intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 27 insertions, 0 deletions

diff --git a/util/memory/alloc.h b/util/memory/alloc.h
new file mode 100644
index 0000000000..d59575aef5
--- /dev/null
+++ b/util/memory/alloc.h
@@ -0,0 +1,27 @@
+#pragma once
+
+#include <memory>
+
+template <class Allocator, class T>
+using TReboundAllocator = typename std::allocator_traits<Allocator>::template rebind_alloc<T>;
+
+class IAllocator {
+public:
+    struct TBlock {
+        void* Data;
+        size_t Len;
+    };
+
+    virtual ~IAllocator() = default;
+
+    virtual TBlock Allocate(size_t len) = 0;
+    virtual void Release(const TBlock& block) = 0;
+};
+
+class TDefaultAllocator: public IAllocator {
+public:
+    TBlock Allocate(size_t len) override;
+    void Release(const TBlock& block) override;
+
+    static IAllocator* Instance() noexcept;
+};