Page Speed Optimization Libraries  1.8.31.3
net/instaweb/http/public/wait_url_async_fetcher.h
Go to the documentation of this file.
00001 /*
00002  * Copyright 2010 Google Inc.
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *      http:///www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 
00018 
00019 #ifndef NET_INSTAWEB_HTTP_PUBLIC_WAIT_URL_ASYNC_FETCHER_H_
00020 #define NET_INSTAWEB_HTTP_PUBLIC_WAIT_URL_ASYNC_FETCHER_H_
00021 
00022 #include <vector>
00023 
00024 #include "net/instaweb/util/public/basictypes.h"
00025 #include "net/instaweb/util/public/scoped_ptr.h"
00026 #include "net/instaweb/util/public/string.h"
00027 #include "net/instaweb/http/public/url_async_fetcher.h"
00028 
00029 namespace net_instaweb {
00030 
00031 class AsyncFetch;
00032 class AbstractMutex;
00033 class MessageHandler;
00034 
00037 class WaitUrlAsyncFetcher : public UrlAsyncFetcher {
00038  public:
00039   WaitUrlAsyncFetcher(UrlAsyncFetcher* url_fetcher,
00040                       AbstractMutex* mutex)
00041       : url_fetcher_(url_fetcher),
00042         pass_through_mode_(false),
00043         mutex_(mutex) {
00044   }
00045   virtual ~WaitUrlAsyncFetcher();
00046 
00048   virtual void Fetch(const GoogleString& url,
00049                      MessageHandler* handler,
00050                      AsyncFetch* fetch);
00051 
00053   void CallCallbacks();
00054 
00058   bool SetPassThroughMode(bool pass_through_mode);
00059 
00060  private:
00061   class DelayedFetch;
00062 
00063   bool CallCallbacksAndSwitchModesHelper(bool new_mode);
00064 
00065   UrlAsyncFetcher* url_fetcher_;
00066   std::vector<DelayedFetch*> delayed_fetches_;
00067   bool pass_through_mode_;
00068   scoped_ptr<AbstractMutex> mutex_;
00069 
00070   DISALLOW_COPY_AND_ASSIGN(WaitUrlAsyncFetcher);
00071 };
00072 
00073 }  
00074 
00075 #endif  ///< NET_INSTAWEB_HTTP_PUBLIC_WAIT_URL_ASYNC_FETCHER_H_
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Defines