Cnd_wait
cnd_wait is a C threads-library function that atomically releases a mutex while waiting on a condition variable and reacquires it before returning.
Modern C, Third Edition
cnd_wait is a C threads-library function that atomically releases a mutex while waiting on a condition variable and reacquires it before returning.
- How it is used
- Coordinates worker threads that wait for protected state to satisfy a condition before entering their critical sections.
- How deep it goes
- Explains mutex release, reacquisition, signaling, early returns, and condition-loop discipline, but not implementation internals.
- Examples
- Uses account, update, and draw threads waiting in mutex-protected loops for iteration, completion, or display-state changes.
- What you can do after
- Apply cnd_wait through a mutex-protected while loop that safely waits for and rechecks shared state.
Modern C
cnd_wait is a C standard threads function that atomically releases a mutex while waiting on a condition variable and reacquires the mutex before returning.
- How it is used
- Coordinates worker threads that wait for protected shared-state conditions before performing work.
- How deep it goes
- Explains mutex handoff, predicate loops, signaling, and coupling rules, but defers implementation internals.
- Examples
- Uses account, update, and draw threads waiting on distinct predicates protected by one mutex.
- What you can do after
- Apply cnd_wait in a mutex-protected predicate loop and coordinate wakeups with condition-variable signaling.
Related concepts
- lockinguses · Locking is a synchronization technique that restricts concurrent access to shared resources or protected operations.
- cnd_timedwaitalternative to · cnd_timedwait is a C threads-library function that atomically releases a mutex while waiting on a condition variable, then reacquires it after notification or an absolute timeout.
These guides are generated from the text of Manning books by Manning's knowledge graph and link to the sections they draw on. The full books are available on liveBook and at manning.com.