1 /*

     2  * Copyright (C) 2007 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 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 

    26 #include "config.h"

    27 #include "WebKitDLL.h"

    28 #include "WebJavaScriptCollector.h"

    29 

    30 #pragma warning(push, 0)

    31 #include <WebCore/JavaScriptStatistics.h>

    32 #pragma warning(pop)

    33 

    34 // WebJavaScriptCollector ---------------------------------------------------------------------------

    35 

    36 WebJavaScriptCollector::WebJavaScriptCollector()

    37 : m_refCount(0)

    38 {

    39     gClassCount++;

    40 }

    41 

    42 WebJavaScriptCollector::~WebJavaScriptCollector()

    43 {

    44     gClassCount--;

    45 }

    46 

    47 WebJavaScriptCollector* WebJavaScriptCollector::createInstance()

    48 {

    49     WebJavaScriptCollector* instance = new WebJavaScriptCollector();

    50     instance->AddRef();

    51     return instance;

    52 }

    53 

    54 // IUnknown -------------------------------------------------------------------

    55 

    56 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)

    57 {

    58     *ppvObject = 0;

    59     if (IsEqualGUID(riid, IID_IUnknown))

    60         *ppvObject = static_cast<IWebJavaScriptCollector*>(this);

    61     else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))

    62         *ppvObject = static_cast<IWebJavaScriptCollector*>(this);

    63     else

    64         return E_NOINTERFACE;

    65 

    66     AddRef();

    67     return S_OK;

    68 }

    69 

    70 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)

    71 {

    72     return ++m_refCount;

    73 }

    74 

    75 ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)

    76 {

    77     ULONG newRef = --m_refCount;

    78     if (!newRef)

    79         delete(this);

    80 

    81     return newRef;

    82 }

    83 

    84 // IWebJavaScriptCollector ------------------------------------------------------------------------------

    85 

    86 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()

    87 {

    88     WebCore::JavaScriptStatistics::garbageCollect();

    89     return S_OK;

    90 }

    91 

    92 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread( 

    93     /* [in] */ BOOL waitUntilDone)

    94 {

    95     WebCore::JavaScriptStatistics::garbageCollectOnAlternateThread(!!waitUntilDone);

    96     return S_OK;

    97 }

    98 

    99 HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount( 

   100     /* [retval][out] */ UINT* count)

   101 {

   102     if (!count) {

   103         ASSERT_NOT_REACHED();

   104         return E_POINTER;

   105     }

   106 

   107     *count = (UINT)WebCore::JavaScriptStatistics::objectCount();

   108     return S_OK;

   109 }