On 12/08/2014 10:24 PM, Peter Levart wrote:
"Interned" Types can not be guaranteed, since they are rooted on
members of j.l.Class (Method, Field, Constructor), which can be GC-ed
because of either:
- class redefinition
- memory pressure (see j.l.Class.reflectionData field, which points to
SoftReference<ReflectionData>)
...and next time you request them, new instances will be created and
new instances of Types with them.
Regards, Peter
Even in the absence of above, the Method, Field, Constructor objects
obtained from j.l.Class methods are always copied from the "root"
objects (because they are mutable - setAccessible()) and with copying,
you always get a "fresh" object that has an uninitialized 'genericInfo'
field.
Even in the absence of all above, by CAS-ing, you don't actually get
"interning", since two Type objects from different sources (for example
generic return types of two different methods) can be equal, but they
will not be same objects. So I can't see a purpose here. We would have
to implement Type interning in a global pool to achieve that (like it is
guaranteed for j.l.Class objects).
Regards, Peter
