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      1 /*
      2  * Copyright 2010, The Android Open Source Project
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *  * Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  *  * Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef WebCache_h
     27 #define WebCache_h
     28 
     29 #include "CacheResult.h"
     30 #include "ChromiumIncludes.h"
     31 
     32 #include <OwnPtr.h>
     33 #include <platform/text/PlatformString.h>
     34 #include <wtf/ThreadingPrimitives.h>
     35 
     36 namespace android {
     37 
     38 // This class is not generally threadsafe. However, get() and cleanup() are
     39 // threadsafe.
     40 class WebCache : public base::RefCountedThreadSafe<WebCache> {
     41 public:
     42     static WebCache* get(bool isPrivateBrowsing);
     43     static void cleanup(bool isPrivateBrowsing);
     44 
     45     void clear();
     46     scoped_refptr<CacheResult> getCacheResult(WTF::String url);
     47     net::HostResolver* hostResolver() { return m_hostResolver.get(); }
     48     net::HttpCache* cache() { return m_cache.get(); }
     49     net::ProxyConfigServiceAndroid* proxy() { return m_proxyConfigService; }
     50     void closeIdleConnections();
     51     void certTrustChanged();
     52 
     53 private:
     54     WebCache(bool isPrivateBrowsing);
     55 
     56     // For clear()
     57     void clearImpl();
     58     void doomAllEntries(int);
     59     void onClearDone(int);
     60 
     61     // For closeIdleConnections
     62     void closeIdleImpl();
     63     void certTrustChangedImpl();
     64 
     65     // For getEntry()
     66     void getEntryImpl();
     67     void openEntry(int);
     68     void onGetEntryDone(int);
     69 
     70     OwnPtr<net::HostResolver> m_hostResolver;
     71     OwnPtr<net::HttpCache> m_cache;
     72     // This is owned by the ProxyService, which is owned by the HttpNetworkLayer,
     73     // which is owned by the HttpCache, which is owned by this class.
     74     net::ProxyConfigServiceAndroid* m_proxyConfigService;
     75 
     76     // For clear()
     77     net::CompletionCallbackImpl<WebCache> m_doomAllEntriesCallback;
     78     net::CompletionCallbackImpl<WebCache> m_onClearDoneCallback;
     79     bool m_isClearInProgress;
     80     // For getEntry()
     81     net::CompletionCallbackImpl<WebCache> m_openEntryCallback;
     82     net::CompletionCallbackImpl<WebCache> m_onGetEntryDoneCallback;
     83     bool m_isGetEntryInProgress;
     84     String m_entryUrl;
     85     disk_cache::Entry* m_entry;
     86     WTF::Mutex m_getEntryMutex;
     87     WTF::ThreadCondition m_getEntryCondition;
     88 
     89     disk_cache::Backend* m_cacheBackend;
     90 };
     91 
     92 } // namespace android
     93 
     94 #endif
     95