Reorganise memory utilities

src/os/mem/win/mem_os_win.h

@@ -0,0 +1,27 @@
+#ifndef MEM_OS_WIN_H
+#define MEM_OS_WIN_H
+
+#include "platform.h"
+
+#ifdef __cplusplus
+BEGIN_C_LINKAGE
+#endif // !__cplusplus
+
+#ifdef WAPP_PLATFORM_WINDOWS
+
+#define WIN32_LEAN_AND_MEAN
+#include <Windows.h>
+#include <memoryapi.h>
+
+typedef enum mem_alloc_flags {
+  WAPP_MEM_ALLOC_RESERVE = MEM_RESERVE,
+  WAPP_MEM_ALLOC_COMMIT  = MEM_COMMIT,
+} MemAllocFlags;
+
+#endif // !WAPP_PLATFORM_WINDOWS
+
+#ifdef __cplusplus
+END_C_LINKAGE
+#endif // !__cplusplus
+
+#endif // !MEM_OS_WIN_H