Page Speed Optimization Libraries
1.7.30.3
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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_