c++/cli can theoretically be used with WPF/Silverlight using the trick of replacing the C# generated from the XAML with a macro definition that can be used inside the main class in a code behind file. I worked out this technique but haven’t had the motivation to take it beyond theory – I’m quite happy mixing … Read more
Memory. It can be cached, that’s the job of ngen.exe. It generates a .ni.dll version of the assembly, containing machine code and stored in the GAC. Which automatically gets loaded afterward, bypassing the JIT step. But that has little to do with why your program starts faster the 2nd time. The 1st time you have … Read more
Memory. It can be cached, that’s the job of ngen.exe. It generates a .ni.dll version of the assembly, containing machine code and stored in the GAC. Which automatically gets loaded afterward, bypassing the JIT step. But that has little to do with why your program starts faster the 2nd time. The 1st time you have … Read more
While debugging your application in Visual Studio, you can right-click on a code where you have stopped (using breakpoint) and click “Go to Disassembly”. You can debug through native instructions. As for doing that with *.exe files on disk, maybe you could use NGen to generate native output and then disassemble it (although I never … Read more
Summary: try to allocate memory near your static code. But for calls that can’t reach with rel32, fall back to call qword [rel pointer] or inline mov r64,imm64 / call r64. Your mechanism 5. is probably best for performance if you can’t make 2. work, but 4. is easy and should be fine. Direct call … Read more
I recommend reading Generics in C#, Java, and C++: A Conversation with Anders Hejlsberg. Qn 1. How do generics get compiled by the JIT compiler? From the interview: Anders Hejlsberg: […] In the CLR [Common Language Runtime], when you compile List, or any other generic type, it compiles down to IL [Intermediate Language] and metadata … Read more
Greater portability: The deliverable (byte-code) stays portable At the same time, more platform-specific: Because the JIT-compilation takes place on the same system that the code runs, it can be very, very fine-tuned for that particular system. If you do ahead-of-time compilation (and still want to ship the same package to everyone), you have to compromise. … Read more
NOTE: PyPy is more mature and better supported now than it was in 2013, when this question was asked. Avoid drawing conclusions from out-of-date information. PyPy, as others have been quick to mention, has tenuous support for C extensions. It has support, but typically at slower-than-Python speeds and it’s iffy at best. Hence a lot … Read more
HotSpot JIT inlining policy is rather complicated. It involves many heuristics like caller method size, callee method size, IR node count, inlining depth, invocation count, call site count, throw count, method signatures etc. Some limits are skipped for accessor methods (getters/setters) and for trivial methods (bytecode count less than 6). The related source code is … Read more
In Visual Studio place a breakpoint in the code and start debugging. When it breaks, open the Disassembly window (Debug > Windows > Disassembly or Alt+Ctrl+D).