From 00c0d78199fcfbbb20828be5e06fd2d271fa4c1e Mon Sep 17 00:00:00 2001
From: Steven Le Rouzic <steven.lerouzic@gmail.com>
Date: Sun, 24 Mar 2024 23:49:26 +0100
Subject: Initial commit

---
 deimos/core/allocator.cpp | 55 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 deimos/core/allocator.cpp

(limited to 'deimos/core/allocator.cpp')

diff --git a/deimos/core/allocator.cpp b/deimos/core/allocator.cpp
new file mode 100644
index 0000000..a525bfd
--- /dev/null
+++ b/deimos/core/allocator.cpp
@@ -0,0 +1,55 @@
+#include "deimos/core/allocator.h"
+
+#include <cstdlib>
+
+namespace deimos
+{
+
+class SystemAllocatorImpl : public IAllocator
+{
+public:
+    SystemAllocatorImpl() : IAllocator(MemoryScope{0}) {}
+
+    void* Reallocate(
+        void* old_ptr, int64 /* old_size */, int64 new_size,
+        const char* /* file */, int32 /* line */) override
+    {
+        if (old_ptr == nullptr)
+        {
+            return new_size > 0 ? ::malloc((uint64)new_size) : nullptr;
+        }
+
+        if (new_size == 0)
+        {
+            if (old_ptr != nullptr)
+            {
+                ::free(old_ptr);
+            }
+        }
+        else
+        {
+            return ::realloc(old_ptr, (uint64)new_size);
+        }
+        return nullptr;
+    }
+};
+
+class AllocatorApiImpl : public AllocatorApi
+{
+    SystemAllocatorImpl m_system_impl;
+
+public:
+    AllocatorApiImpl()
+    {
+        system = &m_system_impl;
+    }
+};
+
+AllocatorApi* BootstrapAllocatorApi()
+{
+    static AllocatorApiImpl g_instance{};
+    return &g_instance;
+}
+
+} // namespace deimos
+
-- 
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