Crate jvmrs 

JVMRS - JVM implementation in Rust

Module Organization

Core / Runtime

• class_file - Class file parsing
• class_loader - Class loading from classpath
• class_cache - Fast binary cache (.jvmc)
• memory - Heap, stack frames, values
• allocator - Arena-based allocation
• gc - Garbage collection

Execution

• interpreter - Bytecode execution engine
• native - Native method dispatch
• reflection - Runtime introspection

Compilation

• jit - JIT manager, tiered compilation
• cranelift_jit - Cranelift bytecode-to-native
• aot_compiler - AOT to object files
• wasm_backend - WebAssembly emission (feature: wasm)

Developer Tools

• debug - Logging, trace config
• profiler - Flame graphs, hotspots
• trace - Time-travel debugging
• deterministic - Reproducible execution

Optional Features

• ffi - C API (feature: ffi)
• interop - Java/Rust interop (feature: interop)
• async_io - Async class loading (feature: async)
• simd - Vectorized arrays (feature: simd)
• truffle - Language frontend API (feature: truffle)
• security, aop, cloud, hot_reload - Additional capabilities

Modules

allocator

Arena-based allocators for better cache locality and reduced fragmentation.

annotations

Annotation parsing from class file attributes.

aop

Proxy-based AOP (Aspect-Oriented Programming) support at runtime.

aot_compiler

AOT Compiler - Ahead-of-time compilation to native object files.

class_cache

Fast class loading with custom binary cache format.

class_file

class_loader

Class loading implementation for JVMRS

cloud

Cloud and distributed computing extensions.

cranelift_jit

Cranelift-based JIT: bytecode-to-native code generation.

debug

deterministic

Deterministic execution mode for real-time, safety-critical, and blockchain systems.

error

Custom error types for JVMRS

extensions

Rust crate integration - plugin system for Java extensions.

gc

Garbage collection: generational GC with parallel collection and ownership-based root tracking for low-pause behavior.

hot_reload

Hot code reloading - replace methods at runtime without restart.

interpreter

JVM bytecode interpreter.

jit

JIT Compilation Module for jvmrs

jni

Java Native Interface (JNI) implementation.

memory

JVM memory: heap, stack frames, values.

native

profiler

Integrated profiler with flame graph export and hotspot detection.

reflection

security

Security instrumentation - runtime vulnerability detection.

serialization

Serialization/deserialization support (java.io.Serializable).

trace

Execution trace recorder - foundation for time-travel debugging.

visualization

Visualization tools for JVM internals.