Home/ Questions/Q 932253
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T20:38:13+00:00

I am exploring a solution at my client where we have to call an

  • 0

I am exploring a solution at my client where we have to call an API that is available in both C# and Java from our C++ application. We would like this to be a cross platform application (PC & Mac), so Java is preferred, but performance is more important. I’ve been trying to do some research on the performance of C++ calls to C# vs Java but haven’t found any solid information. The idea is to use JNI to call the Java API or managed C++ to call the C# API.

Does anyone out there have information or insight as to what would be better performance wise? These calls will potentially be performed heavily, so volume does come into play.

Thanks!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    I cannot offer you a definitive answer, but I have done JNI to C library calls (not the reverse), .NET to wrapped Java library calls, and .NET to .NET library calls. I don’t have official numbers on any of them, but the .NET to .NET calls, whether managed C++ or C# were both the easiest and fastest. Because they were both .NET, there was a common set of datatypes supported on both sides. In the other instances, there was lots of ugly marshaling code required to convert between datatypes in different languages. The .NET Framework was designed with the intent that calls between different .NET libraries would be transparent of their original language and it does this very well.

    Another consideration is that in a high-volume environment, the performance of the individual libraries may be a bigger concern than the interop performance. In other words, if the Java library is 25% faster than the C# library, it may make sense to use the Java library even if the interop with C# is faster and easier than with Java.

    • 0