Multithreading: Condition Variables
Explore how condition variables synchronize threads in C++ and understand common pitfalls like lost and spurious wakeups. Learn to use predicates properly to avoid race conditions, and discover when promises, futures, and std::async provide better alternatives for thread synchronization.
Condition Variables
Synchronizing threads via notifications is a simple concept, but condition variables make this task really challenging - mostly because the condition variables have no state.
- If a condition variable gets a notification, it may be the wrong one spurious wakeup.
- If a condition variable gets its notification before it was ready, the notification will be lost lost wakeup.
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