[kernel] Move mispalced slab_allocated.h

slab_allocated.h had accidentally been placed in src/kernel/objects

src/kernel/objects/slab_allocated.h

@@ -1,57 +0,0 @@
-#pragma once
-/// \file slab_allocated.h
-/// A parent template class for slab-allocated objects
-
-#include <stdlib.h>
-#include <util/pointers.h>
-#include <util/vector.h>
-
-#include "memory.h"
-
-extern uintptr_t g_slabs_bump_pointer;
-
-template <typename T, unsigned N = 1>
-class slab_allocated
-{
-public:
-    constexpr static unsigned slab_pages = N;
-    constexpr static unsigned slab_size = N * mem::frame_size;
-
-    void * operator new(size_t size)
-    {
-        kassert(size == sizeof(T), "Slab allocator got wrong size allocation");
-        if (s_free.count() == 0)
-            allocate_chunk();
-
-        T *item = s_free.pop();
-        memset(item, 0, sizeof(T));
-        return item;
-    }
-
-    void operator delete(void *p) { s_free.append(reinterpret_cast<T*>(p)); }
-
-private:
-    constexpr static size_t per_block = slab_size / sizeof(T);
-
-    static void allocate_chunk()
-    {
-        s_free.ensure_capacity(per_block);
-
-        uintptr_t start = __atomic_fetch_add(
-                &g_slabs_bump_pointer, slab_size,
-                __ATOMIC_SEQ_CST);
-
-        T *current = reinterpret_cast<T*>(start);
-        T *end = util::offset_pointer(current, slab_size);
-        while (current < end)
-            s_free.append(current++);
-    }
-
-    static util::vector<T*> s_free;
-};
-
-template <typename T, unsigned N>
-util::vector<T*> slab_allocated<T,N>::s_free;
-
-#define DEFINE_SLAB_ALLOCATOR(type) \
-    template<> util::vector<typename type*> slab_allocated<typename type, type::slab_pages>::s_free {};