pthread_rwlock t1;
pthread_rwlock_wrlock(&t1);
pthread_rwlock t2 = t1;
what happend?
is t2 locked or not?
pthread_rwlock t1; pthread_rwlock_wrlock(&t1); pthread_rwlock t2 = t1; what happend? is t2 locked or not?
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pthread_rwlock t1;
pthread_rwlock_wrlock(&t1);
pthread_rwlock t2 = t1;
what happend?
is t2 locked or not?
Nothing special happens.
pthread_rwlock_t(notpthread_rwlock, AFAIK) is an opaque C struct. Copying the variable simply copies the struct, byte for byte.At the Pthreads level, copying a
pthread_rwlock_tresults in undefined behaviour. Don’t do it.