ROCS

Reusable Object-oriented Concurrency System — a C++20 framework plus a concrete Linux NBD (Network Block Device) storage path.

What's inside

framework/

Component	Role
ThreadPool	Command queue, suspend/resume, dynamic resize
WPriorityQueue	Thread-safe priority queue (mutex + condition_variable)
Singleton	Double-checked locking with atomics + cleanup
Factory	Key → creator registry (singleton-backed)
Message broker	Dispatcher / Callback pub-sub
PlugNPlay (PnP)	inotify DirMonitor + dlopen SOLoader for hot-loading plugins
Logger	Leveled, thread-aware logging

concrete/

Component	Role
NBDDriverCommunicator	Talks to the Linux NBD interface (sockets + listener thread)
RamStorage	In-memory block storage behind IStorage

plugins/

Drop folder for shared-object plugins. PnP watches plugins/watch/ and loads new .so files at runtime (SOLoader).

Layout

rocs/
├── framework/
│   ├── include/ interface/ template/ src/ test/ utils/
│   └── Makefile
├── concrete/
│   ├── include/ interface/ src/ test/
│   └── Makefile
├── plugins/
│   ├── src/att_ctor.cpp   # sample plugin constructor
│   └── watch/             # runtime drop directory
├── log/                   # created on build
├── Makefile
└── README.md

Requirements

• Linux (NBD, inotify, dlopen)
• g++ with C++20
• pthread, dl

Build & Run

# from rocs/
make                 # builds framework + concrete tests
make -C framework test_thread_pool && ./framework/bin/test_thread_pool
make -C framework test_pnp && ./framework/bin/test_pnp
make -C concrete test_ram_storage && ./concrete/bin/test_ram_storage