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      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
      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  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. 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 APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 #ifndef ResourceResponse_h
     26 #define ResourceResponse_h
     27 
     28 #include "ResourceResponseBase.h"
     29 #include <wtf/RetainPtr.h>
     30 
     31 typedef struct _CFURLResponse* CFURLResponseRef;
     32 
     33 namespace WebCore {
     34 
     35 class ResourceResponse : public ResourceResponseBase {
     36 public:
     37     ResourceResponse()
     38         : m_isUpToDate(true)
     39     {
     40     }
     41 
     42     ResourceResponse(CFURLResponseRef cfResponse)
     43         : m_cfResponse(cfResponse)
     44         , m_isUpToDate(false)
     45     {
     46         m_isNull = !cfResponse;
     47     }
     48 
     49     ResourceResponse(const KURL& url, const String& mimeType, long long expectedLength, const String& textEncodingName, const String& filename)
     50         : ResourceResponseBase(url, mimeType, expectedLength, textEncodingName, filename)
     51         , m_isUpToDate(true)
     52     {
     53     }
     54 
     55     unsigned memoryUsage() const
     56     {
     57         // FIXME: Find some programmatic lighweight way to calculate ResourceResponse and associated classes.
     58         // This is a rough estimate of resource overhead based on stats collected from the stress test.
     59         return 3072;
     60         /*  1280 * 2 +                // average size of ResourceResponse. Doubled to account for the WebCore copy and the CF copy.
     61                                       // Mostly due to the size of the hash maps, the Header Map strings and the URL.
     62             256 * 2                   // Overhead from ResourceRequest, doubled to account for WebCore copy and CF copy.
     63                                       // Mostly due to the URL and Header Map.
     64          */
     65     }
     66 
     67     CFURLResponseRef cfURLResponse() const;
     68 
     69 private:
     70     friend class ResourceResponseBase;
     71 
     72     void platformLazyInit();
     73     static bool platformCompare(const ResourceResponse& a, const ResourceResponse& b);
     74 
     75     RetainPtr<CFURLResponseRef> m_cfResponse;
     76     bool m_isUpToDate;
     77 };
     78 
     79 } // namespace WebCore
     80 
     81 #endif // ResourceResponse_h
     82