Rewrite InetAddress' DNS cache.
Replace harmony's two 5-element linked lists with a single 512-element
LinkedHashMap. Greatly reduce the time we spend under locks (and no network
I/O is done under a lock any more!). Take advantage of various properties
of how the cache is used to avoid having to do much explicit work to handle
expiry.
I've also optimized the usual no-SecurityManager/no custom system properties
configuring cache TTLs case (without making the slow path much slower than it
already was).
I've also updated the native method names to correspond to the C functions
they're really wrapping (rather than completely different IPv4-only ones
they probably used to wrap long ago).
I've also improved the InetAddress documentation.
Bug: 2320435
5 files changed