Add allocator, start work on box

asl/allocator.cpp

@@ -0,0 +1,38 @@
+#include "asl/allocator.hpp"
+#include "asl/assert.hpp"
+#include "asl/utility.hpp"
+#include "asl/memory.hpp"
+
+#include <cstdlib>
+
+// @Todo zalloc
+// @Todo Cookies
+// @Todo Debug values
+
+void* asl::GlobalHeap::alloc(const layout& layout)
+{
+    void* ptr = ::_aligned_malloc(
+        static_cast<size_t>(layout.size),
+        static_cast<size_t>(layout.align));
+    ASL_ASSERT(ptr != nullptr); // @Todo panic
+    return ptr;
+}
+
+void* asl::GlobalHeap::realloc(void* old_ptr, const layout& old_layout, const layout& new_layout)
+{
+    if (new_layout.align <= old_layout.align)
+    {
+        void* new_ptr = ::realloc(old_ptr, static_cast<size_t>(new_layout.size));
+        ASL_ASSERT(new_ptr != nullptr); // @Todo panic
+        return new_ptr;
+    }
+
+    void* new_ptr = alloc(new_layout);
+    asl::memcpy(new_ptr, old_ptr, asl::min(old_layout.size, new_layout.size));
+    return new_ptr;
+}
+
+void asl::GlobalHeap::dealloc(void* ptr, const layout&)
+{
+    ::free(ptr);
+}