1 files changed, 119 insertions, 0 deletions
diff --git a/ml/dlib/dlib/memory_manager_stateless/memory_manager_stateless_kernel_2.h b/ml/dlib/dlib/memory_manager_stateless/memory_manager_stateless_kernel_2.h
new file mode 100644
index 000000000..7c4bf76f5
--- /dev/null
+++ b/ml/dlib/dlib/memory_manager_stateless/memory_manager_stateless_kernel_2.h
@@ -0,0 +1,119 @@
+// Copyright (C) 2006  Davis E. King (davis@dlib.net)
+// License: Boost Software License   See LICENSE.txt for the full license.
+#ifndef DLIB_MEMORY_MANAGER_STATELESs_2_
+#define DLIB_MEMORY_MANAGER_STATELESs_2_
+
+#include "../algs.h"
+#include "memory_manager_stateless_kernel_abstract.h"
+#include "../threads.h"
+
+namespace dlib
+{
+    template <
+        typename T,
+        typename mem_manager 
+        >
+    class memory_manager_stateless_kernel_2
+    {
+        /*!      
+            REQUIREMENTS ON mem_manager
+                mem_manager must be an implementation of memory_manager/memory_manager_kernel_abstract.h
+
+            CONVENTION
+                this object has a single global instance of mem_manager 
+        !*/
+
+        public:
+
+            typedef T type;
+            const static bool is_stateless = true;
+
+            template <typename U>
+            struct rebind {
+                typedef memory_manager_stateless_kernel_2<U,mem_manager> other;
+            };
+
+            memory_manager_stateless_kernel_2(
+            )
+            { 
+                // call this just to make sure the mutex is is initialized before 
+                // multiple threads start calling the member functions.
+                global_mutex();
+            }
+
+            virtual ~memory_manager_stateless_kernel_2(
+            ) {}
+
+            T* allocate (
+            )
+            {
+                auto_mutex M(global_mutex());
+                return global_mm().allocate();
+            }
+
+            void deallocate (
+                T* item
+            )
+            {
+                auto_mutex M(global_mutex());
+                return global_mm().deallocate(item);
+            }
+
+            T* allocate_array (
+                unsigned long size
+            ) 
+            { 
+                auto_mutex M(global_mutex());
+                return global_mm().allocate_array(size);
+            }
+
+            void deallocate_array (
+                T* item
+            ) 
+            { 
+                auto_mutex M(global_mutex());
+                return global_mm().deallocate_array(item);
+            }
+
+            void swap (memory_manager_stateless_kernel_2&)
+            {}
+
+        private:
+
+            static mutex& global_mutex (
+            )
+            {
+                static mutex lock;
+                return lock;
+            }
+
+            typedef typename mem_manager::template rebind<T>::other rebound_mm_type; 
+
+            static rebound_mm_type& global_mm (
+            ) 
+            {
+                static rebound_mm_type mm;
+                return mm;
+            }
+
+            // restricted functions
+            memory_manager_stateless_kernel_2(memory_manager_stateless_kernel_2&);        // copy constructor
+            memory_manager_stateless_kernel_2& operator=(memory_manager_stateless_kernel_2&);    // assignment operator
+    };
+
+    template <
+        typename T,
+        typename mem_manager
+        >
+    inline void swap (
+        memory_manager_stateless_kernel_2<T,mem_manager>& a, 
+        memory_manager_stateless_kernel_2<T,mem_manager>& b 
+    ) { a.swap(b); }   
+
+}
+
+#endif // DLIB_MEMORY_MANAGER_STATELESs_2_
+
+
+
+