pthread_rwlock_t Struct Reference

A fair reader writer lock. More...

Detailed Description

A fair reader writer lock.

The implementation ensures that readers and writers of the same priority won't starve each other. E.g. no new readers will get into the critical section if a writer of the same or a higher priority already waits for the lock.

Definition at line 37 of file pthread_rwlock.h.

#include <pthread_rwlock.h>

Data Fields
int	readers
	The current amount of reader inside the critical section.
priority_queue_t	queue
	Queue of waiting threads.
mutex_t	mutex
	Provides mutual exclusion on reading and writing on the structure.

Field Documentation

mutex

mutex_t pthread_rwlock_t::mutex

Provides mutual exclusion on reading and writing on the structure.

Definition at line 56 of file pthread_rwlock.h.

queue

priority_queue_t pthread_rwlock_t::queue

Queue of waiting threads.

Definition at line 51 of file pthread_rwlock.h.

readers

int pthread_rwlock_t::readers

The current amount of reader inside the critical section.

• == 0: no thread is in the critical section.
• > 0: the number of readers currently in the critical section.
• < 0: a writer is currently in the critical section.

Definition at line 46 of file pthread_rwlock.h.

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The documentation for this struct was generated from the following file:

• sys/posix/pthread/include/pthread_rwlock.h