|parrotcode: A DOD Registry PMC|
|Contents | PMCs|
src/pmc/addrregistry.pmc - A DOD Registry PMC
The AddrRegistry class provides the equivalence of reference counts mainly for extenders and embeders of Parrot. The hash keys are the addresses of the key PMC, values are reference counts, i.e. the difference of (set_pmc_keyed - delete_pmc_keyed). If the reference goes to zero, the entry is deleted physically.
Please note that you have to anchor an instance of AddrRegistry yourself e.g.
Parrot_register_pmc if it isn't visible to Parrot.
INTVAL get_integer_keyed(PMC *key)
keyor 0, if the key doesn't exist.
void set_pmc_keyed(PMC *key, PMC *value)
key. If the entry doesn't exist create it. The
valueis always ignored.
void set_integer_keyed(PMC *key, INTVAL value)
void delete_keyed(PMC *key)
key. If the reference count reaches 0, delete the entry.
PMC *get_iter ()
PMC *get_pmc_keyed(PMC *key)