p99_rwl_haswaiters p99_rwl_islocked p99_rwl_rdlock p99_rwl_unlock p99_rwl_wrlock

p99_rwl_rdlock() int p99_rwl_rdlock ( p99_rwl volatile *  p00_r ) related establish a shared lock for rwlock p00_c. This will inhibit to take an exclusive lock for anybody. Remarks blocks until the lock can be achieved or until an error is detected. Returns EAGAIN if there are already too many lockers, 0 in all other cases Definition at line 122 of file p99_rwl.h. References p99_futex::P99_FUTEX_COMPARE_EXCHANGE.