Searched refs:prevcnt (Results 1 – 1 of 1) sorted by relevance
414 isc_int32_t prevcnt; in isc_rwlock_tryupgrade() local419 prevcnt = isc_atomic_cmpxchg(&rwl->cnt_and_flag, in isc_rwlock_tryupgrade()425 INSIST((prevcnt & WRITER_ACTIVE) == 0 && in isc_rwlock_tryupgrade()426 (prevcnt & ~WRITER_ACTIVE) != 0); in isc_rwlock_tryupgrade()428 if (prevcnt == READER_INCR) { in isc_rwlock_tryupgrade()