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Unified Diff: net/dns/host_cache.h

Issue 992733002: Remove //net (except for Android test stuff) and sdch (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 9 months ago
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Index: net/dns/host_cache.h
diff --git a/net/dns/host_cache.h b/net/dns/host_cache.h
deleted file mode 100644
index e8628fb04ecbc1b64b6480502d41b94d7cb11a00..0000000000000000000000000000000000000000
--- a/net/dns/host_cache.h
+++ /dev/null
@@ -1,124 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef NET_DNS_HOST_CACHE_H_
-#define NET_DNS_HOST_CACHE_H_
-
-#include <functional>
-#include <string>
-
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/threading/non_thread_safe.h"
-#include "base/time/time.h"
-#include "net/base/address_family.h"
-#include "net/base/address_list.h"
-#include "net/base/expiring_cache.h"
-#include "net/base/net_export.h"
-
-namespace net {
-
-// Cache used by HostResolver to map hostnames to their resolved result.
-class NET_EXPORT HostCache : NON_EXPORTED_BASE(public base::NonThreadSafe) {
- public:
- // Stores the latest address list that was looked up for a hostname.
- struct NET_EXPORT Entry {
- Entry(int error, const AddressList& addrlist, base::TimeDelta ttl);
- // Use when |ttl| is unknown.
- Entry(int error, const AddressList& addrlist);
- ~Entry();
-
- bool has_ttl() const { return ttl >= base::TimeDelta(); }
-
- // The resolve results for this entry.
- int error;
- AddressList addrlist;
- // TTL obtained from the nameserver. Negative if unknown.
- base::TimeDelta ttl;
- };
-
- struct Key {
- Key(const std::string& hostname, AddressFamily address_family,
- HostResolverFlags host_resolver_flags)
- : hostname(hostname),
- address_family(address_family),
- host_resolver_flags(host_resolver_flags) {}
-
- bool operator<(const Key& other) const {
- // |address_family| and |host_resolver_flags| are compared before
- // |hostname| under assumption that integer comparisons are faster than
- // string comparisons.
- if (address_family != other.address_family)
- return address_family < other.address_family;
- if (host_resolver_flags != other.host_resolver_flags)
- return host_resolver_flags < other.host_resolver_flags;
- return hostname < other.hostname;
- }
-
- std::string hostname;
- AddressFamily address_family;
- HostResolverFlags host_resolver_flags;
- };
-
- struct EvictionHandler {
- void Handle(const Key& key,
- const Entry& entry,
- const base::TimeTicks& expiration,
- const base::TimeTicks& now,
- bool onGet) const;
- };
-
- typedef ExpiringCache<Key, Entry, base::TimeTicks,
- std::less<base::TimeTicks>,
- EvictionHandler> EntryMap;
-
- // Constructs a HostCache that stores up to |max_entries|.
- explicit HostCache(size_t max_entries);
-
- ~HostCache();
-
- // Returns a pointer to the entry for |key|, which is valid at time
- // |now|. If there is no such entry, returns NULL.
- const Entry* Lookup(const Key& key, base::TimeTicks now);
-
- // Overwrites or creates an entry for |key|.
- // |entry| is the value to set, |now| is the current time
- // |ttl| is the "time to live".
- void Set(const Key& key,
- const Entry& entry,
- base::TimeTicks now,
- base::TimeDelta ttl);
-
- // Empties the cache
- void clear();
-
- // Returns the number of entries in the cache.
- size_t size() const;
-
- // Following are used by net_internals UI.
- size_t max_entries() const;
-
- const EntryMap& entries() const;
-
- // Creates a default cache.
- static scoped_ptr<HostCache> CreateDefaultCache();
-
- private:
- FRIEND_TEST_ALL_PREFIXES(HostCacheTest, NoCache);
-
- // Returns true if this HostCache can contain no entries.
- bool caching_is_disabled() const {
- return entries_.max_entries() == 0;
- }
-
- // Map from hostname (presumably in lowercase canonicalized format) to
- // a resolved result entry.
- EntryMap entries_;
-
- DISALLOW_COPY_AND_ASSIGN(HostCache);
-};
-
-} // namespace net
-
-#endif // NET_DNS_HOST_CACHE_H_
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