I remember seeing this codd an thinking that synchronized should do the job. I don't believe this use case requires something more complex.
Remi Le 21 avril 2016 18:21:55 CEST, Alan Bateman <alan.bate...@oracle.com> a écrit : > > >On 21/04/2016 17:07, Peter Levart wrote: >> : >> >> ...while this seems OK from 1st look, it is not. WeakHashMap is not >> thread-safe even for seemingly read-only operations. All its >> operations can mutate internal state in a non-thread-safe way. The >> simplest way to fix this is to use a writeLock for containsKey >> operation too. But such structure does not scale well to multiple >> threads for frequent lookups. >Sigh, it's a left over from early prototyping and was meant to be >replaced (but wasn't). Now seems the right time. > >-Alan
