Add singelton implementation for global heap allocator

2 files changed, 9 insertions, 5 deletions

diff --git a/arch/x86_64/include/arch/memory/heap/global_heap_allocator.hpp b/arch/x86_64/include/arch/memory/heap/global_heap_allocator.hpp
index 871f4f8..f391936 100644
--- a/arch/x86_64/include/arch/memory/heap/global_heap_allocator.hpp
+++ b/arch/x86_64/include/arch/memory/heap/global_heap_allocator.hpp
@@ -12,7 +12,7 @@ namespace teachos::arch::memory::heap
     static auto deallocate(void * pointer, std::size_t size) -> void;
 
   private:
-    static linked_list_allocator allocator;
+    static auto get_underlying_allocator() -> linked_list_allocator &;
   };
 }  // namespace teachos::arch::memory::heap
 
diff --git a/arch/x86_64/src/memory/heap/global_heap_allocator.cpp b/arch/x86_64/src/memory/heap/global_heap_allocator.cpp
index 11848ed..4e3a274 100644
--- a/arch/x86_64/src/memory/heap/global_heap_allocator.cpp
+++ b/arch/x86_64/src/memory/heap/global_heap_allocator.cpp
@@ -5,13 +5,17 @@
 
 namespace teachos::arch::memory::heap
 {
-  static global_heap_allocator::allocator = linked_list_allocator{HEAP_START, HEAP_START + HEAP_SIZE};
-
-  auto global_heap_allocator::allocate(std::size_t size) -> void * { return allocator.allocate(size); }
+  auto global_heap_allocator::allocate(std::size_t size) -> void * { return get_underlying_allocator().allocate(size); }
 
   auto global_heap_allocator::deallocate(void * pointer, std::size_t size) -> void
   {
-    allocator.deallocate(pointer, size);
+    get_underlying_allocator().deallocate(pointer, size);
+  }
+
+  auto global_heap_allocator::get_underlying_allocator() -> linked_list_allocator &
+  {
+    static linked_list_allocator allocator{HEAP_START, HEAP_START + HEAP_SIZE};
+    return allocator;
   }
 }  // namespace teachos::arch::memory::heap