Around IT In 256 Seconds By Tomasz Nurkiewicz

Podcast for developers, testers, SREs… and their managers. I explain complex and convoluted technologies in a clear way, avoiding buzzwords and hype. Never longer than 4 minutes and 16 seconds.

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13 October 2020

#18: JIT: bytecode, interpreters and compilers

by Tomasz Nurkiewicz

Source code can then be executed in two ways. Language implementations in general either interpret or compile it. In order to run an interpreted program you need one extra binary: an interpreter. Interpretation is simple: you read source code line by line and execute it. The compilation is much harder. A special program called a compiler reads your source code ahead of time (AOT) and translates it into machine code. After this translation your program is standalone. You don’t need a compiler to run it. Only you and your CPU.

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tags: compiler - interpreter - python - cpython - ruby - cruby - php - java - .NET - JIT - AOT