Interfacing with the XPCOM cycle collector
this is the idle stage of the collector's operation, in which special variants of nsautorefcnt register and unregister themselves very rapidly with the collector, as they pass through a "suspicious" refcount event (from n+1 to n, for nonzero n).
... it does not suspect any pointers by default; objects must suspect themselves, typically by using an nscyclecollectingautorefcnt rather than a nsautorefcnt.

Index
this is done using the functions addref() and release(), which respectively modify a variable of type nsautorefcnt, which basically is a wrapper around a count of the number of references refering to the class.

RefPtr
this is done using the functions addref() and release(), which respectively modify a variable of type nsautorefcnt, which basically is a wrapper around a count of the number of references refering to the class.

XPCOM glue classes
this is done using the functions addref() and release(), which respectively modify a variable of type nsautorefcnt, which basically is a wrapper around a count of the number of references refering to the class.nsstringclass declarationnsstring externalclass declarationnsstringcontainer (external)class declarationnssupportsweakreferenceinherit from this c++ class to add canonical support for nsisupportsweakreference.nsxpidlcstringclass declarationnsxpidlstringclass declarationpromiseflatcstring (external)class...