Add new/delete-like functions but with Results

kernel/src/main.cpp

@@ -102,7 +102,7 @@ extern "C" [[noreturn]] void _start()
 
     usize start = 0;
 
-    int* mem = (int*)kmalloc(sizeof(int)).release_value();
+    int* mem = make<int>().release_value();
     *(volatile int*)mem = 6;
     Serial::printf("Read %d from memory\n", *mem);
 
@@ -110,7 +110,7 @@ extern "C" [[noreturn]] void _start()
 
     Serial::printf("Resized to %p\n", (void*)mem);
 
-    kfree(mem);
+    destroy(mem).release_value();
 
     while (1)
     {

kernel/src/memory/Heap.h

@@ -1,7 +1,20 @@
 #pragma once
+#include <PlacementNew.h>
 #include <Result.h>
 
 Result<void*> kmalloc(usize size);
 Result<void*> kcalloc(usize nmemb, usize size);
 Result<void*> krealloc(void* ptr, usize size);
-Result<void> kfree(void* ptr);
+Result<void> kfree(void* ptr);
+
+template <typename T> Result<T*> make()
+{
+    void* ptr = TRY(kcalloc(1, sizeof(T)));
+    return new (ptr) T;
+}
+
+template <typename T> Result<void> destroy(T* item)
+{
+    item->~T();
+    return kfree(item);
+}