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This section describes the architecture of the Jikes RVM. The RVM can be divided into the following components:

  • Core Runtime Services: (thread scheduler, class loader, library support, verifier, etc.) This element is responsible for managing all the underlying data structures required to execute applications and interfacing with libraries.
  • Compilers: (baseline, optimizing, JNI) This component is responsible for generating executable code from bytecodes.
  • Memory managers: This component is responsible for the allocation and collection of objects during the execution of an application.
  • Adaptive optimization system: This component is responsible for profiling an executing application and judiciously using the optimizing compiler to improve its performance.

The RVM also includes a number of supporting components that can be optionall included:

  • GCSpy: GCspy is a visualisation framework that allows developers to observe the behaviour of the heap and related data structures.
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