建档

source/Tool/Allocator.cpp

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+// Copyright (c) 2016-2018 Kiwano - Nomango
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#include "Tool/Allocator.h"
+
+namespace memory
+{
+    MemoryAllocator *current_allocator_ = nullptr;
+
+    MemoryAllocator *GetGlobalAllocator()
+    {
+        class GlobalAllocator : public MemoryAllocator
+        {
+        public:
+            virtual void *Alloc(size_t size) override
+            {
+                return ::operator new(size);
+            }
+
+            virtual void Free(void *ptr) override
+            {
+                ::operator delete(ptr);
+            }
+        };
+
+        static GlobalAllocator global_allocator;
+        return &global_allocator;
+    }
+
+    MemoryAllocator *GetAllocator()
+    {
+        if (!current_allocator_)
+        {
+            current_allocator_ = GetGlobalAllocator();
+        }
+        return current_allocator_;
+    }
+
+    void SetAllocator(MemoryAllocator *allocator)
+    {
+        current_allocator_ = allocator;
+    }
+
+} // namespace memory