1 /*

     2  * Copyright (C) 2010 Apple 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 INC. AND ITS CONTRIBUTORS ``AS IS''

    14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

    15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

    16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

    17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

    18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

    19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

    20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

    21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

    22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

    23  * THE POSSIBILITY OF SUCH DAMAGE.

    24  */

    25 

    26 #ifndef JSWeakObjectMapRefInternal_h

    27 #define JSWeakObjectMapRefInternal_h

    28 

    29 #include "WeakGCMap.h"

    30 #include <wtf/RefCounted.h>

    31 

    32 namespace JSC {

    33 

    34 class JSObject;

    35 

    36 }

    37 

    38 typedef void (*JSWeakMapDestroyedCallback)(struct OpaqueJSWeakObjectMap*, void*);

    39 

    40 typedef JSC::WeakGCMap<void*, JSC::JSObject*> WeakMapType;

    41 

    42 struct OpaqueJSWeakObjectMap : public RefCounted<OpaqueJSWeakObjectMap> {

    43 public:

    44     static PassRefPtr<OpaqueJSWeakObjectMap> create(void* data, JSWeakMapDestroyedCallback callback)

    45     {

    46         return adoptRef(new OpaqueJSWeakObjectMap(data, callback));

    47     }

    48 

    49     WeakMapType& map() { return m_map; }

    50     

    51     ~OpaqueJSWeakObjectMap()

    52     {

    53         m_callback(this, m_data);

    54     }

    55 

    56 private:

    57     OpaqueJSWeakObjectMap(void* data, JSWeakMapDestroyedCallback callback)

    58         : m_data(data)

    59         , m_callback(callback)

    60     {

    61     }

    62     WeakMapType m_map;

    63     void* m_data;

    64     JSWeakMapDestroyedCallback m_callback;

    65 };

    66 

    67 

    68 #endif // JSWeakObjectMapInternal_h