Add return hold buffer if function

include/memory-faucet.h

@@ -42,5 +42,6 @@ public:
     const void* ptr() const;
     void free_memory();
     int get_size() const;
+    int get_id() const;
     void get_memory(const size_t required_size);
 };
\ No newline at end of file

src/memory-faucet.cpp

@@ -103,6 +103,12 @@ int memBuf<mem, choose_type>::get_size() const
     return size;
 }
 
+template< MemType mem, buf_choose_policy choose_type >
+int memBuf<mem, choose_type>::get_id() const
+{
+    return id;
+}
+
 template< MemType mem, buf_choose_policy choose_type >
 memBuf<mem, choose_type>::memBuf() 
 {