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wait_url_async_fetcher.h
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1 /*
2  * Copyright 2010 Google Inc.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http:///www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
18 
19 #ifndef NET_INSTAWEB_HTTP_PUBLIC_WAIT_URL_ASYNC_FETCHER_H_
20 #define NET_INSTAWEB_HTTP_PUBLIC_WAIT_URL_ASYNC_FETCHER_H_
21 
22 #include <vector>
23 
28 
29 namespace net_instaweb {
30 
31 class AsyncFetch;
32 class AbstractMutex;
33 class MessageHandler;
34 
38  public:
40  AbstractMutex* mutex)
41  : url_fetcher_(url_fetcher),
42  pass_through_mode_(false),
43  mutex_(mutex) {
44  }
45  virtual ~WaitUrlAsyncFetcher();
46 
48  virtual void Fetch(const GoogleString& url,
49  MessageHandler* handler,
50  AsyncFetch* fetch);
51 
53  void CallCallbacks();
54 
58  bool SetPassThroughMode(bool pass_through_mode);
59 
60  private:
61  class DelayedFetch;
62 
63  bool CallCallbacksAndSwitchModesHelper(bool new_mode);
64 
65  UrlAsyncFetcher* url_fetcher_;
66  std::vector<DelayedFetch*> delayed_fetches_;
67  bool pass_through_mode_;
68  scoped_ptr<AbstractMutex> mutex_;
69 
70  DISALLOW_COPY_AND_ASSIGN(WaitUrlAsyncFetcher);
71 };
72 
73 }
74 
75 #endif
virtual void Fetch(const GoogleString &url, MessageHandler *handler, AsyncFetch *fetch)
Initiate fetches that will finish when CallCallbacks is called.
Definition: async_fetch.h:53
void CallCallbacks()
Call all callbacks from previously initiated fetches.
Definition: wait_url_async_fetcher.h:37
Definition: url_async_fetcher.h:33
bool SetPassThroughMode(bool pass_through_mode)