[viofs] Extract SCOPE_EXIT macro from utils.h

Signed-off-by: Vitalii Chulak <vitalii@daynix.com>

Author: Vitalii Chulak

viofs/svc/scope_exit.h

@@ -0,0 +1,13 @@
+template <typename EF> class scope_exit
+{
+    EF exit_func;
+
+  public:
+    scope_exit(EF &&exit_func) : exit_func{exit_func} {};
+    ~scope_exit()
+    {
+        exit_func();
+    }
+};
+
+#define SCOPE_EXIT(x, action, ...) scope_exit x##_se([x, __VA_ARGS__] action);

viofs/svc/utils.h

@@ -34,6 +34,7 @@
 #include <functional>
 #include <memory>
 #include <string>
+#include "scope_exit.h"
 
 template <typename EF>
 class scope_exit

viofs/svc/virtiofs.vcxproj

@@ -272,10 +272,11 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="fusereq.h" />
+    <ClInclude Include="scope_exit.h" />
     <ClInclude Include="utils.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <Import Project="$(MSBuildProjectDirectory)\..\..\build\Driver.Common.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>
-</Project>
+</Project>