Wait on queue in rwlock
Wait on queue in rwlock

Use an external untrusted wait queue to avoid indefinite spinning in
pthread_rwlock_t locking functions.

PiperOrigin-RevId: 309270505
Change-Id: I5cdbbfbb43f5a471171621b8a35101dd2ec22574

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo