Compare threading features with other libraries

Functionality	xtd	std	Boost	Qt	wxWidgets	Poco	ACE	TBB	Comments / Roadmap
Mutex re-entering	✅	✅ (recursive_mutex)	✅	✅ (QRecursiveMutex)	✅	✅ (FastMutex)	✅	✅	Default Recursive
Mutex non-re-entrant	✅	✅	✅	✅ (QMutex)	✅	✅	✅	✅
Named Mutex / inter-process	✅	❌	❌	✅ (QSystemSemaphore/QSharedMemory)	✅	✅	✅	❌	Unique to xtd for simple API
Semaphore	✅	✅ (counting_semaphore)	✅	✅ (QSystemSemaphore)	✅	✅	✅	❌
Named Semaphore / inter-process	✅	❌	❌	✅ (QSystemSemaphore)	❌	✅	✅	❌	Very easy to use
EventWaitHandle / Manual / AutoResetEvent	✅	❌	❌	✅ (QWaitCondition + QMutex)	❌	✅ (Event)	✅	❌	Inter-process support if named
Monitor-style / lock_guard	✅	❌	❌	❌	❌	❌	❌	❌	lock on monitor, lock_guard on mutex
SpinLock	✅	❌	❌	❌	❌	❌	✅	✅
Barrier / CountdownEvent	✅	❌	✅	❌	❌	❌	✅	✅
Thread / jthread / thread_start	✅	✅	✅	✅ (QThread)	✅	✅	✅	✅	jthread = Automatic joint
ThreadPool	✅	❌	✅ (Boost::asio/threadpool)	✅ (QThreadPool)	❌	✅	✅	✅	Timer can run via thread pool
Thread exceptions / Abort / Interrupt	✅	❌	❌	❌	❌	❌	✅	❌	Unique to xtd + ACE
Thread local storage	✅	✅ (thread_local)	✅	✅ (QThreadStorage)	✅	✅	✅	✅
Interlocked / atomic operations	✅	✅ (std::atomic)	✅	✅ (QAtomic)	✅	✅	✅	✅
Timer simple	✅ (xtd::timers::timer)	❌	✅	✅ (QTimer)	✅	✅	✅	✅	Regular events, multi-thread safe
Timer on thread pool	✅ (xtd::threading::timer)	❌	✅	✅	❌	✅	✅	✅	Automatic callback on thread pool
Timer UI single-thread	✅ (xtd::forms::timer)	❌	❌	✅ (QTimer)	✅	❌	❌	❌	Execution on UI thread for GUI
Futures / Promises	❌	✅ (std::future)	✅	✅ (QFuture)	❌	✅	✅	✅	Can stay in std, not priority for xtd
Tasks / async abstractions	⚡ (To come)	✅ (std::async)	✅	✅	❌	✅	✅	✅	Will integrate with thread_pool and delegate::begin/end_invoke
Condition complex variables	✅	✅	✅	✅ (QWaitCondition)	✅	✅	✅	✅
Deadlock detection / debugging primitives	❌	❌	❌	❌	❌	❌	✅	❌	automatic detection; but debugging support via thread names, thread_state, and debugger integration (VS, Xcode, gdb)
Priority inheritance mutex	❌	❌	❌	❌	❌	❌	✅	❌	Specialized real-time / embedded use
Thread affinity / CPU pinning	✅	❌	❌	❌	❌	✅	✅	❌	Useful for performance optimization
Cancelable tasks / futures	⚡ (To come)	❌	✅	✅	❌	✅	✅	✅	Xtd can integrate it via task abstraction

Legend

• ✅ = Implemented
• ❌ = Not implemented
• ⚡ = Planned or in progress

See also

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• Guides
• Documentation