Unlock a read-write lock
#include <pthread.h> int pthread_rwlock_unlock( pthread_rwlock_t* rwl );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The pthread_rwlock_unlock() function unlocks a read-write lock referenced by rwl. The read-write lock may become available for any threads that were blocked on the read-write lock, depending on whether the read-write lock had been locked in exclusive or shared mode.
|The read-write lock should be owned by the calling thread. If the calling thread doesn't hold the lock, no error status is returned, and the behavior of this read-write lock is now undefined.|
POSIX 1003.1 THR
pthread_rwlock_destroy(), pthread_rwlock_init(), pthread_rwlock_rdlock(), pthread_rwlock_tryrdlock(), pthread_rwlock_trywrlock(), pthread_rwlock_wrlock()
Processes and Threads chapter of Getting Started with QNX Neutrino