
    }

 public:
+    static constexpr size_t AllocationHeaderSize = sizeof(AllocationHeader);
+
    Heap(u8* memory, size_t memory_size)
        : m_total_chunks(calculate_chunks(memory_size))
        , m_chunks(memory)