1/*
2 * Copyright (C) 2007, 2008 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#include <JavaScriptCore/Heap.h>
31#include <JavaScriptCore/JSGlobalData.h>
32#include <WebCore/GCController.h>
33#include <WebCore/JSDOMWindow.h>
34#include <runtime/JSLock.h>
35
36using namespace JSC;
37using namespace WebCore;
38
39// WebJavaScriptCollector ---------------------------------------------------------------------------
40
41WebJavaScriptCollector::WebJavaScriptCollector()
42: m_refCount(0)
43{
44    gClassCount++;
45    gClassNameCount.add("WebJavaScriptCollector");
46}
47
48WebJavaScriptCollector::~WebJavaScriptCollector()
49{
50    gClassCount--;
51    gClassNameCount.remove("WebJavaScriptCollector");
52}
53
54WebJavaScriptCollector* WebJavaScriptCollector::createInstance()
55{
56    WebJavaScriptCollector* instance = new WebJavaScriptCollector();
57    instance->AddRef();
58    return instance;
59}
60
61// IUnknown -------------------------------------------------------------------
62
63HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::QueryInterface(REFIID riid, void** ppvObject)
64{
65    *ppvObject = 0;
66    if (IsEqualGUID(riid, IID_IUnknown))
67        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
68    else if (IsEqualGUID(riid, IID_IWebJavaScriptCollector))
69        *ppvObject = static_cast<IWebJavaScriptCollector*>(this);
70    else
71        return E_NOINTERFACE;
72
73    AddRef();
74    return S_OK;
75}
76
77ULONG STDMETHODCALLTYPE WebJavaScriptCollector::AddRef(void)
78{
79    return ++m_refCount;
80}
81
82ULONG STDMETHODCALLTYPE WebJavaScriptCollector::Release(void)
83{
84    ULONG newRef = --m_refCount;
85    if (!newRef)
86        delete(this);
87
88    return newRef;
89}
90
91// IWebJavaScriptCollector ------------------------------------------------------------------------------
92
93HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collect()
94{
95    gcController().garbageCollectNow();
96    return S_OK;
97}
98
99HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::collectOnAlternateThread(
100    /* [in] */ BOOL waitUntilDone)
101{
102    gcController().garbageCollectOnAlternateThreadForDebugging(!!waitUntilDone);
103    return S_OK;
104}
105
106HRESULT STDMETHODCALLTYPE WebJavaScriptCollector::objectCount(
107    /* [retval][out] */ UINT* count)
108{
109    if (!count) {
110        ASSERT_NOT_REACHED();
111        return E_POINTER;
112    }
113
114    JSLock lock(SilenceAssertionsOnly);
115    *count = (UINT)JSDOMWindow::commonJSGlobalData()->heap.objectCount();
116    return S_OK;
117}
118