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Side by Side Diff: net/base/host_resolver_impl.h

Issue 7529043: Rename NET_API to NET_EXPORT, and rename NET_TEST to NET_EXPORT_PRIVATE. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef NET_BASE_HOST_RESOLVER_IMPL_H_ 5 #ifndef NET_BASE_HOST_RESOLVER_IMPL_H_
6 #define NET_BASE_HOST_RESOLVER_IMPL_H_ 6 #define NET_BASE_HOST_RESOLVER_IMPL_H_
7 #pragma once 7 #pragma once
8 8
9 #include <vector> 9 #include <vector>
10 10
11 #include "base/basictypes.h" 11 #include "base/basictypes.h"
12 #include "base/gtest_prod_util.h" 12 #include "base/gtest_prod_util.h"
13 #include "base/memory/scoped_ptr.h" 13 #include "base/memory/scoped_ptr.h"
14 #include "base/threading/non_thread_safe.h" 14 #include "base/threading/non_thread_safe.h"
15 #include "base/time.h" 15 #include "base/time.h"
16 #include "net/base/capturing_net_log.h" 16 #include "net/base/capturing_net_log.h"
17 #include "net/base/host_cache.h" 17 #include "net/base/host_cache.h"
18 #include "net/base/host_resolver.h" 18 #include "net/base/host_resolver.h"
19 #include "net/base/host_resolver_proc.h" 19 #include "net/base/host_resolver_proc.h"
20 #include "net/base/net_api.h" 20 #include "net/base/net_export.h"
21 #include "net/base/net_log.h" 21 #include "net/base/net_log.h"
22 #include "net/base/network_change_notifier.h" 22 #include "net/base/network_change_notifier.h"
23 23
24 namespace net { 24 namespace net {
25 25
26 // For each hostname that is requested, HostResolver creates a 26 // For each hostname that is requested, HostResolver creates a
27 // HostResolverImpl::Job. This job gets dispatched to a thread in the global 27 // HostResolverImpl::Job. This job gets dispatched to a thread in the global
28 // WorkerPool, where it runs SystemHostResolverProc(). If requests for that same 28 // WorkerPool, where it runs SystemHostResolverProc(). If requests for that same
29 // host are made while the job is already outstanding, then they are attached 29 // host are made while the job is already outstanding, then they are attached
30 // to the existing job rather than creating a new one. This avoids doing 30 // to the existing job rather than creating a new one. This avoids doing
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52 // threads. 52 // threads.
53 // 53 //
54 // Requests are ordered in the queue based on their priority. 54 // Requests are ordered in the queue based on their priority.
55 // 55 //
56 // Whenever we try to resolve the host, we post a delayed task to check if host 56 // Whenever we try to resolve the host, we post a delayed task to check if host
57 // resolution (OnLookupComplete) is completed or not. If the original attempt 57 // resolution (OnLookupComplete) is completed or not. If the original attempt
58 // hasn't completed, then we start another attempt for host resolution. We take 58 // hasn't completed, then we start another attempt for host resolution. We take
59 // the results from the first attempt that finishes and ignore the results from 59 // the results from the first attempt that finishes and ignore the results from
60 // all other attempts. 60 // all other attempts.
61 61
62 class NET_API HostResolverImpl 62 class NET_EXPORT HostResolverImpl
63 : public HostResolver, 63 : public HostResolver,
64 NON_EXPORTED_BASE(public base::NonThreadSafe), 64 NON_EXPORTED_BASE(public base::NonThreadSafe),
65 public NetworkChangeNotifier::IPAddressObserver { 65 public NetworkChangeNotifier::IPAddressObserver {
66 public: 66 public:
67 // The index into |job_pools_| for the various job pools. Pools with a higher 67 // The index into |job_pools_| for the various job pools. Pools with a higher
68 // index have lower priority. 68 // index have lower priority.
69 // 69 //
70 // Note: This is currently unused, since there is a single pool 70 // Note: This is currently unused, since there is a single pool
71 // for all requests. 71 // for all requests.
72 enum JobPoolIndex { 72 enum JobPoolIndex {
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364 HostResolverFlags additional_resolver_flags_; 364 HostResolverFlags additional_resolver_flags_;
365 365
366 NetLog* net_log_; 366 NetLog* net_log_;
367 367
368 DISALLOW_COPY_AND_ASSIGN(HostResolverImpl); 368 DISALLOW_COPY_AND_ASSIGN(HostResolverImpl);
369 }; 369 };
370 370
371 } // namespace net 371 } // namespace net
372 372
373 #endif // NET_BASE_HOST_RESOLVER_IMPL_H_ 373 #endif // NET_BASE_HOST_RESOLVER_IMPL_H_
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