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Add support for deleting per-network DNS resolver caches.

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This is required when the possible range of NetIds is large to
prevent netd consuming excessive amounts of memory.
This required replacing the per-cache locks in favor of a single
global lock to prevent accesses to deleted caches.

Change-Id: I99d058bafea5de743e56075dbed74031da4df63f
This commit is contained in:
Paul Jensen
2014-04-08 15:43:41 -04:00
committed by Lorenzo Colitti
parent 7fbc7481cc
commit 41d9a50371
4 changed files with 100 additions and 73 deletions
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3
libc/dns/include/resolv_netid.h
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@@ -65,6 +65,9 @@ extern void _resolv_set_nameservers_for_net(unsigned netid,
/* flush the cache associated with a certain network */
extern void _resolv_flush_cache_for_net(unsigned netid);
/* delete the cache associated with a certain network */
extern void _resolv_delete_cache_for_net(unsigned netid);
__END_DECLS
#endif /* _RESOLV_NETID_H */