Currently, I am incorporating Mozilla Rhino in my application and I require the use of a C/C++ library. Are there any alternative methods available to access this library apart from directly calling on c/C++ functions through Java?
Currently, I am incorporating Mozilla Rhino in my application and I require the use of a C/C++ library. Are there any alternative methods available to access this library apart from directly calling on c/C++ functions through Java?
Directly calling C / C++ functions from Javascript is not possible.
One workaround is to create a Java wrapper class that can communicate with C / C++ native code, and then call methods on this wrapper class from Javascript. If you choose this route, look for tutorials on using JNA or JNI for seamless interoperability between Java and C / C++.
However, there are some challenges associated with this approach:
The C / C++ code will run within the same memory space as the JVM. Errors in the C / C++ code may cause the JVM to crash abruptly, posing difficulties in identifying and fixing such issues.
Most C / C++ code is not designed to be thread-safe. Calling it from multi-threaded Java code can lead to unexpected outcomes, as mentioned earlier.
The sequence of calls from Javascript to Java and then to C++ may introduce performance overheads. It's common for individuals to turn to C / C++ for better performance, only to find that it actually slows down their application.
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