القائمة
Mastering C++ Concurrency. Triggers: std::thread, jthread, atomic, mutex, deadlock, race condition, memory model, coroutine, async.
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Mastering C++ Ownership: Move Semantics, RAII, and Reference Safety. Triggers: std::move, use-after-free, double-free, dangling pointer, copy elision, RVO, reference qualifiers.
Mastering C++ Smart Pointers: unique_ptr, shared_ptr, weak_ptr. Triggers: memory management, cycles, enable_shared_from_this, make_unique, make_shared, custom deleters.
Mastering C++ Const Correctness and Mutability. Triggers: const, mutable, logically const, bitwise const, data race, mutex, shared_mutex, thread safety.
Mastering C++ Polymorphism: Templates, Concepts, and Virtual Functions. Triggers: templates, concepts, vtable, CRTP, static polymorphism, dynamic polymorphism, SFINAE.
Mastering C++ Type-Driven Design. Triggers: strong types, phantom types, type state pattern, builder pattern, invalid state unrepresentable.
| name | m07-concurrency |
| description | Mastering C++ Concurrency. Triggers: std::thread, jthread, atomic, mutex, deadlock, race condition, memory model, coroutine, async. |
How do threads communicate?
std::mutex) or Atomics (std::atomic).std::condition_variable) or Latches/Semaphores (C++20).std::async or Coroutines (C++20).| Issue | Design Question |
|---|---|
| Data Race | Are two threads accessing memory without a Happens-Before edge? |
| Deadlock | Did you lock Mutex A then B, while another thread locked B then A? |
| False Sharing | Are independent atomics sitting on the same cache line? |
| Live Lock | Are threads spinning without progress? |
Do I need a thread?
std::async or Thread Pool.std::jthread.Is it shared state?
std::mutex.std::atomic.Locks or Atomics?
counter++ is Read-Modify-Write, not atomic. Data race.std::atomic<int>.| Tool | C++ Version | Use When |
|---|---|---|
std::jthread | C++20 | Standard thread (auto-join). |
std::atomic | C++11 | Lock-free counters/flags. |
std::mutex | C++11 | Locking critical sections. |
std::shared_mutex | C++17 | Read-heavy workloads. |
std::latch | C++20 | Waiting for N tasks to start. |
co_await | C++20 | Async I/O (requires library). |