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  • JVM Internals

    The following diagram illustrates the Java source code, just-in-time compilation processes and life cycle.

    JIT

    https://dzone.com/refcardz/java-performance-optimization?chapter=2

    Sun Just-In-Time (JIT) Compiler

    The Sun Java JIT compiler, an integral part of the Solaris JVM, can accelerate execution performance many times over previous levels. Long-running, compute-intensive programs show the best performance improvement. 

    JIT Compile Process

    When the JIT compiler environment variable is on (the default), the JVM reads the .class file for interpretation and passes it to the JIT compiler. The JIT compiler then compiles the bytecodes into native code for the platform on which it is running. The next figure illustrates the JIT compile process.

    Figure 1-4 JIT Compile Process


    Graphic

    The following figure shows the functional relationship of the JIT to the Solaris JVM and JRE.

    https://docs.oracle.com/cd/E19455-01/806-3461/ch1intro-3/

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  • 原文地址:https://www.cnblogs.com/feng9exe/p/11051004.html
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