I am wondering whether I can access concurrent_hash_map in the non-blocking fashion.
If I understand correctly,

bool find( accessor& result, const Key& key )

would acquire the write lock, and other threads trying to acquire the write lock for the same key would wait until
the write lock is released, right?

Is it possible for me to just 'try' the write lock? That is, a thread will try to acquire the write lock,
but if the entry is already write-locked then I would like to make it move on rather than being blocked
until the write lock gets released.

Thanks in advance,
Hyokun Yun