Symbol: __lwp_rwlock_wrlock
usr/src/lib/libc/inc/thr_uberdata.h
1530
extern int __lwp_rwlock_wrlock(rwlock_t *, timespec_t *);
usr/src/lib/libc/port/threads/rwlock.c
564
error = __lwp_rwlock_wrlock(rwlp, tsp);